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emit_x64_vector: Fix 64-bit TBL (zext table input)

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This commit is contained in:
Merry 2023-01-20 02:03:52 +00:00
parent 7fb7352f55
commit c0813cf2a5
1 changed files with 17 additions and 7 deletions
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22
src/dynarmic/backend/x64/emit_x64_vector.cpp
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@ -4622,16 +4622,26 @@ void EmitX64::EmitVectorTableLookup64(EmitContext& ctx, IR::Inst* inst) {
0x6060606060606060,
};
if (code.HasHostFeature(HostFeature::SSSE3) && is_defaults_zero && table_size <= 2) {
if (code.HasHostFeature(HostFeature::SSSE3) && is_defaults_zero && table_size == 1) {
const Xbyak::Xmm indicies = ctx.reg_alloc.UseScratchXmm(args[2]);
const Xbyak::Xmm xmm_table0 = ctx.reg_alloc.UseScratchXmm(table[0]);
const Xbyak::Xmm xmm_table0 = ctx.reg_alloc.UseXmm(table[0]);
const Xbyak::Xmm result = ctx.reg_alloc.ScratchXmm();
if (table_size == 2) {
const Xbyak::Xmm xmm_table0_upper = ctx.reg_alloc.UseXmm(table[1]);
code.punpcklqdq(xmm_table0, xmm_table0_upper);
ctx.reg_alloc.Release(xmm_table0_upper);
code.xorps(result, result);
code.movsd(result, xmm_table0);
code.paddusb(indicies, code.MConst(xword, 0x7070707070707070, 0xFFFFFFFFFFFFFFFF));
code.pshufb(result, indicies);
ctx.reg_alloc.DefineValue(inst, result);
return;
}
if (code.HasHostFeature(HostFeature::SSSE3) && is_defaults_zero && table_size == 2) {
const Xbyak::Xmm indicies = ctx.reg_alloc.UseScratchXmm(args[2]);
const Xbyak::Xmm xmm_table0 = ctx.reg_alloc.UseScratchXmm(table[0]);
const Xbyak::Xmm xmm_table0_upper = ctx.reg_alloc.UseXmm(table[1]);
code.punpcklqdq(xmm_table0, xmm_table0_upper);
code.paddusb(indicies, code.MConst(xword, 0x7070707070707070, 0xFFFFFFFFFFFFFFFF));
code.pshufb(xmm_table0, indicies);