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| author | Artem Belevich <tra@google.com> | 2017-01-19 00:14:45 +0000 |
|---|---|---|
| committer | Artem Belevich <tra@google.com> | 2017-01-19 00:14:45 +0000 |
| commit | 3d3f6190abb92ccc5bb81e90885ab14316218ffc (patch) | |
| tree | b2544ee201063d4ea1aa9dc3f8dd88c9dbaf4799 /llvm/lib/Target/NVPTX | |
| parent | 87cdfa76357ca88e934eab9741a346045783d8df (diff) | |
| download | bcm5719-llvm-3d3f6190abb92ccc5bb81e90885ab14316218ffc.tar.gz bcm5719-llvm-3d3f6190abb92ccc5bb81e90885ab14316218ffc.zip | |
[NVPTX] Fix lowering of fp16 ISD::FNEG.
There's no neg.f16 instruction, so negation has to
be done via subtraction from zero.
Differential Revision: https://reviews.llvm.org/D28876
llvm-svn: 292452
Diffstat (limited to 'llvm/lib/Target/NVPTX')
| -rw-r--r-- | llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp b/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp index 0fd8d4b2aa7..48954fd19e5 100644 --- a/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp +++ b/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp @@ -332,6 +332,8 @@ NVPTXTargetLowering::NVPTXTargetLowering(const NVPTXTargetMachine &TM, setOperationAction(ISD::FSUB, MVT::f16, Promote); setOperationAction(ISD::FMA, MVT::f16, Promote); } + // There's no neg.f16 instruction. + setOperationAction(ISD::FNEG, MVT::f16, Expand); // Library functions. These default to Expand, but we have instructions // for them. |
