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Unified Diff: src/x64/code-stubs-x64.cc

Issue 12490013: Deoptimizer support for hydrogen stubs that accept a variable number of arguments. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Review feedback Created 7 years, 9 months ago
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Index: src/x64/code-stubs-x64.cc
diff --git a/src/x64/code-stubs-x64.cc b/src/x64/code-stubs-x64.cc
index 43ae8ee5959177c502f7e0a39858d51a280bfbf0..fffd37f519db9c9dcb19fb44d5640de8e39093e9 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -95,7 +95,7 @@ static void InitializeArrayConstructorDescriptor(Isolate* isolate,
// stack param count needs (constructor pointer, and single argument)
descriptor->stack_parameter_count_ = &rax;
descriptor->register_params_ = registers;
- descriptor->extra_expression_stack_count_ = 1;
+ descriptor->function_mode_ = JS_FUNCTION_STUB_MODE;
descriptor->deoptimization_handler_ =
FUNCTION_ADDR(ArrayConstructor_StubFailure);
}
@@ -6783,8 +6783,10 @@ void StubFailureTrampolineStub::Generate(MacroAssembler* masm) {
__ movq(rbx, MemOperand(rbp, parameter_count_offset));
masm->LeaveFrame(StackFrame::STUB_FAILURE_TRAMPOLINE);
__ pop(rcx);
- __ lea(rsp, MemOperand(rsp, rbx, times_pointer_size,
- extra_expression_stack_count_ * kPointerSize));
+ int additional_offset = function_mode_ == JS_FUNCTION_STUB_MODE
+ ? kPointerSize
+ : 0;
+ __ lea(rsp, MemOperand(rsp, rbx, times_pointer_size, additional_offset));
__ jmp(rcx); // Return to IC Miss stub, continuation still on stack.
}
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