[llvm-commits] CVS: llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp

[Chris Lattner]

Changes in directory llvm/lib/Transforms/Scalar:

LoopStrengthReduce.cpp updated: 1.33 -> 1.34
---
Log message:

Fix a case that caused this to crash on 178.galgel


---
Diffs of the changes:  (+6 -0)

 LoopStrengthReduce.cpp |    6 ++++++
 1 files changed, 6 insertions(+)


Index: llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
diff -u llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.33 llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.34
--- llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.33	Thu Aug  4 14:08:16 2005
+++ llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp	Thu Aug  4 14:26:19 2005
@@ -415,6 +415,12 @@
     return GetImmediateValues(SARE->getStart(), isAddress, L);
   }
 
+  if (!Val->isLoopInvariant(L)) {
+    // If this is a loop-variant expression, it must stay in the immediate
+    // field of the expression.
+    return Val;
+  }
+    
   return SCEVUnknown::getIntegerSCEV(0, Val->getType());
 }