diff options
| author | Justin Lebar <jlebar@google.com> | 2016-05-23 20:19:56 +0000 |
|---|---|---|
| committer | Justin Lebar <jlebar@google.com> | 2016-05-23 20:19:56 +0000 |
| commit | 91f6f07bb88fd39be8b5e0fd2fdf12903316c662 (patch) | |
| tree | 4b5dec7b7f5da854be2c0db872c00adb954bfa3a /clang/lib/Frontend/InitPreprocessor.cpp | |
| parent | 66a891962b3dd66cff48aa27a613e17a3ecae389 (diff) | |
| download | bcm5719-llvm-91f6f07bb88fd39be8b5e0fd2fdf12903316c662.tar.gz bcm5719-llvm-91f6f07bb88fd39be8b5e0fd2fdf12903316c662.zip | |
[CUDA] Add -fcuda-approx-transcendentals flag.
Summary:
This lets us emit e.g. sin.approx.f32. See
http://docs.nvidia.com/cuda/parallel-thread-execution/#floating-point-instructions-sin
Reviewers: rnk
Subscribers: tra, cfe-commits
Differential Revision: http://reviews.llvm.org/D20493
llvm-svn: 270484
Diffstat (limited to 'clang/lib/Frontend/InitPreprocessor.cpp')
| -rw-r--r-- | clang/lib/Frontend/InitPreprocessor.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp index 5d38d5f9503..f8b407ba264 100644 --- a/clang/lib/Frontend/InitPreprocessor.cpp +++ b/clang/lib/Frontend/InitPreprocessor.cpp @@ -938,6 +938,12 @@ static void InitializePredefinedMacros(const TargetInfo &TI, Builder.defineMacro("__CUDA_ARCH__"); } + // We need to communicate this to our CUDA header wrapper, which in turn + // informs the proper CUDA headers of this choice. + if (LangOpts.CUDADeviceApproxTranscendentals || LangOpts.FastMath) { + Builder.defineMacro("__CLANG_CUDA_APPROX_TRANSCENDENTALS__"); + } + // OpenCL definitions. if (LangOpts.OpenCL) { #define OPENCLEXT(Ext) \ |
