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

Issue 1178903003: Add script context with context-allocated "const this" (Closed) Base URL: https://chromium.googlesource.com/v8/v8@master
Patch Set: Add test Created 5 years, 6 months ago
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Index: src/ia32/full-codegen-ia32.cc
diff --git a/src/ia32/full-codegen-ia32.cc b/src/ia32/full-codegen-ia32.cc
index 40d54a6d691dadede991e5ac253e9aa32d025072..202740b385cc93bef3ba8e9a966d8d6a2708f004 100644
--- a/src/ia32/full-codegen-ia32.cc
+++ b/src/ia32/full-codegen-ia32.cc
@@ -3006,10 +3006,7 @@ void FullCodeGenerator::EmitResolvePossiblyDirectEval(int arg_count) {
// Push the enclosing function.
__ push(Operand(ebp, JavaScriptFrameConstants::kFunctionOffset));
- // Push the receiver of the enclosing function.
- Variable* this_var = scope()->LookupThis();
- DCHECK_NOT_NULL(this_var);
- __ push(VarOperand(this_var, ecx));
+
// Push the language mode.
__ push(Immediate(Smi::FromInt(language_mode())));
@@ -3017,7 +3014,7 @@ void FullCodeGenerator::EmitResolvePossiblyDirectEval(int arg_count) {
__ push(Immediate(Smi::FromInt(scope()->start_position())));
// Do the runtime call.
- __ CallRuntime(Runtime::kResolvePossiblyDirectEval, 6);
+ __ CallRuntime(Runtime::kResolvePossiblyDirectEval, 5);
}
@@ -3049,8 +3046,8 @@ void FullCodeGenerator::VisitCall(Call* expr) {
if (call_type == Call::POSSIBLY_EVAL_CALL) {
// In a call to eval, we first call RuntimeHidden_ResolvePossiblyDirectEval
- // to resolve the function we need to call and the receiver of the call.
- // Then we call the resolved function using the given arguments.
+ // to resolve the function we need to call. Then we call the resolved
+ // function using the given arguments.
ZoneList<Expression*>* args = expr->arguments();
int arg_count = args->length();
{ PreservePositionScope pos_scope(masm()->positions_recorder());
@@ -3067,9 +3064,7 @@ void FullCodeGenerator::VisitCall(Call* expr) {
__ push(Operand(esp, (arg_count + 1) * kPointerSize));
EmitResolvePossiblyDirectEval(arg_count);
- // The runtime call returns a pair of values in eax (function) and
- // edx (receiver). Touch up the stack with the right values.
- __ mov(Operand(esp, (arg_count + 0) * kPointerSize), edx);
+ // Touch up the stack with the resolved function.
__ mov(Operand(esp, (arg_count + 1) * kPointerSize), eax);
PrepareForBailoutForId(expr->EvalOrLookupId(), NO_REGISTERS);
@@ -4703,9 +4698,10 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
context()->Plug(eax);
} else if (proxy != NULL) {
Variable* var = proxy->var();
- // Delete of an unqualified identifier is disallowed in strict mode
- // but "delete this" is allowed.
- DCHECK(is_sloppy(language_mode()) || var->is_this());
+ // Delete of an unqualified identifier is disallowed in strict mode but
+ // "delete this" is allowed.
+ bool is_this = var->HasThisName(isolate());
+ DCHECK(is_sloppy(language_mode()) || is_this);
if (var->IsUnallocated()) {
__ push(GlobalObjectOperand());
__ push(Immediate(var->name()));
@@ -4716,7 +4712,7 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
// Result of deleting non-global variables is false. 'this' is
// not really a variable, though we implement it as one. The
// subexpression does not have side effects.
- context()->Plug(var->is_this());
+ context()->Plug(is_this);
} else {
// Non-global variable. Call the runtime to try to delete from the
// context where the variable was introduced.
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