Changes in directory llvm/lib/CodeGen/SelectionDAG:
LegalizeDAG.cpp updated: 1.328 -> 1.329
---
Log message:
add expand support for extractelement
---
Diffs of the changes: (+31 -1)
LegalizeDAG.cpp | 32 +++++++++++++++++++++++++++++++-
1 files changed, 31 insertions(+), 1 deletion(-)
Index: llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.328
llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.329
--- llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.328 Tue Mar 21 14:44:12 2006
+++ llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Tue Mar 21 15:02:03 2006
@@ -826,7 +826,37 @@
Tmp1 = LegalizeOp(Node->getOperand(0));
Tmp2 = LegalizeOp(Node->getOperand(1));
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2);
- // FIXME: LOWER.
+
+ switch (TLI.getOperationAction(ISD::EXTRACT_VECTOR_ELT,
+ Tmp1.getValueType())) {
+ default: assert(0 && "This action is not supported yet!");
+ case TargetLowering::Legal:
+ break;
+ case TargetLowering::Custom:
+ Tmp3 = TLI.LowerOperation(Result, DAG);
+ if (Tmp3.Val) {
+ Result = Tmp3;
+ break;
+ }
+ // FALLTHROUGH
+ case TargetLowering::Expand: {
+ // If the target doesn't support this, store the value to a temporary
+ // stack slot, then LOAD the scalar element back out.
+ SDOperand StackPtr = CreateStackTemporary(Tmp1.getValueType());
+ SDOperand Ch = DAG.getNode(ISD::STORE, MVT::Other, DAG.getEntryNode(),
+ Tmp1, StackPtr, DAG.getSrcValue(NULL));
+
+ // Add the offset to the index.
+ unsigned EltSize = MVT::getSizeInBits(Result.getValueType())/8;
+ Tmp2 = DAG.getNode(ISD::MUL, Tmp2.getValueType(), Tmp2,
+ DAG.getConstant(EltSize, Tmp2.getValueType()));
+ StackPtr = DAG.getNode(ISD::ADD, Tmp2.getValueType(), Tmp2, StackPtr);
+
+ Result = DAG.getLoad(Result.getValueType(), Ch, StackPtr,
+ DAG.getSrcValue(NULL));
+ break;
+ }
+ }
break;
case ISD::VEXTRACT_VECTOR_ELT:
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