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Add jump tables handling for MSP430.

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Patch by Job Noorman!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185364 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov
2013-07-01 19:44:44 +00:00
parent 03fae50cfa
commit 27253f5edd
3 changed files with 65 additions and 0 deletions
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10
lib/Target/MSP430/MSP430ISelLowering.cpp
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@@ -169,6 +169,7 @@ MSP430TargetLowering::MSP430TargetLowering(MSP430TargetMachine &tm) :
setOperationAction(ISD::VAARG, MVT::Other, Expand);
setOperationAction(ISD::VAEND, MVT::Other, Expand);
setOperationAction(ISD::VACOPY, MVT::Other, Expand);
setOperationAction(ISD::JumpTable, MVT::i16, Custom);
// Libcalls names.
if (HWMultMode == HWMultIntr) {
@@ -199,6 +200,7 @@ SDValue MSP430TargetLowering::LowerOperation(SDValue Op,
case ISD::RETURNADDR: return LowerRETURNADDR(Op, DAG);
case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG);
case ISD::VASTART: return LowerVASTART(Op, DAG);
case ISD::JumpTable: return LowerJumpTable(Op, DAG);
default:
llvm_unreachable("unimplemented operand");
}
@@ -981,6 +983,14 @@ SDValue MSP430TargetLowering::LowerVASTART(SDValue Op,
false, false, 0);
}
SDValue MSP430TargetLowering::LowerJumpTable(SDValue Op,
SelectionDAG &DAG) const {
JumpTableSDNode *JT = cast<JumpTableSDNode>(Op);
SDValue Result = DAG.getTargetJumpTable(JT->getIndex(), getPointerTy());
Result.getNode()->setDebugLoc(JT->getDebugLoc());
return Result;
}
/// getPostIndexedAddressParts - returns true by value, base pointer and
/// offset pointer and addressing mode by reference if this node can be
/// combined with a load / store to form a post-indexed load / store.