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/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index eb3f7c1..185c3a5 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -2561,8 +2561,8 @@
void MacroAssembler::CheckMap(Register obj,
Handle<Map> map,
Label* fail,
- bool is_heap_object) {
- if (!is_heap_object) {
+ SmiCheckType smi_check_type) {
+ if (smi_check_type == DO_SMI_CHECK) {
JumpIfSmi(obj, fail);
}
Cmp(FieldOperand(obj, HeapObject::kMapOffset), map);
@@ -2570,6 +2570,37 @@
}
+void MacroAssembler::ClampUint8(Register reg) {
+ Label done;
+ testl(reg, Immediate(0xFFFFFF00));
+ j(zero, &done, Label::kNear);
+ setcc(negative, reg); // 1 if negative, 0 if positive.
+ decb(reg); // 0 if negative, 255 if positive.
+ bind(&done);
+}
+
+
+void MacroAssembler::ClampDoubleToUint8(XMMRegister input_reg,
+ XMMRegister temp_xmm_reg,
+ Register result_reg,
+ Register temp_reg) {
+ Label done;
+ Set(result_reg, 0);
+ xorps(temp_xmm_reg, temp_xmm_reg);
+ ucomisd(input_reg, temp_xmm_reg);
+ j(below, &done, Label::kNear);
+ uint64_t one_half = BitCast<uint64_t, double>(0.5);
+ Set(temp_reg, one_half);
+ movq(temp_xmm_reg, temp_reg);
+ addsd(temp_xmm_reg, input_reg);
+ cvttsd2si(result_reg, temp_xmm_reg);
+ testl(result_reg, Immediate(0xFFFFFF00));
+ j(zero, &done, Label::kNear);
+ Set(result_reg, 255);
+ bind(&done);
+}
+
+
void MacroAssembler::AbortIfNotNumber(Register object) {
Label ok;
Condition is_smi = CheckSmi(object);
@@ -3571,7 +3602,7 @@
movq(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");