diff options
Diffstat (limited to 'gnu/llvm/compiler-rt/lib/scudo/standalone/checksum.h')
| -rw-r--r-- | gnu/llvm/compiler-rt/lib/scudo/standalone/checksum.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gnu/llvm/compiler-rt/lib/scudo/standalone/checksum.h b/gnu/llvm/compiler-rt/lib/scudo/standalone/checksum.h index a63b1b4f064..f8eda81fd91 100644 --- a/gnu/llvm/compiler-rt/lib/scudo/standalone/checksum.h +++ b/gnu/llvm/compiler-rt/lib/scudo/standalone/checksum.h @@ -12,12 +12,17 @@ #include "internal_defs.h" // Hardware CRC32 is supported at compilation via the following: -// - for i386 & x86_64: -msse4.2 +// - for i386 & x86_64: -mcrc32 (earlier: -msse4.2) // - for ARM & AArch64: -march=armv8-a+crc or -mcrc // An additional check must be performed at runtime as well to make sure the // emitted instructions are valid on the target host. -#ifdef __SSE4_2__ +#if defined(__CRC32__) +// NB: clang has <crc32intrin.h> but GCC does not +#include <smmintrin.h> +#define CRC32_INTRINSIC \ + FIRST_32_SECOND_64(__builtin_ia32_crc32si, __builtin_ia32_crc32di) +#elif defined(__SSE4_2__) #include <smmintrin.h> #define CRC32_INTRINSIC FIRST_32_SECOND_64(_mm_crc32_u32, _mm_crc32_u64) #endif |