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MIPS: Don't emit code for instructions that are hiding behind an HSoftDeoptimize

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Port r13412 (36df819b)

BUG=
TEST=

Review URL: https://codereview.chromium.org/12022005
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13422 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
jkummerow@chromium.org 2013-01-18 10:10:36 +00:00
parent 8a6221b1ed
commit 9cf627b3a8
3 changed files with 20 additions and 0 deletions
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5
src/mips/lithium-codegen-mips.cc
View File

@ -5620,6 +5620,11 @@ void LCodeGen::DoDeoptimize(LDeoptimize* instr) {
}
void LCodeGen::DoDummyUse(LDummyUse* instr) {
// Nothing to see here, move on!
}
void LCodeGen::DoDeleteProperty(LDeleteProperty* instr) {
Register object = ToRegister(instr->object());
Register key = ToRegister(instr->key());

5
src/mips/lithium-mips.cc
View File

@ -682,6 +682,11 @@ LInstruction* LChunkBuilder::DoBlockEntry(HBlockEntry* instr) {
}
LInstruction* LChunkBuilder::DoDummyUse(HDummyUse* instr) {
return DefineAsRegister(new(zone()) LDummyUse(UseAny(instr->value())));
}
LInstruction* LChunkBuilder::DoSoftDeoptimize(HSoftDeoptimize* instr) {
return AssignEnvironment(new(zone()) LDeoptimize);
}

10
src/mips/lithium-mips.h
View File

@ -93,6 +93,7 @@ class LCodeGen;
V(Deoptimize) \
V(DivI) \
V(DoubleToI) \
V(DummyUse) \
V(ElementsKind) \
V(FastLiteral) \
V(FixedArrayBaseLength) \
@ -401,6 +402,15 @@ class LLazyBailout: public LTemplateInstruction<0, 0, 0> {
};
class LDummyUse: public LTemplateInstruction<1, 1, 0> {
public:
explicit LDummyUse(LOperand* value) {
inputs_[0] = value;
}
DECLARE_CONCRETE_INSTRUCTION(DummyUse, "dummy-use")
};
class LDeoptimize: public LTemplateInstruction<0, 0, 0> {
public:
DECLARE_CONCRETE_INSTRUCTION(Deoptimize, "deoptimize")