================
@@ -494,10 +520,10 @@ _mm_adds_pu16(__m64 __m1, __m64 __m2)
/// A 64-bit integer vector of [8 x i8] containing the subtrahends.
/// \returns A 64-bit integer vector of [8 x i8] containing the differences of
/// both parameters.
-static __inline__ __m64 __DEFAULT_FN_ATTRS
+static __inline__ __m64 __DEFAULT_FN_ATTRS_SSE2
_mm_sub_pi8(__m64 __m1, __m64 __m2)
{
- return (__m64)__builtin_ia32_psubb((__v8qi)__m1, (__v8qi)__m2);
+ return (__m64)(((__v8qu)__m1) - ((__v8qu)__m2));
----------------
phoebewang wrote:
Seems you intended to use unsigned version. What's the reason to do so?
https://github.com/llvm/llvm-project/pull/96540
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