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Don't create dummy uses for control dependencies.

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R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/149513002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18900 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
bmeurer@chromium.org 2014-01-29 12:48:32 +00:00
parent 5bf5849f9f
commit 1e6606849a
4 changed files with 8 additions and 0 deletions
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2
src/arm/lithium-arm.cc
View File

@ -847,10 +847,12 @@ void LChunkBuilder::VisitInstruction(HInstruction* current) {
if (current->OperandCount() == 0) {
instr = DefineAsRegister(new(zone()) LDummy());
} else {
ASSERT(!current->OperandAt(0)->IsControlInstruction());
instr = DefineAsRegister(new(zone())
LDummyUse(UseAny(current->OperandAt(0))));
}
for (int i = 1; i < current->OperandCount(); ++i) {
if (current->OperandAt(i)->IsControlInstruction()) continue;
LInstruction* dummy =
new(zone()) LDummyUse(UseAny(current->OperandAt(i)));
dummy->set_hydrogen_value(current);

2
src/ia32/lithium-ia32.cc
View File

@ -911,10 +911,12 @@ void LChunkBuilder::VisitInstruction(HInstruction* current) {
if (current->OperandCount() == 0) {
instr = DefineAsRegister(new(zone()) LDummy());
} else {
ASSERT(!current->OperandAt(0)->IsControlInstruction());
instr = DefineAsRegister(new(zone())
LDummyUse(UseAny(current->OperandAt(0))));
}
for (int i = 1; i < current->OperandCount(); ++i) {
if (current->OperandAt(i)->IsControlInstruction()) continue;
LInstruction* dummy =
new(zone()) LDummyUse(UseAny(current->OperandAt(i)));
dummy->set_hydrogen_value(current);

2
src/mips/lithium-mips.cc
View File

@ -855,10 +855,12 @@ void LChunkBuilder::VisitInstruction(HInstruction* current) {
if (current->OperandCount() == 0) {
instr = DefineAsRegister(new(zone()) LDummy());
} else {
ASSERT(!current->OperandAt(0)->IsControlInstruction());
instr = DefineAsRegister(new(zone())
LDummyUse(UseAny(current->OperandAt(0))));
}
for (int i = 1; i < current->OperandCount(); ++i) {
if (current->OperandAt(i)->IsControlInstruction()) continue;
LInstruction* dummy =
new(zone()) LDummyUse(UseAny(current->OperandAt(i)));
dummy->set_hydrogen_value(current);

2
src/x64/lithium-x64.cc
View File

@ -857,10 +857,12 @@ void LChunkBuilder::VisitInstruction(HInstruction* current) {
if (current->OperandCount() == 0) {
instr = DefineAsRegister(new(zone()) LDummy());
} else {
ASSERT(!current->OperandAt(0)->IsControlInstruction());
instr = DefineAsRegister(new(zone())
LDummyUse(UseAny(current->OperandAt(0))));
}
for (int i = 1; i < current->OperandCount(); ++i) {
if (current->OperandAt(i)->IsControlInstruction()) continue;
LInstruction* dummy =
new(zone()) LDummyUse(UseAny(current->OperandAt(i)));
dummy->set_hydrogen_value(current);