Version 3.3.8
Added MarkIndependent to the persistent handle API. Independent handles are independent of all other persistent handles and can be garbage collected more frequently.
Implemented the get trap for Harmony proxies. Proxies are enabled with the --harmony-proxies flag.
Performance improvements and bug fixes on all platforms.
R=ager@chromium.org
Review URL: http://codereview.chromium.org/7043003
git-svn-id: http://v8.googlecode.com/svn/trunk@7923 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/ia32/macro-assembler-ia32.cc b/src/ia32/macro-assembler-ia32.cc
index d5eda7a..7b2f6cf 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -77,6 +77,36 @@
}
+void MacroAssembler::ClampDoubleToUint8(XMMRegister input_reg,
+ XMMRegister scratch_reg,
+ Register result_reg) {
+ Label done;
+ ExternalReference zero_ref = ExternalReference::address_of_zero();
+ movdbl(scratch_reg, Operand::StaticVariable(zero_ref));
+ Set(result_reg, Immediate(0));
+ ucomisd(input_reg, scratch_reg);
+ j(below, &done, Label::kNear);
+ ExternalReference half_ref = ExternalReference::address_of_one_half();
+ movdbl(scratch_reg, Operand::StaticVariable(half_ref));
+ addsd(scratch_reg, input_reg);
+ cvttsd2si(result_reg, Operand(scratch_reg));
+ test(result_reg, Immediate(0xFFFFFF00));
+ j(zero, &done, Label::kNear);
+ Set(result_reg, Immediate(255));
+ bind(&done);
+}
+
+
+void MacroAssembler::ClampUint8(Register reg) {
+ Label done;
+ test(reg, Immediate(0xFFFFFF00));
+ j(zero, &done, Label::kNear);
+ setcc(negative, reg); // 1 if negative, 0 if positive.
+ dec_b(reg); // 0 if negative, 255 if positive.
+ bind(&done);
+}
+
+
void MacroAssembler::InNewSpace(Register object,
Register scratch,
Condition cc,
@@ -247,10 +277,9 @@
void MacroAssembler::CheckMap(Register obj,
Handle<Map> map,
Label* fail,
- bool is_heap_object) {
- if (!is_heap_object) {
- test(obj, Immediate(kSmiTagMask));
- j(zero, fail);
+ SmiCheckType smi_check_type) {
+ if (smi_check_type == DONT_DO_SMI_CHECK) {
+ JumpIfSmi(obj, fail);
}
cmp(FieldOperand(obj, HeapObject::kMapOffset), Immediate(map));
j(not_equal, fail);
@@ -1712,7 +1741,7 @@
mov(map, FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset));
if (emit_debug_code()) {
Label ok, fail;
- CheckMap(map, isolate()->factory()->meta_map(), &fail, false);
+ CheckMap(map, isolate()->factory()->meta_map(), &fail, DO_SMI_CHECK);
jmp(&ok);
bind(&fail);
Abort("Global functions must have initial map");