diff options
Diffstat (limited to 'lib/Target/Sparc')
| -rw-r--r-- | lib/Target/Sparc/SparcISelDAGToDAG.cpp | 55 |
1 files changed, 18 insertions, 37 deletions
diff --git a/lib/Target/Sparc/SparcISelDAGToDAG.cpp b/lib/Target/Sparc/SparcISelDAGToDAG.cpp index 6fddeca4ba..c5b282db6c 100644 --- a/lib/Target/Sparc/SparcISelDAGToDAG.cpp +++ b/lib/Target/Sparc/SparcISelDAGToDAG.cpp @@ -66,11 +66,6 @@ namespace { virtual SDOperand LowerReturnTo(SDOperand Chain, SDOperand Op, SelectionDAG &DAG); - virtual SDOperand LowerVAStart(SDOperand Chain, SDOperand VAListP, - Value *VAListV, SelectionDAG &DAG); - virtual std::pair<SDOperand,SDOperand> - LowerVAArg(SDOperand Chain, SDOperand VAListP, Value *VAListV, - const Type *ArgTy, SelectionDAG &DAG); virtual std::pair<SDOperand, SDOperand> LowerFrameReturnAddress(bool isFrameAddr, SDOperand Chain, unsigned Depth, SelectionDAG &DAG); @@ -161,9 +156,15 @@ SparcV8TargetLowering::SparcV8TargetLowering(TargetMachine &TM) setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand); setOperationAction(ISD::DEBUG_LABEL, MVT::Other, Expand); - // Expand these to their default code. - setOperationAction(ISD::STACKSAVE, MVT::Other, Expand); - setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand); + // VASTART needs to be custom lowered to use the VarArgsFrameIndex + setOperationAction(ISD::VASTART , MVT::Other, Custom); + + // Use the default implementation. + setOperationAction(ISD::VAARG , MVT::Other, Expand); + setOperationAction(ISD::VACOPY , MVT::Other, Expand); + setOperationAction(ISD::VAEND , MVT::Other, Expand); + setOperationAction(ISD::STACKSAVE , MVT::Other, Expand); + setOperationAction(ISD::STACKRESTORE , MVT::Other, Expand); setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32, Expand); setSchedulingPreference(SchedulingForLatency); @@ -602,35 +603,6 @@ SDOperand SparcV8TargetLowering::LowerReturnTo(SDOperand Chain, SDOperand Op, return DAG.getNode(V8ISD::RET_FLAG, MVT::Other, Copy, Copy.getValue(1)); } -SDOperand SparcV8TargetLowering:: -LowerVAStart(SDOperand Chain, SDOperand VAListP, Value *VAListV, - SelectionDAG &DAG) { - - SDOperand Offset = DAG.getNode(ISD::ADD, MVT::i32, - DAG.getRegister(V8::I6, MVT::i32), - DAG.getConstant(VarArgsFrameOffset, MVT::i32)); - return DAG.getNode(ISD::STORE, MVT::Other, Chain, Offset, - VAListP, DAG.getSrcValue(VAListV)); -} - -std::pair<SDOperand,SDOperand> SparcV8TargetLowering:: -LowerVAArg(SDOperand Chain, SDOperand VAListP, Value *VAListV, - const Type *ArgTy, SelectionDAG &DAG) { - // Load the pointer out of the valist. - SDOperand Ptr = DAG.getLoad(MVT::i32, Chain, - VAListP, DAG.getSrcValue(VAListV)); - MVT::ValueType ArgVT = getValueType(ArgTy); - SDOperand Val = DAG.getLoad(ArgVT, Ptr.getValue(1), - Ptr, DAG.getSrcValue(NULL)); - // Increment the pointer. - Ptr = DAG.getNode(ISD::ADD, MVT::i32, Ptr, - DAG.getConstant(MVT::getSizeInBits(ArgVT)/8, MVT::i32)); - // Store it back to the valist. - Chain = DAG.getNode(ISD::STORE, MVT::Other, Chain, Ptr, - VAListP, DAG.getSrcValue(VAListV)); - return std::make_pair(Val, Chain); -} - std::pair<SDOperand, SDOperand> SparcV8TargetLowering:: LowerFrameReturnAddress(bool isFrameAddr, SDOperand Chain, unsigned Depth, SelectionDAG &DAG) { @@ -714,6 +686,15 @@ LowerOperation(SDOperand Op, SelectionDAG &DAG) { return DAG.getNode(Opc, TrueVal.getValueType(), TrueVal, FalseVal, DAG.getConstant(CC, MVT::i32), CompareFlag); } + case ISD::VASTART: { + // vastart just stores the address of the VarArgsFrameIndex slot into the + // memory location argument. + SDOperand Offset = DAG.getNode(ISD::ADD, MVT::i32, + DAG.getRegister(V8::I6, MVT::i32), + DAG.getConstant(VarArgsFrameOffset, MVT::i32)); + return DAG.getNode(ISD::STORE, MVT::Other, Op.getOperand(0), Offset, + Op.getOperand(1), Op.getOperand(2)); + } } } |