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X87: Reland "Add basic crankshaft support for slow-mode for-in to avoid disabling optimizations"

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port 8098253562 (r27898)

original commit message:

BUG=

Review URL: https://codereview.chromium.org/1086813004

Cr-Commit-Position: refs/heads/master@{#27906}
This commit is contained in:
chunyang.dai 2015-04-17 01:18:14 -07:00 committed by Commit bot
parent f61f521d70
commit 548a0b3bbd
1 changed files with 0 additions and 6 deletions
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6
src/x87/lithium-codegen-x87.cc
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@ -6206,12 +6206,6 @@ void LCodeGen::DoOsrEntry(LOsrEntry* instr) {
void LCodeGen::DoForInPrepareMap(LForInPrepareMap* instr) {
DCHECK(ToRegister(instr->context()).is(esi));
__ cmp(eax, isolate()->factory()->undefined_value());
DeoptimizeIf(equal, instr, Deoptimizer::kUndefined);
__ cmp(eax, isolate()->factory()->null_value());
DeoptimizeIf(equal, instr, Deoptimizer::kNull);
__ test(eax, Immediate(kSmiTagMask));
DeoptimizeIf(zero, instr, Deoptimizer::kSmi);