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Fix cntlz.

This commit is contained in:
Ben Vanik 2014-05-27 15:15:52 -07:00
parent 2856d38024
commit b0034f3b4d
3 changed files with 8 additions and 8 deletions
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2
src/alloy/compiler/passes/constant_propagation_pass.cc
View File

@ -371,7 +371,7 @@ int ConstantPropagationPass::Run(HIRBuilder* builder) {
case OPCODE_CNTLZ: case OPCODE_CNTLZ:
if (i->src1.value->IsConstant()) { if (i->src1.value->IsConstant()) {
v->set_zero(v->type); v->set_zero(v->type);
v->CountLeadingZeros(i->src1.value->constant); v->CountLeadingZeros(i->src1.value);
i->Remove(); i->Remove();
} }
break; break;

12
src/alloy/hir/value.cc
View File

@ -560,19 +560,19 @@ void Value::ByteSwap() {
} }
} }
void Value::CountLeadingZeros(const ConstantValue& src) { void Value::CountLeadingZeros(const Value* other) {
switch (type) { switch (other->type) {
case INT8_TYPE: case INT8_TYPE:
constant.i8 = __lzcnt16(src.i8) - 8; constant.i8 = static_cast<uint8_t>(__lzcnt16(other->constant.i8) - 8);
break; break;
case INT16_TYPE: case INT16_TYPE:
constant.i8 = __lzcnt16(src.i16); constant.i8 = static_cast<uint8_t>(__lzcnt16(other->constant.i16));
break; break;
case INT32_TYPE: case INT32_TYPE:
constant.i8 = __lzcnt(src.i32); constant.i8 = static_cast<uint8_t>(__lzcnt(other->constant.i32));
break; break;
case INT64_TYPE: case INT64_TYPE:
constant.i8 = __lzcnt64(src.i64); constant.i8 = static_cast<uint8_t>(__lzcnt64(other->constant.i64));
break; break;
default: default:
XEASSERTALWAYS(); XEASSERTALWAYS();

2
src/alloy/hir/value.h
View File

@ -393,7 +393,7 @@ public:
void Shr(Value* other); void Shr(Value* other);
void Sha(Value* other); void Sha(Value* other);
void ByteSwap(); void ByteSwap();
void CountLeadingZeros(const ConstantValue& src); void CountLeadingZeros(const Value* other);
bool Compare(Opcode opcode, Value* other); bool Compare(Opcode opcode, Value* other);
}; };