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Unified Diff: src/ia32/lithium-codegen-ia32.cc

Issue 263923004: Next bunch of fixes for check elimination. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 7 months ago
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Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index ba43e4230fd9667577d5fa7457443da20f178e59..ee37d0b5837404cc9db6bfd420a69f615221da67 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -2011,9 +2011,15 @@ void LCodeGen::DoConstantE(LConstantE* instr) {
void LCodeGen::DoConstantT(LConstantT* instr) {
Register reg = ToRegister(instr->result());
- Handle<Object> handle = instr->value(isolate());
+ Handle<Object> object = instr->value(isolate());
AllowDeferredHandleDereference smi_check;
- __ LoadObject(reg, handle);
+ if (instr->hydrogen()->HasObjectMap()) {
+ Handle<Map> object_map = instr->hydrogen()->ObjectMap().handle();
+ CHECK(object->IsHeapObject());
+ CHECK(!object_map->is_stable() ||
+ *object_map == Handle<HeapObject>::cast(object)->map());
+ }
+ __ LoadObject(reg, object);
}
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