diff options
| author | Gheorghe-Teodor Bercea <gheorghe-teod.bercea@ibm.com> | 2019-01-09 20:38:35 +0000 |
|---|---|---|
| committer | Gheorghe-Teodor Bercea <gheorghe-teod.bercea@ibm.com> | 2019-01-09 20:38:35 +0000 |
| commit | 8bc98c731f0aebcd14b5e78deeb9a8cbfa4b93e6 (patch) | |
| tree | b308663bd72b833d25fa615e14aef1ff214a2e6b /include/clang/Basic/LangOptions.def | |
| parent | 0aa94314808bdeedcdecfc97444b0f96ef59b72c (diff) | |
[OpenMP] Add flag for preventing the extension to 64 bits for the collapse loop counter
Summary: Introduce a compiler flag for cases when the user knows that the collapsed loop counter can be safely represented using at most 32 bits. This will prevent the emission of expensive mathematical operations (such as the div operation) on the iteration variable using 64 bits where 32 bit operations are sufficient.
Reviewers: ABataev, caomhin
Reviewed By: ABataev
Subscribers: hfinkel, kkwli0, guansong, cfe-commits
Differential Revision: https://reviews.llvm.org/D55928
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@350758 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/clang/Basic/LangOptions.def')
| -rw-r--r-- | include/clang/Basic/LangOptions.def | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/clang/Basic/LangOptions.def b/include/clang/Basic/LangOptions.def index 512baa463b..49961856c9 100644 --- a/include/clang/Basic/LangOptions.def +++ b/include/clang/Basic/LangOptions.def @@ -207,6 +207,7 @@ LANGOPT(OpenMPCUDAForceFullRuntime , 1, 0, "Force to use full runtime in all con LANGOPT(OpenMPHostCXXExceptions , 1, 0, "C++ exceptions handling in the host code.") LANGOPT(OpenMPCUDANumSMs , 32, 0, "Number of SMs for CUDA devices.") LANGOPT(OpenMPCUDABlocksPerSM , 32, 0, "Number of blocks per SM for CUDA devices.") +LANGOPT(OpenMPOptimisticCollapse , 1, 0, "Use at most 32 bits to represent the collapsed loop nest counter.") LANGOPT(RenderScript , 1, 0, "RenderScript") LANGOPT(CUDAIsDevice , 1, 0, "compiling for CUDA device") |