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Unified Diff: src/x64/full-codegen-x64.cc

Issue 9117034: New class for Date objects: caches individual date components. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Add constant for index of first barrier-free slot. Created 8 years, 11 months ago
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Index: src/x64/full-codegen-x64.cc
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc
index 4387a321a232098c971605e1d22064d236f5378b..2c237a32daaf8c0dbb384d20149d3dcf60908039 100644
--- a/src/x64/full-codegen-x64.cc
+++ b/src/x64/full-codegen-x64.cc
@@ -2820,6 +2820,25 @@ void FullCodeGenerator::EmitValueOf(CallRuntime* expr) {
}
+void FullCodeGenerator::EmitDateField(CallRuntime* expr) {
+ ZoneList<Expression*>* args = expr->arguments();
+ ASSERT(args->length() == 2);
+ ASSERT_NE(NULL, args->at(1)->AsLiteral());
+ int index = Smi::cast(*(args->at(1)->AsLiteral()->handle()))->value();
+
+ VisitForAccumulatorValue(args->at(0)); // Load the object.
+
+#ifdef DEBUG
+ __ AbortIfSmi(rax);
+ __ CmpObjectType(rax, JS_DATE_TYPE, rbx);
+ __ Assert(equal, "Trying to get date field from non-date.");
+#endif
+
+ __ movq(rax, FieldOperand(rax, JSDate::kValueOffset + kPointerSize * index));
+ context()->Plug(rax);
+}
+
+
void FullCodeGenerator::EmitMathPow(CallRuntime* expr) {
// Load the arguments on the stack and call the runtime function.
ZoneList<Expression*>* args = expr->arguments();
@@ -2860,6 +2879,36 @@ void FullCodeGenerator::EmitSetValueOf(CallRuntime* expr) {
}
+void FullCodeGenerator::EmitSetDateField(CallRuntime* expr) {
+ ZoneList<Expression*>* args = expr->arguments();
+ ASSERT(args->length() == 3);
+ ASSERT_NE(NULL, args->at(1)->AsLiteral());
+ int index = Smi::cast(*(args->at(1)->AsLiteral()->handle()))->value();
+
+ VisitForStackValue(args->at(0)); // Load the object.
+ VisitForAccumulatorValue(args->at(2)); // Load the value.
+ __ pop(rbx); // rax = value. rbx = object.
+
+#ifdef DEBUG
+ __ AbortIfSmi(rbx);
+ __ CmpObjectType(rbx, JS_DATE_TYPE, rcx);
+ __ Assert(equal, "Trying to set date field on non-date.");
+#endif
+
+ // Store the value.
+ __ movq(FieldOperand(rbx, JSDate::kValueOffset + kPointerSize * index), rax);
+ // Caches can only be smi or NaN, so we can skip the write barrier for them.
+ if (index < JSDate::kFirstBarrierFree) {
+ // Update the write barrier. Save the value as it will be
+ // overwritten by the write barrier code and is needed afterward.
+ __ movq(rdx, rax);
+ __ RecordWriteField(rbx, JSDate::kValueOffset + kPointerSize * index,
+ rdx, rcx, kDontSaveFPRegs);
+ }
+ context()->Plug(rax);
+}
+
+
void FullCodeGenerator::EmitNumberToString(CallRuntime* expr) {
ZoneList<Expression*>* args = expr->arguments();
ASSERT_EQ(args->length(), 1);
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