From f084b2164462e8d63ccc1c9cf1b15f4b0abb339a Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Fri, 6 Jul 2001 16:57:52 +0000
Subject: [PATCH] New file, includes method to merge exit nodes together

llvm-svn: 141
---
 include/llvm/Analysis/SimplifyCFG.h | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 include/llvm/Analysis/SimplifyCFG.h

diff --git a/include/llvm/Analysis/SimplifyCFG.h b/include/llvm/Analysis/SimplifyCFG.h
new file mode 100644
index 00000000000..062d16a2de6
--- /dev/null
+++ b/include/llvm/Analysis/SimplifyCFG.h
@@ -0,0 +1,27 @@
+//===- llvm/Analysis/SimplifyCFG.h - CFG Simplification XForms ---*- C++ -*--=//
+//
+// This file provides several routines that are useful for simplifying CFGs in
+// various ways...
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ANALYSIS_SIMPLIFY_CFG_H
+#define LLVM_ANALYSIS_SIMPLIFY_CFG_H
+
+class BasicBlock;
+class Method;
+
+namespace cfg {
+
+  // UnifyAllExitNodes - Unify all exit nodes of the CFG by creating a new
+  // BasicBlock, and converting all returns to unconditional branches to this
+  // new basic block.  The singular exit node is returned.
+  //
+  // If there are no return stmts in the Method, a null pointer is returned.
+  //
+  BasicBlock *UnifyAllExitNodes(Method *M);
+
+}  // End Namespace cfg
+
+
+#endif