[clang] [Headers][X86] Allow MMX/SSE integer min/max intrinsics to be used in constexpr (PR #156678)
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Wed Sep 3 07:15:45 PDT 2025
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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,c -- clang/lib/Headers/emmintrin.h clang/lib/Headers/smmintrin.h clang/lib/Headers/xmmintrin.h clang/test/CodeGen/X86/builtin_test_helpers.h clang/test/CodeGen/X86/mmx-builtins.c clang/test/CodeGen/X86/sse2-builtins.c clang/test/CodeGen/X86/sse41-builtins.c
``````````
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``````````diff
diff --git a/clang/lib/Headers/emmintrin.h b/clang/lib/Headers/emmintrin.h
index 044419533..fba5c6528 100644
--- a/clang/lib/Headers/emmintrin.h
+++ b/clang/lib/Headers/emmintrin.h
@@ -2316,8 +2316,8 @@ static __inline__ __m128i __DEFAULT_FN_ATTRS _mm_madd_epi16(__m128i __a,
/// A 128-bit signed [8 x i16] vector.
/// \returns A 128-bit signed [8 x i16] vector containing the greater value of
/// each comparison.
-static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_max_epi16(__m128i __a,
- __m128i __b) {
+static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_max_epi16(__m128i __a, __m128i __b) {
return (__m128i)__builtin_elementwise_max((__v8hi)__a, (__v8hi)__b);
}
@@ -2335,8 +2335,8 @@ static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_max_epi16(__m128i __a
/// A 128-bit unsigned [16 x i8] vector.
/// \returns A 128-bit unsigned [16 x i8] vector containing the greater value of
/// each comparison.
-static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_max_epu8(__m128i __a,
- __m128i __b) {
+static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_max_epu8(__m128i __a, __m128i __b) {
return (__m128i)__builtin_elementwise_max((__v16qu)__a, (__v16qu)__b);
}
@@ -2354,8 +2354,8 @@ static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_max_epu8(__m128i __a,
/// A 128-bit signed [8 x i16] vector.
/// \returns A 128-bit signed [8 x i16] vector containing the smaller value of
/// each comparison.
-static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_min_epi16(__m128i __a,
- __m128i __b) {
+static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_min_epi16(__m128i __a, __m128i __b) {
return (__m128i)__builtin_elementwise_min((__v8hi)__a, (__v8hi)__b);
}
diff --git a/clang/lib/Headers/smmintrin.h b/clang/lib/Headers/smmintrin.h
index 8475ba678..06b3da8b4 100644
--- a/clang/lib/Headers/smmintrin.h
+++ b/clang/lib/Headers/smmintrin.h
@@ -675,8 +675,8 @@ _mm_stream_load_si128(const void *__V) {
/// \param __V2
/// A 128-bit vector of [16 x i8]
/// \returns A 128-bit vector of [16 x i8] containing the lesser values.
-static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_min_epi8(__m128i __V1,
- __m128i __V2) {
+static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_min_epi8(__m128i __V1, __m128i __V2) {
return (__m128i)__builtin_elementwise_min((__v16qs)__V1, (__v16qs)__V2);
}
@@ -693,8 +693,8 @@ static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_min_epi8(__m128i __V1
/// \param __V2
/// A 128-bit vector of [16 x i8].
/// \returns A 128-bit vector of [16 x i8] containing the greater values.
-static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_max_epi8(__m128i __V1,
- __m128i __V2) {
+static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_max_epi8(__m128i __V1, __m128i __V2) {
return (__m128i)__builtin_elementwise_max((__v16qs)__V1, (__v16qs)__V2);
}
@@ -711,8 +711,8 @@ static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_max_epi8(__m128i __V1
/// \param __V2
/// A 128-bit vector of [8 x u16].
/// \returns A 128-bit vector of [8 x u16] containing the lesser values.
-static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_min_epu16(__m128i __V1,
- __m128i __V2) {
+static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_min_epu16(__m128i __V1, __m128i __V2) {
return (__m128i)__builtin_elementwise_min((__v8hu)__V1, (__v8hu)__V2);
}
@@ -729,8 +729,8 @@ static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_min_epu16(__m128i __V
/// \param __V2
/// A 128-bit vector of [8 x u16].
/// \returns A 128-bit vector of [8 x u16] containing the greater values.
-static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_max_epu16(__m128i __V1,
- __m128i __V2) {
+static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_max_epu16(__m128i __V1, __m128i __V2) {
return (__m128i)__builtin_elementwise_max((__v8hu)__V1, (__v8hu)__V2);
}
@@ -747,8 +747,8 @@ static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_max_epu16(__m128i __V
/// \param __V2
/// A 128-bit vector of [4 x i32].
/// \returns A 128-bit vector of [4 x i32] containing the lesser values.
-static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_min_epi32(__m128i __V1,
- __m128i __V2) {
+static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_min_epi32(__m128i __V1, __m128i __V2) {
return (__m128i)__builtin_elementwise_min((__v4si)__V1, (__v4si)__V2);
}
@@ -765,8 +765,8 @@ static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_min_epi32(__m128i __V
/// \param __V2
/// A 128-bit vector of [4 x i32].
/// \returns A 128-bit vector of [4 x i32] containing the greater values.
-static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_max_epi32(__m128i __V1,
- __m128i __V2) {
+static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_max_epi32(__m128i __V1, __m128i __V2) {
return (__m128i)__builtin_elementwise_max((__v4si)__V1, (__v4si)__V2);
}
@@ -783,8 +783,8 @@ static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_max_epi32(__m128i __V
/// \param __V2
/// A 128-bit vector of [4 x u32].
/// \returns A 128-bit vector of [4 x u32] containing the lesser values.
-static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_min_epu32(__m128i __V1,
- __m128i __V2) {
+static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_min_epu32(__m128i __V1, __m128i __V2) {
return (__m128i)__builtin_elementwise_min((__v4su)__V1, (__v4su)__V2);
}
@@ -801,8 +801,8 @@ static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_min_epu32(__m128i __V
/// \param __V2
/// A 128-bit vector of [4 x u32].
/// \returns A 128-bit vector of [4 x u32] containing the greater values.
-static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR _mm_max_epu32(__m128i __V1,
- __m128i __V2) {
+static __inline__ __m128i __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_max_epu32(__m128i __V1, __m128i __V2) {
return (__m128i)__builtin_elementwise_max((__v4su)__V1, (__v4su)__V2);
}
diff --git a/clang/lib/Headers/xmmintrin.h b/clang/lib/Headers/xmmintrin.h
index 5396e0368..08f562cc3 100644
--- a/clang/lib/Headers/xmmintrin.h
+++ b/clang/lib/Headers/xmmintrin.h
@@ -2354,8 +2354,7 @@ void _mm_sfence(void);
/// A 64-bit integer vector containing one of the source operands.
/// \returns A 64-bit integer vector containing the comparison results.
static __inline__ __m64 __DEFAULT_FN_ATTRS_SSE2_CONSTEXPR
-_mm_max_pi16(__m64 __a, __m64 __b)
-{
+_mm_max_pi16(__m64 __a, __m64 __b) {
return (__m64)__builtin_elementwise_max((__v4hi)__a, (__v4hi)__b);
}
@@ -2392,8 +2391,7 @@ _mm_max_pu8(__m64 __a, __m64 __b)
/// A 64-bit integer vector containing one of the source operands.
/// \returns A 64-bit integer vector containing the comparison results.
static __inline__ __m64 __DEFAULT_FN_ATTRS_SSE2_CONSTEXPR
-_mm_min_pi16(__m64 __a, __m64 __b)
-{
+_mm_min_pi16(__m64 __a, __m64 __b) {
return (__m64)__builtin_elementwise_min((__v4hi)__a, (__v4hi)__b);
}
``````````
</details>
https://github.com/llvm/llvm-project/pull/156678
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