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frontend/ir_emitter: Add half-precision variant of FPRoundInt

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Lioncash 2019-04-13 17:40:56 -04:00 • committed by MerryMage
parent 61cec94a19
commit ad0c698f89
5 changed files with 25 additions and 7 deletions
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10
src/backend/x64/emit_x64_floating_point.cpp
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@ -843,7 +843,7 @@ static void EmitFPRound(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, siz
const bool exact = inst->GetArg(2).GetU1();
const auto round_imm = ConvertRoundingModeToX64Immediate(rounding_mode);
if (code.DoesCpuSupport(Xbyak::util::Cpu::tSSE41) && round_imm && !exact) {
if (fsize != 16 && code.DoesCpuSupport(Xbyak::util::Cpu::tSSE41) && round_imm && !exact) {
if (fsize == 64) {
FPTwoOp<64>(code, ctx, inst, [&](Xbyak::Xmm result) {
code.roundsd(result, result, *round_imm);
@ -857,7 +857,9 @@ static void EmitFPRound(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, siz
return;
}
using fsize_list = mp::list<mp::vlift<size_t(32)>, mp::vlift<size_t(64)>>;
using fsize_list = mp::list<mp::vlift<size_t(16)>,
mp::vlift<size_t(32)>,
mp::vlift<size_t(64)>>;
using rounding_list = mp::list<
std::integral_constant<FP::RoundingMode, FP::RoundingMode::ToNearest_TieEven>,
std::integral_constant<FP::RoundingMode, FP::RoundingMode::TowardsPlusInfinity>,
@ -897,6 +899,10 @@ static void EmitFPRound(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, siz
code.CallFunction(lut.at(std::make_tuple(fsize, rounding_mode, exact)));
}
void EmitX64::EmitFPRoundInt16(EmitContext& ctx, IR::Inst* inst) {
EmitFPRound(code, ctx, inst, 16);
}
void EmitX64::EmitFPRoundInt32(EmitContext& ctx, IR::Inst* inst) {
EmitFPRound(code, ctx, inst, 32);
}