From b444a1fff47162591933e00197375bbbd255f595 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Tue, 7 May 2002 18:51:25 +0000 Subject: [PATCH] Cleanup implementation a bit git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2526 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Transforms/Utils/UnifyFunctionExitNodes.cpp | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp b/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp index 37dc4ab9544..061cf3cc2f6 100644 --- a/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp +++ b/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp @@ -1,7 +1,9 @@ //===- UnifyFunctionExitNodes.cpp - Make all functions have a single exit -===// // -// This file provides several routines that are useful for simplifying CFGs in -// various ways... +// 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. // //===----------------------------------------------------------------------===// @@ -22,7 +24,7 @@ AnalysisID UnifyFunctionExitNodes::ID(AnalysisID::create // // If there are no return stmts in the Function, a null pointer is returned. // -bool UnifyFunctionExitNodes::doit(Function *M, BasicBlock *&ExitNode) { +bool UnifyFunctionExitNodes::runOnFunction(Function *M) { // Loop over all of the blocks in a function, tracking all of the blocks that // return. // @@ -33,7 +35,7 @@ bool UnifyFunctionExitNodes::doit(Function *M, BasicBlock *&ExitNode) { if (ReturningBlocks.empty()) { ExitNode = 0; - return false; // No blocks return + return false; // No blocks return } else if (ReturningBlocks.size() == 1) { ExitNode = ReturningBlocks.front(); // Already has a single return block return false; -- 2.34.1