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7152811: Issues in client compiler

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Reviewed-by: kvn, jrose
This commit is contained in:
Tom Rodriguez 2012-04-04 20:44:38 -07:00
parent fbcf78297f
commit 3e6d198cf7
2 changed files with 32 additions and 9 deletions
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36
hotspot/src/share/vm/ci/ciField.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1999, 2012, 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
@ -67,7 +67,7 @@
// ------------------------------------------------------------------
// ciField::ciField
ciField::ciField(ciInstanceKlass* klass, int index): _known_to_link_with(NULL) {
ciField::ciField(ciInstanceKlass* klass, int index): _known_to_link_with_put(NULL), _known_to_link_with_get(NULL) {
ASSERT_IN_VM;
CompilerThread *thread = CompilerThread::current();
@ -143,7 +143,7 @@ ciField::ciField(ciInstanceKlass* klass, int index): _known_to_link_with(NULL) {
initialize_from(&field_desc);
}
ciField::ciField(fieldDescriptor *fd): _known_to_link_with(NULL) {
ciField::ciField(fieldDescriptor *fd): _known_to_link_with_put(NULL), _known_to_link_with_get(NULL) {
ASSERT_IN_VM;
_cp_index = -1;
@ -315,6 +315,10 @@ ciType* ciField::compute_type_impl() {
bool ciField::will_link(ciInstanceKlass* accessing_klass,
Bytecodes::Code bc) {
VM_ENTRY_MARK;
assert(bc == Bytecodes::_getstatic || bc == Bytecodes::_putstatic ||
bc == Bytecodes::_getfield || bc == Bytecodes::_putfield,
"unexpected bytecode");
if (_offset == -1) {
// at creation we couldn't link to our holder so we need to
// maintain that stance, otherwise there's no safe way to use this
@ -322,8 +326,21 @@ bool ciField::will_link(ciInstanceKlass* accessing_klass,
return false;
}
if (_known_to_link_with == accessing_klass) {
return true;
// Check for static/nonstatic mismatch
bool is_static = (bc == Bytecodes::_getstatic || bc == Bytecodes::_putstatic);
if (is_static != this->is_static()) {
return false;
}
// Get and put can have different accessibility rules
bool is_put = (bc == Bytecodes::_putfield || bc == Bytecodes::_putstatic);
if (is_put) {
if (_known_to_link_with_put == accessing_klass) {
return true;
}
if (_known_to_link_with_get == accessing_klass) {
return true;
}
}
FieldAccessInfo result;
@ -334,8 +351,13 @@ bool ciField::will_link(ciInstanceKlass* accessing_klass,
true, false, KILL_COMPILE_ON_FATAL_(false));
// update the hit-cache, unless there is a problem with memory scoping:
if (accessing_klass->is_shared() || !is_shared())
_known_to_link_with = accessing_klass;
if (accessing_klass->is_shared() || !is_shared()) {
if (is_put) {
_known_to_link_with_put = accessing_klass;
} else {
_known_to_link_with_get = accessing_klass;
}
}
return true;
}

5
hotspot/src/share/vm/ci/ciField.hpp
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1999, 2012, 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
@ -49,7 +49,8 @@ private:
ciType* _type;
int _offset;
bool _is_constant;
ciInstanceKlass* _known_to_link_with;
ciInstanceKlass* _known_to_link_with_put;
ciInstanceKlass* _known_to_link_with_get;
ciConstant _constant_value;
// Used for will_link