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| author | Chris Lattner <sabre@nondot.org> | 2003-02-28 03:07:54 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2003-02-28 03:07:54 +0000 |
| commit | 74cd04ea0154defa837a6d4c12bad29aae44e5b6 (patch) | |
| tree | 1b27a31a38852e99035148539a115017d826b470 /lib | |
| parent | 1db0a400370466e187ae06c96a1586c2c21409dd (diff) | |
| download | external_llvm-74cd04ea0154defa837a6d4c12bad29aae44e5b6.zip external_llvm-74cd04ea0154defa837a6d4c12bad29aae44e5b6.tar.gz external_llvm-74cd04ea0154defa837a6d4c12bad29aae44e5b6.tar.bz2 | |
Fix bug: LICM/2003-02-27-PreheaderExitNodeUpdate.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5667 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/Utils/LoopSimplify.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/Transforms/Utils/LoopSimplify.cpp b/lib/Transforms/Utils/LoopSimplify.cpp index c5adfd2..3759f44 100644 --- a/lib/Transforms/Utils/LoopSimplify.cpp +++ b/lib/Transforms/Utils/LoopSimplify.cpp @@ -28,6 +28,7 @@ #include "llvm/Support/CFG.h" #include "Support/SetOperations.h" #include "Support/Statistic.h" +#include "Support/DepthFirstIterator.h" namespace { Statistic<> NumInserted("preheaders", "Number of pre-header nodes inserted"); @@ -303,7 +304,10 @@ void Preheaders::RewriteLoopExitBlock(Loop *L, BasicBlock *Exit) { // loop of L. if (Loop *Parent = L->getParentLoop()) Parent->addBasicBlockToLoop(NewBB, getAnalysis<LoopInfo>()); - L->changeExitBlock(Exit, NewBB); // Update exit block information + + // Replace any instances of Exit with NewBB in this and any nested loops... + for (df_iterator<Loop*> I = df_begin(L), E = df_end(L); I != E; ++I) + I->changeExitBlock(Exit, NewBB); // Update exit block information // Update dominator information... The blocks that dominate NewBB are the // intersection of the dominators of predecessors, plus the block itself. |