diff options
Diffstat (limited to 'lib/Transforms/Scalar/LoopInstSimplify.cpp')
-rw-r--r-- | lib/Transforms/Scalar/LoopInstSimplify.cpp | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/LoopInstSimplify.cpp b/lib/Transforms/Scalar/LoopInstSimplify.cpp index a61923cabf..ab1a9393c5 100644 --- a/lib/Transforms/Scalar/LoopInstSimplify.cpp +++ b/lib/Transforms/Scalar/LoopInstSimplify.cpp @@ -127,7 +127,15 @@ bool LoopInstSimplify::runOnLoop(Loop *L, LPPassManager &LPM) { ++NumSimplified; } } - LocalChanged |= RecursivelyDeleteTriviallyDeadInstructions(I, TLI); + bool res = RecursivelyDeleteTriviallyDeadInstructions(I, TLI); + if (res) { + // RecursivelyDeleteTriviallyDeadInstruction can remove + // more than one instruction, so simply incrementing the + // iterator does not work. When instructions get deleted + // re-iterate instead. + BI = BB->begin(); BE = BB->end(); + LocalChanged |= res; + } if (IsSubloopHeader && !isa<PHINode>(I)) break; |