[llvm-commits] CVS: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

[Chris Lattner]

Changes in directory llvm/lib/CodeGen/SelectionDAG:

SelectionDAG.cpp updated: 1.27 -> 1.28
---
Log message:

Do not fold (zero_ext (sign_ext V)) -> (sign_ext V), they are not the same.

This fixes llvm-test/SingleSource/Regression/C/casts.c



---
Diffs of the changes:  (+2 -2)

Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:1.27 llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:1.28
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:1.27	Wed Jan 12 12:37:47 2005
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp	Wed Jan 12 12:51:15 2005
@@ -511,8 +511,8 @@
     break;
   case ISD::ZERO_EXTEND:
     if (Operand.getValueType() == VT) return Operand;   // noop extension
-    if (OpOpcode == ISD::SIGN_EXTEND || OpOpcode == ISD::ZERO_EXTEND)
-      return getNode(OpOpcode, VT, Operand.Val->getOperand(0));
+    if (OpOpcode == ISD::ZERO_EXTEND)
+      return getNode(ISD::ZERO_EXTEND, VT, Operand.Val->getOperand(0));
     break;
   case ISD::TRUNCATE:
     if (Operand.getValueType() == VT) return Operand;   // noop truncate