diff options
| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2017-01-23 19:08:34 +0000 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2017-01-23 19:08:34 +0000 |
| commit | 7b49ad74edf0da4d806c72da5cb568448465f37e (patch) | |
| tree | 1cbf1a3e0c6d30344c6bb673793ac882625d6f4e | |
| parent | 617a1994d944ae3151c23bff1f89b56705774257 (diff) | |
| download | bcm5719-llvm-7b49ad74edf0da4d806c72da5cb568448465f37e.tar.gz bcm5719-llvm-7b49ad74edf0da4d806c72da5cb568448465f37e.zip | |
AMDGPU: Propagate fast math flags in fneg combines
Can't for fma/mad since it seems they can't have flags currently.
llvm-svn: 292818
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp b/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp index 54caa2c5dfa..d92178328ff 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp @@ -2872,7 +2872,7 @@ SDValue AMDGPUTargetLowering::performFNegCombine(SDNode *N, else RHS = RHS.getOperand(0); - SDValue Res = DAG.getNode(ISD::FADD, SL, VT, LHS, RHS); + SDValue Res = DAG.getNode(ISD::FADD, SL, VT, LHS, RHS, N0->getFlags()); if (!N0.hasOneUse()) DAG.ReplaceAllUsesWith(N0, DAG.getNode(ISD::FNEG, SL, VT, Res)); return Res; @@ -2891,7 +2891,7 @@ SDValue AMDGPUTargetLowering::performFNegCombine(SDNode *N, else RHS = DAG.getNode(ISD::FNEG, SL, VT, RHS); - SDValue Res = DAG.getNode(Opc, SL, VT, LHS, RHS); + SDValue Res = DAG.getNode(Opc, SL, VT, LHS, RHS, N0->getFlags()); if (!N0.hasOneUse()) DAG.ReplaceAllUsesWith(N0, DAG.getNode(ISD::FNEG, SL, VT, Res)); return Res; @@ -2941,7 +2941,7 @@ SDValue AMDGPUTargetLowering::performFNegCombine(SDNode *N, // (fneg (fp_extend x)) -> (fp_extend (fneg x)) // (fneg (rcp x)) -> (rcp (fneg x)) SDValue Neg = DAG.getNode(ISD::FNEG, SL, CvtSrc.getValueType(), CvtSrc); - return DAG.getNode(Opc, SL, VT, Neg); + return DAG.getNode(Opc, SL, VT, Neg, N0->getFlags()); } case ISD::FP_ROUND: { SDValue CvtSrc = N0.getOperand(0); |
