[Openmp-commits] [PATCH] D102407: [libomptarget][amdgpu] Fix truncation error for partial wavefront

[Jon Chesterfield via Phabricator via Openmp-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG10de21720989: [libomptarget][amdgpu] Fix truncation error for partial wavefront (authored by JonChesterfield).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D102407/new/

https://reviews.llvm.org/D102407

Files:
  openmp/libomptarget/deviceRTLs/amdgcn/src/target_impl.hip


Index: openmp/libomptarget/deviceRTLs/amdgcn/src/target_impl.hip
===================================================================
--- openmp/libomptarget/deviceRTLs/amdgcn/src/target_impl.hip
+++ openmp/libomptarget/deviceRTLs/amdgcn/src/target_impl.hip
@@ -56,7 +56,7 @@
 {
   __atomic_thread_fence(__ATOMIC_ACQUIRE);
 
-  uint32_t num_waves = num_threads / WARPSIZE;
+  uint32_t num_waves = (num_threads + WARPSIZE - 1) / WARPSIZE;
 
   // Partial barrier implementation for amdgcn.
   // Uses two 16 bit unsigned counters. One for the number of waves to have


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