Changes in directory llvm/lib/VMCore:
PassManager.cpp updated: 1.143 -> 1.144
---
Log message:
Keep track of inherited analysis. For example, if a loop pass does not
preserve dominator info then it should update parent FPPassManager's
available analysis info to reflect this.
---
Diffs of the changes: (+21 -0)
PassManager.cpp | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+)
Index: llvm/lib/VMCore/PassManager.cpp
diff -u llvm/lib/VMCore/PassManager.cpp:1.143
llvm/lib/VMCore/PassManager.cpp:1.144
--- llvm/lib/VMCore/PassManager.cpp:1.143 Mon Mar 5 19:06:16 2007
+++ llvm/lib/VMCore/PassManager.cpp Mon Mar 5 19:55:46 2007
@@ -551,6 +551,27 @@
AvailableAnalysis.erase(Info);
}
}
+
+ // Check inherited analysis also. If P is not preserving analysis
+ // provided by parent manager then remove it here.
+ for (unsigned Index = 0; Index < PMT_Last; ++Index) {
+
+ if (!InheritedAnalysis[Index])
+ continue;
+
+ for (std::map<AnalysisID, Pass*>::iterator
+ I = InheritedAnalysis[Index]->begin(),
+ E = InheritedAnalysis[Index]->end(); I != E; ) {
+ std::map<AnalysisID, Pass *>::iterator Info = I++;
+ if (std::find(PreservedSet.begin(), PreservedSet.end(), Info->first) ==
+ PreservedSet.end()) {
+ // Remove this analysis
+ if (!dynamic_cast<ImmutablePass*>(Info->second))
+ InheritedAnalysis[Index]->erase(Info);
+ }
+ }
+ }
+
}
/// Remove analysis passes that are not used any longer
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