diff options
Diffstat (limited to 'llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp b/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp index a450d0622f5..774810e2e01 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp @@ -157,6 +157,7 @@ private: SDValue &Omod) const; void SelectADD_SUB_I64(SDNode *N); + void SelectUADDO_USUBO(SDNode *N); void SelectDIV_SCALE(SDNode *N); void SelectFMA_W_CHAIN(SDNode *N); void SelectFMUL_W_CHAIN(SDNode *N); @@ -319,6 +320,11 @@ void AMDGPUDAGToDAGISel::Select(SDNode *N) { SelectADD_SUB_I64(N); return; } + case ISD::UADDO: + case ISD::USUBO: { + SelectUADDO_USUBO(N); + return; + } case AMDGPUISD::FMUL_W_CHAIN: { SelectFMUL_W_CHAIN(N); return; @@ -689,6 +695,17 @@ void AMDGPUDAGToDAGISel::SelectADD_SUB_I64(SDNode *N) { CurDAG->RemoveDeadNode(N); } +void AMDGPUDAGToDAGISel::SelectUADDO_USUBO(SDNode *N) { + // The name of the opcodes are misleading. v_add_i32/v_sub_i32 have unsigned + // carry out despite the _i32 name. These were renamed in VI to _U32. + // FIXME: We should probably rename the opcodes here. + unsigned Opc = N->getOpcode() == ISD::UADDO ? + AMDGPU::V_ADD_I32_e64 : AMDGPU::V_SUB_I32_e64; + + CurDAG->SelectNodeTo(N, Opc, N->getVTList(), + { N->getOperand(0), N->getOperand(1) }); +} + void AMDGPUDAGToDAGISel::SelectFMA_W_CHAIN(SDNode *N) { SDLoc SL(N); // src0_modifiers, src0, src1_modifiers, src1, src2_modifiers, src2, clamp, omod |
