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

[Owen Anderson]

Changes in directory llvm/lib/Transforms/Scalar:

GVNPRE.cpp updated: 1.28 -> 1.29
---
Log message:

Handle functions with multiple exit blocks properly.


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

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


Index: llvm/lib/Transforms/Scalar/GVNPRE.cpp
diff -u llvm/lib/Transforms/Scalar/GVNPRE.cpp:1.28 llvm/lib/Transforms/Scalar/GVNPRE.cpp:1.29
--- llvm/lib/Transforms/Scalar/GVNPRE.cpp:1.28	Sat Jun  9 13:35:31 2007
+++ llvm/lib/Transforms/Scalar/GVNPRE.cpp	Mon Jun 11 11:25:17 2007
@@ -526,6 +526,9 @@
          df_begin(PDT.getRootNode()), E = df_end(PDT.getRootNode());
          PDI != E; ++PDI) {
       BasicBlock* BB = PDI->getBlock();
+      if (BB == 0)
+        continue;
+      
       DOUT << "Block: " << BB->getName() << "\n";
       DOUT << "TMP_GEN: ";
       dump(generatedTemporaries[BB]);
@@ -635,6 +638,9 @@
          E = df_end(DT.getRootNode()); DI != E; ++DI) {
       BasicBlock* BB = DI->getBlock();
       
+      if (BB == 0)
+        continue;
+      
       std::set<Value*, ExprLT>& new_set = new_sets[BB];
       std::set<Value*, ExprLT>& availOut = availableOut[BB];
       std::set<Value*, ExprLT>& anticIn = anticipatedIn[BB];