blob: 719c05ed2309174b0f8cee00c31a95958448ad67 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
//===-- UnifyFunctionExitNodes.h - Ensure fn's have one return ---*- C++ -*--=//
//
// This pass is used to ensure that functions have at most one return
// instruction in them. Additionally, it keeps track of which node is the new
// exit node of the CFG. If there are no exit nodes in the CFG, the getExitNode
// method will return a null pointer.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_XFORMS_UNIFY_FUNCTION_EXIT_NODES_H
#define LLVM_XFORMS_UNIFY_FUNCTION_EXIT_NODES_H
#include "llvm/Pass.h"
struct UnifyFunctionExitNodes : public FunctionPass {
BasicBlock *ExitNode;
public:
static AnalysisID ID; // Pass ID
UnifyFunctionExitNodes(AnalysisID id = ID) : ExitNode(0) { assert(ID == id); }
// getExitNode - Return the new single (or nonexistant) exit node of the CFG.
//
BasicBlock *getExitNode() const { return ExitNode; }
virtual bool runOnFunction(Function &F);
virtual void getAnalysisUsage(AnalysisUsage &AU) const { AU.addProvided(ID); }
};
static inline Pass *createUnifyFunctionExitNodesPass() {
return new UnifyFunctionExitNodes();
}
#endif
|
