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Unified Diff: src/arm64/stub-cache-arm64.cc

Issue 167303005: Track field types. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Addressed comments Created 6 years, 8 months ago
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Index: src/arm64/stub-cache-arm64.cc
diff --git a/src/arm64/stub-cache-arm64.cc b/src/arm64/stub-cache-arm64.cc
index aed9af998f631201240eb630b917788813bdb15b..e5383f166dbe21ff085ce286e3c69c8461851974 100644
--- a/src/arm64/stub-cache-arm64.cc
+++ b/src/arm64/stub-cache-arm64.cc
@@ -392,7 +392,14 @@ void StoreStubCompiler::GenerateStoreTransition(MacroAssembler* masm,
} else if (representation.IsSmi()) {
__ JumpIfNotSmi(value_reg, miss_label);
} else if (representation.IsHeapObject()) {
- __ JumpIfSmi(value_reg, miss_label);
+ HeapType* field_type = descriptors->GetFieldType(descriptor);
+ if (field_type->IsClass()) {
+ __ CheckMap(value_reg, scratch1, field_type->AsClass(),
+ miss_label, DO_SMI_CHECK);
+ } else {
+ ASSERT(HeapType::Any()->Is(field_type));
+ __ JumpIfSmi(value_reg, miss_label);
+ }
} else if (representation.IsDouble()) {
UseScratchRegisterScope temps(masm);
DoubleRegister temp_double = temps.AcquireD();
@@ -541,7 +548,14 @@ void StoreStubCompiler::GenerateStoreField(MacroAssembler* masm,
if (representation.IsSmi()) {
__ JumpIfNotSmi(value_reg, miss_label);
} else if (representation.IsHeapObject()) {
- __ JumpIfSmi(value_reg, miss_label);
+ HeapType* field_type = lookup->GetFieldType();
+ if (field_type->IsClass()) {
+ __ CheckMap(value_reg, scratch1, field_type->AsClass(),
+ miss_label, DO_SMI_CHECK);
+ } else {
+ ASSERT(HeapType::Any()->Is(field_type));
+ __ JumpIfSmi(value_reg, miss_label);
+ }
} else if (representation.IsDouble()) {
UseScratchRegisterScope temps(masm);
DoubleRegister temp_double = temps.AcquireD();
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