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emit_x64_vector: AVX512 Implementation of EmitVectorNarrow{32,64}

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Includes a new test case with the XTN instruction to verify
the implementation
This commit is contained in:
Wunkolo
2021-05-13 22:30:29 -07:00
committed by merry
parent 1643e8f3c6
commit 2c0be5e18c
2 changed files with 44 additions and 4 deletions
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26
src/backend/x64/emit_x64_vector.cpp
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@@ -2084,11 +2084,20 @@ void EmitX64::EmitVectorNarrow16(EmitContext& ctx, IR::Inst* inst) {
void EmitX64::EmitVectorNarrow32(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
if (code.HasHostFeature(HostFeature::AVX512_Ortho)) {
const Xbyak::Xmm a = ctx.reg_alloc.UseXmm(args[0]);
const Xbyak::Xmm result = ctx.reg_alloc.ScratchXmm();
code.vpmovdw(result, a);
ctx.reg_alloc.DefineValue(inst, result);
return;
}
const Xbyak::Xmm a = ctx.reg_alloc.UseScratchXmm(args[0]);
const Xbyak::Xmm zeros = ctx.reg_alloc.ScratchXmm();
// TODO: AVX512F implementation
code.pxor(zeros, zeros);
if (code.HasHostFeature(HostFeature::SSE41)) {
code.pblendw(a, zeros, 0b10101010);
@@ -2104,11 +2113,20 @@ void EmitX64::EmitVectorNarrow32(EmitContext& ctx, IR::Inst* inst) {
void EmitX64::EmitVectorNarrow64(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
if (code.HasHostFeature(HostFeature::AVX512_Ortho)) {
const Xbyak::Xmm a = ctx.reg_alloc.UseXmm(args[0]);
const Xbyak::Xmm result = ctx.reg_alloc.ScratchXmm();
code.vpmovqd(result, a);
ctx.reg_alloc.DefineValue(inst, result);
return;
}
const Xbyak::Xmm a = ctx.reg_alloc.UseScratchXmm(args[0]);
const Xbyak::Xmm zeros = ctx.reg_alloc.ScratchXmm();
// TODO: AVX512F implementation
code.pxor(zeros, zeros);
code.shufps(a, zeros, 0b00001000);