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

[Devang Patel]

Changes in directory llvm/lib/Transforms/Scalar:

LoopStrengthReduce.cpp updated: 1.115 -> 1.116
---
Log message:

Increment iterator now because IVUseShouldUsePostIncValue may remove 
User from the list of I users.


---
Diffs of the changes:  (+6 -2)

 LoopStrengthReduce.cpp |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)


Index: llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
diff -u llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.115 llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.116
--- llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.115	Tue Mar  6 15:14:09 2007
+++ llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp	Fri Mar  9 15:19:53 2007
@@ -400,10 +400,14 @@
   SCEVHandle Stride = Start;
   if (!getSCEVStartAndStride(ISE, L, Start, Stride))
     return false;  // Non-reducible symbolic expression, bail out.
-  
-  for (Value::use_iterator UI = I->use_begin(), E = I->use_end(); UI != E;++UI){
+
+  for (Value::use_iterator UI = I->use_begin(), E = I->use_end(); UI != E;) {
     Instruction *User = cast<Instruction>(*UI);
 
+    // Increment iterator now because IVUseShouldUsePostIncValue may remove 
+    // User from the list of I users.
+    ++UI;
+
     // Do not infinitely recurse on PHI nodes.
     if (isa<PHINode>(User) && Processed.count(User))
       continue;