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Change behavior of changeExitBlock function to replace all instances of exit block

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llvm-svn: 5661
This commit is contained in:
Chris Lattner 2003-02-27 22:37:44 +00:00
parent c0fc5571dc
commit c37308604f
2 changed files with 10 additions and 4 deletions
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4
include/llvm/Analysis/LoopInfo.h
View File

@ -89,8 +89,8 @@ public:
///
void addBasicBlockToLoop(BasicBlock *NewBB, LoopInfo &LI);
/// changeExitBlock - This method is used to update loop information. One
/// instance of the specified Old basic block is removed from the exit list
/// changeExitBlock - This method is used to update loop information. All
/// instances of the specified Old basic block are removed from the exit list
/// and replaced with New.
///
void changeExitBlock(BasicBlock *Old, BasicBlock *New);

10
lib/Analysis/LoopInfo.cpp
View File

@ -235,8 +235,8 @@ void Loop::addBasicBlockToLoop(BasicBlock *NewBB, LoopInfo &LI) {
}
}
/// changeExitBlock - This method is used to update loop information. One
/// instance of the specified Old basic block is removed from the exit list
/// changeExitBlock - This method is used to update loop information. All
/// instances of the specified Old basic block are removed from the exit list
/// and replaced with New.
///
void Loop::changeExitBlock(BasicBlock *Old, BasicBlock *New) {
@ -246,4 +246,10 @@ void Loop::changeExitBlock(BasicBlock *Old, BasicBlock *New) {
std::find(ExitBlocks.begin(), ExitBlocks.end(), Old);
assert(I != ExitBlocks.end() && "Old exit block not found!");
*I = New;
I = std::find(I+1, ExitBlocks.end(), Old);
while (I != ExitBlocks.end()) {
*I = New;
I = std::find(I+1, ExitBlocks.end(), Old);
}
}