diff options
Diffstat (limited to 'lib')
-rw-r--r-- | lib/Transforms/Scalar/LoopDeletion.cpp | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/lib/Transforms/Scalar/LoopDeletion.cpp b/lib/Transforms/Scalar/LoopDeletion.cpp index 76a773a808..38d0b39a08 100644 --- a/lib/Transforms/Scalar/LoopDeletion.cpp +++ b/lib/Transforms/Scalar/LoopDeletion.cpp @@ -199,7 +199,12 @@ bool LoopDeletion::runOnLoop(Loop* L, LPPassManager& LPM) { // Because we're deleting a large chunk of code at once, the sequence in which // we remove things is very important to avoid invalidation issues. Don't // mess with this unless you have good reason and know what you're doing. - + + // Tell ScalarEvolution that the loop is deleted. Do this before + // deleting the loop so that ScalarEvolution can look at the loop + // to determine what it needs to clean up. + SE.forgetLoopBackedgeTakenCount(L); + // Move simple loop-invariant expressions out of the loop, since they // might be needed by the exit phis. for (Loop::block_iterator LI = L->block_begin(), LE = L->block_end(); @@ -248,11 +253,6 @@ bool LoopDeletion::runOnLoop(Loop* L, LPPassManager& LPM) { (*LI)->dropAllReferences(); } - // Tell ScalarEvolution that the loop is deleted. Do this before - // deleting the loop so that ScalarEvolution can look at the loop - // to determine what it needs to clean up. - SE.forgetLoopBackedgeTakenCount(L); - // Erase the instructions and the blocks without having to worry // about ordering because we already dropped the references. // NOTE: This iteration is safe because erasing the block does not remove its |