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| author | Melanie Blower <melanie.blower@intel.com> | 2021-06-07 09:34:09 -0400 |
|---|---|---|
| committer | Melanie Blower <melanie.blower@intel.com> | 2021-06-28 12:26:52 -0400 |
| commit | 931e95687d6df71aa8a33376fd2d566c8153be24 (patch) | |
| tree | d74696028652980a130bee85c0a9b06c28f29d65 /llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | |
| parent | f32f3db9fcbf43b1a603c5da882557ebed62f1c5 (diff) | |
| download | llvm-931e95687d6df71aa8a33376fd2d566c8153be24.zip llvm-931e95687d6df71aa8a33376fd2d566c8153be24.tar.gz llvm-931e95687d6df71aa8a33376fd2d566c8153be24.tar.bz2 | |
[llvm][clang][fpenv] Create new intrinsic llvm.arith.fence to control FP optimization at expression level
This intrinsic blocks floating point transformations by the optimizer.
Author: Pengfei
Reviewed By: LuoYuanke, Andy Kaylor, Craig Topper, kpn
Differential Revision: https://reviews.llvm.org/D99675
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index b63246a..0774c7f 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -6292,6 +6292,12 @@ void SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, getValue(I.getArgOperand(0)), getValue(I.getArgOperand(1)), Flags)); return; + case Intrinsic::arithmetic_fence: { + setValue(&I, DAG.getNode(ISD::ARITH_FENCE, sdl, + getValue(I.getArgOperand(0)).getValueType(), + getValue(I.getArgOperand(0)), Flags)); + return; + } case Intrinsic::fma: setValue(&I, DAG.getNode( ISD::FMA, sdl, getValue(I.getArgOperand(0)).getValueType(), |