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104 Commits

Author SHA1 Message Date
Tobias Hartmann
4ab4c66c41 8159016: Over-unrolled loop is partially removed 
Prevent over-unrolling of loops by computing upper bound for trip count.

Reviewed-by: kvn
 2016-06-27 10:10:11 +02:00
Tobias Hartmann
6294f0770b 8159715: Fix for 8072422 is incorrect 
Fixed several issues introduced by 8072422.

Reviewed-by: zmajo, kvn
 2016-06-20 09:32:44 +02:00
Aleksey Shipilev
c6c73deca4 8157726: VarHandles/Unsafe should support sub-word atomic ops 
Reviewed-by: psandoz, vlivanov, lagergren
 2016-06-15 11:21:36 +03:00
Tobias Hartmann
ebc384160f 8154763: Crash with "assert(RangeCheckElimination)" if RangeCheckElimination is disabled 
Disable multiversioning if range check elimination is turned off.

Reviewed-by: mcberg, kvn
 2016-04-25 10:51:44 +02:00
Michael Berg
ff80cc58c9 8151573: Multiversioning for range check elimination 
Range check elimination in post loops

Reviewed-by: kvn
 2016-04-05 10:34:05 -07:00
Zoltan Majo
69d14c811b 8072422: Cleanup: Remove some unused flags/code in loop optimizations 
Remove unused flags, change test using them.

Reviewed-by: kvn, twisti
 2016-04-04 12:52:11 +02:00
Zoltan Majo
5751808a6c 8148754: C2 loop unrolling fails due to unexpected graph shape 
Check if graph shape is appropriate for optimization, bail out optimization if not.

Reviewed-by: kvn, twisti, shade, dnsimon
 2016-03-21 09:51:20 +01:00
Aleksey Shipilev
0c43809cfe 8148146: Integrate new internal Unsafe entry points, and basic intrinsic support for VarHandles 
Reviewed-by: psandoz, kvn, jrose, adinn, simonis, coleenp
 2016-02-23 22:09:41 +03:00
Michael Berg
3ade110066 8149421: Vectorized Post Loops 
Add vectorised post loop for counted loops with vectors.

Reviewed-by: kvn
 2016-02-12 16:12:15 -08:00
Roland Westrelin
7fa54e38e6 8137049: Code quality: reducing an trivial integer loop does not produce an optimal code 
Canonicalized if shape not recognized by empty loop detection code

Reviewed-by: kvn, shade
 2016-01-29 17:18:35 +01:00
Roland Westrelin
1462f0b038 8147645: get_ctrl_no_update() code is wrong 
Array.fill intrinsification code doesn't mark replaced control as dead

Reviewed-by: kvn
 2016-02-03 10:58:50 +01:00
Tobias Hartmann
ca56200977 6675699: need comprehensive fix for unconstrained ConvI2L with narrowed type 
Emit CastII to make narrow ConvI2L dependent on the corresponding range check.

Reviewed-by: kvn, roland
 2016-01-18 08:40:25 +01:00
Andrew Haley
c4a81b327d 8145096: Undefined behaviour in HotSpot 
Fix some integer overflows

Reviewed-by: jrose, kvn, kbarrett, adinn, iklam
 2015-12-21 16:58:29 +00:00
Tobias Hartmann
60da2fdb6f 8145754: PhaseIdealLoop::is_scaled_iv_plus_offset() does not match AddI 
Is_scaled_iv_plus_offset() should handle AddI nodes with scaled iv as second input.

Reviewed-by: kvn
 2015-12-21 10:14:26 +01:00
Christian Thalinger
6896030b96 8140424: don't prefix developer and notproduct flag variables with CONST_ in product builds 
Reviewed-by: goetz, stefank
 2015-11-11 16:32:17 -10:00
Roland Westrelin
fa6545ccc1 8137168: Replace IfNode with a new RangeCheckNode for range checks 
New RangeCheckNode to enable optimization of explicit library level range checks

Reviewed-by: kvn, thartmann
 2015-11-09 11:28:31 +01:00
Tobias Hartmann
7af927f9c1 8141132: JEP 254: Compact Strings 
Adopt a more space-efficient internal representation for strings.

Co-authored-by: Brent Christian <brent.christian@oracle.com>
Co-authored-by: Vivek Deshpande <vivek.r.deshpande@intel.com>
Co-authored-by: Charlie Hunt <charlie.hunt@oracle.com>
Co-authored-by: Vladimir Kozlov <vladimir.kozlov@oracle.com>
Co-authored-by: Roger Riggs <roger.riggs@oracle.com>
Co-authored-by: Xueming Shen <xueming.shen@oracle.com>
Co-authored-by: Aleksey Shipilev <aleksey.shipilev@oracle.com>
Co-authored-by: Sandhya Viswanathan <sandhya.viswanathan@intel.com>
Reviewed-by: alanb, bdelsart, coleenp, iklam, jiangli, jrose, kevinw, naoto, pliden, roland, smarks, twisti
 2015-11-03 09:41:03 +01:00
Vlad Ureche
645a55a98f 8011858: Use Compile::live_nodes() instead of Compile::unique() in appropriate places 
Reviewed-by: kvn, vlivanov
 2015-08-10 10:39:19 -07:00
Vladimir Kozlov
b5284a93ce 8129920: Vectorized loop unrolling 
Optimize loop opts for vectorizible loops.

Reviewed-by: kvn, roland
 2015-07-10 11:59:09 -07:00
Goetz Lindenmaier
07c7774cd7 8086069: Adapt runtime calls to recent intrinsics to pass ints as long 
Remove CCallingConventionRequiresIntsAsLongs from shared code and push functionality to native wrapper. Less optimal but more flexible.

Reviewed-by: jrose, kvn
 2015-06-29 15:30:55 +02:00
Michael Berg
7c7b91845f 8080325: SuperWord loop unrolling analysis 
Determine loop unroll factor based on supported vectors sizes.

Reviewed-by: roland, kvn
 2015-06-16 16:10:36 -07:00
Roland Westrelin
513d9a5ede 8085832: Optimize main and post loop out when pre loop is found empty 
Eliminate main loop and post loop if pre loop becomes empty

Reviewed-by: kvn, mcberg
 2015-05-12 14:26:31 +02:00
Roland Westrelin
0fb315714c 8078866: compiler/eliminateAutobox/6934604/TestIntBoxing.java assert(p_f->Opcode() == Op_IfFalse) failed 
Bail out from range check elimination if pre loop is not found

Reviewed-by: kvn
 2015-06-04 16:19:22 +02:00
Roland Westrelin
81b0f156c8 8080976: Unexpected AIOOB thrown from 1.9.0-ea-b64 on (regression) 
Loop variant use in reduction should prevent vectorization

Reviewed-by: kvn, mcberg
 2015-05-29 16:09:16 +02:00
Jan Civlin
c7d33de202 8076284: Improve vectorization of parallel streams 
Improve vectorization of java/util/stream/Streams$RangeIntSpliterator::forEachRemaining() method and enable loop vectorization in a given method on demand.

Reviewed-by: kvn
 2015-05-05 12:33:57 -07:00
Michael C Berg
9e55e44c85 8074981: Integer/FP scalar reduction optimization 
Add scalar reduction optimization to C2 to take advantage of vector instructions in modern x86 CPUs.

Reviewed-by: kvn, twisti
 2015-04-01 18:07:50 -07:00
Roland Westrelin
f4f9769cd2 8073184: Compile of java.lang.Integer::getChars fails with LoopLimitCheck = false after 8054478 
CastII that guards counted loops confuses range check elimination with LoopLimitCheck off

Reviewed-by: kvn, iveresov
 2015-02-24 15:23:05 +01:00
Vladimir Kozlov
834ff91cc5 8068864: C2 failed: modified node is not on IGVN._worklist 
Use igvn.replace_input_of() instead of set_req().

Reviewed-by: iveresov, vlivanov
 2015-01-14 17:27:00 -08:00
Roland Westrelin
4bc2edad15 8054478: C2: Incorrectly compiled char[] array access crashes JVM 
Dead backbranch in main loop results in erroneous array access

Reviewed-by: kvn, iveresov
 2014-11-13 09:19:46 +01:00
Vladimir Ivanov
5a00d5f6b5 8058148: MaxNodeLimit and LiveNodeCountInliningCutoff 
Reviewed-by: kvn, roland
 2014-11-24 07:29:03 -08:00
Tobias Hartmann
e3073f2e53 8053915: bigapps assert failure in C2: modified node is not on IGVN._worklist 
Add modified node to the IGVN worklist in 'PhaseIdealLoop::do_range_check'.

Reviewed-by: kvn, roland
 2014-07-31 08:39:47 +02:00
Tobias Hartmann
11eb4553c9 8040213: C2 does not put all modified nodes on IGVN worklist 
Verification code is added that checks if modified nodes are put on the IGVN worklist and modified nodes are processed by 'PhaseIterGVN::transform_old()'

Reviewed-by: kvn, jrose
 2014-07-25 10:06:17 +02:00
Tobias Hartmann
2a0815a55e 8034812: remove IDX_INIT macro hack in Node class 
The IDX_INIT macro used by Node::Node(...) to retrieve the Compile object is removed and replaced by a call to Compile::current(). The Node constructor, new operator and all calls to it are adapted accordingly.

Reviewed-by: kvn, jrose, iveresov, goetz
 2014-06-02 08:07:29 +02:00
Vladimir Kozlov
8badeecc2c 8039050: Crash in C2 compiler at Node::rematerialize 
Added missing calls to record_for_igvn() in loop opts. Added verification of def-use domination.

Reviewed-by: iveresov
 2014-04-15 14:34:48 -07:00
Morris Meyer
6db303a301 8001532: C2 node files refactoring 
Split C2 node files into cast, convert, countbits, intrinsic, move, narrowptr and opaquenode classes

Reviewed-by: kvn, morris
 2014-04-01 09:05:20 -07:00
Vladimir Kozlov
97a51c5c2a 8031320: Use Intel RTM instructions for locks 
Use RTM for inflated locks and stack locks.

Reviewed-by: iveresov, twisti, roland, dcubed
 2014-03-20 17:49:27 -07:00
Rickard Bäckman
0b85ee832e 8027754: Enable loop optimizations for loops with MathExact inside 
Reviewed-by: kvn, iveresov
 2014-01-23 12:08:28 +01:00
Vladimir Kozlov
c3a0e80e0b Merge 2014-01-28 12:25:34 -08:00
Mikael Vidstedt
a0da47fd66 8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013 
Copyright year updated for files modified during 2013

Reviewed-by: twisti, iveresov
 2013-12-24 11:48:39 -08:00
Vladimir Kozlov
aabed3781b Merge 2013-11-21 12:30:35 -08:00
Vladimir Kozlov
39b0e57fdd Merge 2013-11-05 17:38:04 -08:00
Igor Veresov
c342a79faf 8017065: C2 allows safepoint checks to leak into G1 pre-barriers 
Make all raw loads strictly respect control dependencies, make sure RCE doesn't move raw loads, add verification of G1 pre-barriers.

Reviewed-by: kvn, roland
 2013-11-05 01:57:18 -08:00
Rickard Bäckman
612252d7a2 8027444: mathExact: assert(i < _max) failed: oob: i=1, _max=1 
Reviewed-by: duke
 2013-10-30 13:14:09 +01:00
Rickard Bäckman
441f1d74cf 8024924: Intrinsify java.lang.Math.addExact 
Reviewed-by: kvn, twisti
 2013-09-27 08:39:19 +02:00
Goetz Lindenmaier
5d63d647c1 8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints 
Some platforms, as ppc and s390x/zArch require that 32-bit ints are passed as 64-bit values to C functions. This change adds support to adapt the signature and to issue proper casts to c2-compiled stubs. The functions are used in generate_native_wrapper(). Adapt signature used by the compiler as in PhaseIdealLoop::intrinsify_fill().

Reviewed-by: kvn
 2013-09-18 14:34:56 -07:00
Vladimir Kozlov
20f7d1a82a 8022993: Convert MAX_UNROLL constant to LoopMaxUnroll C2 flag 
Replace MAX_UNROLL constant with new C2 LoopMaxUnroll flag.

Reviewed-by: roland
 2013-08-14 10:21:26 -07:00
Morris Meyer
a62f572a50 8009181: [parfait] Null pointer deference in hotspot/src/share/vm/opto/loopTransform.cpp 
Add guarantee() to insert_pre_post_loops()

Reviewed-by: kvn
 2013-03-20 07:05:40 -07:00
Vladimir Kozlov
9e0c61f822 6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86 
Use SSE4.2 and AVX2 instructions for encodeArray intrinsic.

Reviewed-by: roland
 2013-01-22 15:34:16 -08:00
Bharadwaj Yadavalli
2d2532e740 7092905: C2: Keep track of the number of dead nodes 
Keep an (almost) accurate running count of the reachable (live) flow graph nodes.

Reviewed-by: kvn, twisti, jrose, vlivanov
 2012-11-27 17:24:15 -08:00
Abhijit Saha
19fc2d4d88 Merge 2012-10-18 21:58:55 -07:00