diff options
Diffstat (limited to 'llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp | 18 |
1 files changed, 2 insertions, 16 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp b/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp index 2b3b3fd28b4..4d55a663d48 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp @@ -1407,26 +1407,12 @@ void AMDGPUDAGToDAGISel::SelectBRCOND(SDNode *N) { return; } - // The result of VOPC instructions is or'd against ~EXEC before it is - // written to vcc or another SGPR. This means that the value '1' is always - // written to the corresponding bit for results that are masked. In order - // to correctly check against vccz, we need to and VCC with the EXEC - // register in order to clear the value from the masked bits. - SDLoc SL(N); - SDNode *MaskedCond = - CurDAG->getMachineNode(AMDGPU::S_AND_B64, SL, MVT::i1, - CurDAG->getRegister(AMDGPU::EXEC, MVT::i1), - Cond); - SDValue VCC = CurDAG->getCopyToReg(N->getOperand(0), SL, AMDGPU::VCC, - SDValue(MaskedCond, 0), - SDValue()); // Passing SDValue() adds a - // glue output. + SDValue VCC = CurDAG->getCopyToReg(N->getOperand(0), SL, AMDGPU::VCC, Cond); CurDAG->SelectNodeTo(N, AMDGPU::S_CBRANCH_VCCNZ, MVT::Other, N->getOperand(2), // Basic Block - VCC.getValue(0), // Chain - VCC.getValue(1)); // Glue + VCC.getValue(0)); return; } |
