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emit_x64_vector: Improve AVX512 implementation of EmitVectorTableLookup128

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Merry 2024-01-30 00:27:19 +00:00
parent 0f20181a45
commit 85177518d7
1 changed files with 74 additions and 30 deletions
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94
src/dynarmic/backend/x64/emit_x64_vector.cpp
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@ -5132,59 +5132,103 @@ void EmitX64::EmitVectorTableLookup128(EmitContext& ctx, IR::Inst* inst) {
if (code.HasHostFeature(HostFeature::AVX512_Ortho | HostFeature::AVX512BW | HostFeature::AVX512VBMI) && table_size == 4) {
const Xbyak::Xmm indicies = ctx.reg_alloc.UseScratchXmm(args[2]);
const Xbyak::Xmm defaults = ctx.reg_alloc.UseScratchXmm(args[0]);
const Xbyak::Opmask write_mask = k1;
const Xbyak::Opmask upper_mask = k2;
code.vpcmpub(k1, indicies, code.BConst<8>(xword, 2 * 16), CmpInt::LessThan);
code.vpcmpub(k2, indicies, code.BConst<8>(xword, 4 * 16), CmpInt::LessThan);
// Handle vector-table 0,1
const Xbyak::Xmm xmm_table0 = ctx.reg_alloc.UseScratchXmm(table[0]);
const Xbyak::Xmm xmm_table1 = ctx.reg_alloc.UseScratchXmm(table[1]);
const Xbyak::Xmm xmm_table0 = ctx.reg_alloc.UseXmm(table[0]);
const Xbyak::Xmm xmm_table1 = ctx.reg_alloc.UseXmm(table[1]);
code.vptestnmb(write_mask, indicies, code.Const(xword, 0xE0E0E0E0E0E0E0E0, 0xE0E0E0E0E0E0E0E0));
code.vpermi2b(indicies | write_mask, xmm_table0, xmm_table1);
code.vpermi2b(indicies | k1, xmm_table0, xmm_table1);
ctx.reg_alloc.Release(xmm_table0);
ctx.reg_alloc.Release(xmm_table1);
// Handle vector-table 2,3
const Xbyak::Xmm xmm_table2 = ctx.reg_alloc.UseXmm(table[2]);
const Xbyak::Xmm xmm_table3 = ctx.reg_alloc.UseXmm(table[3]);
code.kandnw(k1, k1, k2);
code.vpermi2b(indicies | k1, xmm_table2, xmm_table3);
if (is_defaults_zero) {
code.vmovdqu8(defaults | write_mask | T_z, indicies);
code.vmovdqu8(indicies | k2 | T_z, indicies);
ctx.reg_alloc.DefineValue(inst, indicies);
} else {
code.vmovdqu8(defaults | write_mask, indicies);
const Xbyak::Xmm defaults = ctx.reg_alloc.UseScratchXmm(args[0]);
code.vmovdqu8(defaults | k2, indicies);
ctx.reg_alloc.DefineValue(inst, defaults);
}
return;
}
// Handle vector-table 2,3
// vpcmpuble
code.vpcmpub(upper_mask, indicies, code.Const(xword, 0x3F3F3F3F3F3F3F3F, 0x3F3F3F3F3F3F3F3F), CmpInt::LessEqual);
code.kandnw(write_mask, write_mask, upper_mask);
if (code.HasHostFeature(HostFeature::AVX512_Ortho | HostFeature::AVX512BW | HostFeature::AVX512VBMI) && table_size == 3) {
const Xbyak::Xmm indicies = ctx.reg_alloc.UseScratchXmm(args[2]);
const Xbyak::Xmm xmm_table2 = ctx.reg_alloc.UseScratchXmm(table[2]);
const Xbyak::Xmm xmm_table3 = ctx.reg_alloc.UseScratchXmm(table[3]);
code.vpcmpub(k1, indicies, code.BConst<8>(xword, 2 * 16), CmpInt::LessThan);
code.vpcmpub(k2, indicies, code.BConst<8>(xword, 3 * 16), CmpInt::LessThan);
code.vpermi2b(indicies, xmm_table2, xmm_table3);
code.vmovdqu8(defaults | write_mask, indicies);
// Handle vector-table 0,1
const Xbyak::Xmm xmm_table0 = ctx.reg_alloc.UseXmm(table[0]);
const Xbyak::Xmm xmm_table1 = ctx.reg_alloc.UseXmm(table[1]);
code.vpermi2b(indicies | k1, xmm_table0, xmm_table1);
ctx.reg_alloc.Release(xmm_table0);
ctx.reg_alloc.Release(xmm_table1);
// Handle vector-table 2
const Xbyak::Xmm xmm_table2 = ctx.reg_alloc.UseXmm(table[2]);
code.kandnw(k1, k1, k2);
code.vpermb(indicies | k1, indicies, xmm_table2);
if (is_defaults_zero) {
code.vmovdqu8(indicies | k2 | T_z, indicies);
ctx.reg_alloc.DefineValue(inst, indicies);
} else {
const Xbyak::Xmm defaults = ctx.reg_alloc.UseScratchXmm(args[0]);
code.vmovdqu8(defaults | k2, indicies);
ctx.reg_alloc.DefineValue(inst, defaults);
}
return;
}
if (code.HasHostFeature(HostFeature::AVX512_Ortho | HostFeature::AVX512BW | HostFeature::AVX512VBMI) && table_size == 2) {
const Xbyak::Xmm indicies = ctx.reg_alloc.UseScratchXmm(args[2]);
const Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(args[0]);
const Xbyak::Xmm xmm_table0 = ctx.reg_alloc.UseScratchXmm(table[0]);
const Xbyak::Xmm xmm_table1 = ctx.reg_alloc.UseScratchXmm(table[1]);
const Xbyak::Opmask write_mask = k1;
const Xbyak::Xmm xmm_table0 = ctx.reg_alloc.UseXmm(table[0]);
const Xbyak::Xmm xmm_table1 = ctx.reg_alloc.UseXmm(table[1]);
code.vptestnmb(write_mask, indicies, code.Const(xword, 0xE0E0E0E0E0E0E0E0, 0xE0E0E0E0E0E0E0E0));
code.vpermi2b(indicies, xmm_table0, xmm_table1);
code.vpcmpub(k1, indicies, code.BConst<8>(xword, 2 * 16), CmpInt::LessThan);
if (is_defaults_zero) {
code.vmovdqu8(result | write_mask | T_z, indicies);
code.vpermi2b(indicies | k1 | T_z, xmm_table0, xmm_table1);
ctx.reg_alloc.DefineValue(inst, indicies);
} else {
code.vmovdqu8(result | write_mask, indicies);
const Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(args[0]);
code.vpermi2b(indicies, xmm_table0, xmm_table1);
code.vmovdqu8(result | k1, indicies);
ctx.reg_alloc.DefineValue(inst, result);
}
return;
}
if (code.HasHostFeature(HostFeature::AVX512_Ortho | HostFeature::AVX512BW | HostFeature::AVX512VBMI) && table_size == 1) {
const Xbyak::Xmm indicies = ctx.reg_alloc.UseXmm(args[2]);
const Xbyak::Xmm xmm_table0 = ctx.reg_alloc.UseXmm(table[0]);
code.vpcmpub(k1, indicies, code.BConst<8>(xword, 1 * 16), CmpInt::LessThan);
if (is_defaults_zero) {
const Xbyak::Xmm result = ctx.reg_alloc.ScratchXmm();
code.vpermb(result | k1 | T_z, indicies, xmm_table0);
ctx.reg_alloc.DefineValue(inst, result);
} else {
const Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(args[0]);
code.vpermb(result | k1, indicies, xmm_table0);
ctx.reg_alloc.DefineValue(inst, result);
}
return;
}