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emit_x64_vector_floating_point: Introduce ICODE

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This commit is contained in:
MerryMage 2020-06-25 19:28:49 +01:00
parent 4f967387c0
commit 7022281a0b
1 changed files with 17 additions and 21 deletions
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36
src/backend/x64/emit_x64_vector_floating_point.cpp
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@ -35,19 +35,23 @@ using namespace Xbyak::util;
namespace {
template<size_t fsize, typename T>
T ChooseOnFsize([[maybe_unused]] T f32, [[maybe_unused]] T f64) {
static_assert(fsize == 32 || fsize == 64, "fsize must be either 32 or 64");
if constexpr (fsize == 32) {
return f32;
} else {
return f64;
#define FCODE(NAME) \
[&code](auto... args){ \
if constexpr (fsize == 32) { \
code.NAME##s(args...); \
} else { \
code.NAME##d(args...); \
} \
}
#define ICODE(NAME) \
[&code](auto... args){ \
if constexpr (fsize == 32) { \
code.NAME##d(args...); \
} else { \
code.NAME##q(args...); \
} \
}
#define FCODE(NAME) (code.*ChooseOnFsize<fsize>(&Xbyak::CodeGenerator::NAME##s, &Xbyak::CodeGenerator::NAME##d))
template<typename Lambda>
void MaybeStandardFPSCRValue(BlockOfCode& code, EmitContext& ctx, bool fpcr_controlled, Lambda lambda) {
const bool switch_mxcsr = ctx.FPCR(fpcr_controlled) != ctx.FPCR();
@ -1370,11 +1374,7 @@ static void EmitRSqrtStepFused(BlockOfCode& code, EmitContext& ctx, IR::Inst* in
// An explanation for this is given in EmitFPRSqrtStepFused.
code.vmovaps(mask, GetVectorOf<fsize, fsize == 32 ? 0x7f000000 : 0x7fe0000000000000>(code));
FCODE(vandp)(tmp, result, mask);
if constexpr (fsize == 32) {
code.vpcmpeqd(tmp, tmp, mask);
} else {
code.vpcmpeqq(tmp, tmp, mask);
}
ICODE(vpcmpeq)(tmp, tmp, mask);
code.ptest(tmp, tmp);
code.jnz(fallback, code.T_NEAR);
@ -1517,11 +1517,7 @@ void EmitFPVectorToFixed(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
FCODE(andp)(tmp, xmm0);
FCODE(subp)(src, tmp);
perform_conversion(src);
if constexpr (fsize == 32) {
code.pslld(xmm0, 31);
} else {
code.psllq(xmm0, 63);
}
ICODE(psll)(xmm0, static_cast<u8>(fsize - 1));
FCODE(orp)(src, xmm0);
// Saturate to max