[OpenMP] Fix nvptx CUDA_VERSION conversion
As mentioned in PR#49250, without this patch, ptxas for CUDA 9.1 fails
in the following two tests:
- openmp/libomptarget/test/mapping/lambda_mapping.cpp
- openmp/libomptarget/test/offloading/bug49021.cpp
The error looks like:
```
ptxas /tmp/lambda_mapping-081ea9.s, line 828; error : Not a name of any known instruction: 'activemask'
```
The problem is that our cmake script converts CUDA version strings
incorrectly: 9.1 becomes 9100, but it should be 9010, as shown in
`getCudaVersion` in `clang/lib/Driver/ToolChains/Cuda.cpp`. Thus,
`openmp/libomptarget/deviceRTLs/nvptx/src/target_impl.cu`
inadvertently enables `activemask` because it apparently becomes
available in 9.2. This patch fixes the conversion.
This patch does not fix the other two tests in PR#49250.
Reviewed By: tianshilei1992
Differential Revision: https://reviews.llvm.org/D97012
GitOrigin-RevId: ef8b3b5ffd562955fbb78c72c7820cd9cd99d313
diff --git a/libomptarget/deviceRTLs/nvptx/CMakeLists.txt b/libomptarget/deviceRTLs/nvptx/CMakeLists.txt
index 5478cd3..1e64e77 100644
--- a/libomptarget/deviceRTLs/nvptx/CMakeLists.txt
+++ b/libomptarget/deviceRTLs/nvptx/CMakeLists.txt
@@ -172,7 +172,15 @@
list(GET ptx_feature_list ${itr} ptx_num)
set(cuda_flags ${sm_flags})
list(APPEND cuda_flags -Xclang -target-feature -Xclang +ptx${ptx_num})
- list(APPEND cuda_flags "-DCUDA_VERSION=${cuda_version}00")
+ if("${cuda_version}" MATCHES "^([0-9]+)([0-9])$")
+ set(cuda_version_major ${CMAKE_MATCH_1})
+ set(cuda_version_minor ${CMAKE_MATCH_2})
+ else()
+ libomptarget_error_say(
+ "Unrecognized CUDA version format: ${cuda_version}")
+ endif()
+ list(APPEND cuda_flags
+ "-DCUDA_VERSION=${cuda_version_major}0${cuda_version_minor}0")
set(bc_files "")
foreach(src ${cuda_src_files})
