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emit_x64_vector: Implement EmitVectorPolynomialMultiplyLong64 in terms of pclmulqdq

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MerryMage 2020-06-18 18:04:23 +01:00
parent 7402d38675
commit f5b41aabc6
1 changed files with 11 additions and 0 deletions
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11
src/backend/x64/emit_x64_vector.cpp
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@ -2509,6 +2509,17 @@ void EmitX64::EmitVectorPolynomialMultiplyLong8(EmitContext& ctx, IR::Inst* inst
}
void EmitX64::EmitVectorPolynomialMultiplyLong64(EmitContext& ctx, IR::Inst* inst) {
if (code.HasPCLMULQDQ()) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const Xbyak::Xmm xmm_a = ctx.reg_alloc.UseScratchXmm(args[0]);
const Xbyak::Xmm xmm_b = ctx.reg_alloc.UseXmm(args[1]);
code.pclmulqdq(xmm_a, xmm_b, 0x00);
ctx.reg_alloc.DefineValue(inst, xmm_a);
return;
}
EmitTwoArgumentFallback(code, ctx, inst, [](VectorArray<u64>& result, const VectorArray<u64>& a, const VectorArray<u64>& b) {
const auto handle_high_bits = [](u64 lhs, u64 rhs) {
constexpr size_t bit_size = Common::BitSize<u64>();