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[OpenMP][NVPTX] Added the missing -O1 when building NVPTX bitcode libraries

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In the past `-O1` was used when building NVPTX bitcode libraries. After
we switched to OpenMP, `-O1` was missing by mistake, leading to a huge performance
regression.

Reviewed By: JonChesterfield

Differential Revision: https://reviews.llvm.org/D95545
This commit is contained in:
Shilei Tian 2021-01-28 08:13:28 -05:00
parent 19248d30e4
commit 5a64794bba
1 changed files with 8 additions and 8 deletions
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16
openmp/libomptarget/deviceRTLs/nvptx/CMakeLists.txt
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@ -126,14 +126,14 @@ set(cuda_src_files
)
# Set flags for LLVM Bitcode compilation.
set(bc_flags -S -x c++
-target nvptx64
-Xclang -emit-llvm-bc
-Xclang -aux-triple -Xclang ${aux_triple}
-fopenmp -fopenmp-cuda-mode -Xclang -fopenmp-is-device
-D__CUDACC__
-I${devicertl_base_directory}
-I${devicertl_nvptx_directory}/src)
set(bc_flags -S -x c++ -O1 -std=c++14
-target nvptx64
-Xclang -emit-llvm-bc
-Xclang -aux-triple -Xclang ${aux_triple}
-fopenmp -fopenmp-cuda-mode -Xclang -fopenmp-is-device
-D__CUDACC__
-I${devicertl_base_directory}
-I${devicertl_nvptx_directory}/src)
if(${LIBOMPTARGET_NVPTX_DEBUG})
list(APPEND bc_flags -DOMPTARGET_NVPTX_DEBUG=-1)