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emit_x64_vector_floating_point: Implement workaround for issue 678

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This commit is contained in:
SachinVin 2022-07-03 12:25:25 +05:30
parent af0d4a7c18
commit 9f88f234a1
1 changed files with 3 additions and 4 deletions
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7
src/backend/x64/emit_x64_vector_floating_point.cpp
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@ -1170,8 +1170,6 @@ void EmitX64::EmitFPVectorRecipStepFused64(EmitContext& ctx, IR::Inst* inst) {
template<size_t fsize>
void EmitFPVectorRoundInt(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
using FPT = mp::unsigned_integer_of_size<fsize>;
const auto rounding = static_cast<FP::RoundingMode>(inst->GetArg(1).GetU8());
const bool exact = inst->GetArg(2).GetU1();
@ -1211,6 +1209,7 @@ void EmitFPVectorRoundInt(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
static const auto lut = Common::GenerateLookupTableFromList(
[](auto arg) {
using FPT = mp::unsigned_integer_of_size<fsize>;
return std::pair{
mp::lower_to_tuple_v<decltype(arg)>,
Common::FptrCast(
@ -1356,8 +1355,6 @@ void EmitX64::EmitFPVectorSub64(EmitContext& ctx, IR::Inst* inst) {
template<size_t fsize, bool unsigned_>
void EmitFPVectorToFixed(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
using FPT = mp::unsigned_integer_of_size<fsize>;
const size_t fbits = inst->GetArg(1).GetU8();
const auto rounding = static_cast<FP::RoundingMode>(inst->GetArg(2).GetU8());
@ -1446,6 +1443,7 @@ void EmitFPVectorToFixed(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
// Saturate to max
FCODE(orp)(src, exceed_unsigned);
} else {
using FPT = mp::unsigned_integer_of_size<fsize>; // WORKAROUND: For issue 678 on MSVC
constexpr u64 integer_max = static_cast<FPT>(std::numeric_limits<std::conditional_t<unsigned_, FPT, std::make_signed_t<FPT>>>::max());
code.movaps(xmm0, GetVectorOf<fsize, float_upper_limit_signed>(code));
@ -1470,6 +1468,7 @@ void EmitFPVectorToFixed(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
static const auto lut = Common::GenerateLookupTableFromList(
[](auto arg) {
using FPT = mp::unsigned_integer_of_size<fsize>; // WORKAROUND: For issue 678 on MSVC
return std::pair{
mp::lower_to_tuple_v<decltype(arg)>,
Common::FptrCast(