diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCISelLowering.cpp | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp index fd225ccad56..abb2be67135 100644 --- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp @@ -280,8 +280,13 @@ PPCTargetLowering::PPCTargetLowering(PPCTargetMachine &TM) } else setOperationAction(ISD::VAARG, MVT::Other, Expand); + if (Subtarget->isSVR4ABI() && !isPPC64) + // VACOPY is custom lowered with the 32-bit SVR4 ABI. + setOperationAction(ISD::VACOPY , MVT::Other, Custom); + else + setOperationAction(ISD::VACOPY , MVT::Other, Expand); + // Use the default implementation. - setOperationAction(ISD::VACOPY , MVT::Other, Expand); setOperationAction(ISD::VAEND , MVT::Other, Expand); setOperationAction(ISD::STACKSAVE , MVT::Other, Expand); setOperationAction(ISD::STACKRESTORE , MVT::Other, Custom); @@ -1650,6 +1655,18 @@ SDValue PPCTargetLowering::LowerVAARG(SDValue Op, SelectionDAG &DAG, false, false, false, 0); } +SDValue PPCTargetLowering::LowerVACOPY(SDValue Op, SelectionDAG &DAG, + const PPCSubtarget &Subtarget) const { + assert(!Subtarget.isPPC64() && "LowerVACOPY is PPC32 only"); + + // We have to copy the entire va_list struct: + // 2*sizeof(char) + 2 Byte alignment + 2*sizeof(char*) = 12 Byte + return DAG.getMemcpy(Op.getOperand(0), Op, + Op.getOperand(1), Op.getOperand(2), + DAG.getConstant(12, MVT::i32), 8, false, true, + MachinePointerInfo(), MachinePointerInfo()); +} + SDValue PPCTargetLowering::LowerADJUST_TRAMPOLINE(SDValue Op, SelectionDAG &DAG) const { return Op.getOperand(0); @@ -5715,6 +5732,9 @@ SDValue PPCTargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const { case ISD::VAARG: return LowerVAARG(Op, DAG, PPCSubTarget); + case ISD::VACOPY: + return LowerVACOPY(Op, DAG, PPCSubTarget); + case ISD::STACKRESTORE: return LowerSTACKRESTORE(Op, DAG, PPCSubTarget); case ISD::DYNAMIC_STACKALLOC: return LowerDYNAMIC_STACKALLOC(Op, DAG, PPCSubTarget); |
