Index: src/x64/macro-assembler-x64.cc |
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc |
index eb3f7c19e3d00ae16c41a6a3576f1886cbf86480..185c3a56a518e8039c7edda6358de4d135eec815 100644 |
--- a/src/x64/macro-assembler-x64.cc |
+++ b/src/x64/macro-assembler-x64.cc |
@@ -2561,8 +2561,8 @@ void MacroAssembler::CmpInstanceType(Register map, InstanceType type) { |
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::CheckMap(Register obj, |
} |
+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 @@ void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, |
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"); |