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ir/frontend: Add half-precision opcode for FPVectorMulAdd

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Lioncash 2019-04-13 01:42:35 -04:00 • committed by MerryMage
parent 5f74d25bf7
commit ec6b3ae084
4 changed files with 37 additions and 27 deletions
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60
src/backend/x64/emit_x64_vector_floating_point.cpp
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@ -908,44 +908,50 @@ void EmitFPVectorMulAdd(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst) {
}
};
if (code.DoesCpuSupport(Xbyak::util::Cpu::tFMA) && code.DoesCpuSupport(Xbyak::util::Cpu::tAVX)) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
if constexpr (fsize != 16) {
if (code.DoesCpuSupport(Xbyak::util::Cpu::tFMA) && code.DoesCpuSupport(Xbyak::util::Cpu::tAVX)) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const Xbyak::Xmm result = ctx.reg_alloc.ScratchXmm();
const Xbyak::Xmm xmm_a = ctx.reg_alloc.UseXmm(args[0]);
const Xbyak::Xmm xmm_b = ctx.reg_alloc.UseXmm(args[1]);
const Xbyak::Xmm xmm_c = ctx.reg_alloc.UseXmm(args[2]);
const Xbyak::Xmm tmp = ctx.reg_alloc.ScratchXmm();
const Xbyak::Xmm result = ctx.reg_alloc.ScratchXmm();
const Xbyak::Xmm xmm_a = ctx.reg_alloc.UseXmm(args[0]);
const Xbyak::Xmm xmm_b = ctx.reg_alloc.UseXmm(args[1]);
const Xbyak::Xmm xmm_c = ctx.reg_alloc.UseXmm(args[2]);
const Xbyak::Xmm tmp = ctx.reg_alloc.ScratchXmm();
Xbyak::Label end, fallback;
Xbyak::Label end, fallback;
code.movaps(result, xmm_a);
FCODE(vfmadd231p)(result, xmm_b, xmm_c);
code.movaps(result, xmm_a);
FCODE(vfmadd231p)(result, xmm_b, xmm_c);
code.movaps(tmp, GetNegativeZeroVector<fsize>(code));
code.andnps(tmp, result);
FCODE(vcmpeq_uqp)(tmp, tmp, GetSmallestNormalVector<fsize>(code));
code.vptest(tmp, tmp);
code.jnz(fallback, code.T_NEAR);
code.L(end);
code.movaps(tmp, GetNegativeZeroVector<fsize>(code));
code.andnps(tmp, result);
FCODE(vcmpeq_uqp)(tmp, tmp, GetSmallestNormalVector<fsize>(code));
code.vptest(tmp, tmp);
code.jnz(fallback, code.T_NEAR);
code.L(end);
code.SwitchToFarCode();
code.L(fallback);
code.sub(rsp, 8);
ABI_PushCallerSaveRegistersAndAdjustStackExcept(code, HostLocXmmIdx(result.getIdx()));
EmitFourOpFallbackWithoutRegAlloc(code, ctx, result, xmm_a, xmm_b, xmm_c, fallback_fn);
ABI_PopCallerSaveRegistersAndAdjustStackExcept(code, HostLocXmmIdx(result.getIdx()));
code.add(rsp, 8);
code.jmp(end, code.T_NEAR);
code.SwitchToNearCode();
code.SwitchToFarCode();
code.L(fallback);
code.sub(rsp, 8);
ABI_PushCallerSaveRegistersAndAdjustStackExcept(code, HostLocXmmIdx(result.getIdx()));
EmitFourOpFallbackWithoutRegAlloc(code, ctx, result, xmm_a, xmm_b, xmm_c, fallback_fn);
ABI_PopCallerSaveRegistersAndAdjustStackExcept(code, HostLocXmmIdx(result.getIdx()));
code.add(rsp, 8);
code.jmp(end, code.T_NEAR);
code.SwitchToNearCode();
ctx.reg_alloc.DefineValue(inst, result);
return;
ctx.reg_alloc.DefineValue(inst, result);
return;
}
}
EmitFourOpFallback(code, ctx, inst, fallback_fn);
}
void EmitX64::EmitFPVectorMulAdd16(EmitContext& ctx, IR::Inst* inst) {
EmitFPVectorMulAdd<16>(code, ctx, inst);
}
void EmitX64::EmitFPVectorMulAdd32(EmitContext& ctx, IR::Inst* inst) {
EmitFPVectorMulAdd<32>(code, ctx, inst);
}