Suyu/dynarmic
1
0
Fork 0
mirror of https://git.suyu.dev/suyu/dynarmic.git synced 2026-01-06 06:28:13 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

Introduce Unsafe_InaccurateNaN

Browse source
This commit is contained in:
MerryMage 2021-01-01 07:17:34 +00:00
parent 4a9a0d07f7
commit eeeafaf5fb
2 changed files with 19 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

16
src/backend/x64/emit_x64_floating_point.cpp
View file

@ -810,6 +810,22 @@ static void EmitFPRecipStepFused(BlockOfCode& code, EmitContext& ctx, IR::Inst*
using FPT = mp::unsigned_integer_of_size<fsize>;
if constexpr (fsize != 16) {
if (code.HasFMA() && ctx.HasOptimization(OptimizationFlag::Unsafe_InaccurateNaN)) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
Xbyak::Label end, fallback;
const Xbyak::Xmm operand1 = ctx.reg_alloc.UseXmm(args[0]);
const Xbyak::Xmm operand2 = ctx.reg_alloc.UseXmm(args[1]);
const Xbyak::Xmm result = ctx.reg_alloc.ScratchXmm();
code.movaps(result, code.MConst(xword, FP::FPValue<FPT, false, 0, 2>()));
FCODE(vfnmadd231s)(result, operand1, operand2);
ctx.reg_alloc.DefineValue(inst, result);
return;
}
if (code.HasFMA()) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);