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Unified Diff: src/arm64/code-stubs-arm64.cc

Issue 1622493002: [stubs] Introduce ToNameStub to implement %_ToName. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Fix BuildNumberToString type in Crankshaft. Created 4 years, 11 months ago
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Index: src/arm64/code-stubs-arm64.cc
diff --git a/src/arm64/code-stubs-arm64.cc b/src/arm64/code-stubs-arm64.cc
index a9b647ca80095acce040ac6a3823dc16dae6ea48..d34a0504357cc79daeb185a2fb9fccd458faa372 100644
--- a/src/arm64/code-stubs-arm64.cc
+++ b/src/arm64/code-stubs-arm64.cc
@@ -3878,6 +3878,39 @@ void ToStringStub::Generate(MacroAssembler* masm) {
}
+void ToNameStub::Generate(MacroAssembler* masm) {
+ // The ToName stub takes one argument in x0.
+ Label is_number;
+ __ JumpIfSmi(x0, &is_number);
+
+ Label not_name;
+ STATIC_ASSERT(FIRST_NAME_TYPE == FIRST_TYPE);
+ __ JumpIfObjectType(x0, x1, x1, LAST_NAME_TYPE, &not_name, hi);
+ // x0: receiver
+ // x1: receiver instance type
+ __ Ret();
+ __ Bind(&not_name);
+
+ Label not_heap_number;
+ __ Cmp(x1, HEAP_NUMBER_TYPE);
+ __ B(ne, &not_heap_number);
+ __ Bind(&is_number);
+ NumberToStringStub stub(isolate());
+ __ TailCallStub(&stub);
+ __ Bind(&not_heap_number);
+
+ Label not_oddball;
+ __ Cmp(x1, ODDBALL_TYPE);
+ __ B(ne, &not_oddball);
+ __ Ldr(x0, FieldMemOperand(x0, Oddball::kToStringOffset));
+ __ Ret();
+ __ Bind(&not_oddball);
+
+ __ Push(x0); // Push argument.
+ __ TailCallRuntime(Runtime::kToName);
+}
+
+
void StringHelper::GenerateFlatOneByteStringEquals(
MacroAssembler* masm, Register left, Register right, Register scratch1,
Register scratch2, Register scratch3) {
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