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emit_x64_vector_saturation: AVX implementation of EmitVectorSignedSaturated

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This commit is contained in:
Merry 2021-05-28 15:25:37 +01:00
parent 56e3bf57d2
commit bbffae2f96
1 changed files with 44 additions and 25 deletions
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69
src/dynarmic/backend/x64/emit_x64_vector_saturation.cpp
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@ -75,26 +75,25 @@ void EmitVectorSignedSaturated(BlockOfCode& code, EmitContext& ctx, IR::Inst* in
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(args[0]);
const Xbyak::Xmm arg = ctx.reg_alloc.UseXmm(args[1]);
const Xbyak::Xmm tmp = ctx.reg_alloc.ScratchXmm();
const Xbyak::Reg8 overflow = ctx.reg_alloc.ScratchGpr().cvt8();
code.movaps(tmp, result);
if (code.HasHostFeature(HostFeature::AVX512_Ortho | HostFeature::AVX512DQ)) {
if constexpr (op == Op::Add) {
ICODE(vpadd)(result, result, arg);
code.vpternlogd(tmp, result, arg, 0b00100100);
} else {
ICODE(vpsub)(result, result, arg);
code.vpternlogd(tmp, result, arg, 0b00011000);
}
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();
const Xbyak::Reg8 overflow = ctx.reg_alloc.ScratchGpr().cvt8();
if constexpr (esize == 32) {
code.vpmovd2m(k1, tmp);
code.movaps(xmm0, operand1);
if constexpr (op == Op::Add) {
ICODE(vpadd)(result, operand1, operand2);
code.vpternlogd(xmm0, result, operand2, 0b00100100);
} else {
code.vpmovq2m(k1, tmp);
ICODE(vpsub)(result, operand1, operand2);
code.vpternlogd(xmm0, result, operand2, 0b00011000);
}
if constexpr (esize == 32) {
code.vpmovd2m(k1, xmm0);
} else {
code.vpmovq2m(k1, xmm0);
}
ICODE(vpsra)(result | k1, result, u8(esize - 1));
ICODE(vpxor)(result | k1, result, code.MConst(xword_b, msb_mask, msb_mask));
@ -107,24 +106,44 @@ void EmitVectorSignedSaturated(BlockOfCode& code, EmitContext& ctx, IR::Inst* in
return;
}
code.movaps(xmm0, result);
const Xbyak::Xmm operand1 = code.HasHostFeature(HostFeature::AVX) ? ctx.reg_alloc.UseXmm(args[0]) : ctx.reg_alloc.UseScratchXmm(args[0]);
const Xbyak::Xmm operand2 = ctx.reg_alloc.UseXmm(args[1]);
const Xbyak::Xmm result = code.HasHostFeature(HostFeature::AVX) ? ctx.reg_alloc.ScratchXmm() : operand1;
const Xbyak::Reg8 overflow = ctx.reg_alloc.ScratchGpr().cvt8();
const Xbyak::Xmm tmp = ctx.reg_alloc.ScratchXmm();
if constexpr (op == Op::Add) {
ICODE(padd)(result, arg);
if (code.HasHostFeature(HostFeature::AVX)) {
if constexpr (op == Op::Add) {
ICODE(vpadd)(result, operand1, operand2);
} else {
ICODE(vpsub)(result, operand1, operand2);
}
code.vpxor(xmm0, operand1, operand2);
code.vpxor(tmp, operand1, result);
} else {
ICODE(psub)(result, arg);
code.movaps(xmm0, operand1);
code.movaps(tmp, operand1);
if constexpr (op == Op::Add) {
ICODE(padd)(result, operand2);
} else {
ICODE(psub)(result, operand2);
}
code.pxor(xmm0, operand2);
code.pxor(tmp, result);
}
code.pxor(tmp, result);
code.pxor(xmm0, arg);
if constexpr (op == Op::Add) {
code.pandn(xmm0, tmp);
} else {
code.pand(xmm0, tmp);
}
code.movaps(tmp, result);
code.psrad(tmp, 31);
if (code.HasHostFeature(HostFeature::AVX)) {
code.vpsrad(tmp, result, 31);
} else {
code.movaps(tmp, result);
code.psrad(tmp, 31);
}
if constexpr (esize == 64) {
code.pshufd(tmp, tmp, 0b11110101);
}