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Unified Diff: src/ic/mips/handler-compiler-mips.cc

Issue 877343003: Fix register aliasing after r26306, r26275. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Remove comment Created 5 years, 11 months ago
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Index: src/ic/mips/handler-compiler-mips.cc
diff --git a/src/ic/mips/handler-compiler-mips.cc b/src/ic/mips/handler-compiler-mips.cc
index d9dc2b0dc3cbb1ff262263d2ac44c2eb5e27473f..cb394da9a1b5a7af5a8e593e5f4083e47da4a613 100644
--- a/src/ic/mips/handler-compiler-mips.cc
+++ b/src/ic/mips/handler-compiler-mips.cc
@@ -18,7 +18,8 @@ namespace internal {
void NamedLoadHandlerCompiler::GenerateLoadViaGetter(
MacroAssembler* masm, Handle<HeapType> type, Register receiver,
- Register holder, int accessor_index, int expected_arguments) {
+ Register holder, int accessor_index, int expected_arguments,
+ Register scratch) {
// ----------- S t a t e -------------
// -- a0 : receiver
// -- a2 : name
@@ -28,11 +29,14 @@ void NamedLoadHandlerCompiler::GenerateLoadViaGetter(
FrameScope scope(masm, StackFrame::INTERNAL);
if (accessor_index >= 0) {
+ DCHECK(!holder.is(scratch));
+ DCHECK(!receiver.is(scratch));
// Call the JavaScript getter with the receiver on the stack.
if (IC::TypeToMap(*type, masm->isolate())->IsJSGlobalObjectMap()) {
// Swap in the global receiver.
- __ lw(receiver,
+ __ lw(scratch,
FieldMemOperand(receiver, JSGlobalObject::kGlobalProxyOffset));
+ receiver = scratch;
}
__ push(receiver);
ParameterCount actual(0);
@@ -54,7 +58,8 @@ void NamedLoadHandlerCompiler::GenerateLoadViaGetter(
void NamedStoreHandlerCompiler::GenerateStoreViaSetter(
MacroAssembler* masm, Handle<HeapType> type, Register receiver,
- Register holder, int accessor_index, int expected_arguments) {
+ Register holder, int accessor_index, int expected_arguments,
+ Register scratch) {
// ----------- S t a t e -------------
// -- ra : return address
// -----------------------------------
@@ -65,11 +70,15 @@ void NamedStoreHandlerCompiler::GenerateStoreViaSetter(
__ push(value());
if (accessor_index >= 0) {
+ DCHECK(!holder.is(scratch));
+ DCHECK(!receiver.is(scratch));
+ DCHECK(!value().is(scratch));
// Call the JavaScript setter with receiver and value on the stack.
if (IC::TypeToMap(*type, masm->isolate())->IsJSGlobalObjectMap()) {
// Swap in the global receiver.
- __ lw(receiver,
+ __ lw(scratch,
FieldMemOperand(receiver, JSGlobalObject::kGlobalProxyOffset));
+ receiver = scratch;
}
__ Push(receiver, value());
ParameterCount actual(1);
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