diff options
| -rw-r--r-- | lib/Transforms/Utils/LoopSimplify.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/Transforms/Utils/LoopSimplify.cpp b/lib/Transforms/Utils/LoopSimplify.cpp index a41692b..3188f12 100644 --- a/lib/Transforms/Utils/LoopSimplify.cpp +++ b/lib/Transforms/Utils/LoopSimplify.cpp @@ -115,7 +115,11 @@ bool LoopSimplify::runOnFunction(Function &F) { /// bool LoopSimplify::ProcessLoop(Loop *L) { bool Changed = false; - + // Canonicalize inner loops before outer loops. Inner loop canonicalization + // can provide work for the outer loop to canonicalize. + for (Loop::iterator I = L->begin(), E = L->end(); I != E; ++I) + Changed |= ProcessLoop(*I); + // Check to see that no blocks (other than the header) in the loop have // predecessors that are not in the loop. This is not valid for natural // loops, but can occur if the blocks are unreachable. Since they are @@ -205,9 +209,6 @@ bool LoopSimplify::ProcessLoop(Loop *L) { PN->eraseFromParent(); } - for (Loop::iterator I = L->begin(), E = L->end(); I != E; ++I) - Changed |= ProcessLoop(*I); - return Changed; } |