[libcxx-commits] [libcxx] [libc++] Run vector instructions during constant evaluation when Clang supports it (PR #160057)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h -- libcxx/include/__algorithm/mismatch.h libcxx/include/__algorithm/simd_utils.h
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/libcxx/include/__algorithm/simd_utils.h b/libcxx/include/__algorithm/simd_utils.h
index 65317fe35..98de7a750 100644
--- a/libcxx/include/__algorithm/simd_utils.h
+++ b/libcxx/include/__algorithm/simd_utils.h
@@ -130,11 +130,11 @@ template <class _Tp, size_t _Np>
   using __mask_vec = __simd_vector<bool, _Np>;
 
 #  if _LIBCPP_HAS_CONSTEXPR_VECTORS
-#if defined(_LIBCPP_BIG_ENDIAN)
+#    if defined(_LIBCPP_BIG_ENDIAN)
   return __builtin_clzg(__builtin_convertvector(__vec, __mask_vec), static_cast<int>(_Np));
-#else
+#    else
   return __builtin_ctzg(__builtin_convertvector(__vec, __mask_vec), static_cast<int>(_Np));
-#endif
+#    endif
 #  else
 
   // This has MSan disabled du to https://llvm.org/PR85876

``````````

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https://github.com/llvm/llvm-project/pull/160057