diff options
| author | Tom Stellard <thomas.stellard@amd.com> | 2012-07-18 13:39:00 -0400 |
|---|---|---|
| committer | Tom Stellard <thomas.stellard@amd.com> | 2012-07-27 17:08:07 +0000 |
| commit | e8825ce6e12a8ec6fbe1ef76fb5e8ef8eb1b1218 (patch) | |
| tree | af8b8ac6ff91c9934533c6bb52a495a23d447ad2 | |
| parent | 87272e9e2560a88352cf54d164507569ac43e502 (diff) | |
radeon/llvm: Custom lower BR_CC for SI
| -rw-r--r-- | src/gallium/drivers/radeon/SIISelLowering.cpp | 37 | ||||
| -rw-r--r-- | src/gallium/drivers/radeon/SIISelLowering.h | 4 |
2 files changed, 41 insertions, 0 deletions
diff --git a/src/gallium/drivers/radeon/SIISelLowering.cpp b/src/gallium/drivers/radeon/SIISelLowering.cpp index 9970251128a..8528f73e409 100644 --- a/src/gallium/drivers/radeon/SIISelLowering.cpp +++ b/src/gallium/drivers/radeon/SIISelLowering.cpp @@ -36,6 +36,7 @@ SITargetLowering::SITargetLowering(TargetMachine &TM) : setOperationAction(ISD::ADD, MVT::i64, Legal); setOperationAction(ISD::ADD, MVT::i32, Legal); + setOperationAction(ISD::BR_CC, MVT::i32, Custom); } MachineBasicBlock * SITargetLowering::EmitInstrWithCustomInserter( @@ -193,3 +194,39 @@ void SITargetLowering::lowerUSE_SGPR(MachineInstr *MI, addLiveIn(MI, MF, MRI, TII, newReg); } +//===----------------------------------------------------------------------===// +// Custom DAG Lowering Operations +//===----------------------------------------------------------------------===// + +SDValue SITargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const +{ + switch (Op.getOpcode()) { + default: return AMDGPUTargetLowering::LowerOperation(Op, DAG); + case ISD::BR_CC: return LowerBR_CC(Op, DAG); + } +} + +SDValue SITargetLowering::LowerBR_CC(SDValue Op, SelectionDAG &DAG) const +{ + SDValue Chain = Op.getOperand(0); + SDValue CC = Op.getOperand(1); + SDValue LHS = Op.getOperand(2); + SDValue RHS = Op.getOperand(3); + SDValue JumpT = Op.getOperand(4); + SDValue CmpValue; + SDValue Result; + CmpValue = DAG.getNode( + ISD::SETCC, + Op.getDebugLoc(), + MVT::i1, + LHS, RHS, + CC); + + Result = DAG.getNode( + AMDILISD::BRANCH_COND, + CmpValue.getDebugLoc(), + MVT::Other, Chain, + JumpT, CmpValue); + return Result; +} + diff --git a/src/gallium/drivers/radeon/SIISelLowering.h b/src/gallium/drivers/radeon/SIISelLowering.h index 4a1bc38b5f6..c14b7574652 100644 --- a/src/gallium/drivers/radeon/SIISelLowering.h +++ b/src/gallium/drivers/radeon/SIISelLowering.h @@ -37,10 +37,14 @@ class SITargetLowering : public AMDGPUTargetLowering MachineBasicBlock::iterator I, MachineRegisterInfo & MRI) const; void lowerUSE_SGPR(MachineInstr *MI, MachineFunction * MF, MachineRegisterInfo & MRI) const; + + SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG) const; + public: SITargetLowering(TargetMachine &tm); virtual MachineBasicBlock * EmitInstrWithCustomInserter(MachineInstr * MI, MachineBasicBlock * BB) const; + virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const; }; } // End namespace llvm |