Changes in directory llvm/lib/CodeGen/SelectionDAG:
DAGCombiner.cpp updated: 1.158 -> 1.159
---
Log message:
Fold trunc(any_ext). This gives stuff like:
27,28c27
< movzwl %di, %edi
< movl %edi, %ebx
---
> movw %di, %bx
---
Diffs of the changes: (+2 -1)
DAGCombiner.cpp | 3 ++-
1 files changed, 2 insertions(+), 1 deletion(-)
Index: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:1.158
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:1.159
--- llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:1.158 Fri May 5 17:53:17 2006
+++ llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp Fri May 5 17:56:26 2006
@@ -2005,7 +2005,8 @@
if (N0.getOpcode() == ISD::TRUNCATE)
return DAG.getNode(ISD::TRUNCATE, VT, N0.getOperand(0));
// fold (truncate (ext x)) -> (ext x) or (truncate x) or x
- if (N0.getOpcode() == ISD::ZERO_EXTEND || N0.getOpcode() ==
ISD::SIGN_EXTEND){
+ if (N0.getOpcode() == ISD::ZERO_EXTEND || N0.getOpcode() ==
ISD::SIGN_EXTEND||
+ N0.getOpcode() == ISD::ANY_EXTEND) {
if (N0.getValueType() < VT)
// if the source is smaller than the dest, we still need an extend
return DAG.getNode(N0.getOpcode(), VT, N0.getOperand(0));
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