diff --git a/src/backend_x64/emit_x64_vector.cpp b/src/backend_x64/emit_x64_vector.cpp index 89cba28b..9906ea57 100644 --- a/src/backend_x64/emit_x64_vector.cpp +++ b/src/backend_x64/emit_x64_vector.cpp @@ -1145,9 +1145,27 @@ void EmitX64::EmitVectorMinU32(EmitContext& ctx, IR::Inst* inst) { return; } - EmitTwoArgumentFallback(code, ctx, inst, [](std::array& result, const std::array& a, const std::array& b){ - std::transform(a.begin(), a.end(), b.begin(), result.begin(), [](auto x, auto y) { return std::min(x, y); }); - }); + auto args = ctx.reg_alloc.GetArgumentInfo(inst); + const Xbyak::Xmm a = ctx.reg_alloc.UseScratchXmm(args[0]); + const Xbyak::Xmm b = ctx.reg_alloc.UseXmm(args[1]); + + const Xbyak::Xmm sint_max_plus_one = ctx.reg_alloc.ScratchXmm(); + code.movdqa(sint_max_plus_one, code.MConst(xword, 0x8000000080000000, 0x8000000080000000)); + + const Xbyak::Xmm tmp_a = ctx.reg_alloc.ScratchXmm(); + code.movdqa(tmp_a, a); + code.psubd(tmp_a, sint_max_plus_one); + + const Xbyak::Xmm tmp_b = ctx.reg_alloc.ScratchXmm(); + code.movdqa(tmp_b, b); + code.psubd(tmp_b, sint_max_plus_one); + + code.pcmpgtd(tmp_b, tmp_a); + code.pand(a, tmp_b); + code.pandn(tmp_b, b); + code.por(a, tmp_b); + + ctx.reg_alloc.DefineValue(inst, a); } void EmitX64::EmitVectorMinU64(EmitContext& ctx, IR::Inst* inst) {