diff --git a/hotspot/src/cpu/ppc/vm/assembler_ppc.hpp b/hotspot/src/cpu/ppc/vm/assembler_ppc.hpp
index 7d9aecb310f..f1087dbc02c 100644
--- a/hotspot/src/cpu/ppc/vm/assembler_ppc.hpp
+++ b/hotspot/src/cpu/ppc/vm/assembler_ppc.hpp
@@ -1,6 +1,6 @@
 /*
- * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
- * Copyright 2012, 2013 SAP AG. All rights reserved.
+ * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2012, 2015 SAP AG. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -284,19 +284,20 @@ class Assembler : public AbstractAssembler {
     MTCTR_OPCODE  = (MTSPR_OPCODE | 9 << SPR_0_4_SHIFT),
     MFCTR_OPCODE  = (MFSPR_OPCODE | 9 << SPR_0_4_SHIFT),
 
-    MTTFHAR_OPCODE   = (MTSPR_OPCODE | 128 << SPR_0_4_SHIFT),
-    MFTFHAR_OPCODE   = (MFSPR_OPCODE | 128 << SPR_0_4_SHIFT),
-    MTTFIAR_OPCODE   = (MTSPR_OPCODE | 129 << SPR_0_4_SHIFT),
-    MFTFIAR_OPCODE   = (MFSPR_OPCODE | 129 << SPR_0_4_SHIFT),
-    MTTEXASR_OPCODE  = (MTSPR_OPCODE | 130 << SPR_0_4_SHIFT),
-    MFTEXASR_OPCODE  = (MFSPR_OPCODE | 130 << SPR_0_4_SHIFT),
-    MTTEXASRU_OPCODE = (MTSPR_OPCODE | 131 << SPR_0_4_SHIFT),
-    MFTEXASRU_OPCODE = (MFSPR_OPCODE | 131 << SPR_0_4_SHIFT),
+    // Attention: Higher and lower half are inserted in reversed order.
+    MTTFHAR_OPCODE   = (MTSPR_OPCODE | 4 << SPR_5_9_SHIFT | 0 << SPR_0_4_SHIFT),
+    MFTFHAR_OPCODE   = (MFSPR_OPCODE | 4 << SPR_5_9_SHIFT | 0 << SPR_0_4_SHIFT),
+    MTTFIAR_OPCODE   = (MTSPR_OPCODE | 4 << SPR_5_9_SHIFT | 1 << SPR_0_4_SHIFT),
+    MFTFIAR_OPCODE   = (MFSPR_OPCODE | 4 << SPR_5_9_SHIFT | 1 << SPR_0_4_SHIFT),
+    MTTEXASR_OPCODE  = (MTSPR_OPCODE | 4 << SPR_5_9_SHIFT | 2 << SPR_0_4_SHIFT),
+    MFTEXASR_OPCODE  = (MFSPR_OPCODE | 4 << SPR_5_9_SHIFT | 2 << SPR_0_4_SHIFT),
+    MTTEXASRU_OPCODE = (MTSPR_OPCODE | 4 << SPR_5_9_SHIFT | 3 << SPR_0_4_SHIFT),
+    MFTEXASRU_OPCODE = (MFSPR_OPCODE | 4 << SPR_5_9_SHIFT | 3 << SPR_0_4_SHIFT),
 
-    MTVRSAVE_OPCODE  = (MTSPR_OPCODE | 256 << SPR_0_4_SHIFT),
-    MFVRSAVE_OPCODE  = (MFSPR_OPCODE | 256 << SPR_0_4_SHIFT),
+    MTVRSAVE_OPCODE  = (MTSPR_OPCODE | 8 << SPR_5_9_SHIFT | 0 << SPR_0_4_SHIFT),
+    MFVRSAVE_OPCODE  = (MFSPR_OPCODE | 8 << SPR_5_9_SHIFT | 0 << SPR_0_4_SHIFT),
 
-    MFTB_OPCODE   = (MFSPR_OPCODE | 268 << SPR_0_4_SHIFT),
+    MFTB_OPCODE   = (MFSPR_OPCODE | 8 << SPR_5_9_SHIFT | 12 << SPR_0_4_SHIFT),
 
     MTCRF_OPCODE  = (31u << OPCODE_SHIFT | 144u << 1),
     MFCR_OPCODE   = (31u << OPCODE_SHIFT | 19u << 1),
@@ -1494,6 +1495,26 @@ class Assembler : public AbstractAssembler {
   inline void mftexasr(Register d);
   inline void mftexasru(Register d);
 
+  // TEXASR bit description
+  enum transaction_failure_reason {
+    // Upper half (TEXASRU):
+    tm_failure_persistent =  7, // The failure is likely to recur on each execution.
+    tm_disallowed         =  8, // The instruction is not permitted.
+    tm_nesting_of         =  9, // The maximum transaction level was exceeded.
+    tm_footprint_of       = 10, // The tracking limit for transactional storage accesses was exceeded.
+    tm_self_induced_cf    = 11, // A self-induced conflict occurred in Suspended state.
+    tm_non_trans_cf       = 12, // A conflict occurred with a non-transactional access by another processor.
+    tm_trans_cf           = 13, // A conflict occurred with another transaction.
+    tm_translation_cf     = 14, // A conflict occurred with a TLB invalidation.
+    tm_inst_fetch_cf      = 16, // An instruction fetch was performed from a block that was previously written transactionally.
+    tm_tabort             = 31, // Termination was caused by the execution of an abort instruction.
+    // Lower half:
+    tm_suspended          = 32, // Failure was recorded in Suspended state.
+    tm_failure_summary    = 36, // Failure has been detected and recorded.
+    tm_tfiar_exact        = 37, // Value in the TFIAR is exact.
+    tm_rot                = 38, // Rollback-only transaction.
+  };
+
   // PPC 1, section 2.4.1 Branch Instructions
   inline void b(  address a, relocInfo::relocType rt = relocInfo::none);
   inline void b(  Label& L);
@@ -1581,6 +1602,7 @@ class Assembler : public AbstractAssembler {
   inline void bnectrl(ConditionRegister crx, relocInfo::relocType rt = relocInfo::none);
 
   // condition register logic instructions
+  // NOTE: There's a preferred form: d and s2 should point into the same condition register.
   inline void crand( int d, int s1, int s2);
   inline void crnand(int d, int s1, int s2);
   inline void cror(  int d, int s1, int s2);
@@ -1590,6 +1612,19 @@ class Assembler : public AbstractAssembler {
   inline void crandc(int d, int s1, int s2);
   inline void crorc( int d, int s1, int s2);
 
+  // More convenient version.
+  int condition_register_bit(ConditionRegister cr, Condition c) {
+    return 4 * (int)(intptr_t)cr + c;
+  }
+  void crand( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
+  void crnand(ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
+  void cror(  ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
+  void crxor( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
+  void crnor( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
+  void creqv( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
+  void crandc(ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
+  void crorc( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc);
+
   // icache and dcache related instructions
   inline void icbi(  Register s1, Register s2);
   //inline void dcba(Register s1, Register s2); // Instruction for embedded processor only.
@@ -1673,6 +1708,10 @@ class Assembler : public AbstractAssembler {
   inline void smt_prio_low();
   inline void smt_prio_medium_low();
   inline void smt_prio_medium();
+  // >= Power7
+  inline void smt_yield();
+  inline void smt_mdoio();
+  inline void smt_mdoom();
 
   // trap instructions
   inline void twi_0(Register a); // for load with acquire semantics use load+twi_0+isync (trap can't occur)
@@ -1958,6 +1997,7 @@ class Assembler : public AbstractAssembler {
   inline void tbeginrot_(); // R=1 Rollback-Only Transaction
   inline void tend_();    // A=0
   inline void tendall_(); // A=1
+  inline void tabort_();
   inline void tabort_(Register a);
   inline void tabortwc_(int t, Register a, Register b);
   inline void tabortwci_(int t, Register a, int si);
@@ -1967,6 +2007,10 @@ class Assembler : public AbstractAssembler {
   inline void tresume_();  // tsr with L=1
   inline void tcheck(int f);
 
+  static bool is_tbegin(int x) {
+    return TBEGIN_OPCODE == (x & (0x3f << OPCODE_SHIFT | 0x3ff << 1));
+  }
+
   // The following encoders use r0 as second operand. These instructions
   // read r0 as '0'.
   inline void lwzx( Register d, Register s2);
diff --git a/hotspot/src/cpu/ppc/vm/assembler_ppc.inline.hpp b/hotspot/src/cpu/ppc/vm/assembler_ppc.inline.hpp
index b4a7370994d..5493f124371 100644
--- a/hotspot/src/cpu/ppc/vm/assembler_ppc.inline.hpp
+++ b/hotspot/src/cpu/ppc/vm/assembler_ppc.inline.hpp
@@ -1,6 +1,6 @@
 /*
- * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
- * Copyright 2012, 2014 SAP AG. All rights reserved.
+ * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2012, 2015 SAP AG. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -453,6 +453,48 @@ inline void Assembler::creqv( int d, int s1, int s2) { emit_int32(CREQV_OPCODE
 inline void Assembler::crandc(int d, int s1, int s2) { emit_int32(CRANDC_OPCODE | bt(d) | ba(s1) | bb(s2)); }
 inline void Assembler::crorc( int d, int s1, int s2) { emit_int32(CRORC_OPCODE  | bt(d) | ba(s1) | bb(s2)); }
 
+// More convenient version.
+inline void Assembler::crand( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc) {
+  int dst_bit = condition_register_bit(crdst, cdst),
+      src_bit = condition_register_bit(crsrc, csrc);
+  crand(dst_bit, src_bit, dst_bit);
+}
+inline void Assembler::crnand(ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc) {
+  int dst_bit = condition_register_bit(crdst, cdst),
+      src_bit = condition_register_bit(crsrc, csrc);
+  crnand(dst_bit, src_bit, dst_bit);
+}
+inline void Assembler::cror(  ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc) {
+  int dst_bit = condition_register_bit(crdst, cdst),
+      src_bit = condition_register_bit(crsrc, csrc);
+  cror(dst_bit, src_bit, dst_bit);
+}
+inline void Assembler::crxor( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc) {
+  int dst_bit = condition_register_bit(crdst, cdst),
+      src_bit = condition_register_bit(crsrc, csrc);
+  crxor(dst_bit, src_bit, dst_bit);
+}
+inline void Assembler::crnor( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc) {
+  int dst_bit = condition_register_bit(crdst, cdst),
+      src_bit = condition_register_bit(crsrc, csrc);
+  crnor(dst_bit, src_bit, dst_bit);
+}
+inline void Assembler::creqv( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc) {
+  int dst_bit = condition_register_bit(crdst, cdst),
+      src_bit = condition_register_bit(crsrc, csrc);
+  creqv(dst_bit, src_bit, dst_bit);
+}
+inline void Assembler::crandc(ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc) {
+  int dst_bit = condition_register_bit(crdst, cdst),
+      src_bit = condition_register_bit(crsrc, csrc);
+  crandc(dst_bit, src_bit, dst_bit);
+}
+inline void Assembler::crorc( ConditionRegister crdst, Condition cdst, ConditionRegister crsrc, Condition csrc) {
+  int dst_bit = condition_register_bit(crdst, cdst),
+      src_bit = condition_register_bit(crsrc, csrc);
+  crorc(dst_bit, src_bit, dst_bit);
+}
+
 // Conditional move (>= Power7)
 inline void Assembler::isel(Register d, ConditionRegister cr, Condition cc, bool inv, Register a, Register b) {
   if (b == noreg) {
@@ -516,6 +558,10 @@ inline void Assembler::smt_prio_medium_low()  { Assembler::or_unchecked(R6,  R6,
 inline void Assembler::smt_prio_medium()      { Assembler::or_unchecked(R2,  R2,  R2); }
 inline void Assembler::smt_prio_medium_high() { Assembler::or_unchecked(R5,  R5,  R5); }
 inline void Assembler::smt_prio_high()        { Assembler::or_unchecked(R3,  R3,  R3); }
+// >= Power7
+inline void Assembler::smt_yield()            { Assembler::or_unchecked(R27, R27, R27); }
+inline void Assembler::smt_mdoio()            { Assembler::or_unchecked(R29, R29, R29); }
+inline void Assembler::smt_mdoom()            { Assembler::or_unchecked(R30, R30, R30); }
 
 inline void Assembler::twi_0(Register a)      { twi_unchecked(0, a, 0);}
 
@@ -778,7 +824,8 @@ inline void Assembler::tbegin_()                                { emit_int32( TB
 inline void Assembler::tbeginrot_()                             { emit_int32( TBEGIN_OPCODE | /*R=1*/ 1u << (31-10) | rc(1)); }
 inline void Assembler::tend_()                                  { emit_int32( TEND_OPCODE | rc(1)); }
 inline void Assembler::tendall_()                               { emit_int32( TEND_OPCODE | /*A=1*/ 1u << (31-6) | rc(1)); }
-inline void Assembler::tabort_(Register a)                      { emit_int32( TABORT_OPCODE | ra(a) | rc(1)); }
+inline void Assembler::tabort_()                                { emit_int32( TABORT_OPCODE | rc(1)); }
+inline void Assembler::tabort_(Register a)                      { assert(a != R0, "r0 not allowed"); emit_int32( TABORT_OPCODE | ra(a) | rc(1)); }
 inline void Assembler::tabortwc_(int t, Register a, Register b) { emit_int32( TABORTWC_OPCODE | to(t) | ra(a) | rb(b) | rc(1)); }
 inline void Assembler::tabortwci_(int t, Register a, int si)    { emit_int32( TABORTWCI_OPCODE | to(t) | ra(a) | sh1620(si) | rc(1)); }
 inline void Assembler::tabortdc_(int t, Register a, Register b) { emit_int32( TABORTDC_OPCODE | to(t) | ra(a) | rb(b) | rc(1)); }
diff --git a/hotspot/src/cpu/ppc/vm/interp_masm_ppc_64.cpp b/hotspot/src/cpu/ppc/vm/interp_masm_ppc_64.cpp
index dec0d9732a8..9cb22c11433 100644
--- a/hotspot/src/cpu/ppc/vm/interp_masm_ppc_64.cpp
+++ b/hotspot/src/cpu/ppc/vm/interp_masm_ppc_64.cpp
@@ -1,6 +1,6 @@
 /*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
- * Copyright 2012, 2014 SAP AG. All rights reserved.
+ * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2012, 2015 SAP AG. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1712,7 +1712,7 @@ void InterpreterMacroAssembler::profile_obj_type(Register obj, Register mdo_addr
   andi_(R0, klass, TypeEntries::type_unknown);
   // Already unknown. Nothing to do anymore.
   //bne(CCR0, do_nothing);
-  crorc(/*CCR0 eq*/2, /*CCR1 eq*/4+2, /*CCR0 eq*/2); // cr0 eq = cr1 eq or cr0 ne
+  crorc(CCR0, Assembler::equal, CCR1, Assembler::equal); // cr0 eq = cr1 eq or cr0 ne
   beq(CCR0, do_nothing);
 
   clrrdi_(R0, tmp, exact_log2(-TypeEntries::type_mask));
@@ -1826,9 +1826,9 @@ void InterpreterMacroAssembler::profile_return_type(Register ret, Register tmp1,
       lbz(tmp2, Method::intrinsic_id_offset_in_bytes(), R19_method);
       cmpwi(CCR0, tmp1, Bytecodes::_invokedynamic);
       cmpwi(CCR1, tmp1, Bytecodes::_invokehandle);
-      cror(/*CR0 eq*/2, /*CR1 eq*/4+2, /*CR0 eq*/2);
+      cror(CCR0, Assembler::equal, CCR1, Assembler::equal);
       cmpwi(CCR1, tmp2, vmIntrinsics::_compiledLambdaForm);
-      cror(/*CR0 eq*/2, /*CR1 eq*/4+2, /*CR0 eq*/2);
+      cror(CCR0, Assembler::equal, CCR1, Assembler::equal);
       bne(CCR0, profile_continue);
     }
 
diff --git a/hotspot/src/cpu/ppc/vm/stubGenerator_ppc.cpp b/hotspot/src/cpu/ppc/vm/stubGenerator_ppc.cpp
index 0f8c752cacc..43258ce2a9a 100644
--- a/hotspot/src/cpu/ppc/vm/stubGenerator_ppc.cpp
+++ b/hotspot/src/cpu/ppc/vm/stubGenerator_ppc.cpp
@@ -1,6 +1,6 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
- * Copyright 2012, 2014 SAP AG. All rights reserved.
+ * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2012, 2015 SAP AG. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1079,7 +1079,7 @@ class StubGenerator: public StubCodeGenerator {
     __ sldi(tmp2, R5_ARG3, log2_elem_size); // size in bytes
     __ cmpld(CCR0, R3_ARG1, R4_ARG2); // Use unsigned comparison!
     __ cmpld(CCR1, tmp1, tmp2);
-    __ crand(/*CCR0 lt*/0, /*CCR1 lt*/4+0, /*CCR0 lt*/0);
+    __ crand(CCR0, Assembler::less, CCR1, Assembler::less);
     __ blt(CCR0, l_overlap); // Src before dst and distance smaller than size.
 
     // need to copy forwards
diff --git a/hotspot/src/cpu/ppc/vm/templateInterpreter_ppc.cpp b/hotspot/src/cpu/ppc/vm/templateInterpreter_ppc.cpp
index 2a58b36d420..432a96d8268 100644
--- a/hotspot/src/cpu/ppc/vm/templateInterpreter_ppc.cpp
+++ b/hotspot/src/cpu/ppc/vm/templateInterpreter_ppc.cpp
@@ -264,11 +264,11 @@ void TemplateInterpreterGenerator::generate_counter_incr(Label* overflow, Label*
       __ cmpdi(CCR0, Rmdo, 0);
       __ beq(CCR0, no_mdo);
 
-      // Increment backedge counter in the MDO.
-      const int mdo_bc_offs = in_bytes(MethodData::backedge_counter_offset()) + in_bytes(InvocationCounter::counter_offset());
-      __ lwz(Rscratch2, mdo_bc_offs, Rmdo);
+      // Increment invocation counter in the MDO.
+      const int mdo_ic_offs = in_bytes(MethodData::invocation_counter_offset()) + in_bytes(InvocationCounter::counter_offset());
+      __ lwz(Rscratch2, mdo_ic_offs, Rmdo);
       __ addi(Rscratch2, Rscratch2, increment);
-      __ stw(Rscratch2, mdo_bc_offs, Rmdo);
+      __ stw(Rscratch2, mdo_ic_offs, Rmdo);
       __ load_const_optimized(Rscratch1, mask, R0);
       __ and_(Rscratch1, Rscratch2, Rscratch1);
       __ bne(CCR0, done);
@@ -276,12 +276,12 @@ void TemplateInterpreterGenerator::generate_counter_incr(Label* overflow, Label*
     }
 
     // Increment counter in MethodCounters*.
-    const int mo_bc_offs = in_bytes(MethodCounters::backedge_counter_offset()) + in_bytes(InvocationCounter::counter_offset());
+    const int mo_ic_offs = in_bytes(MethodCounters::invocation_counter_offset()) + in_bytes(InvocationCounter::counter_offset());
     __ bind(no_mdo);
     __ get_method_counters(R19_method, R3_counters, done);
-    __ lwz(Rscratch2, mo_bc_offs, R3_counters);
+    __ lwz(Rscratch2, mo_ic_offs, R3_counters);
     __ addi(Rscratch2, Rscratch2, increment);
-    __ stw(Rscratch2, mo_bc_offs, R3_counters);
+    __ stw(Rscratch2, mo_ic_offs, R3_counters);
     __ load_const_optimized(Rscratch1, mask, R0);
     __ and_(Rscratch1, Rscratch2, Rscratch1);
     __ beq(CCR0, *overflow);
diff --git a/hotspot/src/cpu/ppc/vm/templateTable_ppc_64.cpp b/hotspot/src/cpu/ppc/vm/templateTable_ppc_64.cpp
index 40cd339c2c0..69c1e0d1be1 100644
--- a/hotspot/src/cpu/ppc/vm/templateTable_ppc_64.cpp
+++ b/hotspot/src/cpu/ppc/vm/templateTable_ppc_64.cpp
@@ -1,6 +1,6 @@
 /*
- * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
- * Copyright 2013, 2014 SAP AG. All rights reserved.
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2013, 2015 SAP AG. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -335,11 +335,11 @@ void TemplateTable::ldc(bool wide) {
 
   __ cmpwi(CCR0, Rscratch2, JVM_CONSTANT_UnresolvedClass); // Unresolved class?
   __ cmpwi(CCR1, Rscratch2, JVM_CONSTANT_UnresolvedClassInError); // Unresolved class in error state?
-  __ cror(/*CR0 eq*/2, /*CR1 eq*/4+2, /*CR0 eq*/2);
+  __ cror(CCR0, Assembler::equal, CCR1, Assembler::equal);
 
   // Resolved class - need to call vm to get java mirror of the class.
   __ cmpwi(CCR1, Rscratch2, JVM_CONSTANT_Class);
-  __ crnor(/*CR0 eq*/2, /*CR1 eq*/4+2, /*CR0 eq*/2); // Neither resolved class nor unresolved case from above?
+  __ crnor(CCR0, Assembler::equal, CCR1, Assembler::equal); // Neither resolved class nor unresolved case from above?
   __ beq(CCR0, notClass);
 
   __ li(R4, wide ? 1 : 0);
@@ -2611,7 +2611,7 @@ void TemplateTable::jvmti_post_field_mod(Register Rcache, Register Rscratch, boo
           __ cmpwi(CCR0, Rflags, ltos);
           __ cmpwi(CCR1, Rflags, dtos);
           __ addi(base, R15_esp, Interpreter::expr_offset_in_bytes(1));
-          __ crnor(/*CR0 eq*/2, /*CR1 eq*/4+2, /*CR0 eq*/2);
+          __ crnor(CCR0, Assembler::equal, CCR1, Assembler::equal);
           __ beq(CCR0, is_one_slot);
           __ addi(base, R15_esp, Interpreter::expr_offset_in_bytes(2));
           __ bind(is_one_slot);
@@ -3563,7 +3563,7 @@ void TemplateTable::_new() {
     // Make sure klass does not have has_finalizer, or is abstract, or interface or java/lang/Class.
     __ andi_(R0, Rinstance_size, Klass::_lh_instance_slow_path_bit); // slow path bit equals 0?
 
-    __ crnand(/*CR0 eq*/2, /*CR1 eq*/4+2, /*CR0 eq*/2); // slow path bit set or not fully initialized?
+    __ crnand(CCR0, Assembler::equal, CCR1, Assembler::equal); // slow path bit set or not fully initialized?
     __ beq(CCR0, Lslow_case);
 
     // --------------------------------------------------------------------------
diff --git a/hotspot/src/cpu/x86/vm/macroAssembler_x86.cpp b/hotspot/src/cpu/x86/vm/macroAssembler_x86.cpp
index a6a5b43c07b..24587840f98 100644
--- a/hotspot/src/cpu/x86/vm/macroAssembler_x86.cpp
+++ b/hotspot/src/cpu/x86/vm/macroAssembler_x86.cpp
@@ -3184,7 +3184,24 @@ void MacroAssembler::pow_or_exp(bool is_exp, int num_fpu_regs_in_use) {
     jmp(done);
   } else {
     // Stack: X Y
-    Label x_negative, y_odd;
+    Label x_negative, y_not_2;
+
+    static double two = 2.0;
+    ExternalAddress two_addr((address)&two);
+
+    // constant maybe too far on 64 bit
+    lea(tmp2, two_addr);
+    fld_d(Address(tmp2, 0));    // Stack: 2 X Y
+    fcmp(tmp, 2, true, false);  // Stack: X Y
+    jcc(Assembler::parity, y_not_2);
+    jcc(Assembler::notEqual, y_not_2);
+
+    fxch(); fpop();             // Stack: X
+    fmul(0);                    // Stack: X*X
+
+    jmp(done);
+
+    bind(y_not_2);
 
     fldz();                     // Stack: 0 X Y
     fcmp(tmp, 1, true, false);  // Stack: X Y
diff --git a/hotspot/src/os_cpu/bsd_zero/vm/atomic_bsd_zero.inline.hpp b/hotspot/src/os_cpu/bsd_zero/vm/atomic_bsd_zero.inline.hpp
index 60969caa962..4e7e702ad66 100644
--- a/hotspot/src/os_cpu/bsd_zero/vm/atomic_bsd_zero.inline.hpp
+++ b/hotspot/src/os_cpu/bsd_zero/vm/atomic_bsd_zero.inline.hpp
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
- * Copyright 2007, 2008, 2011 Red Hat, Inc.
+ * Copyright 2007, 2008, 2011, 2015, Red Hat, Inc.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -237,7 +237,13 @@ inline jint Atomic::xchg(jint exchange_value, volatile jint* dest) {
   // operation.  Note that some platforms only support this with the
   // limitation that the only valid value to store is the immediate
   // constant 1.  There is a test for this in JNI_CreateJavaVM().
-  return __sync_lock_test_and_set (dest, exchange_value);
+  jint result = __sync_lock_test_and_set (dest, exchange_value);
+  // All atomic operations are expected to be full memory barriers
+  // (see atomic.hpp). However, __sync_lock_test_and_set is not
+  // a full memory barrier, but an acquire barrier. Hence, this added
+  // barrier.
+  __sync_synchronize();
+  return result;
 #endif // M68K
 #endif // ARM
 }
@@ -250,7 +256,9 @@ inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value,
 #ifdef M68K
   return m68k_lock_test_and_set(dest, exchange_value);
 #else
-  return __sync_lock_test_and_set (dest, exchange_value);
+  intptr_t result = __sync_lock_test_and_set (dest, exchange_value);
+  __sync_synchronize();
+  return result;
 #endif // M68K
 #endif // ARM
 }
diff --git a/hotspot/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp b/hotspot/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp
index d9df41034d4..266c950422b 100644
--- a/hotspot/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp
+++ b/hotspot/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
- * Copyright 2007, 2008, 2011 Red Hat, Inc.
+ * Copyright 2007, 2008, 2011, 2015, Red Hat, Inc.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -231,7 +231,13 @@ inline jint Atomic::xchg(jint exchange_value, volatile jint* dest) {
   // operation.  Note that some platforms only support this with the
   // limitation that the only valid value to store is the immediate
   // constant 1.  There is a test for this in JNI_CreateJavaVM().
-  return __sync_lock_test_and_set (dest, exchange_value);
+  jint result = __sync_lock_test_and_set (dest, exchange_value);
+  // All atomic operations are expected to be full memory barriers
+  // (see atomic.hpp). However, __sync_lock_test_and_set is not
+  // a full memory barrier, but an acquire barrier. Hence, this added
+  // barrier.
+  __sync_synchronize();
+  return result;
 #endif // M68K
 #endif // ARM
 }
@@ -244,7 +250,9 @@ inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value,
 #ifdef M68K
   return m68k_lock_test_and_set(dest, exchange_value);
 #else
-  return __sync_lock_test_and_set (dest, exchange_value);
+  intptr_t result = __sync_lock_test_and_set (dest, exchange_value);
+  __sync_synchronize();
+  return result;
 #endif // M68K
 #endif // ARM
 }
diff --git a/hotspot/src/share/vm/compiler/compileBroker.cpp b/hotspot/src/share/vm/compiler/compileBroker.cpp
index 2b22da1f705..4f0def89a20 100644
--- a/hotspot/src/share/vm/compiler/compileBroker.cpp
+++ b/hotspot/src/share/vm/compiler/compileBroker.cpp
@@ -252,7 +252,7 @@ CompileTask* CompileTask::allocate() {
   } else {
     task = new CompileTask();
     DEBUG_ONLY(_num_allocated_tasks++;)
-    assert (_num_allocated_tasks < 10000, "Leaking compilation tasks?");
+    assert (WhiteBoxAPI || _num_allocated_tasks < 10000, "Leaking compilation tasks?");
     task->set_next(NULL);
     task->set_is_free(true);
   }
diff --git a/hotspot/src/share/vm/compiler/compilerOracle.cpp b/hotspot/src/share/vm/compiler/compilerOracle.cpp
index b733305666b..a6351be1783 100644
--- a/hotspot/src/share/vm/compiler/compilerOracle.cpp
+++ b/hotspot/src/share/vm/compiler/compilerOracle.cpp
@@ -105,7 +105,6 @@ class MethodMatcher : public CHeapObj<mtCompiler> {
     tty->print(".");
     print_symbol(method_name(), _method_mode);
     if (signature() != NULL) {
-      tty->print(" ");
       signature()->print_symbol_on(tty);
     }
   }
@@ -467,43 +466,85 @@ static OracleCommand parse_command_name(const char * line, int* bytes_read) {
   return UnknownCommand;
 }
 
-
 static void usage() {
-  tty->print_cr("  CompileCommand and the CompilerOracle allows simple control over");
-  tty->print_cr("  what's allowed to be compiled.  The standard supported directives");
-  tty->print_cr("  are exclude and compileonly.  The exclude directive stops a method");
-  tty->print_cr("  from being compiled and compileonly excludes all methods except for");
-  tty->print_cr("  the ones mentioned by compileonly directives.  The basic form of");
-  tty->print_cr("  all commands is a command name followed by the name of the method");
-  tty->print_cr("  in one of two forms: the standard class file format as in");
-  tty->print_cr("  class/name.methodName or the PrintCompilation format");
-  tty->print_cr("  class.name::methodName.  The method name can optionally be followed");
-  tty->print_cr("  by a space then the signature of the method in the class file");
-  tty->print_cr("  format.  Otherwise the directive applies to all methods with the");
-  tty->print_cr("  same name and class regardless of signature.  Leading and trailing");
-  tty->print_cr("  *'s in the class and/or method name allows a small amount of");
-  tty->print_cr("  wildcarding.  ");
   tty->cr();
-  tty->print_cr("  Examples:");
+  tty->print_cr("The CompileCommand option enables the user of the JVM to control specific");
+  tty->print_cr("behavior of the dynamic compilers. Many commands require a pattern that defines");
+  tty->print_cr("the set of methods the command shall be applied to. The CompileCommand");
+  tty->print_cr("option provides the following commands:");
   tty->cr();
-  tty->print_cr("  exclude java/lang/StringBuffer.append");
-  tty->print_cr("  compileonly java/lang/StringBuffer.toString ()Ljava/lang/String;");
-  tty->print_cr("  exclude java/lang/String*.*");
-  tty->print_cr("  exclude *.toString");
-}
+  tty->print_cr("  break,<pattern>       - debug breakpoint in compiler and in generated code");
+  tty->print_cr("  print,<pattern>       - print assembly");
+  tty->print_cr("  exclude,<pattern>     - don't compile or inline");
+  tty->print_cr("  inline,<pattern>      - always inline");
+  tty->print_cr("  dontinline,<pattern>  - don't inline");
+  tty->print_cr("  compileonly,<pattern> - compile only");
+  tty->print_cr("  log,<pattern>         - log compilation");
+  tty->print_cr("  option,<pattern>,<option type>,<option name>,<value>");
+  tty->print_cr("                        - set value of custom option");
+  tty->print_cr("  option,<pattern>,<bool option name>");
+  tty->print_cr("                        - shorthand for setting boolean flag");
+  tty->print_cr("  quiet                 - silence the compile command output");
+  tty->print_cr("  help                  - print this text");
+  tty->cr();
+  tty->print_cr("The preferred format for the method matching pattern is:");
+  tty->print_cr("  package/Class.method()");
+  tty->cr();
+  tty->print_cr("For backward compatibility this form is also allowed:");
+  tty->print_cr("  package.Class::method()");
+  tty->cr();
+  tty->print_cr("The signature can be separated by an optional whitespace or comma:");
+  tty->print_cr("  package/Class.method ()");
+  tty->cr();
+  tty->print_cr("The class and method identifier can be used together with leading or");
+  tty->print_cr("trailing *'s for a small amount of wildcarding:");
+  tty->print_cr("  *ackage/Clas*.*etho*()");
+  tty->cr();
+  tty->print_cr("It is possible to use more than one CompileCommand on the command line:");
+  tty->print_cr("  -XX:CompileCommand=exclude,java/*.* -XX:CompileCommand=log,java*.*");
+  tty->cr();
+  tty->print_cr("The CompileCommands can be loaded from a file with the flag");
+  tty->print_cr("-XX:CompileCommandFile=<file> or be added to the file '.hotspot_compiler'");
+  tty->print_cr("Use the same format in the file as the argument to the CompileCommand flag.");
+  tty->print_cr("Add one command on each line.");
+  tty->print_cr("  exclude java/*.*");
+  tty->print_cr("  option java/*.* ReplayInline");
+  tty->cr();
+  tty->print_cr("The following commands have conflicting behavior: 'exclude', 'inline', 'dontinline',");
+  tty->print_cr("and 'compileonly'. There is no priority of commands. Applying (a subset of) these");
+  tty->print_cr("commands to the same method results in undefined behavior.");
+  tty->cr();
+};
 
+// The JVM specification defines the allowed characters.
+// Tokens that are disallowed by the JVM specification can have
+// a meaning to the parser so we need to include them here.
+// The parser does not enforce all rules of the JVMS - a successful parse
+// does not mean that it is an allowed name. Illegal names will
+// be ignored since they never can match a class or method.
+//
+// '\0' and 0xf0-0xff are disallowed in constant string values
+// 0x20 ' ', 0x09 '\t' and, 0x2c ',' are used in the matching
+// 0x5b '[' and 0x5d ']' can not be used because of the matcher
+// 0x28 '(' and 0x29 ')' are used for the signature
+// 0x2e '.' is always replaced before the matching
+// 0x2f '/' is only used in the class name as package separator
 
-// The characters allowed in a class or method name.  All characters > 0x7f
-// are allowed in order to handle obfuscated class files (e.g. Volano)
-#define RANGEBASE "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789$_<>" \
-        "\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f" \
-        "\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f" \
-        "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf" \
-        "\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf" \
-        "\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf" \
-        "\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf" \
-        "\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef" \
-        "\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"
+#define RANGEBASE "\x1\x2\x3\x4\x5\x6\x7\x8\xa\xb\xc\xd\xe\xf" \
+    "\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" \
+    "\x21\x22\x23\x24\x25\x26\x27\x2a\x2b\x2c\x2d" \
+    "\x30\x31\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b\x3c\x3d\x3e\x3f" \
+    "\x40\x41\x42\x43\x44\x45\x46\x47\x48\x49\x4a\x4b\x4c\x4d\x4e\x4f" \
+    "\x50\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5a\x5c\x5e\x5f" \
+    "\x60\x61\x62\x63\x64\x65\x66\x67\x68\x69\x6a\x6b\x6c\x6d\x6e\x6f" \
+    "\x70\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f" \
+    "\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f" \
+    "\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f" \
+    "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf" \
+    "\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf" \
+    "\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf" \
+    "\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf" \
+    "\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef"
 
 #define RANGE0 "[*" RANGEBASE "]"
 #define RANGESLASH "[*" RANGEBASE "/]"
@@ -681,8 +722,9 @@ void CompilerOracle::parse_from_line(char* line) {
 
   if (command == UnknownCommand) {
     ttyLocker ttyl;
-    tty->print_cr("CompilerOracle: unrecognized line");
+    tty->print_cr("CompileCommand: unrecognized command");
     tty->print_cr("  \"%s\"", original_line);
+    CompilerOracle::print_tip();
     return;
   }
 
@@ -712,9 +754,17 @@ void CompilerOracle::parse_from_line(char* line) {
     Symbol* signature = NULL;
 
     line += bytes_read;
+
+    // Skip any leading spaces before signature
+    int whitespace_read = 0;
+    sscanf(line, "%*[ \t]%n", &whitespace_read);
+    if (whitespace_read > 0) {
+      line += whitespace_read;
+    }
+
     // there might be a signature following the method.
     // signatures always begin with ( so match that by hand
-    if (1 == sscanf(line, "%*[ \t](%254[[);/" RANGEBASE "]%n", sig + 1, &bytes_read)) {
+    if (1 == sscanf(line, "(%254[[);/" RANGEBASE "]%n", sig + 1, &bytes_read)) {
       sig[0] = '(';
       line += bytes_read;
       signature = SymbolTable::new_symbol(sig, CHECK);
@@ -740,7 +790,7 @@ void CompilerOracle::parse_from_line(char* line) {
         if (match != NULL && !_quiet) {
           // Print out the last match added
           ttyLocker ttyl;
-          tty->print("CompilerOracle: %s ", command_names[command]);
+          tty->print("CompileCommand: %s ", command_names[command]);
           match->print();
         }
         line += bytes_read;
@@ -775,26 +825,36 @@ void CompilerOracle::parse_from_line(char* line) {
   ttyLocker ttyl;
   if (error_msg != NULL) {
     // an error has happened
-    tty->print_cr("CompilerOracle: unrecognized line");
+    tty->print_cr("CompileCommand: An error occured during parsing");
     tty->print_cr("  \"%s\"", original_line);
     if (error_msg != NULL) {
       tty->print_cr("%s", error_msg);
     }
+    CompilerOracle::print_tip();
+
   } else {
     // check for remaining characters
     bytes_read = 0;
     sscanf(line, "%*[ \t]%n", &bytes_read);
     if (line[bytes_read] != '\0') {
-      tty->print_cr("CompilerOracle: unrecognized line");
+      tty->print_cr("CompileCommand: Bad pattern");
       tty->print_cr("  \"%s\"", original_line);
       tty->print_cr("  Unrecognized text %s after command ", line);
+      CompilerOracle::print_tip();
     } else if (match != NULL && !_quiet) {
-      tty->print("CompilerOracle: %s ", command_names[command]);
+      tty->print("CompileCommand: %s ", command_names[command]);
       match->print();
     }
   }
 }
 
+void CompilerOracle::print_tip() {
+  tty->cr();
+  tty->print_cr("Usage: '-XX:CompileCommand=command,\"package/Class.method()\"'");
+  tty->print_cr("Use:   '-XX:CompileCommand=help' for more information.");
+  tty->cr();
+}
+
 static const char* default_cc_file = ".hotspot_compiler";
 
 static const char* cc_file() {
diff --git a/hotspot/src/share/vm/compiler/compilerOracle.hpp b/hotspot/src/share/vm/compiler/compilerOracle.hpp
index 8a5981ff1f8..b4b2974ce21 100644
--- a/hotspot/src/share/vm/compiler/compilerOracle.hpp
+++ b/hotspot/src/share/vm/compiler/compilerOracle.hpp
@@ -34,6 +34,7 @@
 class CompilerOracle : AllStatic {
  private:
   static bool _quiet;
+  static void print_tip();
 
  public:
 
diff --git a/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp b/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp
index 6bb8b5de63c..0119858fe5b 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp
@@ -1910,7 +1910,6 @@ public:
   }
 
   void work(uint worker_id) {
-    double start = os::elapsedTime();
     FreeRegionList local_cleanup_list("Local Cleanup List");
     HRRSCleanupTask hrrs_cleanup_task;
     G1NoteEndOfConcMarkClosure g1_note_end(_g1h, &local_cleanup_list,
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
index 335ba2265d5..0d81bbfec83 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
@@ -1229,7 +1229,6 @@ bool G1CollectedHeap::do_collection(bool explicit_gc,
       TraceCollectorStats tcs(g1mm()->full_collection_counters());
       TraceMemoryManagerStats tms(true /* fullGC */, gc_cause());
 
-      double start = os::elapsedTime();
       g1_policy()->record_full_collection_start();
 
       // Note: When we have a more flexible GC logging framework that
@@ -1436,7 +1435,6 @@ bool G1CollectedHeap::do_collection(bool explicit_gc,
 
       _allocator->init_mutator_alloc_region();
 
-      double end = os::elapsedTime();
       g1_policy()->record_full_collection_end();
 
       if (G1Log::fine()) {
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
index ab79bcd05ad..3286453095c 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
@@ -56,7 +56,6 @@ class HRRSCleanupTask;
 class GenerationSpec;
 class OopsInHeapRegionClosure;
 class G1KlassScanClosure;
-class G1ScanHeapEvacClosure;
 class ObjectClosure;
 class SpaceClosure;
 class CompactibleSpaceClosure;
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp b/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp
index 5cc47a24964..175c5eb9448 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -153,14 +153,6 @@ G1CollectorPolicy::G1CollectorPolicy() :
   _inc_cset_predicted_elapsed_time_ms(0.0),
   _inc_cset_predicted_elapsed_time_ms_diffs(0.0),
 
-#ifdef _MSC_VER // the use of 'this' below gets a warning, make it go away
-#pragma warning( disable:4355 ) // 'this' : used in base member initializer list
-#endif // _MSC_VER
-
-  _short_lived_surv_rate_group(new SurvRateGroup(this, "Short Lived",
-                                                 G1YoungSurvRateNumRegionsSummary)),
-  _survivor_surv_rate_group(new SurvRateGroup(this, "Survivor",
-                                              G1YoungSurvRateNumRegionsSummary)),
   // add here any more surv rate groups
   _recorded_survivor_regions(0),
   _recorded_survivor_head(NULL),
@@ -169,6 +161,22 @@ G1CollectorPolicy::G1CollectorPolicy() :
 
   _gc_overhead_perc(0.0) {
 
+  uintx confidence_perc = G1ConfidencePercent;
+  // Put an artificial ceiling on this so that it's not set to a silly value.
+  if (confidence_perc > 100) {
+    confidence_perc = 100;
+    warning("G1ConfidencePercent is set to a value that is too large, "
+            "it's been updated to %u", confidence_perc);
+  }
+  // '_sigma' must be initialized before the SurvRateGroups below because they
+  // indirecty access '_sigma' trough the 'this' pointer in their constructor.
+  _sigma = (double) confidence_perc / 100.0;
+
+  _short_lived_surv_rate_group =
+    new SurvRateGroup(this, "Short Lived", G1YoungSurvRateNumRegionsSummary);
+  _survivor_surv_rate_group =
+    new SurvRateGroup(this, "Survivor", G1YoungSurvRateNumRegionsSummary);
+
   // Set up the region size and associated fields. Given that the
   // policy is created before the heap, we have to set this up here,
   // so it's done as soon as possible.
@@ -283,15 +291,6 @@ G1CollectorPolicy::G1CollectorPolicy() :
   double time_slice  = (double) GCPauseIntervalMillis / 1000.0;
   _mmu_tracker = new G1MMUTrackerQueue(time_slice, max_gc_time);
 
-  uintx confidence_perc = G1ConfidencePercent;
-  // Put an artificial ceiling on this so that it's not set to a silly value.
-  if (confidence_perc > 100) {
-    confidence_perc = 100;
-    warning("G1ConfidencePercent is set to a value that is too large, "
-            "it's been updated to %u", confidence_perc);
-  }
-  _sigma = (double) confidence_perc / 100.0;
-
   // start conservatively (around 50ms is about right)
   _concurrent_mark_remark_times_ms->add(0.05);
   _concurrent_mark_cleanup_times_ms->add(0.20);
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1MarkSweep.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1MarkSweep.hpp
index cdde980d306..e8d8c307676 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1MarkSweep.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1MarkSweep.hpp
@@ -46,9 +46,6 @@ class ReferenceProcessor;
 class G1PrepareCompactClosure;
 
 class G1MarkSweep : AllStatic {
-  friend class VM_G1MarkSweep;
-  friend class Scavenge;
-
  public:
 
   static void invoke_at_safepoint(ReferenceProcessor* rp,
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.cpp b/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.cpp
index d972b5cc71c..008002566da 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.cpp
@@ -45,7 +45,8 @@
 #include "utilities/bitMap.inline.hpp"
 
 G1PageBasedVirtualSpace::G1PageBasedVirtualSpace() : _low_boundary(NULL),
-  _high_boundary(NULL), _committed(), _page_size(0), _special(false), _executable(false) {
+  _high_boundary(NULL), _committed(), _page_size(0), _special(false),
+  _dirty(), _executable(false) {
 }
 
 bool G1PageBasedVirtualSpace::initialize_with_granularity(ReservedSpace rs, size_t page_size) {
@@ -66,6 +67,9 @@ bool G1PageBasedVirtualSpace::initialize_with_granularity(ReservedSpace rs, size
   assert(_committed.size() == 0, "virtual space initialized more than once");
   uintx size_in_bits = rs.size() / page_size;
   _committed.resize(size_in_bits, /* in_resource_area */ false);
+  if (_special) {
+    _dirty.resize(size_in_bits, /* in_resource_area */ false);
+  }
 
   return true;
 }
@@ -84,6 +88,7 @@ void G1PageBasedVirtualSpace::release() {
   _executable             = false;
   _page_size              = 0;
   _committed.resize(0, false);
+  _dirty.resize(0, false);
 }
 
 size_t G1PageBasedVirtualSpace::committed_size() const {
@@ -120,34 +125,43 @@ size_t G1PageBasedVirtualSpace::byte_size_for_pages(size_t num) {
   return num * _page_size;
 }
 
-MemRegion G1PageBasedVirtualSpace::commit(uintptr_t start, size_t size_in_pages) {
+bool G1PageBasedVirtualSpace::commit(uintptr_t start, size_t size_in_pages) {
   // We need to make sure to commit all pages covered by the given area.
   guarantee(is_area_uncommitted(start, size_in_pages), "Specified area is not uncommitted");
 
-  if (!_special) {
+  bool zero_filled = true;
+  uintptr_t end = start + size_in_pages;
+
+  if (_special) {
+    // Check for dirty pages and update zero_filled if any found.
+    if (_dirty.get_next_one_offset(start,end) < end) {
+      zero_filled = false;
+      _dirty.clear_range(start, end);
+    }
+  } else {
     os::commit_memory_or_exit(page_start(start), byte_size_for_pages(size_in_pages), _executable,
                               err_msg("Failed to commit pages from "SIZE_FORMAT" of length "SIZE_FORMAT, start, size_in_pages));
   }
-  _committed.set_range(start, start + size_in_pages);
+  _committed.set_range(start, end);
 
-  MemRegion result((HeapWord*)page_start(start), byte_size_for_pages(size_in_pages) / HeapWordSize);
   if (AlwaysPreTouch) {
-    os::pretouch_memory((char*)result.start(), (char*)result.end());
+    os::pretouch_memory(page_start(start), page_start(end));
   }
-  return result;
+  return zero_filled;
 }
 
-MemRegion G1PageBasedVirtualSpace::uncommit(uintptr_t start, size_t size_in_pages) {
+void G1PageBasedVirtualSpace::uncommit(uintptr_t start, size_t size_in_pages) {
   guarantee(is_area_committed(start, size_in_pages), "checking");
 
-  if (!_special) {
+  if (_special) {
+    // Mark that memory is dirty. If committed again the memory might
+    // need to be cleared explicitly.
+    _dirty.set_range(start, start + size_in_pages);
+  } else {
     os::uncommit_memory(page_start(start), byte_size_for_pages(size_in_pages));
   }
 
   _committed.clear_range(start, start + size_in_pages);
-
-  MemRegion result((HeapWord*)page_start(start), byte_size_for_pages(size_in_pages) / HeapWordSize);
-  return result;
 }
 
 bool G1PageBasedVirtualSpace::contains(const void* p) const {
@@ -157,7 +171,7 @@ bool G1PageBasedVirtualSpace::contains(const void* p) const {
 #ifndef PRODUCT
 void G1PageBasedVirtualSpace::print_on(outputStream* out) {
   out->print   ("Virtual space:");
-  if (special()) out->print(" (pinned in memory)");
+  if (_special) out->print(" (pinned in memory)");
   out->cr();
   out->print_cr(" - committed: " SIZE_FORMAT, committed_size());
   out->print_cr(" - reserved:  " SIZE_FORMAT, reserved_size());
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.hpp
index 972a69b2e8f..fb2c78415f9 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.hpp
@@ -49,6 +49,12 @@ class G1PageBasedVirtualSpace VALUE_OBJ_CLASS_SPEC {
   // Bitmap used for verification of commit/uncommit operations.
   BitMap _committed;
 
+  // Bitmap used to keep track of which pages are dirty or not for _special
+  // spaces. This is needed because for those spaces the underlying memory
+  // will only be zero filled the first time it is committed. Calls to commit
+  // will use this bitmap and return whether or not the memory is zero filled.
+  BitMap _dirty;
+
   // Indicates that the entire space has been committed and pinned in memory,
   // os::commit_memory() or os::uncommit_memory() have no function.
   bool _special;
@@ -71,12 +77,11 @@ class G1PageBasedVirtualSpace VALUE_OBJ_CLASS_SPEC {
  public:
 
   // Commit the given area of pages starting at start being size_in_pages large.
-  MemRegion commit(uintptr_t start, size_t size_in_pages);
+  // Returns true if the given area is zero filled upon completion.
+  bool commit(uintptr_t start, size_t size_in_pages);
 
   // Uncommit the given area of pages starting at start being size_in_pages large.
-  MemRegion uncommit(uintptr_t start, size_t size_in_pages);
-
-  bool special() const { return _special; }
+  void uncommit(uintptr_t start, size_t size_in_pages);
 
   // Initialization
   G1PageBasedVirtualSpace();
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.cpp b/hotspot/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.cpp
index 41eb0265dbf..68d967c764a 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.cpp
@@ -67,9 +67,9 @@ class G1RegionsLargerThanCommitSizeMapper : public G1RegionToSpaceMapper {
   }
 
   virtual void commit_regions(uintptr_t start_idx, size_t num_regions) {
-    _storage.commit(start_idx * _pages_per_region, num_regions * _pages_per_region);
+    bool zero_filled = _storage.commit(start_idx * _pages_per_region, num_regions * _pages_per_region);
     _commit_map.set_range(start_idx, start_idx + num_regions);
-    fire_on_commit(start_idx, num_regions, true);
+    fire_on_commit(start_idx, num_regions, zero_filled);
   }
 
   virtual void uncommit_regions(uintptr_t start_idx, size_t num_regions) {
@@ -117,8 +117,7 @@ class G1RegionsSmallerThanCommitSizeMapper : public G1RegionToSpaceMapper {
       uint old_refcount = _refcounts.get_by_index(idx);
       bool zero_filled = false;
       if (old_refcount == 0) {
-        _storage.commit(idx, 1);
-        zero_filled = true;
+        zero_filled = _storage.commit(idx, 1);
       }
       _refcounts.set_by_index(idx, old_refcount + 1);
       _commit_map.set_bit(i);
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp
index 468d109803b..fb9d348789e 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp
@@ -31,7 +31,6 @@
 // collection set.
 
 class G1CollectedHeap;
-class CardTableModRefBarrierSet;
 class ConcurrentG1Refine;
 class G1ParPushHeapRSClosure;
 
diff --git a/hotspot/src/share/vm/memory/heap.cpp b/hotspot/src/share/vm/memory/heap.cpp
index 5ba099e78e8..5501700312e 100644
--- a/hotspot/src/share/vm/memory/heap.cpp
+++ b/hotspot/src/share/vm/memory/heap.cpp
@@ -279,10 +279,12 @@ size_t CodeHeap::alignment_offset() const {
   return sizeof(HeapBlock) & (_segment_size - 1);
 }
 
-// Finds the next free heapblock. If the current one is free, that it returned
-void* CodeHeap::next_free(HeapBlock* b) const {
-  // Since free blocks are merged, there is max. on free block
-  // between two used ones
+// Returns the current block if available and used.
+// If not, it returns the subsequent block (if available), NULL otherwise.
+// Free blocks are merged, therefore there is at most one free block
+// between two used ones. As a result, the subsequent block (if available) is
+// guaranteed to be used.
+void* CodeHeap::next_used(HeapBlock* b) const {
   if (b != NULL && b->free()) b = next_block(b);
   assert(b == NULL || !b->free(), "must be in use or at end of heap");
   return (b == NULL) ? NULL : b->allocated_space();
diff --git a/hotspot/src/share/vm/memory/heap.hpp b/hotspot/src/share/vm/memory/heap.hpp
index 4fdbeabbfc3..45b43ce06c1 100644
--- a/hotspot/src/share/vm/memory/heap.hpp
+++ b/hotspot/src/share/vm/memory/heap.hpp
@@ -123,7 +123,7 @@ class CodeHeap : public CHeapObj<mtCode> {
   FreeBlock* search_freelist(size_t length);
 
   // Iteration helpers
-  void*      next_free(HeapBlock* b) const;
+  void*      next_used(HeapBlock* b) const;
   HeapBlock* first_block() const;
   HeapBlock* next_block(HeapBlock* b) const;
   HeapBlock* block_start(void* p) const;
@@ -158,9 +158,9 @@ class CodeHeap : public CHeapObj<mtCode> {
   int    freelist_length()       const           { return _freelist_length; } // number of elements in the freelist
 
   // returns the first block or NULL
-  void* first() const       { return next_free(first_block()); }
+  void* first() const       { return next_used(first_block()); }
   // returns the next block given a block p or NULL
-  void* next(void* p) const { return next_free(next_block(block_start(p))); }
+  void* next(void* p) const { return next_used(next_block(block_start(p))); }
 
   // Statistics
   size_t capacity() const;
diff --git a/hotspot/src/share/vm/memory/metaspace.cpp b/hotspot/src/share/vm/memory/metaspace.cpp
index de7ea1abee1..7ef45f4bb25 100644
--- a/hotspot/src/share/vm/memory/metaspace.cpp
+++ b/hotspot/src/share/vm/memory/metaspace.cpp
@@ -3170,7 +3170,9 @@ void Metaspace::global_initialize() {
     }
 
     // the min_misc_data_size and min_misc_code_size estimates are based on
-    // MetaspaceShared::generate_vtable_methods()
+    // MetaspaceShared::generate_vtable_methods().
+    // The minimum size only accounts for the vtable methods. Any size less than the
+    // minimum required size would cause vm crash when allocating the vtable methods.
     uint min_misc_data_size = align_size_up(
       MetaspaceShared::num_virtuals * MetaspaceShared::vtbl_list_size * sizeof(void*), max_alignment);
 
@@ -3336,6 +3338,10 @@ void Metaspace::initialize(Mutex* lock, MetaspaceType type) {
   Metachunk* new_chunk = get_initialization_chunk(NonClassType,
                                                   word_size,
                                                   vsm()->medium_chunk_bunch());
+  // For dumping shared archive, report error if allocation has failed.
+  if (DumpSharedSpaces && new_chunk == NULL) {
+    report_insufficient_metaspace(MetaspaceAux::committed_bytes() + word_size * BytesPerWord);
+  }
   assert(!DumpSharedSpaces || new_chunk != NULL, "should have enough space for both chunks");
   if (new_chunk != NULL) {
     // Add to this manager's list of chunks in use and current_chunk().
@@ -3349,6 +3355,11 @@ void Metaspace::initialize(Mutex* lock, MetaspaceType type) {
                                                       class_vsm()->medium_chunk_bunch());
     if (class_chunk != NULL) {
       class_vsm()->add_chunk(class_chunk, true);
+    } else {
+      // For dumping shared archive, report error if allocation has failed.
+      if (DumpSharedSpaces) {
+        report_insufficient_metaspace(MetaspaceAux::committed_bytes() + class_word_size * BytesPerWord);
+      }
     }
   }
 
@@ -3829,11 +3840,13 @@ class TestVirtualSpaceNodeTest {
       assert(cm.sum_free_chunks() == 2*MediumChunk, "sizes should add up");
     }
 
-    { // 4 pages of VSN is committed, some is used by chunks
+    const size_t page_chunks = 4 * (size_t)os::vm_page_size() / BytesPerWord;
+    // This doesn't work for systems with vm_page_size >= 16K.
+    if (page_chunks < MediumChunk) {
+      // 4 pages of VSN is committed, some is used by chunks
       ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk);
       VirtualSpaceNode vsn(vsn_test_size_bytes);
-      const size_t page_chunks = 4 * (size_t)os::vm_page_size() / BytesPerWord;
-      assert(page_chunks < MediumChunk, "Test expects medium chunks to be at least 4*page_size");
+
       vsn.initialize();
       vsn.expand_by(page_chunks, page_chunks);
       vsn.get_chunk_vs(SmallChunk);
diff --git a/hotspot/src/share/vm/opto/cfgnode.hpp b/hotspot/src/share/vm/opto/cfgnode.hpp
index e795483e3cb..fc3235afecd 100644
--- a/hotspot/src/share/vm/opto/cfgnode.hpp
+++ b/hotspot/src/share/vm/opto/cfgnode.hpp
@@ -361,22 +361,36 @@ public:
 #endif
 };
 
-class IfTrueNode : public CProjNode {
+class IfProjNode : public CProjNode {
 public:
-  IfTrueNode( IfNode *ifnode ) : CProjNode(ifnode,1) {
+  IfProjNode(IfNode *ifnode, uint idx) : CProjNode(ifnode,idx) {}
+  virtual Node *Identity(PhaseTransform *phase);
+
+protected:
+  // Type of If input when this branch is always taken
+  virtual bool always_taken(const TypeTuple* t) const = 0;
+};
+
+class IfTrueNode : public IfProjNode {
+public:
+  IfTrueNode( IfNode *ifnode ) : IfProjNode(ifnode,1) {
     init_class_id(Class_IfTrue);
   }
   virtual int Opcode() const;
-  virtual Node *Identity( PhaseTransform *phase );
+
+protected:
+  virtual bool always_taken(const TypeTuple* t) const { return t == TypeTuple::IFTRUE; }
 };
 
-class IfFalseNode : public CProjNode {
+class IfFalseNode : public IfProjNode {
 public:
-  IfFalseNode( IfNode *ifnode ) : CProjNode(ifnode,0) {
+  IfFalseNode( IfNode *ifnode ) : IfProjNode(ifnode,0) {
     init_class_id(Class_IfFalse);
   }
   virtual int Opcode() const;
-  virtual Node *Identity( PhaseTransform *phase );
+
+protected:
+  virtual bool always_taken(const TypeTuple* t) const { return t == TypeTuple::IFFALSE; }
 };
 
 
diff --git a/hotspot/src/share/vm/opto/ifnode.cpp b/hotspot/src/share/vm/opto/ifnode.cpp
index 7b5f0d7b4be..493d4a021b8 100644
--- a/hotspot/src/share/vm/opto/ifnode.cpp
+++ b/hotspot/src/share/vm/opto/ifnode.cpp
@@ -1122,12 +1122,21 @@ void IfNode::dominated_by( Node *prev_dom, PhaseIterGVN *igvn ) {
 
 //------------------------------Identity---------------------------------------
 // If the test is constant & we match, then we are the input Control
-Node *IfTrueNode::Identity( PhaseTransform *phase ) {
+Node *IfProjNode::Identity(PhaseTransform *phase) {
   // Can only optimize if cannot go the other way
   const TypeTuple *t = phase->type(in(0))->is_tuple();
-  return ( t == TypeTuple::IFNEITHER || t == TypeTuple::IFTRUE )
-    ? in(0)->in(0)              // IfNode control
-    : this;                     // no progress
+  if (t == TypeTuple::IFNEITHER ||
+      // kill dead branch first otherwise the IfNode's control will
+      // have 2 control uses (the IfNode that doesn't go away because
+      // it still has uses and this branch of the
+      // If). Node::has_special_unique_user() will cause this node to
+      // be reprocessed once the dead branch is killed.
+      (always_taken(t) && in(0)->outcnt() == 1)) {
+    // IfNode control
+    return in(0)->in(0);
+  }
+  // no progress
+  return this;
 }
 
 //------------------------------dump_spec--------------------------------------
@@ -1195,13 +1204,3 @@ static IfNode* idealize_test(PhaseGVN* phase, IfNode* iff) {
   // Progress
   return iff;
 }
-
-//------------------------------Identity---------------------------------------
-// If the test is constant & we match, then we are the input Control
-Node *IfFalseNode::Identity( PhaseTransform *phase ) {
-  // Can only optimize if cannot go the other way
-  const TypeTuple *t = phase->type(in(0))->is_tuple();
-  return ( t == TypeTuple::IFNEITHER || t == TypeTuple::IFFALSE )
-    ? in(0)->in(0)              // IfNode control
-    : this;                     // no progress
-}
diff --git a/hotspot/src/share/vm/opto/node.cpp b/hotspot/src/share/vm/opto/node.cpp
index 29cd82e4acc..8ed950a021e 100644
--- a/hotspot/src/share/vm/opto/node.cpp
+++ b/hotspot/src/share/vm/opto/node.cpp
@@ -1080,18 +1080,21 @@ bool Node::has_special_unique_user() const {
   assert(outcnt() == 1, "match only for unique out");
   Node* n = unique_out();
   int op  = Opcode();
-  if( this->is_Store() ) {
+  if (this->is_Store()) {
     // Condition for back-to-back stores folding.
     return n->Opcode() == op && n->in(MemNode::Memory) == this;
   } else if (this->is_Load()) {
     // Condition for removing an unused LoadNode from the MemBarAcquire precedence input
     return n->Opcode() == Op_MemBarAcquire;
-  } else if( op == Op_AddL ) {
+  } else if (op == Op_AddL) {
     // Condition for convL2I(addL(x,y)) ==> addI(convL2I(x),convL2I(y))
     return n->Opcode() == Op_ConvL2I && n->in(1) == this;
-  } else if( op == Op_SubI || op == Op_SubL ) {
+  } else if (op == Op_SubI || op == Op_SubL) {
     // Condition for subI(x,subI(y,z)) ==> subI(addI(x,z),y)
     return n->Opcode() == op && n->in(2) == this;
+  } else if (is_If() && (n->is_IfFalse() || n->is_IfTrue())) {
+    // See IfProjNode::Identity()
+    return true;
   }
   return false;
 };
diff --git a/hotspot/src/share/vm/runtime/globals.hpp b/hotspot/src/share/vm/runtime/globals.hpp
index 7e29670fb18..6d56c2f93d6 100644
--- a/hotspot/src/share/vm/runtime/globals.hpp
+++ b/hotspot/src/share/vm/runtime/globals.hpp
@@ -2951,10 +2951,6 @@ class CommandLineFlags {
   develop(intx, MallocCatchPtr, -1,                                         \
           "Hit breakpoint when mallocing/freeing this pointer")             \
                                                                             \
-  notproduct(intx, AssertRepeat, 1,                                         \
-          "number of times to evaluate expression in assert "               \
-          "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \
-                                                                            \
   notproduct(ccstrlist, SuppressErrorAt, "",                                \
           "List of assertions (file:line) to muzzle")                       \
                                                                             \
diff --git a/hotspot/src/share/vm/runtime/os.cpp b/hotspot/src/share/vm/runtime/os.cpp
index 665688b6808..31cffe27467 100644
--- a/hotspot/src/share/vm/runtime/os.cpp
+++ b/hotspot/src/share/vm/runtime/os.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -547,20 +547,16 @@ static void verify_memory(void* ptr) {
 // This function supports testing of the malloc out of memory
 // condition without really running the system out of memory.
 //
-static u_char* testMalloc(size_t alloc_size) {
-  assert(MallocMaxTestWords > 0, "sanity check");
+static bool has_reached_max_malloc_test_peak(size_t alloc_size) {
+  if (MallocMaxTestWords > 0) {
+    jint words = (jint)(alloc_size / BytesPerWord);
 
-  if ((cur_malloc_words + (alloc_size / BytesPerWord)) > MallocMaxTestWords) {
-    return NULL;
+    if ((cur_malloc_words + words) > MallocMaxTestWords) {
+      return true;
+    }
+    Atomic::add(words, (volatile jint *)&cur_malloc_words);
   }
-
-  u_char* ptr = (u_char*)::malloc(alloc_size);
-
-  if (ptr != NULL) {
-    Atomic::add(((jint) (alloc_size / BytesPerWord)),
-                (volatile jint *) &cur_malloc_words);
-  }
-  return ptr;
+  return false;
 }
 
 void* os::malloc(size_t size, MEMFLAGS flags) {
@@ -608,13 +604,14 @@ void* os::malloc(size_t size, MEMFLAGS memflags, const NativeCallStack& stack) {
 
   NOT_PRODUCT(if (MallocVerifyInterval > 0) check_heap());
 
-  u_char* ptr;
-  if (MallocMaxTestWords > 0) {
-    ptr = testMalloc(alloc_size);
-  } else {
-    ptr = (u_char*)::malloc(alloc_size);
+  // For the test flag -XX:MallocMaxTestWords
+  if (has_reached_max_malloc_test_peak(size)) {
+    return NULL;
   }
 
+  u_char* ptr;
+  ptr = (u_char*)::malloc(alloc_size);
+
 #ifdef ASSERT
   if (ptr == NULL) {
     return NULL;
@@ -642,6 +639,11 @@ void* os::realloc(void *memblock, size_t size, MEMFLAGS flags) {
 
 void* os::realloc(void *memblock, size_t size, MEMFLAGS memflags, const NativeCallStack& stack) {
 
+  // For the test flag -XX:MallocMaxTestWords
+  if (has_reached_max_malloc_test_peak(size)) {
+    return NULL;
+  }
+
 #ifndef ASSERT
   NOT_PRODUCT(inc_stat_counter(&num_mallocs, 1));
   NOT_PRODUCT(inc_stat_counter(&alloc_bytes, size));
diff --git a/hotspot/src/share/vm/shark/llvmHeaders.hpp b/hotspot/src/share/vm/shark/llvmHeaders.hpp
index 05ef7fea1d3..b4bd45b8f52 100644
--- a/hotspot/src/share/vm/shark/llvmHeaders.hpp
+++ b/hotspot/src/share/vm/shark/llvmHeaders.hpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2008, 2009, 2010 Red Hat, Inc.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -87,30 +87,7 @@
   #undef assert
 #endif
 
-// from hotspot/src/share/vm/utilities/debug.hpp
-#ifdef ASSERT
-#ifndef USE_REPEATED_ASSERTS
-#define assert(p, msg)                                                       \
-do {                                                                         \
-  if (!(p)) {                                                                \
-    report_vm_error(__FILE__, __LINE__, "assert(" #p ") failed", msg);       \
-    BREAKPOINT;                                                              \
-  }                                                                          \
-} while (0)
-#else // #ifndef USE_REPEATED_ASSERTS
-#define assert(p, msg)
-do {                                                                         \
-  for (int __i = 0; __i < AssertRepeat; __i++) {                             \
-    if (!(p)) {                                                              \
-      report_vm_error(__FILE__, __LINE__, "assert(" #p ") failed", msg);     \
-      BREAKPOINT;                                                            \
-    }                                                                        \
-  }                                                                          \
-} while (0)
-#endif // #ifndef USE_REPEATED_ASSERTS
-#else
-  #define assert(p, msg)
-#endif
+#define assert(p, msg) vmassert(p, msg)
 
 #ifdef DEBUG
   #undef DEBUG
diff --git a/hotspot/src/share/vm/utilities/debug.cpp b/hotspot/src/share/vm/utilities/debug.cpp
index adacdc4233f..260aadfb7b2 100644
--- a/hotspot/src/share/vm/utilities/debug.cpp
+++ b/hotspot/src/share/vm/utilities/debug.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -273,6 +273,14 @@ void report_out_of_shared_space(SharedSpaceType shared_space) {
    exit(2);
 }
 
+void report_insufficient_metaspace(size_t required_size) {
+  warning("\nThe MaxMetaspaceSize of " UINTX_FORMAT " bytes is not large enough.\n"
+          "Either don't specify the -XX:MaxMetaspaceSize=<size>\n"
+          "or increase the size to at least " SIZE_FORMAT ".\n",
+          MaxMetaspaceSize, required_size);
+  exit(2);
+}
+
 void report_java_out_of_memory(const char* message) {
   static jint out_of_memory_reported = 0;
 
@@ -326,9 +334,9 @@ void test_error_handler() {
 
   // Keep this in sync with test/runtime/6888954/vmerrors.sh.
   switch (n) {
-    case  1: assert(str == NULL, "expected null");
-    case  2: assert(num == 1023 && *str == 'X',
-                    err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str));
+    case  1: vmassert(str == NULL, "expected null");
+    case  2: vmassert(num == 1023 && *str == 'X',
+                      err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str));
     case  3: guarantee(str == NULL, "expected null");
     case  4: guarantee(num == 1023 && *str == 'X',
                        err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str));
diff --git a/hotspot/src/share/vm/utilities/debug.hpp b/hotspot/src/share/vm/utilities/debug.hpp
index 7995e6c085d..85fae1733a5 100644
--- a/hotspot/src/share/vm/utilities/debug.hpp
+++ b/hotspot/src/share/vm/utilities/debug.hpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -105,58 +105,42 @@ void FormatBuffer<bufsz>::append(const char* format, ...) {
   va_end(argp);
 }
 
-// Used to format messages for assert(), guarantee(), fatal(), etc.
+// Used to format messages for vmassert(), guarantee(), fatal(), etc.
 typedef FormatBuffer<> err_msg;
 typedef FormatBufferResource err_msg_res;
 
 // assertions
-#ifdef ASSERT
-#ifndef USE_REPEATED_ASSERTS
-#define assert(p, msg)                                                       \
+#ifndef ASSERT
+#define vmassert(p, msg)
+#else
+// Note: message says "assert" rather than "vmassert" for backward
+// compatibility with tools that parse/match the message text.
+#define vmassert(p, msg)                                                     \
 do {                                                                         \
   if (!(p)) {                                                                \
     report_vm_error(__FILE__, __LINE__, "assert(" #p ") failed", msg);       \
     BREAKPOINT;                                                              \
   }                                                                          \
 } while (0)
-#else // #ifndef USE_REPEATED_ASSERTS
-#define assert(p, msg)
-do {                                                                         \
-  for (int __i = 0; __i < AssertRepeat; __i++) {                             \
-    if (!(p)) {                                                              \
-      report_vm_error(__FILE__, __LINE__, "assert(" #p ") failed", msg);     \
-      BREAKPOINT;                                                            \
-    }                                                                        \
-  }                                                                          \
-} while (0)
-#endif // #ifndef USE_REPEATED_ASSERTS
+#endif
 
-// This version of assert is for use with checking return status from
+// For backward compatibility.
+#define assert(p, msg) vmassert(p, msg)
+
+// This version of vmassert is for use with checking return status from
 // library calls that return actual error values eg. EINVAL,
 // ENOMEM etc, rather than returning -1 and setting errno.
 // When the status is not what is expected it is very useful to know
 // what status was actually returned, so we pass the status variable as
 // an extra arg and use strerror to convert it to a meaningful string
 // like "Invalid argument", "out of memory" etc
-#define assert_status(p, status, msg)                                        \
-do {                                                                         \
-  if (!(p)) {                                                                \
-    report_vm_error(__FILE__, __LINE__, "assert(" #p ") failed",             \
-                    err_msg("error %s(%d) %s", strerror(status),             \
-                            status, msg));                                   \
-    BREAKPOINT;                                                              \
-  }                                                                          \
-} while (0)
+#define vmassert_status(p, status, msg) \
+  vmassert(p, err_msg("error %s(%d), %s", strerror(status), status, msg))
 
-// Do not assert this condition if there's already another error reported.
-#define assert_if_no_error(cond,msg) assert((cond) || is_error_reported(), msg)
-#else // #ifdef ASSERT
-  #define assert(p,msg)
-  #define assert_status(p,status,msg)
-  #define assert_if_no_error(cond,msg)
-#endif // #ifdef ASSERT
+// For backward compatibility.
+#define assert_status(p, status, msg) vmassert_status(p, status, msg)
 
-// guarantee is like assert except it's always executed -- use it for
+// guarantee is like vmassert except it's always executed -- use it for
 // cheap tests that catch errors that would otherwise be hard to find.
 // guarantee is also used for Verify options.
 #define guarantee(p, msg)                                                    \
@@ -225,21 +209,22 @@ void report_untested(const char* file, int line, const char* message);
 
 void warning(const char* format, ...) ATTRIBUTE_PRINTF(1, 2);
 
-#ifdef ASSERT
-// Compile-time asserts.
-template <bool> struct StaticAssert;
-template <> struct StaticAssert<true> {};
+// Compile-time asserts.  Cond must be a compile-time constant expression that
+// is convertible to bool.  STATIC_ASSERT() can be used anywhere a declaration
+// may appear.
+//
+// Implementation Note: STATIC_ASSERT_FAILURE<true> provides a value member
+// rather than type member that could be used directly in the typedef, because
+// a type member would require conditional use of "typename", depending on
+// whether Cond is dependent or not.  The use of a value member leads to the
+// use of an array type.
 
-// Only StaticAssert<true> is defined, so if cond evaluates to false we get
-// a compile time exception when trying to use StaticAssert<false>.
-#define STATIC_ASSERT(cond)                   \
-  do {                                        \
-    StaticAssert<(cond)> DUMMY_STATIC_ASSERT; \
-    (void)DUMMY_STATIC_ASSERT; /* ignore */   \
-  } while (false)
-#else
-#define STATIC_ASSERT(cond)
-#endif
+template<bool x> struct STATIC_ASSERT_FAILURE;
+template<> struct STATIC_ASSERT_FAILURE<true> { enum { value = 1 }; };
+
+#define STATIC_ASSERT(Cond)                             \
+  typedef char STATIC_ASSERT_FAILURE_ ## __LINE__ [     \
+    STATIC_ASSERT_FAILURE< (Cond) >::value ]
 
 // out of shared space reporting
 enum SharedSpaceType {
@@ -251,6 +236,8 @@ enum SharedSpaceType {
 
 void report_out_of_shared_space(SharedSpaceType space_type);
 
+void report_insufficient_metaspace(size_t required_size);
+
 // out of memory reporting
 void report_java_out_of_memory(const char* message);
 
@@ -258,7 +245,7 @@ void report_java_out_of_memory(const char* message);
 bool is_error_reported();
 void set_error_reported();
 
-/* Test assert(), fatal(), guarantee(), etc. */
+/* Test vmassert(), fatal(), guarantee(), etc. */
 NOT_PRODUCT(void test_error_handler();)
 
 void pd_ps(frame f);
diff --git a/hotspot/src/share/vm/utilities/xmlstream.cpp b/hotspot/src/share/vm/utilities/xmlstream.cpp
index dc1fd1e599a..394c063e8b4 100644
--- a/hotspot/src/share/vm/utilities/xmlstream.cpp
+++ b/hotspot/src/share/vm/utilities/xmlstream.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -33,6 +33,10 @@
 #include "runtime/vmThread.hpp"
 #include "utilities/xmlstream.hpp"
 
+// Do not assert this condition if there's already another error reported.
+#define assert_if_no_error(cond, msg) \
+  vmassert((cond) || is_error_reported(), msg)
+
 void xmlStream::initialize(outputStream* out) {
   _out = out;
   _last_flush = 0;
diff --git a/hotspot/test/TEST.groups b/hotspot/test/TEST.groups
index dd70a676da5..8c52e3ac175 100644
--- a/hotspot/test/TEST.groups
+++ b/hotspot/test/TEST.groups
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -69,7 +69,6 @@ needs_jdk = \
   gc/metaspace/TestPerfCountersAndMemoryPools.java \
   runtime/6819213/TestBootNativeLibraryPath.java \
   runtime/7158988/FieldMonitor.java \
-  runtime/7194254/Test7194254.java \
   runtime/Metaspace/FragmentMetaspace.java \
   runtime/NMT/BaselineWithParameter.java \
   runtime/NMT/JcmdBaselineDetail.java \
@@ -94,6 +93,7 @@ needs_jdk = \
   runtime/NMT/VirtualAllocTestType.java \
   runtime/RedefineObject/TestRedefineObject.java \
   runtime/Thread/TestThreadDumpMonitorContention.java \
+  runtime/Thread/ThreadPriorities.java \
   runtime/XCheckJniJsig/XCheckJSig.java \
   serviceability/attach/AttachWithStalePidFile.java \
   serviceability/sa/jmap-hprof/JMapHProfLargeHeapTest.java \
@@ -232,7 +232,8 @@ needs_g1gc = \
   gc/g1/ \
   gc/metaspace/G1AddMetaspaceDependency.java \
   gc/metaspace/TestMetaspacePerfCounters.java \
-  gc/startup_warnings/TestG1.java 
+  gc/startup_warnings/TestG1.java \
+  gc/whitebox/TestConcMarkCycleWB.java
 
 # All tests that explicitly set the serial GC
 #
@@ -357,7 +358,8 @@ hotspot_compiler_2 = \
   compiler/inlining/ \
   compiler/integerArithmetic/ \
   compiler/interpreter/ \
-  -compiler/codegen/7184394
+  -compiler/codegen/7184394 \
+  -compiler/codecache/stress
   
 hotspot_compiler_3 = \
   compiler/intrinsics/ \
diff --git a/hotspot/test/compiler/codecache/jmx/PoolsIndependenceTest.java b/hotspot/test/compiler/codecache/jmx/PoolsIndependenceTest.java
index a2ea70a1fe2..04551a2d2df 100644
--- a/hotspot/test/compiler/codecache/jmx/PoolsIndependenceTest.java
+++ b/hotspot/test/compiler/codecache/jmx/PoolsIndependenceTest.java
@@ -37,6 +37,7 @@ import sun.hotspot.code.BlobType;
 
 /*
  * @test PoolsIndependenceTest
+ * @ignore 8068385
  * @library /testlibrary /../../test/lib
  * @build PoolsIndependenceTest
  * @run main ClassFileInstaller sun.hotspot.WhiteBox
diff --git a/hotspot/test/compiler/codecache/stress/CodeCacheStressRunner.java b/hotspot/test/compiler/codecache/stress/CodeCacheStressRunner.java
new file mode 100644
index 00000000000..1a7ae636097
--- /dev/null
+++ b/hotspot/test/compiler/codecache/stress/CodeCacheStressRunner.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+import com.oracle.java.testlibrary.TimeLimitedRunner;
+import com.oracle.java.testlibrary.Utils;
+
+public class CodeCacheStressRunner {
+    private final Runnable action;
+    public CodeCacheStressRunner(Runnable action) {
+        this.action = action;
+    }
+
+    protected final void runTest() {
+        Helper.startInfiniteLoopThread(action);
+        try {
+            // adjust timeout and substract vm init and exit time
+            long timeout = Utils.adjustTimeout(Utils.DEFAULT_TEST_TIMEOUT);
+            timeout *= 0.9;
+            new TimeLimitedRunner(timeout, 2.0d, this::test).call();
+        } catch (Exception e) {
+            throw new Error("Exception occurred during test execution", e);
+        }
+    }
+
+    private boolean test() {
+        Helper.TestCase obj = Helper.TestCase.get();
+        Helper.callMethod(obj.getCallable(), obj.expectedValue());
+        return true;
+    }
+
+}
diff --git a/hotspot/test/compiler/codecache/stress/Helper.java b/hotspot/test/compiler/codecache/stress/Helper.java
new file mode 100644
index 00000000000..0a4a3791b6c
--- /dev/null
+++ b/hotspot/test/compiler/codecache/stress/Helper.java
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+import java.io.BufferedInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.concurrent.Callable;
+import java.util.Random;
+
+import com.oracle.java.testlibrary.Asserts;
+import com.oracle.java.testlibrary.ByteCodeLoader;
+import com.oracle.java.testlibrary.InfiniteLoop;
+import com.oracle.java.testlibrary.Utils;
+import sun.hotspot.WhiteBox;
+
+public final class Helper {
+    public static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
+    public static final Random RNG = Utils.getRandomInstance();
+
+    private static final long THRESHOLD = WHITE_BOX.getIntxVMFlag("CompileThreshold");
+    private static final String TEST_CASE_IMPL_CLASS_NAME = "Helper$TestCaseImpl";
+    private static byte[] CLASS_DATA;
+    static {
+        try {
+            CLASS_DATA = loadClassData(TEST_CASE_IMPL_CLASS_NAME);
+        } catch (IOException e) {
+            throw new Error("TESTBUG: cannot load class byte code", e);
+        }
+    }
+
+    private Helper() {
+    }
+
+    public static void startInfiniteLoopThread(Runnable action) {
+        startInfiniteLoopThread(action, 0L);
+    }
+
+    public static void startInfiniteLoopThread(Runnable action, long millis) {
+        Thread t = new Thread(new InfiniteLoop(action, millis));
+        t.setDaemon(true);
+        t.start();
+    }
+
+    public static int callMethod(Callable<Integer> callable, int expected) {
+        int result = 0;
+        for (int i = 0; i < THRESHOLD; ++i) {
+            try {
+                result = callable.call();
+            } catch (Exception e) {
+                throw new AssertionError(
+                        "Exception occurred during test method execution", e);
+            }
+            Asserts.assertEQ(result, expected, "Method returns unexpected value");
+        }
+        return result;
+    }
+
+    private static byte[] loadClassData(String name) throws IOException {
+        try (BufferedInputStream in = new BufferedInputStream(
+                ClassLoader.getSystemResourceAsStream(name.replace(".", "/")
+                        + ".class"))) {
+            ByteArrayOutputStream result = new ByteArrayOutputStream();
+            byte[] buffer = new byte[1024];
+            int read;
+            while ((read = in.read(buffer)) != -1) {
+                result.write(buffer, 0, read);
+            }
+            return result.toByteArray();
+        }
+    }
+
+    public interface TestCase {
+
+        public static TestCase get() {
+            try {
+                Class clazz = ByteCodeLoader.load(
+                        TEST_CASE_IMPL_CLASS_NAME, CLASS_DATA);
+                return (TestCase) clazz.newInstance();
+            } catch (ReflectiveOperationException e) {
+                throw new Error(String.format(
+                        "TESTBUG: error while creating %s instance from reloaded class",
+                        TEST_CASE_IMPL_CLASS_NAME), e);
+            }
+        }
+
+        Callable<Integer> getCallable();
+        int method();
+        int expectedValue();
+    }
+
+    public static class TestCaseImpl implements TestCase {
+        private static final int RETURN_VALUE = 42;
+        private static final int RECURSION_DEPTH = 10;
+        private volatile int i;
+
+        @Override
+        public Callable<Integer> getCallable() {
+            return () -> {
+                i = 0;
+                return method();
+            };
+        }
+
+        @Override
+        public int method() {
+            ++i;
+            int result = RETURN_VALUE;
+            if (i < RECURSION_DEPTH) {
+                return result + method();
+            }
+            return result;
+        }
+
+        @Override
+        public int expectedValue() {
+            return RETURN_VALUE * RECURSION_DEPTH;
+        }
+    }
+
+}
diff --git a/hotspot/test/compiler/codecache/stress/OverloadCompileQueueTest.java b/hotspot/test/compiler/codecache/stress/OverloadCompileQueueTest.java
new file mode 100644
index 00000000000..5f52ef679ea
--- /dev/null
+++ b/hotspot/test/compiler/codecache/stress/OverloadCompileQueueTest.java
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+import java.lang.reflect.Method;
+import java.util.stream.IntStream;
+
+import com.oracle.java.testlibrary.Platform;
+
+/*
+ * @test OverloadCompileQueueTest
+ * @library /testlibrary /../../test/lib
+ * @build OverloadCompileQueueTest
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ *                              sun.hotspot.WhiteBox$WhiteBoxPermission
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:CompileCommand=dontinline,Helper$TestCase::method
+ *                   -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache OverloadCompileQueueTest
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:CompileCommand=dontinline,Helper$TestCase::method
+ *                   -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache OverloadCompileQueueTest
+ * @summary stressing code cache by overloading compile queues
+ */
+public class OverloadCompileQueueTest implements Runnable {
+    private static final int MAX_SLEEP = 10000;
+    private static final String METHOD_TO_ENQUEUE = "method";
+    private static final int LEVEL_SIMPLE = 1;
+    private static final int LEVEL_FULL_OPTIMIZATION = 4;
+    private static final boolean INTERPRETED
+            = System.getProperty("java.vm.info").startsWith("interpreted ");
+    private static final boolean TIERED_COMPILATION
+            = Helper.WHITE_BOX.getBooleanVMFlag("TieredCompilation");
+    private static final int TIERED_STOP_AT_LEVEL
+            = Helper.WHITE_BOX.getIntxVMFlag("TieredStopAtLevel").intValue();
+    private static final int[] AVAILABLE_LEVELS;
+    static {
+        if (TIERED_COMPILATION) {
+            AVAILABLE_LEVELS = IntStream
+                    .rangeClosed(LEVEL_SIMPLE, TIERED_STOP_AT_LEVEL)
+                    .toArray();
+        } else if (Platform.isServer()) {
+            AVAILABLE_LEVELS = new int[] { LEVEL_FULL_OPTIMIZATION };
+        } else if (Platform.isClient() || Platform.isMinimal()) {
+            AVAILABLE_LEVELS = new int[] { LEVEL_SIMPLE };
+        } else {
+            throw new Error(String.format(
+                    "TESTBUG: unknown VM: %s", System.getProperty("java.vm.name")));
+        }
+    }
+
+    public static void main(String[] args) {
+        if (INTERPRETED) {
+            System.err.println("Test isn't applicable for interpreter. Skip test.");
+            return;
+        }
+        new CodeCacheStressRunner(new OverloadCompileQueueTest()).runTest();
+    }
+
+    public OverloadCompileQueueTest() {
+        Helper.startInfiniteLoopThread(this::lockUnlock);
+    }
+
+    @Override
+    public void run() {
+        Helper.TestCase obj = Helper.TestCase.get();
+        Class clazz = obj.getClass();
+        Method mEnqueue;
+        try {
+            mEnqueue = clazz.getMethod(METHOD_TO_ENQUEUE);
+        } catch (NoSuchMethodException | SecurityException e) {
+            throw new Error(String.format(
+                    "TESTBUG: cannot get method '%s' of class %s",
+                    METHOD_TO_ENQUEUE, clazz.getName()), e);
+        }
+        for (int compLevel : AVAILABLE_LEVELS) {
+            Helper.WHITE_BOX.enqueueMethodForCompilation(mEnqueue, compLevel);
+        }
+    }
+
+    private void lockUnlock() {
+        try {
+            Helper.WHITE_BOX.lockCompilation();
+            Thread.sleep(Helper.RNG.nextInt(MAX_SLEEP));
+        } catch (InterruptedException e) {
+            throw new Error("TESTBUG: lockUnlocker thread was unexpectedly interrupted", e);
+        } finally {
+            Helper.WHITE_BOX.unlockCompilation();
+        }
+    }
+
+}
diff --git a/hotspot/test/compiler/codecache/stress/RandomAllocationTest.java b/hotspot/test/compiler/codecache/stress/RandomAllocationTest.java
new file mode 100644
index 00000000000..466bcc4b895
--- /dev/null
+++ b/hotspot/test/compiler/codecache/stress/RandomAllocationTest.java
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+import java.util.ArrayList;
+
+import sun.hotspot.code.BlobType;
+
+/*
+ * @test RandomAllocationTest
+ * @library /testlibrary /../../test/lib
+ * @build RandomAllocationTest
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ *                              sun.hotspot.WhiteBox$WhiteBoxPermission
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:CompileCommand=dontinline,Helper$TestCase::method
+ *                   -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache RandomAllocationTest
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:CompileCommand=dontinline,Helper$TestCase::method
+ *                   -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache RandomAllocationTest
+ * @summary stressing code cache by allocating randomly sized "dummy" code blobs
+ */
+public class RandomAllocationTest implements Runnable {
+    private static final long CODE_CACHE_SIZE
+            = Helper.WHITE_BOX.getUintxVMFlag("ReservedCodeCacheSize");
+    private static final int MAX_BLOB_SIZE = (int) (CODE_CACHE_SIZE >> 7);
+    private static final BlobType[] BLOB_TYPES
+            = BlobType.getAvailable().toArray(new BlobType[0]);
+
+    public static void main(String[] args) {
+        new CodeCacheStressRunner(new RandomAllocationTest()).runTest();
+    }
+
+    private final ArrayList<Long> blobs = new ArrayList<>();
+    @Override
+    public void run() {
+        boolean allocate = blobs.isEmpty() || Helper.RNG.nextBoolean();
+        if (allocate) {
+            int type = Helper.RNG.nextInt(BLOB_TYPES.length);
+            long addr = Helper.WHITE_BOX.allocateCodeBlob(
+                    Helper.RNG.nextInt(MAX_BLOB_SIZE), BLOB_TYPES[type].id);
+            if (addr != 0) {
+                blobs.add(addr);
+            }
+        } else {
+            int index = Helper.RNG.nextInt(blobs.size());
+            Helper.WHITE_BOX.freeCodeBlob(blobs.remove(index));
+        }
+    }
+
+}
diff --git a/hotspot/test/compiler/codecache/stress/UnexpectedDeoptimizationTest.java b/hotspot/test/compiler/codecache/stress/UnexpectedDeoptimizationTest.java
new file mode 100644
index 00000000000..f8ff8e5deb4
--- /dev/null
+++ b/hotspot/test/compiler/codecache/stress/UnexpectedDeoptimizationTest.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+/*
+ * @test UnexpectedDeoptimizationTest
+ * @library /testlibrary /../../test/lib
+ * @build UnexpectedDeoptimizationTest
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ *                              sun.hotspot.WhiteBox$WhiteBoxPermission
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:CompileCommand=dontinline,Helper$TestCase::method
+ *                   -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache -XX:-DeoptimizeRandom
+ *                   UnexpectedDeoptimizationTest
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:CompileCommand=dontinline,Helper$TestCase::method
+ *                   -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache -XX:-DeoptimizeRandom
+ *                   UnexpectedDeoptimizationTest
+ * @summary stressing code cache by forcing unexpected deoptimizations
+ */
+public class UnexpectedDeoptimizationTest implements Runnable {
+
+    public static void main(String[] args) {
+        new CodeCacheStressRunner(new UnexpectedDeoptimizationTest()).runTest();
+    }
+
+    @Override
+    public void run() {
+        Helper.WHITE_BOX.deoptimizeFrames(Helper.RNG.nextBoolean());
+    }
+
+}
diff --git a/hotspot/test/compiler/exceptions/TestRecursiveReplacedException.java b/hotspot/test/compiler/exceptions/TestRecursiveReplacedException.java
index 996d82a0feb..d3cace05343 100644
--- a/hotspot/test/compiler/exceptions/TestRecursiveReplacedException.java
+++ b/hotspot/test/compiler/exceptions/TestRecursiveReplacedException.java
@@ -25,7 +25,7 @@
  * @test
  * @bug 8054224
  * @summary Recursive method compiled by C1 is unable to catch StackOverflowError
- * @run main/othervm -Xcomp -XX:CompileOnly=Test.run -XX:+TieredCompilation -XX:TieredStopAtLevel=2 -Xss256K TestRecursiveReplacedException
+ * @run main/othervm -Xcomp -XX:CompileOnly=Test.run -XX:+TieredCompilation -XX:TieredStopAtLevel=2 -Xss392K TestRecursiveReplacedException
  *
  */
 
diff --git a/hotspot/test/compiler/floatingpoint/TestPow2.java b/hotspot/test/compiler/floatingpoint/TestPow2.java
new file mode 100644
index 00000000000..699904b6e4f
--- /dev/null
+++ b/hotspot/test/compiler/floatingpoint/TestPow2.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8063086
+ * @summary X^2 special case for C2 yields different result than interpreter
+ * @library /testlibrary /../../test/lib /compiler/whitebox
+ * @build TestPow2
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
+ *                   -XX:-BackgroundCompilation -XX:-UseOnStackReplacement TestPow2
+ *
+ */
+
+import java.lang.reflect.*;
+import sun.hotspot.WhiteBox;
+
+public class TestPow2 {
+
+    private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
+
+    private static final double base = 5350.456329377186;
+    private static final double exp = 2.0;
+
+    static double m() {
+        return Math.pow(base, exp);
+    }
+
+    static public void main(String[] args) throws NoSuchMethodException {
+        Method test_method = TestPow2.class.getDeclaredMethod("m");
+
+        double interpreter_result = m();
+
+        // Compile with C1 if possible
+        WHITE_BOX.enqueueMethodForCompilation(test_method, CompilerWhiteBoxTest.COMP_LEVEL_SIMPLE);
+
+        double c1_result = m();
+
+        WHITE_BOX.deoptimizeMethod(test_method);
+
+        // Compile it with C2 if possible
+        WHITE_BOX.enqueueMethodForCompilation(test_method, CompilerWhiteBoxTest.COMP_LEVEL_FULL_OPTIMIZATION);
+
+        double c2_result = m();
+
+        if (interpreter_result != c1_result || interpreter_result != c2_result ||
+            c1_result != c2_result) {
+            System.out.println("interpreter = " + interpreter_result + " c1 = " + c1_result + " c2 = " + c2_result);
+            throw new RuntimeException("Test Failed");
+        }
+    }
+}
diff --git a/hotspot/test/compiler/jsr292/RedefineMethodUsedByMultipleMethodHandles.java b/hotspot/test/compiler/jsr292/RedefineMethodUsedByMultipleMethodHandles.java
index 1695c35558a..920431525a8 100644
--- a/hotspot/test/compiler/jsr292/RedefineMethodUsedByMultipleMethodHandles.java
+++ b/hotspot/test/compiler/jsr292/RedefineMethodUsedByMultipleMethodHandles.java
@@ -26,6 +26,7 @@
  * @bug 8042235
  * @summary redefining method used by multiple MethodHandles crashes VM
  * @compile -XDignore.symbol.file RedefineMethodUsedByMultipleMethodHandles.java
+ * @ignore 7076820
  * @run main RedefineMethodUsedByMultipleMethodHandles
  */
 
diff --git a/hotspot/test/compiler/oracle/CheckCompileCommandOption.java b/hotspot/test/compiler/oracle/CheckCompileCommandOption.java
index b4c08155101..8248582d38c 100644
--- a/hotspot/test/compiler/oracle/CheckCompileCommandOption.java
+++ b/hotspot/test/compiler/oracle/CheckCompileCommandOption.java
@@ -172,7 +172,7 @@ public class CheckCompileCommandOption {
             out.shouldContain(expected_output);
         }
 
-        out.shouldNotContain("CompilerOracle: unrecognized line");
+        out.shouldNotContain("CompileCommand: unrecognized line");
         out.shouldHaveExitValue(0);
     }
 
@@ -183,7 +183,7 @@ public class CheckCompileCommandOption {
         pb = ProcessTools.createJavaProcessBuilder(arguments);
         out = new OutputAnalyzer(pb.start());
 
-        out.shouldContain("CompilerOracle: unrecognized line");
+        out.shouldContain("CompileCommand: unrecognized line");
         out.shouldHaveExitValue(0);
     }
 
diff --git a/hotspot/test/compiler/profiling/spectrapredefineclass/Launcher.java b/hotspot/test/compiler/profiling/spectrapredefineclass/Launcher.java
index 7a645ab0b8f..3c4f6b92bb4 100644
--- a/hotspot/test/compiler/profiling/spectrapredefineclass/Launcher.java
+++ b/hotspot/test/compiler/profiling/spectrapredefineclass/Launcher.java
@@ -28,6 +28,7 @@ import com.oracle.java.testlibrary.*;
  * @bug 8038636
  * @library /testlibrary
  * @build Agent
+ * @ignore 7076820
  * @run main ClassFileInstaller Agent
  * @run main Launcher
  * @run main/othervm -XX:-TieredCompilation -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:TypeProfileLevel=222 -XX:ReservedCodeCacheSize=3M Agent
diff --git a/hotspot/test/compiler/profiling/spectrapredefineclass_classloaders/Launcher.java b/hotspot/test/compiler/profiling/spectrapredefineclass_classloaders/Launcher.java
index 3c49cd58ea7..443f11e6c16 100644
--- a/hotspot/test/compiler/profiling/spectrapredefineclass_classloaders/Launcher.java
+++ b/hotspot/test/compiler/profiling/spectrapredefineclass_classloaders/Launcher.java
@@ -28,6 +28,7 @@ import com.oracle.java.testlibrary.*;
  * @bug 8040237
  * @library /testlibrary
  * @build Agent Test A B
+ * @ignore 7076820
  * @run main ClassFileInstaller Agent
  * @run main Launcher
  * @run main/othervm -XX:-TieredCompilation -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:TypeProfileLevel=222 -XX:ReservedCodeCacheSize=3M Agent
diff --git a/hotspot/test/compiler/rtm/locking/TestRTMDeoptOnLowAbortRatio.java b/hotspot/test/compiler/rtm/locking/TestRTMDeoptOnLowAbortRatio.java
index 128ec7bd403..ae39ffb25c0 100644
--- a/hotspot/test/compiler/rtm/locking/TestRTMDeoptOnLowAbortRatio.java
+++ b/hotspot/test/compiler/rtm/locking/TestRTMDeoptOnLowAbortRatio.java
@@ -53,6 +53,7 @@ import sun.misc.Unsafe;
  */
 public class TestRTMDeoptOnLowAbortRatio extends CommandLineOptionTest {
     private static final long LOCKING_THRESHOLD = 100L;
+    private static final long ABORT_THRESHOLD = LOCKING_THRESHOLD / 2L;
 
     private TestRTMDeoptOnLowAbortRatio() {
         super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
@@ -77,7 +78,8 @@ public class TestRTMDeoptOnLowAbortRatio extends CommandLineOptionTest {
                         useStackLock),
                 CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold",
                         TestRTMDeoptOnLowAbortRatio.LOCKING_THRESHOLD),
-                "-XX:RTMAbortThreshold=1",
+                CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold",
+                        TestRTMDeoptOnLowAbortRatio.ABORT_THRESHOLD),
                 "-XX:RTMAbortRatio=100",
                 "-XX:CompileThreshold=1",
                 "-XX:RTMRetryCount=0",
@@ -107,7 +109,7 @@ public class TestRTMDeoptOnLowAbortRatio extends CommandLineOptionTest {
 
         for (RTMLockingStatistics s : statistics) {
             if (s.getTotalLocks()
-                    == TestRTMDeoptOnLowAbortRatio.LOCKING_THRESHOLD + 1L) {
+                    == TestRTMDeoptOnLowAbortRatio.LOCKING_THRESHOLD) {
                 Asserts.assertNull(statisticsBeforeDeopt,
                         "Only one abort was expected during test run");
                 statisticsBeforeDeopt = s;
@@ -154,8 +156,7 @@ public class TestRTMDeoptOnLowAbortRatio extends CommandLineOptionTest {
             }
             for (int i = 0; i < AbortProvoker.DEFAULT_ITERATIONS; i++) {
                 AbortProvoker.verifyMonitorState(t.monitor, shouldBeInflated);
-                t.forceAbort(
-                        i == TestRTMDeoptOnLowAbortRatio.LOCKING_THRESHOLD);
+                t.forceAbort(i >= TestRTMDeoptOnLowAbortRatio.ABORT_THRESHOLD);
             }
         }
     }
diff --git a/hotspot/test/compiler/rtm/locking/TestRTMLockingThreshold.java b/hotspot/test/compiler/rtm/locking/TestRTMLockingThreshold.java
index 75a94c6d989..66daef96ff5 100644
--- a/hotspot/test/compiler/rtm/locking/TestRTMLockingThreshold.java
+++ b/hotspot/test/compiler/rtm/locking/TestRTMLockingThreshold.java
@@ -58,7 +58,7 @@ public class TestRTMLockingThreshold extends CommandLineOptionTest {
      * interrupts, VMM calls, etc. during first lock attempt.
      *
      */
-    private static final int ABORT_THRESHOLD = 10;
+    private static final int MIN_ABORT_THRESHOLD = 10;
 
     @Override
     protected void runTestCases() throws Throwable {
@@ -75,6 +75,9 @@ public class TestRTMLockingThreshold extends CommandLineOptionTest {
             boolean useStackLock) throws Throwable {
         CompilableTest test = new Test();
 
+        int abortThreshold = Math.max(lockingThreshold / 2,
+                TestRTMLockingThreshold.MIN_ABORT_THRESHOLD);
+
         OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
                 test,
                 "-XX:CompileThreshold=1",
@@ -84,7 +87,7 @@ public class TestRTMLockingThreshold extends CommandLineOptionTest {
                 "-XX:RTMTotalCountIncrRate=1",
                 "-XX:RTMRetryCount=0",
                 CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold",
-                        TestRTMLockingThreshold.ABORT_THRESHOLD),
+                        abortThreshold),
                 CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold",
                         lockingThreshold),
                 "-XX:RTMAbortRatio=100",
@@ -103,16 +106,12 @@ public class TestRTMLockingThreshold extends CommandLineOptionTest {
                 + "RTM locking statistics entries.");
 
         /**
-         * We force abort on each odd iteration, so if RTMLockingThreshold==0,
-         * then we have to make 1 call without abort to avoid rtm state
-         * transition to NoRTM (otherwise actual abort ratio will be 100%),
-         * and after that make 1 call with abort to force deoptimization.
-         * This leads us to two locks for threshold 0.
-         * For other threshold values we have to make RTMLockingThreshold + 1
-         * locks if locking threshold is even, or + 0 if odd.
+         * If RTMLockingThreshold==0, then we have to make at least 1 call.
          */
-        long expectedValue = lockingThreshold +
-                (lockingThreshold == 0L ? 2L : lockingThreshold % 2L);
+        long expectedValue = lockingThreshold;
+        if (expectedValue == 0) {
+            expectedValue++;
+        }
 
         RTMLockingStatistics statBeforeDeopt = null;
         for (RTMLockingStatistics s : statistics) {
@@ -159,15 +158,16 @@ public class TestRTMLockingThreshold extends CommandLineOptionTest {
          * Test &lt;inflate monitor&gt;
          */
         public static void main(String args[]) throws Throwable {
-            Asserts.assertGTE(args.length, 1, "One argument required.");
+            Asserts.assertGTE(args.length, 2, "Two arguments required.");
             Test t = new Test();
             boolean shouldBeInflated = Boolean.valueOf(args[0]);
+            int lockingThreshold = Integer.valueOf(args[1]);
             if (shouldBeInflated) {
                 AbortProvoker.inflateMonitor(t.monitor);
             }
             for (int i = 0; i < Test.TOTAL_ITERATIONS; i++) {
                 AbortProvoker.verifyMonitorState(t.monitor, shouldBeInflated);
-                t.lock(i % 2 == 1);
+                t.lock(i >= lockingThreshold / 2);
             }
         }
     }
diff --git a/hotspot/test/compiler/rtm/locking/TestRTMTotalCountIncrRate.java b/hotspot/test/compiler/rtm/locking/TestRTMTotalCountIncrRate.java
index 7a3327606fd..d27a87d8c2e 100644
--- a/hotspot/test/compiler/rtm/locking/TestRTMTotalCountIncrRate.java
+++ b/hotspot/test/compiler/rtm/locking/TestRTMTotalCountIncrRate.java
@@ -35,6 +35,7 @@
  *                   -XX:+WhiteBoxAPI TestRTMTotalCountIncrRate
  */
 
+import sun.misc.Unsafe;
 import java.util.List;
 
 import com.oracle.java.testlibrary.*;
@@ -97,14 +98,12 @@ public class TestRTMTotalCountIncrRate extends CommandLineOptionTest {
             Asserts.assertEQ(lock.getTotalLocks(), Test.TOTAL_ITERATIONS,
                     "Total locks should be exactly the same as amount of "
                     + "iterations.");
-        } else {
-            Asserts.assertGT(lock.getTotalLocks(), 0L, "RTM statistics "
-                    + "should contain information for at least on lock.");
         }
     }
 
     public static class Test implements CompilableTest {
         private static final long TOTAL_ITERATIONS = 10000L;
+        private static final Unsafe UNSAFE = Utils.getUnsafe();
         private final Object monitor = new Object();
         // Following field have to be static in order to avoid escape analysis.
         @SuppressWarnings("UnsuedDeclaration")
@@ -120,8 +119,17 @@ public class TestRTMTotalCountIncrRate extends CommandLineOptionTest {
             return new String[] { getMethodWithLockName() };
         }
 
-        public void lock() {
+        public void lock(booleab forceAbort) {
             synchronized(monitor) {
+                if (forceAbort) {
+                    // We're calling native method in order to force
+                    // abort. It's done by explicit xabort call emitted
+                    // in SharedRuntime::generate_native_wrapper.
+                    // If an actuall JNI call will be replaced by
+                    // intrinsic - we'll be in trouble, since xabort
+                    // will be no longer called and test may fail.
+                    UNSAFE.addressSize();
+                }
                 Test.field++;
             }
         }
@@ -140,7 +148,11 @@ public class TestRTMTotalCountIncrRate extends CommandLineOptionTest {
             for (long i = 0L; i < Test.TOTAL_ITERATIONS; i++) {
                 AbortProvoker.verifyMonitorState(test.monitor,
                         shouldBeInflated);
-                test.lock();
+                // Force abort on first iteration to avoid rare case when
+                // there were no aborts and locks count was not incremented
+                // with RTMTotalCountIncrRate > 1 (in such case JVM won't
+                // print JVM locking statistics).
+                test.lock(i == 0);
             }
         }
     }
diff --git a/hotspot/test/compiler/rtm/print/TestPrintPreciseRTMLockingStatistics.java b/hotspot/test/compiler/rtm/print/TestPrintPreciseRTMLockingStatistics.java
index 80b412272b0..291d4cabef5 100644
--- a/hotspot/test/compiler/rtm/print/TestPrintPreciseRTMLockingStatistics.java
+++ b/hotspot/test/compiler/rtm/print/TestPrintPreciseRTMLockingStatistics.java
@@ -125,9 +125,6 @@ public class TestPrintPreciseRTMLockingStatistics
 
         RTMLockingStatistics lock = statistics.get(0);
 
-        Asserts.assertGT(lock.getTotalLocks(), 0L, "RTM locking statistics "
-                + "should contain non zero total locks count");
-
         Asserts.assertGT(lock.getTotalAborts(), 0L,
                 "RTM locking statistics should contain non zero total aborts "
                 + "count");
diff --git a/hotspot/test/compiler/runtime/6865265/StackOverflowBug.java b/hotspot/test/compiler/runtime/6865265/StackOverflowBug.java
index 295a6b41777..b8fe082fd94 100644
--- a/hotspot/test/compiler/runtime/6865265/StackOverflowBug.java
+++ b/hotspot/test/compiler/runtime/6865265/StackOverflowBug.java
@@ -28,7 +28,7 @@
  * @summary JVM crashes with "missing exception handler" error
  * @author volker.simonis@sap.com
  *
- * @run main/othervm -XX:CompileThreshold=100 -Xbatch -Xss248k StackOverflowBug
+ * @run main/othervm -XX:CompileThreshold=100 -Xbatch -Xss392k StackOverflowBug
  */
 
 
diff --git a/hotspot/test/compiler/testlibrary/uncommontrap/Verifier.java b/hotspot/test/compiler/testlibrary/uncommontrap/Verifier.java
new file mode 100644
index 00000000000..5ec38bf254a
--- /dev/null
+++ b/hotspot/test/compiler/testlibrary/uncommontrap/Verifier.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package uncommontrap;
+
+import java.io.FileReader;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Properties;
+import java.util.regex.Pattern;
+
+import com.oracle.java.testlibrary.Asserts;
+/**
+ * Utility tool aimed to verify presence or absence of specified uncommon trap
+ * in compilation log.
+ */
+public class Verifier {
+    public static final String PROPERTIES_FILE_SUFFIX = ".verify.properties";
+    public static final String VERIFICATION_SHOULD_BE_SKIPPED
+            = "uncommon.trap.verification.skipped";
+    public static final String UNCOMMON_TRAP_NAME = "uncommon.trap.name";
+    public static final String UNCOMMON_TRAP_BCI = "uncommon.trap.bci";
+    public static final String UNCOMMON_TRAP_COMMENT = "uncommon.trap.comment";
+    public static final String UNCOMMON_TRAP_ACTION = "uncommon.trap.action";
+    public static final String UNCOMMON_TRAP_SHOULD_EMITTED
+            = "uncommon.trap.emitted";
+    public static final String UNCOMMON_TRAP_SHOULD_FIRED
+            = "uncommon.trap.fired";
+
+    private static final String EMITTED_TRAP_PATTERN
+            = "<uncommon_trap bci='%s' reason='%s' action='%s' "
+                    + "comment='%s'";
+    private static final String FIRED_TRAP_PATTERN
+            = "<uncommon_trap thread='[0-9]*' reason='%s' action='%s'";
+    private static final String JVMS_PATTERN = "<jvms bci='%s'";
+
+    public static void main(String args[]) {
+        if (args.length == 0) {
+            throw new Error("At least one argument containing name of "
+                    + "compilation log file is expected");
+        }
+
+        for (String compLogFile : args) {
+            try {
+                verify(Paths.get(compLogFile));
+            } catch (IOException e) {
+                throw new Error("Unable to process compilation log.", e);
+            }
+        }
+    }
+
+    private static void verify(Path compLogFile) throws IOException {
+        Path propertiesFile = Paths.get(compLogFile.toString() +
+                PROPERTIES_FILE_SUFFIX);
+
+        Properties properties = new Properties();
+        properties.load(new FileReader(propertiesFile.toFile()));
+
+        if (Boolean.valueOf(properties.getProperty(
+                VERIFICATION_SHOULD_BE_SKIPPED, "false"))) {
+            System.out.println("Skipping verification for log file: "
+                    + compLogFile.toString());
+            return;
+        }
+
+        System.out.println("Verifying log file: " + compLogFile.toString());
+
+        List<String> compLogContent = Files.readAllLines(compLogFile);
+        verifyUncommonTrapEmitted(properties, compLogContent);
+        verifyUncommonTrapFired(properties, compLogContent);
+    }
+
+    private static void verifyUncommonTrapEmitted(Properties properties,
+            List<String> compLogContent)  {
+        String emittedTrapRE = String.format(EMITTED_TRAP_PATTERN,
+                properties.getProperty(UNCOMMON_TRAP_BCI, ".*"),
+                properties.getProperty(UNCOMMON_TRAP_NAME, ".*"),
+                properties.getProperty(UNCOMMON_TRAP_ACTION, ".*"),
+                properties.getProperty(UNCOMMON_TRAP_COMMENT, ".*"));
+        Pattern pattern = Pattern.compile(emittedTrapRE);
+
+        long trapsCount = compLogContent.stream()
+                .filter(line -> pattern.matcher(line).find())
+                .count();
+
+        boolean shouldBeEmitted = Boolean.valueOf(
+                properties.getProperty(UNCOMMON_TRAP_SHOULD_EMITTED));
+
+        Asserts.assertEQ(shouldBeEmitted, trapsCount > 0, String.format(
+                "Uncommon trap that matches following string in compilation log"
+                        + " should %sbe emitted: %s.",
+                (shouldBeEmitted ? " " : "not "), emittedTrapRE));
+    }
+
+    private static void verifyUncommonTrapFired(Properties properties,
+            List<String> compLogContent) {
+        String firedTrapRE = String.format(FIRED_TRAP_PATTERN,
+                properties.getProperty(UNCOMMON_TRAP_NAME, ".*"),
+                properties.getProperty(UNCOMMON_TRAP_ACTION, ".*"));
+        String jvmsRE = String.format(JVMS_PATTERN,
+                properties.getProperty(UNCOMMON_TRAP_BCI, ".*"));
+
+        boolean trapFired = false;
+        Pattern firedTrapPattern = Pattern.compile(firedTrapRE);
+        Pattern jvmsPattern = Pattern.compile(jvmsRE);
+
+        Iterator<String> iterator = compLogContent.iterator();
+        while (iterator.hasNext() && !trapFired) {
+            trapFired = firedTrapPattern.matcher(iterator.next()).find()
+                    && jvmsPattern.matcher(iterator.next()).find();
+        }
+
+        boolean shouldBeFired = Boolean.valueOf(
+                properties.getProperty(UNCOMMON_TRAP_SHOULD_FIRED));
+        Asserts.assertEQ(shouldBeFired, trapFired, String.format(
+                "Uncommon trap that matches following string in compilation log"
+                        + " should %sbe fired: %s.",
+                (shouldBeFired ? "" : "not "), firedTrapRE));
+    }
+}
+
diff --git a/hotspot/test/compiler/uncommontrap/8009761/Test8009761.java b/hotspot/test/compiler/uncommontrap/8009761/Test8009761.java
index aff4947ee74..63db9ba2d4e 100644
--- a/hotspot/test/compiler/uncommontrap/8009761/Test8009761.java
+++ b/hotspot/test/compiler/uncommontrap/8009761/Test8009761.java
@@ -32,7 +32,7 @@ import java.lang.reflect.Method;
  * @build Test8009761
  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
- * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=exclude,Test8009761::m2 -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -Xss256K Test8009761
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=exclude,Test8009761::m2 -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -Xss392K Test8009761
  */
 public class Test8009761 {
 
diff --git a/hotspot/test/compiler/uncommontrap/StackOverflowGuardPagesOff.java b/hotspot/test/compiler/uncommontrap/StackOverflowGuardPagesOff.java
index 4ad409bb1eb..ba3b8795537 100644
--- a/hotspot/test/compiler/uncommontrap/StackOverflowGuardPagesOff.java
+++ b/hotspot/test/compiler/uncommontrap/StackOverflowGuardPagesOff.java
@@ -25,7 +25,7 @@
  * @test
  * @bug 8029383
  * @summary stack overflow if callee is marked for deoptimization causes crash
- * @run main/othervm -XX:TieredStopAtLevel=1 -XX:-BackgroundCompilation -XX:CompileCommand=dontinline,StackOverflowGuardPagesOff::m1 -XX:CompileCommand=exclude,StackOverflowGuardPagesOff::m2 -Xss256K -XX:-UseOnStackReplacement StackOverflowGuardPagesOff
+ * @run main/othervm -XX:TieredStopAtLevel=1 -XX:-BackgroundCompilation -XX:CompileCommand=dontinline,StackOverflowGuardPagesOff::m1 -XX:CompileCommand=exclude,StackOverflowGuardPagesOff::m2 -Xss392K -XX:-UseOnStackReplacement StackOverflowGuardPagesOff
  *
  */
 
diff --git a/hotspot/test/compiler/uncommontrap/TestStackBangMonitorOwned.java b/hotspot/test/compiler/uncommontrap/TestStackBangMonitorOwned.java
index 3d93d7d5a5e..83345642f74 100644
--- a/hotspot/test/compiler/uncommontrap/TestStackBangMonitorOwned.java
+++ b/hotspot/test/compiler/uncommontrap/TestStackBangMonitorOwned.java
@@ -25,7 +25,7 @@
  * @test
  * @bug 8032410
  * @summary Stack overflow at deoptimization doesn't release owned monitors
- * @run main/othervm -XX:-BackgroundCompilation -XX:CompileCommand=dontinline,TestStackBangMonitorOwned::m1 -XX:CompileCommand=exclude,TestStackBangMonitorOwned::m2 -Xss256K -XX:-UseOnStackReplacement TestStackBangMonitorOwned
+ * @run main/othervm -XX:-BackgroundCompilation -XX:CompileCommand=dontinline,TestStackBangMonitorOwned::m1 -XX:CompileCommand=exclude,TestStackBangMonitorOwned::m2 -Xss392K -XX:-UseOnStackReplacement TestStackBangMonitorOwned
  *
  */
 public class TestStackBangMonitorOwned {
diff --git a/hotspot/test/compiler/uncommontrap/TestStackBangRbp.java b/hotspot/test/compiler/uncommontrap/TestStackBangRbp.java
index 38d4e206e01..f242e6edd6b 100644
--- a/hotspot/test/compiler/uncommontrap/TestStackBangRbp.java
+++ b/hotspot/test/compiler/uncommontrap/TestStackBangRbp.java
@@ -25,7 +25,7 @@
  * @test
  * @bug 8028308
  * @summary rbp not restored when stack overflow is thrown from deopt/uncommon trap blobs
- * @run main/othervm -XX:-BackgroundCompilation -XX:CompileCommand=dontinline,TestStackBangRbp::m1 -XX:CompileCommand=exclude,TestStackBangRbp::m2 -Xss256K -XX:-UseOnStackReplacement TestStackBangRbp
+ * @run main/othervm -XX:-BackgroundCompilation -XX:CompileCommand=dontinline,TestStackBangRbp::m1 -XX:CompileCommand=exclude,TestStackBangRbp::m2 -Xss392K -XX:-UseOnStackReplacement TestStackBangRbp
  *
  */
 public class TestStackBangRbp {
diff --git a/hotspot/test/compiler/uncommontrap/TestUnstableIfTrap.java b/hotspot/test/compiler/uncommontrap/TestUnstableIfTrap.java
new file mode 100644
index 00000000000..87aaf66d247
--- /dev/null
+++ b/hotspot/test/compiler/uncommontrap/TestUnstableIfTrap.java
@@ -0,0 +1,257 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.lang.reflect.Method;
+import java.util.Properties;
+
+import com.oracle.java.testlibrary.ByteCodeLoader;
+import com.oracle.java.testlibrary.Platform;
+import jdk.internal.org.objectweb.asm.ClassVisitor;
+import jdk.internal.org.objectweb.asm.ClassWriter;
+import jdk.internal.org.objectweb.asm.Label;
+import jdk.internal.org.objectweb.asm.MethodVisitor;
+import static jdk.internal.org.objectweb.asm.Opcodes.*;
+
+import sun.hotspot.WhiteBox;
+import uncommontrap.Verifier;
+
+/*
+ * @test
+ * @bug 8030976 8059226
+ * @library /testlibrary /compiler/testlibrary /../../test/lib
+ * @build TestUnstableIfTrap com.oracle.java.testlibrary.* uncommontrap.Verifier
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ *                              sun.hotspot.WhiteBox$WhiteBoxPermission
+ * @run main/othervm -Xbatch -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:+WhiteBoxAPI -XX:+LogCompilation
+ *                   -XX:CompileCommand=compileonly,UnstableIfExecutable.test
+ *                   -XX:LogFile=always_taken_not_fired.xml
+ *                   TestUnstableIfTrap ALWAYS_TAKEN false
+ * @run main/othervm -Xbatch -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:+WhiteBoxAPI -XX:+LogCompilation
+ *                   -XX:CompileCommand=compileonly,UnstableIfExecutable.test
+ *                   -XX:LogFile=always_taken_fired.xml
+ *                   TestUnstableIfTrap ALWAYS_TAKEN true
+ * @run main/othervm -Xbatch -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:+WhiteBoxAPI -XX:+LogCompilation
+ *                   -XX:CompileCommand=compileonly,UnstableIfExecutable.test
+ *                   -XX:LogFile=never_taken_not_fired.xml
+ *                   TestUnstableIfTrap NEVER_TAKEN false
+ * @run main/othervm -Xbatch -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:+WhiteBoxAPI -XX:+LogCompilation
+ *                   -XX:CompileCommand=compileonly,UnstableIfExecutable.test
+ *                   -XX:LogFile=never_taken_fired.xml
+ *                   TestUnstableIfTrap NEVER_TAKEN true
+ * @run main uncommontrap.Verifier always_taken_not_fired.xml
+ *                                 always_taken_fired.xml
+ *                                 never_taken_not_fired.xml
+ *                                 never_taken_fired.xml
+ */
+public class TestUnstableIfTrap {
+    private static final WhiteBox WB = WhiteBox.getWhiteBox();
+    private static final String CLASS_NAME = "UnstableIfExecutable";
+    private static final String METHOD_NAME = "test";
+    private static final String FIELD_NAME = "field";
+    private static final int ITERATIONS = 1_000_000;
+    // There is no dependency on particular class file version, so it could be
+    // set to any version (if you're updating this test for Java 42).
+    private static final int CLASS_FILE_VERSION = 49;
+    private static final int MAX_TIER = 4;
+    // This test aimed to verify that uncommon trap with reason "unstable_if"
+    // is emitted when method that contain control-flow divergence such that
+    // one of two branches is never taken (and other one is taken always).
+    // C2 will made a decision whether or not the branch was ever taken
+    // depending on method's profile.
+    // If profile was collected for a few method's invocations, then C2 will not
+    // trust in branches' probabilities and the tested trap won't be emitted.
+    // In fact, a method has to be invoked at least 40 time at the day when this
+    // comment was written (see Parse::dynamic_branch_prediction for an actual
+    // value). It would be to implementation dependent to use "40" as
+    // a threshold value in the test, so in order to improve test's robustness
+    // the threshold value is 1000: if the tested method was compiled by C2
+    // before it was invoked 1000 times, then we won't verify that trap was
+    // emitted and fired.
+    private static final int MIN_INVOCATIONS_BEFORE_C2_COMPILATION = 1000;
+    /**
+     * Description of test case parameters and uncommon trap that will
+     * be emitted during tested method compilation.
+     */
+    private static enum TestCaseName {
+        ALWAYS_TAKEN(false, "taken always"),
+        NEVER_TAKEN(true, "taken never");
+        TestCaseName(boolean predicate, String comment) {
+            this.predicate = predicate;
+            this.comment = comment;
+        }
+
+        public final boolean predicate;
+        public final String name = "unstable_if";
+        public final String comment;
+    }
+
+    public static void main(String args[]) {
+        if (args.length != 2) {
+            throw new Error("Expected two arguments: test case name and a "
+                    + "boolean determining if uncommon trap should be fired.");
+        }
+        test(TestCaseName.valueOf(args[0]), Boolean.valueOf(args[1]));
+    }
+
+    private static void test(TestCaseName testCase, boolean shouldBeFired) {
+        Method testMethod;
+        Label unstableIfLocation = new Label();
+        boolean shouldBeEmitted;
+        boolean compiledToEarly = false;
+
+        try {
+            Class testClass = ByteCodeLoader.load(CLASS_NAME,
+                    generateTest(unstableIfLocation));
+            testMethod = testClass.getDeclaredMethod(METHOD_NAME,
+                    boolean.class);
+            for (int i = 0; i < ITERATIONS; i++) {
+                testMethod.invoke(null, testCase.predicate);
+                if (i < MIN_INVOCATIONS_BEFORE_C2_COMPILATION
+                        && isMethodCompiledByC2(testMethod)) {
+                    compiledToEarly = true;
+                    // There is no sense in further invocations: we already
+                    // decided to avoid verification.
+                    break;
+                }
+            }
+            // We're checking that trap should be emitted (i.e. it was compiled
+            // by C2) before the trap is fired, because otherwise the nmethod
+            // will be deoptimized and isMethodCompiledByC2 will return false.
+            shouldBeEmitted = isMethodCompiledByC2(testMethod)
+                    && !compiledToEarly;
+            if (shouldBeFired) {
+                testMethod.invoke(null, !testCase.predicate);
+            }
+        } catch (ReflectiveOperationException e) {
+            throw new Error("Test case should be generated, loaded and executed"
+                    + " without any issues.", e);
+        }
+
+        shouldBeFired &= shouldBeEmitted;
+
+        Properties properties = new Properties();
+        properties.setProperty(Verifier.VERIFICATION_SHOULD_BE_SKIPPED,
+                Boolean.toString(compiledToEarly));
+        properties.setProperty(Verifier.UNCOMMON_TRAP_SHOULD_EMITTED,
+                Boolean.toString(shouldBeEmitted));
+        properties.setProperty(Verifier.UNCOMMON_TRAP_SHOULD_FIRED,
+                Boolean.toString(shouldBeFired));
+        properties.setProperty(Verifier.UNCOMMON_TRAP_NAME, testCase.name);
+        properties.setProperty(Verifier.UNCOMMON_TRAP_COMMENT,
+                testCase.comment);
+        properties.setProperty(Verifier.UNCOMMON_TRAP_BCI,
+                Integer.toString(unstableIfLocation.getOffset()));
+
+        properties.list(System.out);
+
+        File f = new File(WB.getStringVMFlag("LogFile") +
+                Verifier.PROPERTIES_FILE_SUFFIX);
+        try (FileWriter wr = new FileWriter(f)) {
+            properties.store(wr, "");
+        } catch (IOException e) {
+            throw new Error("Unable to store test properties.", e);
+        }
+    }
+
+    private static boolean isMethodCompiledByC2(Method m) {
+        boolean isTiered = WB.getBooleanVMFlag("TieredCompilation");
+        boolean isMethodCompiled = WB.isMethodCompiled(m);
+        boolean isMethodCompiledAtMaxTier
+                = WB.getMethodCompilationLevel(m) == MAX_TIER;
+
+        return Platform.isServer() && isMethodCompiled
+                && (!isTiered || isMethodCompiledAtMaxTier);
+    }
+
+    /**
+     * Generates class with name {@code CLASS_NAME}, which will contain a
+     * static method {@code METHOD_NAME}:
+     *
+     * <pre>{@code
+     * public abstract class UnstableIfExecutable {
+     *   private static int field = 0;
+     *
+     *   public static void test(boolean alwaysTrue) {
+     *     if (alwaysTrue) {
+     *       field++;
+     *     } else {
+     *       field--;
+     *     }
+     *   }
+     * }
+     * }</pre>
+     *
+     * @return generated bytecode.
+     */
+    private static byte[] generateTest(Label unstableIfLocation) {
+        ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
+
+        cw.visit(CLASS_FILE_VERSION, ACC_PUBLIC | ACC_ABSTRACT, CLASS_NAME,
+                null, "java/lang/Object", null);
+
+        cw.visitField(ACC_PUBLIC | ACC_STATIC | ACC_VOLATILE, FIELD_NAME,
+                "I", null, Integer.valueOf(0));
+
+        generateTestMethod(cw, unstableIfLocation);
+
+        return cw.toByteArray();
+    }
+
+    private static void generateTestMethod(ClassVisitor cv,
+            Label unstableIfLocation) {
+        MethodVisitor mv = cv.visitMethod(ACC_PUBLIC | ACC_STATIC, METHOD_NAME,
+                "(Z)V", null, null);
+        mv.visitCode();
+
+        Label end = new Label();
+        Label falseBranch = new Label();
+
+        // push "field" field's value and 1 to stack
+        mv.visitFieldInsn(GETSTATIC, CLASS_NAME, FIELD_NAME, "I");
+        mv.visitInsn(ICONST_1);
+        // load argument's value
+        mv.visitVarInsn(ILOAD, 0); // alwaysTrue
+        // here is our unstable if
+        mv.visitLabel(unstableIfLocation);
+        mv.visitJumpInsn(IFEQ, falseBranch);
+        // increment on "true"
+        mv.visitInsn(IADD);
+        mv.visitJumpInsn(GOTO, end);
+        // decrement on "false"
+        mv.visitLabel(falseBranch);
+        mv.visitInsn(ISUB);
+        mv.visitLabel(end);
+        // bye bye
+        mv.visitInsn(RETURN);
+
+        mv.visitMaxs(0, 0);
+        mv.visitEnd();
+    }
+}
+
diff --git a/hotspot/test/compiler/whitebox/ForceNMethodSweepTest.java b/hotspot/test/compiler/whitebox/ForceNMethodSweepTest.java
index 5038e7cfa8f..c08067ec4be 100644
--- a/hotspot/test/compiler/whitebox/ForceNMethodSweepTest.java
+++ b/hotspot/test/compiler/whitebox/ForceNMethodSweepTest.java
@@ -34,6 +34,7 @@ import com.oracle.java.testlibrary.InfiniteLoop;
 /*
  * @test
  * @bug 8059624 8064669
+ * @ignore 8066998
  * @library /testlibrary /../../test/lib
  * @build ForceNMethodSweepTest
  * @run main ClassFileInstaller sun.hotspot.WhiteBox
diff --git a/hotspot/test/gc/TestSmallHeap.java b/hotspot/test/gc/TestSmallHeap.java
index 321e33bf3b6..170b5397740 100644
--- a/hotspot/test/gc/TestSmallHeap.java
+++ b/hotspot/test/gc/TestSmallHeap.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -26,34 +26,46 @@
  * @bug 8067438
  * @requires vm.gc=="null"
  * @summary Verify that starting the VM with a small heap works
- * @library /testlibrary
- * @run main/othervm -Xmx4m -XX:+UseParallelGC TestSmallHeap
- * @run main/othervm -Xmx4m -XX:+UseSerialGC TestSmallHeap
- * @run main/othervm -Xmx4m -XX:+UseG1GC TestSmallHeap
- * @run main/othervm -Xmx4m -XX:+UseConcMarkSweepGC -XX:CMSMarkStackSizeMax=1032 TestSmallHeap
+ * @library /testlibrary /../../test/lib
+ * @build TestSmallHeap
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xmx2m -XX:+UseParallelGC TestSmallHeap
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xmx2m -XX:+UseSerialGC TestSmallHeap
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xmx2m -XX:+UseG1GC TestSmallHeap
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xmx2m -XX:+UseConcMarkSweepGC TestSmallHeap
+ *
+ * Note: It would be nice to verify the minimal supported heap size (2m) here,
+ * but we align the heap size based on the card table size. And the card table
+ * size is aligned based on the minimal pages size provided by the os. This
+ * means that on most platforms, where the minimal page size is 4k, we get a
+ * minimal heap size of 2m but on Solaris/Sparc we have a page size of 8k and
+ * get a minimal heap size of 4m. And on platforms where the page size is 64k
+ * we get a minimal heap size of 32m. We never use large pages for the card table.
  *
- * Note: It would be nice to verify the minimal supported heap size here,
- * but that turns out to be quite tricky since we align the heap size based
- * on the card table size. And the card table size is aligned based on the
- * minimal pages size provided by the os. This means that on most platforms,
- * where the minimal page size is 4k, we get a minimal heap size of 2m but
- * on Solaris/Sparc we have a page size of 8k and get a minimal heap size
- * of 8m.
  * There is also no check in the VM for verifying that the maximum heap size
  * is larger than the supported minimal heap size. This means that specifying
- * -Xmx1m on the command line is fine but will give a heap of 2m (or 4m).
- * To work around these rather strange behaviors this test uses 4m for all
- * platforms.
+ * -Xmx1m on the command line is fine but will give a heap of 2m (or 4m or 32m).
+ *
+ * To work around these rather strange behaviors this test uses -Xmx2m but then
+ * calculates what the expected heap size should be. The calculation is a
+ * simplified version of the code in the VM. We assume that the card table will
+ * use one page. Each byte in the card table corresponds to 512 bytes on the heap.
+ * So, the expected heap size is page_size * 512.
  */
 
-import sun.management.ManagementFactoryHelper;
+import com.oracle.java.testlibrary.*;
 import static com.oracle.java.testlibrary.Asserts.*;
+import sun.hotspot.WhiteBox;
+import sun.management.ManagementFactoryHelper;
 
 public class TestSmallHeap {
 
     public static void main(String[] args) {
+        WhiteBox wb = WhiteBox.getWhiteBox();
+        int pageSize = wb.getVMPageSize();
+        int heapBytesPerCard = 512;
+        long expectedMaxHeap = pageSize * heapBytesPerCard;
         String maxHeap = ManagementFactoryHelper.getDiagnosticMXBean().getVMOption("MaxHeapSize").getValue();
-        String expectedMaxHeap = "4194304";
-        assertEQ(maxHeap, expectedMaxHeap);
+        assertEQ(Long.parseLong(maxHeap), expectedMaxHeap);
     }
 }
diff --git a/hotspot/test/gc/arguments/TestMaxHeapSizeTools.java b/hotspot/test/gc/arguments/TestMaxHeapSizeTools.java
index b5859b5cf49..99ed508d677 100644
--- a/hotspot/test/gc/arguments/TestMaxHeapSizeTools.java
+++ b/hotspot/test/gc/arguments/TestMaxHeapSizeTools.java
@@ -112,7 +112,7 @@ class TestMaxHeapSizeTools {
   }
 
   private static void checkInvalidMinInitialHeapCombinations(String gcflag) throws Exception {
-    expectError(new String[] { gcflag, "-Xms8M", "-XX:InitialHeapSize=4M", "-version" });
+    expectError(new String[] { gcflag, "-Xms64M", "-XX:InitialHeapSize=32M", "-version" });
   }
 
   private static void checkValidMinInitialHeapCombinations(String gcflag) throws Exception {
diff --git a/hotspot/test/gc/g1/TestGCLogMessages.java b/hotspot/test/gc/g1/TestGCLogMessages.java
index 5e19d4f2d14..938d17bfec4 100644
--- a/hotspot/test/gc/g1/TestGCLogMessages.java
+++ b/hotspot/test/gc/g1/TestGCLogMessages.java
@@ -107,8 +107,8 @@ public class TestGCLogMessages {
 
   private static void testWithToSpaceExhaustionLogs() throws Exception {
     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
-                                               "-Xmx10M",
-                                               "-Xmn5M",
+                                               "-Xmx32M",
+                                               "-Xmn16M",
                                                "-XX:+PrintGCDetails",
                                                GCTestWithToSpaceExhaustion.class.getName());
 
@@ -120,8 +120,8 @@ public class TestGCLogMessages {
     output.shouldHaveExitValue(0);
 
     pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
-                                               "-Xmx10M",
-                                               "-Xmn5M",
+                                               "-Xmx32M",
+                                               "-Xmn16M",
                                                "-XX:+PrintGCDetails",
                                                "-XX:+UnlockExperimentalVMOptions",
                                                "-XX:G1LogLevel=finest",
@@ -151,7 +151,7 @@ public class TestGCLogMessages {
     private static byte[] garbage;
     private static byte[] largeObject;
     public static void main(String [] args) {
-      largeObject = new byte[5*1024*1024];
+      largeObject = new byte[16*1024*1024];
       System.out.println("Creating garbage");
       // create 128MB of garbage. This should result in at least one GC,
       // some of them with to-space exhaustion.
diff --git a/hotspot/test/gc/g1/TestHumongousAllocInitialMark.java b/hotspot/test/gc/g1/TestHumongousAllocInitialMark.java
index 473ce666e9e..b6e5c3d66d3 100644
--- a/hotspot/test/gc/g1/TestHumongousAllocInitialMark.java
+++ b/hotspot/test/gc/g1/TestHumongousAllocInitialMark.java
@@ -31,7 +31,9 @@
 import com.oracle.java.testlibrary.*;
 
 public class TestHumongousAllocInitialMark {
-    private static final int heapSize                       = 200; // MB
+    // Heap sizes < 224 MB are increased to 224 MB if vm_page_size == 64K to
+    // fulfill alignment constraints.
+    private static final int heapSize                       = 224; // MB
     private static final int heapRegionSize                 = 1;   // MB
     private static final int initiatingHeapOccupancyPercent = 50;  // %
 
diff --git a/hotspot/test/runtime/6888954/vmerrors.sh b/hotspot/test/runtime/6888954/vmerrors.sh
index 28f6eea0fec..98540c4d235 100644
--- a/hotspot/test/runtime/6888954/vmerrors.sh
+++ b/hotspot/test/runtime/6888954/vmerrors.sh
@@ -1,4 +1,4 @@
-# Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -71,11 +71,12 @@ bad_data_ptr_re='(SIGILL|SIGSEGV|EXCEPTION_ACCESS_VIOLATION).* at pc='
 # EXCEPTION_ACCESS_VIOLATION - Win-*
 # SIGBUS - Solaris SPARC-64
 # SIGSEGV - Linux-*, Solaris SPARC-32, Solaris X86-*
+# SIGILL - Aix
 #
 # Note: would like to use "pc=0x00*0f," in the pattern, but Solaris SPARC-*
 # gets its signal at a PC in test_error_handler().
 #
-bad_func_ptr_re='(SIGBUS|SIGSEGV|EXCEPTION_ACCESS_VIOLATION).* at pc='
+bad_func_ptr_re='(SIGBUS|SIGSEGV|SIGILL|EXCEPTION_ACCESS_VIOLATION).* at pc='
 guarantee_re='guarantee[(](str|num).*failed: *'
 fatal_re='fatal error: *'
 tail_1='.*expected null'
diff --git a/hotspot/test/runtime/CommandLine/CompilerConfigFileWarning.java b/hotspot/test/runtime/CommandLine/CompilerConfigFileWarning.java
index aa5b4746139..c546272641a 100644
--- a/hotspot/test/runtime/CommandLine/CompilerConfigFileWarning.java
+++ b/hotspot/test/runtime/CommandLine/CompilerConfigFileWarning.java
@@ -43,7 +43,7 @@ public class CompilerConfigFileWarning {
 
         pb = ProcessTools.createJavaProcessBuilder("-XX:CompileCommandFile=hs_comp.txt", "-version");
         output = new OutputAnalyzer(pb.start());
-        output.shouldContain("CompilerOracle: unrecognized line");
+        output.shouldContain("CompileCommand: unrecognized command");
         output.shouldContain("aaa  aaa");
 
         // Skip on debug builds since we'll always read the file there
diff --git a/hotspot/test/runtime/NMT/ChangeTrackingLevel.java b/hotspot/test/runtime/NMT/ChangeTrackingLevel.java
index 2794b05a833..d0df079cb66 100644
--- a/hotspot/test/runtime/NMT/ChangeTrackingLevel.java
+++ b/hotspot/test/runtime/NMT/ChangeTrackingLevel.java
@@ -27,6 +27,7 @@
  * @summary Test that you can decrease NMT tracking level but not increase it.
  * @key nmt
  * @library /testlibrary /../../test/lib
+ * @ignore 8067167
  * @build ChangeTrackingLevel
  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
diff --git a/hotspot/test/runtime/NMT/PrintNMTStatistics.java b/hotspot/test/runtime/NMT/PrintNMTStatistics.java
index 4b77303e026..ba46c20ec6f 100644
--- a/hotspot/test/runtime/NMT/PrintNMTStatistics.java
+++ b/hotspot/test/runtime/NMT/PrintNMTStatistics.java
@@ -27,6 +27,7 @@
  * @bug 8005936 8058606
  * @summary Verify PrintNMTStatistics on normal JVM exit for detail and summary tracking level
  * @library /testlibrary
+ * @ignore 8067167
  */
 
 import com.oracle.java.testlibrary.*;
diff --git a/hotspot/test/runtime/SharedArchiveFile/MaxMetaspaceSize.java b/hotspot/test/runtime/SharedArchiveFile/MaxMetaspaceSize.java
new file mode 100644
index 00000000000..9d8c4984377
--- /dev/null
+++ b/hotspot/test/runtime/SharedArchiveFile/MaxMetaspaceSize.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8067187
+ * @summary Testing CDS dumping with the -XX:MaxMetaspaceSize=<size> option
+ * @library /testlibrary
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class MaxMetaspaceSize {
+  public static void main(String[] args) throws Exception {
+    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+        "-XX:MaxMetaspaceSize=20m", "-Xshare:dump");
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+      output.shouldContain("is not large enough.\nEither don't specify the -XX:MaxMetaspaceSize=<size>\nor increase the size to at least");
+      output.shouldHaveExitValue(2);
+  }
+}
diff --git a/hotspot/test/runtime/7194254/Test7194254.java b/hotspot/test/runtime/Thread/ThreadPriorities.java
similarity index 50%
rename from hotspot/test/runtime/7194254/Test7194254.java
rename to hotspot/test/runtime/Thread/ThreadPriorities.java
index 08f55e55b22..18a75c1d35e 100644
--- a/hotspot/test/runtime/7194254/Test7194254.java
+++ b/hotspot/test/runtime/Thread/ThreadPriorities.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2015 Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,23 +27,21 @@
  * @summary Creates several threads with different java priorities and checks
  *      whether jstack reports correct priorities for them.
  *
- * @ignore 8060219
- * @run main Test7194254
+ * @library /testlibrary
+ * @run main ThreadPriorities
  */
 
-import java.io.BufferedReader;
-import java.io.InputStreamReader;
-import java.lang.management.ManagementFactory;
-import java.lang.management.RuntimeMXBean;
 import java.util.ArrayList;
-import java.util.List;
 import java.util.concurrent.CyclicBarrier;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-public class Test7194254 {
+import com.oracle.java.testlibrary.*;
+import static com.oracle.java.testlibrary.Asserts.*;
 
-    public static void main(String[] args) throws Exception {
+public class ThreadPriorities {
+
+    public static void main(String[] args) throws Throwable {
         final int NUMBER_OF_JAVA_PRIORITIES =
                 Thread.MAX_PRIORITY - Thread.MIN_PRIORITY + 1;
         final CyclicBarrier barrier =
@@ -68,53 +66,31 @@ public class Test7194254 {
         barrier.await(); // 1st
 
         int matches = 0;
-        List<String> failed = new ArrayList<>();
-        try {
-            String pid = getPid();
-            String jstack = System.getProperty("java.home") + "/../bin/jstack";
-            Process process = new ProcessBuilder(jstack, pid)
-                    .redirectErrorStream(true).start();
-            Pattern pattern = Pattern.compile(
-                    "\\\"Priority=(\\d+)\\\".* prio=(\\d+).*");
-            try (BufferedReader reader = new BufferedReader(
-                    new InputStreamReader(process.getInputStream()))) {
-                String line;
-                while((line = reader.readLine()) != null) {
-                    Matcher matcher = pattern.matcher(line);
-                    if (matcher.matches()) {
-                        matches += 1;
-                        String expected = matcher.group(1);
-                        String actual = matcher.group(2);
-                        if (!expected.equals(actual)) {
-                            failed.add(line);
-                        }
-                    }
+        ArrayList<String> failed = new ArrayList<>();
+        ProcessBuilder pb = new ProcessBuilder(
+                JDKToolFinder.getJDKTool("jstack"),
+                String.valueOf(ProcessTools.getProcessId()));
+
+        String[] output = new OutputAnalyzer(pb.start()).getOutput().split("\\n+");
+
+        Pattern pattern = Pattern.compile(
+                "\\\"Priority=(\\d+)\\\".* prio=(\\d+).*");
+        for (String line : output) {
+            Matcher matcher = pattern.matcher(line);
+            if (matcher.matches()) {
+                matches += 1;
+                String expected = matcher.group(1);
+                String actual = matcher.group(2);
+                if (!expected.equals(actual)) {
+                    failed.add(line);
                 }
             }
-            barrier.await(); // 2nd
-        } finally {
-            barrier.reset();
         }
+        barrier.await(); // 2nd
+        barrier.reset();
 
-        if (matches != NUMBER_OF_JAVA_PRIORITIES) {
-            throw new AssertionError("matches: expected " +
-                    NUMBER_OF_JAVA_PRIORITIES + ", but was " + matches);
-        }
-        if (!failed.isEmpty()) {
-            throw new AssertionError(failed.size() + ":" + failed);
-        }
-        System.out.println("Test passes.");
+        assertEquals(matches, NUMBER_OF_JAVA_PRIORITIES);
+        assertTrue(failed.isEmpty(), failed.size() + ":" + failed);
     }
-
-    static String getPid() {
-        RuntimeMXBean runtimebean = ManagementFactory.getRuntimeMXBean();
-        String vmname = runtimebean.getName();
-        int i = vmname.indexOf('@');
-        if (i != -1) {
-            vmname = vmname.substring(0, i);
-        }
-        return vmname;
-    }
-
 }
 
diff --git a/hotspot/test/runtime/Unsafe/Reallocate.java b/hotspot/test/runtime/Unsafe/Reallocate.java
new file mode 100644
index 00000000000..19442038374
--- /dev/null
+++ b/hotspot/test/runtime/Unsafe/Reallocate.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8058897
+ * @library /testlibrary
+ * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:MallocMaxTestWords=100m Reallocate
+ */
+
+import com.oracle.java.testlibrary.*;
+import sun.misc.Unsafe;
+import static com.oracle.java.testlibrary.Asserts.*;
+
+public class Reallocate {
+    public static void main(String args[]) throws Exception {
+        Unsafe unsafe = Utils.getUnsafe();
+
+        long address = unsafe.allocateMemory(1);
+        assertNotEquals(address, 0L);
+
+        // Make sure we reallocate correctly
+        unsafe.putByte(address, Byte.MAX_VALUE);
+        address = unsafe.reallocateMemory(address, 2);
+        assertNotEquals(address, 0L);
+        assertEquals(unsafe.getByte(address), Byte.MAX_VALUE);
+
+        // Reallocating with a 0 size should return a null pointer
+        address = unsafe.reallocateMemory(address, 0);
+        assertEquals(address, 0L);
+
+        // Reallocating with a null pointer should result in a normal allocation
+        address = unsafe.reallocateMemory(0L, 1);
+        assertNotEquals(address, 0L);
+        unsafe.putByte(address, Byte.MAX_VALUE);
+        assertEquals(unsafe.getByte(address), Byte.MAX_VALUE);
+
+        // Make sure we can throw an OOME when we fail to reallocate due to OOM
+        try {
+            unsafe.reallocateMemory(address, 100 * 1024 * 1024 * 8);
+        } catch (OutOfMemoryError e) {
+            // Expected
+            return;
+        }
+        throw new RuntimeException("Did not get expected OOM");
+    }
+}
diff --git a/hotspot/test/runtime/whitebox/WBStackSize.java b/hotspot/test/runtime/whitebox/WBStackSize.java
index b3226974553..0941fb793df 100644
--- a/hotspot/test/runtime/whitebox/WBStackSize.java
+++ b/hotspot/test/runtime/whitebox/WBStackSize.java
@@ -47,7 +47,7 @@ public class WBStackSize {
     static final long K = 1024;
 
     static final long MIN_STACK_SIZE = 8 * K;
-    static final long MAX_STACK_SIZE_ALLOCATED_IN_MAIN = 200 * K; // current value is about 130k on 64-bit platforms
+    static final long MAX_STACK_SIZE_ALLOCATED_IN_MAIN = 150 * K; // current value is about 130k on 64-bit platforms
 
     static final WhiteBox wb = WhiteBox.getWhiteBox();
 
@@ -82,9 +82,11 @@ public class WBStackSize {
 
     public static void main(String[] args) {
         long configStackSize = wb.getIntxVMFlag("ThreadStackSize") * K;
-
         System.out.println("ThreadStackSize VM option: " + configStackSize);
 
+        long stackProtectionSize = wb.getIntxVMFlag("StackShadowPages") * wb.getVMPageSize();
+        System.out.println("Size of protected shadow pages: " + stackProtectionSize);
+
         long actualStackSize = wb.getThreadStackSize();
         System.out.println("Full stack size: " + actualStackSize);
 
@@ -96,14 +98,16 @@ public class WBStackSize {
         long remainingStackSize = wb.getThreadRemainingStackSize();
         System.out.println("Remaining stack size in main(): " + remainingStackSize);
 
-        // Up to 200k can be already allocated by VM
+        // Up to 150k can be already allocated by VM and some space is used for stack protection.
+        long spaceAlreadyOccupied = MAX_STACK_SIZE_ALLOCATED_IN_MAIN + stackProtectionSize;
+
         if (remainingStackSize > configStackSize
-                || (configStackSize > MAX_STACK_SIZE_ALLOCATED_IN_MAIN
-                && remainingStackSize < configStackSize - MAX_STACK_SIZE_ALLOCATED_IN_MAIN)) {
+            || (configStackSize > spaceAlreadyOccupied
+                && remainingStackSize < configStackSize - spaceAlreadyOccupied)) {
 
             throw new RuntimeException("getThreadRemainingStackSize value [" + remainingStackSize
                                      + "] should be at least ThreadStackSize value [" + configStackSize + "] minus ["
-                                     + MAX_STACK_SIZE_ALLOCATED_IN_MAIN + "]");
+                                     + spaceAlreadyOccupied + "]");
         }
 
         testStackOverflow();
diff --git a/hotspot/test/serviceability/dcmd/DynLibDcmdTest.java b/hotspot/test/serviceability/dcmd/DynLibDcmdTest.java
index 069b06f1937..2f6b08ddd94 100644
--- a/hotspot/test/serviceability/dcmd/DynLibDcmdTest.java
+++ b/hotspot/test/serviceability/dcmd/DynLibDcmdTest.java
@@ -3,7 +3,7 @@ import java.util.Set;
 import com.oracle.java.testlibrary.Platform;
 
 /*
- * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -39,14 +39,16 @@ public class DynLibDcmdTest {
         String result = DcmdUtil.executeDcmd("VM.dynlibs");
 
         String osDependentBaseString = null;
-        if (Platform.isSolaris()) {
+        if (Platform.isAix()) {
+            osDependentBaseString = "lib%s.so";
+        } else if (Platform.isLinux()) {
+            osDependentBaseString = "lib%s.so";
+        } else if (Platform.isOSX()) {
+            osDependentBaseString = "lib%s.dylib";
+        } else if (Platform.isSolaris()) {
             osDependentBaseString = "lib%s.so";
         } else if (Platform.isWindows()) {
             osDependentBaseString = "%s.dll";
-        } else if (Platform.isOSX()) {
-            osDependentBaseString = "lib%s.dylib";
-        } else if (Platform.isLinux()) {
-            osDependentBaseString = "lib%s.so";
         }
 
         if (osDependentBaseString == null) {
diff --git a/hotspot/test/test_env.sh b/hotspot/test/test_env.sh
index e9fc3abb0ff..7fcfb93c737 100644
--- a/hotspot/test/test_env.sh
+++ b/hotspot/test/test_env.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-#  Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
+#  Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
 #  DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 # 
 #  This code is free software; you can redistribute it and/or modify it
@@ -56,7 +56,7 @@ echo "TESTOPTS=${TESTOPTS}"
 # set platform-dependent variables
 OS=`uname -s`
 case "$OS" in
-  SunOS | Linux | Darwin )
+  AIX | Darwin | Linux | SunOS )
     NULL=/dev/null
     PS=":"
     FS="/"
@@ -133,26 +133,31 @@ then
 fi
 
 VM_OS="unknown"
-grep "solaris" vm_version.out > ${NULL}
+grep "aix" vm_version.out > ${NULL}
 if [ $? = 0 ]
 then
-  VM_OS="solaris"
+  VM_OS="aix"
+fi
+grep "bsd" vm_version.out > ${NULL}
+if [ $? = 0 ]
+then
+  VM_OS="bsd"
 fi
 grep "linux" vm_version.out > ${NULL}
 if [ $? = 0 ]
 then
   VM_OS="linux"
 fi
+grep "solaris" vm_version.out > ${NULL}
+if [ $? = 0 ]
+then
+  VM_OS="solaris"
+fi
 grep "windows" vm_version.out > ${NULL}
 if [ $? = 0 ]
 then
   VM_OS="windows"
 fi
-grep "bsd" vm_version.out > ${NULL}
-if [ $? = 0 ]
-then
-  VM_OS="bsd"
-fi
 
 VM_CPU="unknown"
 grep "sparc" vm_version.out > ${NULL}
diff --git a/hotspot/test/testlibrary/com/oracle/java/testlibrary/Platform.java b/hotspot/test/testlibrary/com/oracle/java/testlibrary/Platform.java
index 8bdb863ed46..d26702deffa 100644
--- a/hotspot/test/testlibrary/com/oracle/java/testlibrary/Platform.java
+++ b/hotspot/test/testlibrary/com/oracle/java/testlibrary/Platform.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -68,20 +68,24 @@ public class Platform {
         return dataModel.equals("64");
     }
 
-    public static boolean isSolaris() {
-        return isOs("sunos");
+    public static boolean isAix() {
+        return isOs("aix");
     }
 
-    public static boolean isWindows() {
-        return isOs("win");
+    public static boolean isLinux() {
+        return isOs("linux");
     }
 
     public static boolean isOSX() {
         return isOs("mac");
     }
 
-    public static boolean isLinux() {
-        return isOs("linux");
+    public static boolean isSolaris() {
+        return isOs("sunos");
+    }
+
+    public static boolean isWindows() {
+        return isOs("win");
     }
 
     private static boolean isOs(String osname) {
@@ -140,7 +144,9 @@ public class Platform {
      */
     public static boolean shouldSAAttach() throws Exception {
 
-        if (isLinux()) {
+        if (isAix()) {
+            return false;   // SA not implemented.
+        } else if (isLinux()) {
             return canPtraceAttachLinux();
         } else if (isOSX()) {
             return canAttachOSX();
diff --git a/hotspot/test/testlibrary_tests/TestMutuallyExclusivePlatformPredicates.java b/hotspot/test/testlibrary_tests/TestMutuallyExclusivePlatformPredicates.java
index b16d6eb7540..1f022a9d0f8 100644
--- a/hotspot/test/testlibrary_tests/TestMutuallyExclusivePlatformPredicates.java
+++ b/hotspot/test/testlibrary_tests/TestMutuallyExclusivePlatformPredicates.java
@@ -45,7 +45,7 @@ public class TestMutuallyExclusivePlatformPredicates {
     private static enum MethodGroup {
         ARCH("isARM", "isPPC", "isSparc", "isX86", "isX64"),
         BITNESS("is32bit", "is64bit"),
-        OS("isLinux", "isSolaris", "isWindows", "isOSX"),
+        OS("isAix", "isLinux", "isOSX", "isSolaris", "isWindows"),
         VM_TYPE("isClient", "isServer", "isGraal", "isMinimal"),
         IGNORED("isEmbedded", "isDebugBuild", "shouldSAAttach",
                 "canPtraceAttachLinux", "canAttachOSX", "isTieredSupported");