diff options
| author | Artem Belevich <tra@google.com> | 2017-01-13 18:48:13 +0000 |
|---|---|---|
| committer | Artem Belevich <tra@google.com> | 2017-01-13 18:48:13 +0000 |
| commit | e41bb16926b81017db97ab76b45a80879865a275 (patch) | |
| tree | c0b92ca4eec727ec7c86af3fd7d00c64a5dd6730 /lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp | |
| parent | 093d956dc6acad0fcf51cc1c31bb9ce42a4bc811 (diff) | |
[NVPTX] Only lower sin/cos to approximate instructions if unsafe math is allowed.
Previously we'd always lower @llvm.{sin,cos}.f32 to {sin.cos}.approx.f32
instruction even when unsafe FP math was not allowed.
Clang-generated IR is not affected by this as it uses precise sin/cos
from CUDA's libdevice when unsafe math is disabled.
Differential Revision: https://reviews.llvm.org/D28619
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291936 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp')
| -rw-r--r-- | lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp b/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp index 43c478f4212..4f3129c0774 100644 --- a/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp +++ b/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp @@ -103,6 +103,11 @@ bool NVPTXDAGToDAGISel::allowFMA() const { return TL->allowFMA(*MF, OptLevel); } +bool NVPTXDAGToDAGISel::allowUnsafeFPMath() const { + const NVPTXTargetLowering *TL = Subtarget->getTargetLowering(); + return TL->allowUnsafeFPMath(*MF); +} + /// Select - Select instructions not customized! Used for /// expanded, promoted and normal instructions. void NVPTXDAGToDAGISel::Select(SDNode *N) { |