[llvm-commits] CVS: llvm/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h

[Chris Lattner]

Changes in directory llvm/include/llvm/Transforms/Utils:

UnifyFunctionExitNodes.h updated: 1.14 -> 1.15

---
Log message:

Expand the pass to unify all of the unwind blocks as well


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Diffs of the changes:

Index: llvm/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h
diff -u llvm/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h:1.14 llvm/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h:1.15
--- llvm/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h:1.14	Mon Mar 31 11:29:18 2003
+++ llvm/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h	Wed Sep 10 15:34:38 2003
@@ -1,9 +1,10 @@
-//===-- UnifyFunctionExitNodes.h - Ensure fn's have one return ---*- C++ -*--=//
+//===-- 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.
+// This pass is used to ensure that functions have at most one return and one
+// unwind instruction in them.  Additionally, it keeps track of which node is
+// the new exit node of the CFG.  If there are no return or unwind instructions
+// in the function, the getReturnBlock/getUnwindBlock methods will return a null
+// pointer.
 //
 //===----------------------------------------------------------------------===//
 
@@ -13,22 +14,22 @@
 #include "llvm/Pass.h"
 
 struct UnifyFunctionExitNodes : public FunctionPass {
-  BasicBlock *ExitNode;
+  BasicBlock *ReturnBlock, *UnwindBlock;
 public:
-  UnifyFunctionExitNodes() : ExitNode(0) {}
+  UnifyFunctionExitNodes() : ReturnBlock(0), UnwindBlock(0) {}
 
   // We can preserve non-critical-edgeness when we unify function exit nodes
   virtual void getAnalysisUsage(AnalysisUsage &AU) const;
 
-  // getExitNode - Return the new single (or nonexistant) exit node of the CFG.
+  // getReturn|UnwindBlock - Return the new single (or nonexistant) return or
+  // unwind basic blocks in the CFG.
   //
-  BasicBlock *getExitNode() const { return ExitNode; }
+  BasicBlock *getReturnBlock() const { return ReturnBlock; }
+  BasicBlock *getUnwindBlock() const { return UnwindBlock; }
 
   virtual bool runOnFunction(Function &F);
 };
 
-static inline Pass *createUnifyFunctionExitNodesPass() {
-  return new UnifyFunctionExitNodes();
-}
+Pass *createUnifyFunctionExitNodesPass();
 
 #endif