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| author | Joseph Huber <jhuber6@vols.utk.edu> | 2023-05-04 21:36:52 -0500 |
|---|---|---|
| committer | Joseph Huber <jhuber6@vols.utk.edu> | 2023-05-04 21:38:24 -0500 |
| commit | 2e93dd06134d4e71436b0aec3f668e0302b6e7ea (patch) | |
| tree | 6cedcf62764128f07199f48e09b856778116e59d /libc | |
| parent | ae1ca47bb4456c97e112b10364c65102ffe31cd0 (diff) | |
| download | llvm-2e93dd06134d4e71436b0aec3f668e0302b6e7ea.tar.gz | |
[libc] Fix hanging test on NVPTX due to lack of warp sync
Previously this wasn't implemented because it's effectively a no-op.
However, this should be safe to emit on sm_60 architectures. It's
important because it carries semantic importance for whether or not
something can be moved. So we should always emit this instrinsic.
Differential Revision: https://reviews.llvm.org/D149923
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/src/__support/GPU/nvptx/utils.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/libc/src/__support/GPU/nvptx/utils.h b/libc/src/__support/GPU/nvptx/utils.h index 9f20edf16c62..763675735a2b 100644 --- a/libc/src/__support/GPU/nvptx/utils.h +++ b/libc/src/__support/GPU/nvptx/utils.h @@ -130,11 +130,7 @@ LIBC_INLINE uint32_t get_lane_size() { return LANE_SIZE; } /// Waits for all threads in the warp to reconverge for independent scheduling. [[clang::convergent]] LIBC_INLINE void sync_lane(uint64_t mask) { -#if __CUDA_ARCH__ >= 700 __nvvm_bar_warp_sync(mask); -#else - (void)mask; -#endif } } // namespace gpu |