6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-04-04 10:30:01 +00:00
Code Issues Projects Releases Wiki Activity

Tell ScalarEvolution that the loop is being deleted before actually

Browse Source 
deleting it.  This will let ScalarEvolution be more complete about
updating its records.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70632 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-05-02 17:29:26 +00:00
parent 0e80b7cda1
commit 9a936502fa
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lib/Transforms/Scalar/LoopDeletion.cpp
View File

@ -258,6 +258,11 @@ 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
@ -266,9 +271,6 @@ bool LoopDeletion::runOnLoop(Loop* L, LPPassManager& LPM) {
LI != LE; ++LI)
(*LI)->eraseFromParent();
// Tell ScalarEvolution that the loop is deleted.
SE.forgetLoopBackedgeTakenCount(L);
// Finally, the blocks from loopinfo. This has to happen late because
// otherwise our loop iterators won't work.
LoopInfo& loopInfo = getAnalysis<LoopInfo>();