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| author |  Derek Mauro <dmauro@google.com> | 2022-11-23 11:38:14 -0800 |
|---|---|---|
| committer |  Copybara-Service <copybara-worker@google.com> | 2022-11-23 11:38:58 -0800 |
| commit | c2e9ce1d07116432c64fbc2f4e0328d387ad6a1c (patch) | |
| tree | 1e42b45b55bf645d7b5480d681a571ef560715d5 /absl/crc/internal/crc_x86_arm_combined.cc | |
| parent | 4c5eb49d6aababb86d35a40c1a606b11c5bb554f (diff) | |
CRC: Get CPU detection and hardware acceleration working on MSVC x86(_64)
Using /arch:AVX on MSVC now uses the accelerated implementation
PiperOrigin-RevId: 490550573
Change-Id: I924259845f38ee41d15f23f95ad085ad664642b5
Diffstat (limited to 'absl/crc/internal/crc_x86_arm_combined.cc')
| -rw-r--r-- | absl/crc/internal/crc_x86_arm_combined.cc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/absl/crc/internal/crc_x86_arm_combined.cc b/absl/crc/internal/crc_x86_arm_combined.cc index 06f9c69c..d771a786 100644 --- a/absl/crc/internal/crc_x86_arm_combined.cc +++ b/absl/crc/internal/crc_x86_arm_combined.cc @@ -35,6 +35,9 @@ #define ABSL_INTERNAL_CAN_USE_SIMD_CRC32C #elif defined(__SSE4_2__) && defined(__PCLMUL__) #define ABSL_INTERNAL_CAN_USE_SIMD_CRC32C +#elif defined(_MSC_VER) && defined(__AVX__) +// MSVC AVX support (/arch:AVX) implies SSE 4.2 and PCLMUL support. +#define ABSL_INTERNAL_CAN_USE_SIMD_CRC32C #endif namespace absl { |