Tighten up the AnalysisUsage of lots of passes, primarily to correctly indicate whether or not they invalidate the CFGA
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2386 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/HoistPHIConstants.cpp b/lib/Transforms/HoistPHIConstants.cpp
index f6e6109..e969ac2 100644
--- a/lib/Transforms/HoistPHIConstants.cpp
+++ b/lib/Transforms/HoistPHIConstants.cpp
@@ -76,6 +76,10 @@
namespace {
struct HoistPHIConstants : public FunctionPass {
virtual bool runOnFunction(Function *F) { return doHoistPHIConstants(F); }
+
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.preservesCFG();
+ }
};
}
diff --git a/lib/Transforms/IPO/ConstantMerge.cpp b/lib/Transforms/IPO/ConstantMerge.cpp
index ee28b13..a635b8d 100644
--- a/lib/Transforms/IPO/ConstantMerge.cpp
+++ b/lib/Transforms/IPO/ConstantMerge.cpp
@@ -82,6 +82,10 @@
Constants.clear();
return false;
}
+
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ }
};
struct DynamicConstantMerge : public ConstantMerge {
diff --git a/lib/Transforms/Instrumentation/TraceValues.cpp b/lib/Transforms/Instrumentation/TraceValues.cpp
index 7b263c7..3845162 100644
--- a/lib/Transforms/Instrumentation/TraceValues.cpp
+++ b/lib/Transforms/Instrumentation/TraceValues.cpp
@@ -49,6 +49,10 @@
bool runOnFunction(Function *F) {
return doit(F, TraceBasicBlockExits, TraceFunctionExits, PrintfFunc);
}
+
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.preservesCFG();
+ }
};
} // end anonymous namespace
diff --git a/lib/Transforms/LevelRaise.cpp b/lib/Transforms/LevelRaise.cpp
index 77d06a0..07981d0 100644
--- a/lib/Transforms/LevelRaise.cpp
+++ b/lib/Transforms/LevelRaise.cpp
@@ -472,6 +472,10 @@
namespace {
struct RaisePointerReferences : public FunctionPass {
virtual bool runOnFunction(Function *F) { return doRPR(F); }
+
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.preservesCFG();
+ }
};
}
diff --git a/lib/Transforms/Scalar/ConstantProp.cpp b/lib/Transforms/Scalar/ConstantProp.cpp
index 0f1d0ae..a8dbe3f 100644
--- a/lib/Transforms/Scalar/ConstantProp.cpp
+++ b/lib/Transforms/Scalar/ConstantProp.cpp
@@ -219,6 +219,12 @@
return Modified;
}
+
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ // FIXME: This pass does not preserve the CFG because it folds terminator
+ // instructions!
+ //AU.preservesCFG();
+ }
};
}
diff --git a/lib/Transforms/Scalar/DecomposeMultiDimRefs.cpp b/lib/Transforms/Scalar/DecomposeMultiDimRefs.cpp
index 78dcfd5..f901a29 100644
--- a/lib/Transforms/Scalar/DecomposeMultiDimRefs.cpp
+++ b/lib/Transforms/Scalar/DecomposeMultiDimRefs.cpp
@@ -175,6 +175,10 @@
virtual bool runOnFunction(Function *F) {
return doDecomposeMultiDimRefs(F);
}
+
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.preservesCFG();
+ }
};
}
diff --git a/lib/Transforms/Scalar/GCSE.cpp b/lib/Transforms/Scalar/GCSE.cpp
index 8bdbad5..b864760 100644
--- a/lib/Transforms/Scalar/GCSE.cpp
+++ b/lib/Transforms/Scalar/GCSE.cpp
@@ -51,7 +51,7 @@
// This transformation requires dominator and immediate dominator info
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
- //preservesCFG(AU);
+ AU.preservesCFG();
AU.addRequired(DominatorSet::ID);
AU.addRequired(ImmediateDominators::ID);
}
diff --git a/lib/Transforms/Scalar/IndVarSimplify.cpp b/lib/Transforms/Scalar/IndVarSimplify.cpp
index a115e05..003419b 100644
--- a/lib/Transforms/Scalar/IndVarSimplify.cpp
+++ b/lib/Transforms/Scalar/IndVarSimplify.cpp
@@ -203,6 +203,7 @@
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired(LoopInfo::ID);
+ AU.preservesCFG();
}
};
}
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index dea0244..626c130 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -42,10 +42,12 @@
}
public:
-
-
virtual bool runOnFunction(Function *F);
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.preservesCFG();
+ }
+
// Visitation implementation - Implement instruction combining for different
// instruction types. The semantics are as follows:
// Return Value:
diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp
index c68004d..12d518b 100644
--- a/lib/Transforms/Scalar/SCCP.cpp
+++ b/lib/Transforms/Scalar/SCCP.cpp
@@ -470,6 +470,10 @@
SCCP S(F);
return S.doSCCP();
}
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ // FIXME: SCCP does not preserve the CFG because it folds terminators!
+ //AU.preservesCFG();
+ }
};
}
diff --git a/lib/Transforms/Scalar/SymbolStripping.cpp b/lib/Transforms/Scalar/SymbolStripping.cpp
index 36b465e..f99684f 100644
--- a/lib/Transforms/Scalar/SymbolStripping.cpp
+++ b/lib/Transforms/Scalar/SymbolStripping.cpp
@@ -64,6 +64,9 @@
virtual bool runOnFunction(Function *F) {
return doSymbolStripping(F);
}
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ }
};
struct FullSymbolStripping : public SymbolStripping {
diff --git a/lib/Transforms/Utils/PromoteMemoryToRegister.cpp b/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
index ab94550..e0d2c24 100644
--- a/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
+++ b/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
@@ -53,6 +53,7 @@
//
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired(DominanceFrontier::ID);
+ AU.preservesCFG();
}
private: