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Unified Diff: src/ia32/code-stubs-ia32.cc

Issue 975463002: Implement subclassing Arrays. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Fix arm again Created 5 years, 10 months ago
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Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index 93cd7d9a3203c9afebfbf975f4a195b373e84a64..f9bc28dd4bc03240b2f2b280600d442dcdb8c7f1 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -4646,7 +4646,7 @@ void ArrayConstructorStub::GenerateDispatchToArrayStub(
void ArrayConstructorStub::Generate(MacroAssembler* masm) {
// ----------- S t a t e -------------
- // -- eax : argc (only if argument_count() == ANY)
+ // -- eax : argc (only if argument_count() is ANY or MORE_THAN_ONE)
// -- ebx : AllocationSite or undefined
// -- edi : constructor
// -- edx : Original constructor
@@ -4680,9 +4680,6 @@ void ArrayConstructorStub::Generate(MacroAssembler* masm) {
__ cmp(ebx, isolate()->factory()->undefined_value());
__ j(equal, &no_info);
- __ cmp(edx, edi);
- __ j(not_equal, &subclassing);
-
// Only look at the lower 16 bits of the transition info.
__ mov(edx, FieldOperand(ebx, AllocationSite::kTransitionInfoOffset));
__ SmiUntag(edx);
@@ -4693,8 +4690,29 @@ void ArrayConstructorStub::Generate(MacroAssembler* masm) {
__ bind(&no_info);
GenerateDispatchToArrayStub(masm, DISABLE_ALLOCATION_SITES);
+ // Subclassing.
__ bind(&subclassing);
- __ TailCallRuntime(Runtime::kThrowArrayNotSubclassableError, 0, 1);
+ __ pop(ecx); // return address.
+ __ push(edi);
+ __ push(edx);
+
+ // Adjust argc.
+ switch (argument_count()) {
+ case ANY:
+ case MORE_THAN_ONE:
+ __ add(eax, Immediate(2));
+ break;
+ case NONE:
+ __ mov(eax, Immediate(2));
+ break;
+ case ONE:
+ __ mov(eax, Immediate(3));
+ break;
+ }
+
+ __ push(ecx);
+ __ JumpToExternalReference(
+ ExternalReference(Runtime::kArrayConstructorWithSubclassing, isolate()));
}

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