-//===- SwapStructContents.cpp - Swap structure elements around ---*- C++ -*--=//
+//===- SimpleStructMutation.cpp - Swap structure elements around ---*- C++ -*--=//
//
// This pass does a simple transformation that swaps all of the elements of the
// struct types in the program around.
//===----------------------------------------------------------------------===//
-#include "llvm/Transforms/SwapStructContents.h"
-#include "llvm/Transforms/MutateStructTypes.h"
+#include "llvm/Transforms/IPO/SimpleStructMutation.h"
+#include "llvm/Transforms/IPO/MutateStructTypes.h"
#include "llvm/Analysis/FindUsedTypes.h"
#include "llvm/Analysis/FindUnsafePointerTypes.h"
-#include "TransformInternals.h"
+#include "../TransformInternals.h"
#include <algorithm>
+#include <iostream>
+using std::vector;
+using std::set;
+using std::pair;
+
+namespace {
+ class SimpleStructMutation : public MutateStructTypes {
+ public:
+ enum Transform { SwapElements, SortElements } CurrentXForm;
+
+ SimpleStructMutation(enum Transform XForm) : CurrentXForm(XForm) {}
+
+ virtual bool run(Module *M) {
+ setTransforms(getTransforms(M, CurrentXForm));
+ bool Changed = MutateStructTypes::run(M);
+ clearTransforms();
+ return Changed;
+ }
+
+ // getAnalysisUsageInfo - This function needs the results of the
+ // FindUsedTypes and FindUnsafePointerTypes analysis passes...
+ //
+ virtual void getAnalysisUsageInfo(Pass::AnalysisSet &Required,
+ Pass::AnalysisSet &Destroyed,
+ Pass::AnalysisSet &Provided) {
+ Required.push_back(FindUsedTypes::ID);
+ Required.push_back(FindUnsafePointerTypes::ID);
+ MutateStructTypes::getAnalysisUsageInfo(Required, Destroyed, Provided);
+ }
+
+ private:
+ TransformsType getTransforms(Module *M, enum Transform);
+ };
+} // end anonymous namespace
+
-#include "llvm/Assembly/Writer.h"
// PruneTypes - Given a type Ty, make sure that neither it, or one of its
// subtypes, occur in TypesToModify.
// If the element is in TypesToModify, remove it now...
if (const StructType *ST = dyn_cast<StructType>(Ty)) {
TypesToModify.erase(ST); // This doesn't fail if the element isn't present
- cerr << "Unable to swap type: " << ST << endl;
+ std::cerr << "Unable to swap type: " << ST << "\n";
}
// Remove all types that this type contains as well... do not remove types
static inline void GetTransformation(const StructType *ST,
vector<int> &Transform,
- enum PrebuiltStructMutation::Transform XForm) {
+ enum SimpleStructMutation::Transform XForm) {
unsigned NumElements = ST->getElementTypes().size();
Transform.reserve(NumElements);
switch (XForm) {
- case PrebuiltStructMutation::SwapElements:
+ case SimpleStructMutation::SwapElements:
// The transformation to do is: just simply swap the elements
for (unsigned i = 0; i < NumElements; ++i)
Transform.push_back(NumElements-i-1);
break;
- case PrebuiltStructMutation::SortElements: {
+ case SimpleStructMutation::SortElements: {
vector<pair<unsigned, unsigned> > ElList;
// Build mapping from index to size
for (unsigned i = 0; i < NumElements; ++i)
- ElList.push_back(make_pair(i, TD.getTypeSize(ST->getElementTypes()[i])));
+ ElList.push_back(
+ std::make_pair(i, TD.getTypeSize(ST->getElementTypes()[i])));
sort(ElList.begin(), ElList.end(), ptr_fun(FirstLess));
}
}
-// doPassInitialization - This does all of the work of the pass
-//
-PrebuiltStructMutation::TransformsType
- PrebuiltStructMutation::getTransforms(Module *M, enum Transform XForm) {
- // We need to know which types to modify, and which types we CAN'T modify
- FindUsedTypes FUT/*(true)*/; // TODO: Do symbol tables as well
- FindUnsafePointerTypes FUPT;
-
- // Simutaneously find all of the types used, and all of the types that aren't
- // safe.
- //
- vector<Pass*> Analyses;
- Analyses.push_back(&FUT);
- Analyses.push_back(&FUPT);
- Pass::runAllPasses(M, Analyses); // Do analyses
+SimpleStructMutation::TransformsType
+ SimpleStructMutation::getTransforms(Module *M, enum Transform XForm) {
+ // We need to know which types to modify, and which types we CAN'T modify
+ // TODO: Do symbol tables as well
// Get the results out of the analyzers...
- const set<PointerType*> &UnsafePTys = FUPT.getUnsafeTypes();
+ FindUsedTypes &FUT = getAnalysis<FindUsedTypes>();
const set<const Type *> &UsedTypes = FUT.getTypes();
+ FindUnsafePointerTypes &FUPT = getAnalysis<FindUnsafePointerTypes>();
+ const set<PointerType*> &UnsafePTys = FUPT.getUnsafeTypes();
+
+
// Combine the two sets, weeding out non structure types. Closures in C++
// sure would be nice.
set<const Type*> ProcessedTypes;
for (set<PointerType*>::const_iterator I = UnsafePTys.begin(),
E = UnsafePTys.end(); I != E; ++I) {
- cerr << "Pruning type: " << *I << endl;
+ //cerr << "Pruning type: " << *I << "\n";
PruneTypes(*I, TypesToModify, ProcessedTypes);
}
// Build up a set of structure types that we are going to modify, and
// information describing how to modify them.
- map<const StructType*, vector<int> > Transforms;
+ std::map<const StructType*, vector<int> > Transforms;
for (set<const StructType*>::iterator I = TypesToModify.begin(),
E = TypesToModify.end(); I != E; ++I) {
return Transforms;
}
+
+Pass *createSwapElementsPass() {
+ return new SimpleStructMutation(SimpleStructMutation::SwapElements);
+}
+Pass *createSortElementsPass() {
+ return new SimpleStructMutation(SimpleStructMutation::SortElements);
+}
+