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9d726159c1
llvm-svn: 1596
38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
//===-- UnifyMethodExitNodes.h - Ensure methods have one return --*- C++ -*--=//
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//
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// This pass is used to ensure that methods have at most one return instruction
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// in them. It also holds onto the return instruction of the last unified
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// method.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_XFORMS_UNIFY_METHOD_EXIT_NODES_H
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#define LLVM_XFORMS_UNIFY_METHOD_EXIT_NODES_H
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#include "llvm/Pass.h"
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#include "llvm/Analysis/SimplifyCFG.h" // FIXME!!
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struct UnifyMethodExitNodes : public MethodPass {
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BasicBlock *ExitNode;
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public:
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static AnalysisID ID; // Pass ID
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UnifyMethodExitNodes(AnalysisID id) : ExitNode(0) { assert(ID == id); }
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virtual bool runOnMethod(Method *M) {
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ExitNode = cfg::UnifyAllExitNodes(M);
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return true; // FIXME: This should return a correct code!!!
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}
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BasicBlock *getExitNode() const { return ExitNode; }
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virtual void getAnalysisUsageInfo(Pass::AnalysisSet &Required,
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Pass::AnalysisSet &Destroyed,
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Pass::AnalysisSet &Provided) {
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// FIXME: Should invalidate CFG
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Provided.push_back(ID); // Provide self!
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}
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};
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#endif
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