Constant propogation for DOT_PRODUCT_3.

This commit is contained in:
gibbed 2016-06-20 13:30:19 -05:00
parent dd18112905
commit 53e37c3167
3 changed files with 29 additions and 0 deletions

View File

@ -642,6 +642,15 @@ bool ConstantPropagationPass::Run(HIRBuilder* builder) {
i->Remove(); i->Remove();
} }
break; break;
case OPCODE_DOT_PRODUCT_3:
if (i->src1.value->IsConstant() && i->src2.value->IsConstant()) {
v->set_from(i->src1.value);
v->DotProduct3(i->src2.value);
i->Remove();
}
break;
default: default:
// Ignored. // Ignored.
break; break;

View File

@ -1163,6 +1163,25 @@ void Value::VectorSub(Value* other, TypeName type, bool is_unsigned,
} }
} }
void Value::DotProduct3(Value* other) {
assert_true(this->type == VEC128_TYPE && other->type == VEC128_TYPE);
switch (type) {
case VEC128_TYPE:
alignas(16) float result[4];
__m128 src1 = _mm_load_ps(constant.v128.f32);
__m128 src2 = _mm_load_ps(other->constant.v128.f32);
__m128 dest = _mm_dp_ps(src1, src2, 0b01110001);
_mm_store_ps(result, dest);
// TODO(rick): is this sane?
type = FLOAT32_TYPE;
constant.f32 = result[0];
break;
default:
assert_unhandled_case(type);
break;
}
}
void Value::ByteSwap() { void Value::ByteSwap() {
switch (type) { switch (type) {
case INT8_TYPE: case INT8_TYPE:

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@ -506,6 +506,7 @@ class Value {
void VectorRol(Value* other, TypeName type); void VectorRol(Value* other, TypeName type);
void VectorAdd(Value* other, TypeName type, bool is_unsigned, bool saturate); void VectorAdd(Value* other, TypeName type, bool is_unsigned, bool saturate);
void VectorSub(Value* other, TypeName type, bool is_unsigned, bool saturate); void VectorSub(Value* other, TypeName type, bool is_unsigned, bool saturate);
void DotProduct3(Value* other);
void ByteSwap(); void ByteSwap();
void CountLeadingZeros(const Value* other); void CountLeadingZeros(const Value* other);
bool Compare(Opcode opcode, Value* other); bool Compare(Opcode opcode, Value* other);