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[x64] Fix vector mask issue and add missing tests

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This commit is contained in:
Herman S.
2025-10-14 14:49:56 +09:00
parent f41ea1296b
commit 341a735142
1 changed files with 3 additions and 1 deletions
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4
src/xenia/cpu/backend/x64/x64_seq_vector.cc
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@@ -934,6 +934,7 @@ struct VECTOR_SHL_V128
e.vpmovzxbd(e.ymm2, i.src2); e.vpmovzxbd(e.ymm2, i.src2);
e.vpmovzxbd(e.ymm3, e.xmm3); e.vpmovzxbd(e.ymm3, e.xmm3);
// Mask shift counts to 3 bits (0-7) for byte shifts
e.vpbroadcastd(e.ymm4, e.GetXmmConstPtr(XMMXOPByteShiftMask)); e.vpbroadcastd(e.ymm4, e.GetXmmConstPtr(XMMXOPByteShiftMask));
e.vpand(e.ymm2, e.ymm2, e.ymm4); e.vpand(e.ymm2, e.ymm2, e.ymm4);
e.vpand(e.ymm3, e.ymm3, e.ymm4); e.vpand(e.ymm3, e.ymm3, e.ymm4);
@@ -1032,7 +1033,8 @@ struct VECTOR_SHL_V128
e.L(looper); e.L(looper);
e.movzx(e.ecx, e.byte[e.rsp + stack_offset_src2 + e.rdx]); e.movzx(e.ecx, e.byte[e.rsp + stack_offset_src2 + e.rdx]);
e.and_(e.ecx, 7); e.and_(e.cl, 7); // Mask shift count to 3 bits (0-7) for byte shifts
e.shl(e.byte[e.rsp + stack_offset_src1 + e.rdx], e.cl); e.shl(e.byte[e.rsp + stack_offset_src1 + e.rdx], e.cl);
if (e.IsFeatureEnabled(kX64FlagsIndependentVars)) { if (e.IsFeatureEnabled(kX64FlagsIndependentVars)) {