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

Issue 2028633002: Provide a tagged allocation top pointer. Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: WIP: adding a few tests. Created 4 years, 6 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 c144797d73533eebec9b7280ceb35beefb530e93..db11e7ffed8ebf6d3e00515ec8c7ad4887414e16 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -4204,6 +4204,7 @@ void FastNewObjectStub::Generate(MacroAssembler* masm) {
__ movzxbl(rbx, FieldOperand(rcx, Map::kInstanceSizeOffset));
__ leal(rbx, Operand(rbx, times_pointer_size, 0));
__ Allocate(rbx, rax, rdi, no_reg, &allocate, NO_ALLOCATION_FLAGS);
+ __ decp(rdi); // Untag result end.
__ bind(&done_allocate);
// Initialize the JSObject fields.
@@ -4352,6 +4353,7 @@ void FastNewRestParameterStub::Generate(MacroAssembler* masm) {
// Allocate an empty rest parameter array.
Label allocate, done_allocate;
__ Allocate(JSArray::kSize, rax, rdx, rcx, &allocate, NO_ALLOCATION_FLAGS);
+ __ decp(rdx); // Untag result end.
__ bind(&done_allocate);
// Setup the rest parameter array in rax.
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