[Openmp-commits] [PATCH] D95058: [OpenMP][NVPTX] Added forward declaration to pave the way for building deviceRTLs with OpenMP

[Shilei Tian via Phabricator via Openmp-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rG33a5d212c619: [OpenMP][NVPTX] Added forward declaration to pave the way for building… (authored by tianshilei1992).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D95058/new/

https://reviews.llvm.org/D95058

Files:
  openmp/libomptarget/deviceRTLs/nvptx/src/target_impl.cu


Index: openmp/libomptarget/deviceRTLs/nvptx/src/target_impl.cu
===================================================================
--- openmp/libomptarget/deviceRTLs/nvptx/src/target_impl.cu
+++ openmp/libomptarget/deviceRTLs/nvptx/src/target_impl.cu
@@ -16,6 +16,23 @@
 
 #include <cuda.h>
 
+// Forward declaration of CUDA primitives which will be evetually transformed
+// into LLVM intrinsics.
+extern "C" {
+unsigned int __activemask();
+unsigned int __ballot(unsigned);
+// The default argument here is based on NVIDIA's website
+// https://developer.nvidia.com/blog/using-cuda-warp-level-primitives/
+int __shfl_sync(unsigned mask, int val, int src_line, int width = WARPSIZE);
+int __shfl(int val, int src_line, int width = WARPSIZE);
+int __shfl_down(int var, unsigned detla, int width);
+int __shfl_down_sync(unsigned mask, int var, unsigned detla, int width);
+void __syncwarp(int mask);
+void __threadfence();
+void __threadfence_block();
+void __threadfence_system();
+}
+
 DEVICE void __kmpc_impl_unpack(uint64_t val, uint32_t &lo, uint32_t &hi) {
   asm volatile("mov.b64 {%0,%1}, %2;" : "=r"(lo), "=r"(hi) : "l"(val));
 }


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