[llvm-commits] CVS: llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
Chris Lattner
lattner at cs.uiuc.edu
Thu Aug 25 17:24:10 PDT 2005
Changes in directory llvm/lib/CodeGen/SelectionDAG:
LegalizeDAG.cpp updated: 1.171 -> 1.172
---
Log message:
Add support for targets that want to custom expand select_cc in some cases.
---
Diffs of the changes: (+24 -6)
LegalizeDAG.cpp | 30 ++++++++++++++++++++++++------
1 files changed, 24 insertions(+), 6 deletions(-)
Index: llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.171 llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.172
--- llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.171 Thu Aug 25 19:14:16 2005
+++ llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Thu Aug 25 19:23:59 2005
@@ -1113,12 +1113,30 @@
Tmp4 = LegalizeOp(Node->getOperand(3)); // False
if (isTypeLegal(Node->getOperand(0).getValueType())) {
- Tmp1 = LegalizeOp(Node->getOperand(0)); // LHS
- Tmp2 = LegalizeOp(Node->getOperand(1)); // RHS
- if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) ||
- Tmp3 != Node->getOperand(2) || Tmp4 != Node->getOperand(3)) {
- Result = DAG.getNode(ISD::SELECT_CC, Node->getValueType(0), Tmp1, Tmp2,
- Tmp3, Tmp4, Node->getOperand(4));
+ // Everything is legal, see if we should expand this op or something.
+ switch (TLI.getOperationAction(ISD::SELECT_CC,
+ Node->getOperand(0).getValueType())) {
+ default: assert(0 && "This action is not supported yet!");
+ case TargetLowering::Custom: {
+ SDOperand Tmp =
+ TLI.LowerOperation(DAG.getNode(ISD::SELECT_CC, Node->getValueType(0),
+ Node->getOperand(0),
+ Node->getOperand(1), Tmp3, Tmp4,
+ Node->getOperand(5)), DAG);
+ if (Tmp.Val) {
+ Result = LegalizeOp(Tmp);
+ break;
+ }
+ } // FALLTHROUGH if the target can't lower this operation after all.
+ case TargetLowering::Legal:
+ Tmp1 = LegalizeOp(Node->getOperand(0)); // LHS
+ Tmp2 = LegalizeOp(Node->getOperand(1)); // RHS
+ if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) ||
+ Tmp3 != Node->getOperand(2) || Tmp4 != Node->getOperand(3)) {
+ Result = DAG.getNode(ISD::SELECT_CC, Node->getValueType(0), Tmp1, Tmp2,
+ Tmp3, Tmp4, Node->getOperand(4));
+ }
+ break;
}
break;
} else {
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