Changes in directory llvm/lib/CodeGen/SelectionDAG:
LegalizeDAG.cpp updated: 1.477 -> 1.478
---
Log message:
Simplify lowering and selection of exception ops.
---
Diffs of the changes: (+26 -2)
LegalizeDAG.cpp | 28 ++++++++++++++++++++++++++--
1 files changed, 26 insertions(+), 2 deletions(-)
Index: llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.477
llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.478
--- llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.477 Wed Feb 21 16:53:45 2007
+++ llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Thu Feb 22 09:37:19 2007
@@ -668,8 +668,6 @@
break;
case ISD::FRAMEADDR:
case ISD::RETURNADDR:
- case ISD::EXCEPTIONADDR:
- case ISD::EHSELECTION:
// The only option for these nodes is to custom lower them. If the target
// does not custom lower them, then return zero.
Tmp1 = TLI.LowerOperation(Op, DAG);
@@ -678,6 +676,32 @@
else
Result = DAG.getConstant(0, TLI.getPointerTy());
break;
+ case ISD::EHSELECTION:
+ LegalizeOp(Node->getOperand(1));
+ // Fall Thru
+ case ISD::EXCEPTIONADDR: {
+ Tmp1 = LegalizeOp(Node->getOperand(0));
+ MVT::ValueType VT = Node->getValueType(0);
+ switch (TLI.getOperationAction(Node->getOpcode(), VT)) {
+ default: assert(0 && "This action is not supported yet!");
+ case TargetLowering::Expand: {
+ unsigned Reg = Node->getOpcode() == ISD::EXCEPTIONADDR ?
+ TLI.getExceptionAddressRegister() :
+ TLI.getExceptionSelectorRegister();
+ Result = DAG.getCopyFromReg(Tmp1, Reg, VT).getValue(Op.ResNo);
+ }
+ break;
+ case TargetLowering::Custom:
+ Result = TLI.LowerOperation(Op, DAG);
+ if (Result.Val) break;
+ // Fall Thru
+ case TargetLowering::Legal:
+ Result = DAG.getNode(ISD::MERGE_VALUES, VT, DAG.getConstant(0, VT),
Tmp1).
+ getValue(Op.ResNo);
+ break;
+ }
+ }
+ break;
case ISD::AssertSext:
case ISD::AssertZext:
Tmp1 = LegalizeOp(Node->getOperand(0));
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