diff options
Diffstat (limited to 'llvm/lib/Analysis/LoopInfo.cpp')
-rw-r--r-- | llvm/lib/Analysis/LoopInfo.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/LoopInfo.cpp b/llvm/lib/Analysis/LoopInfo.cpp index 9ee7236..e679b7a 100644 --- a/llvm/lib/Analysis/LoopInfo.cpp +++ b/llvm/lib/Analysis/LoopInfo.cpp @@ -120,6 +120,13 @@ bool Loop::makeLoopInvariant(Instruction *I, bool &Changed, // Hoist. I->moveBefore(InsertPt); + + // There is possibility of hoisting this instruction above some arbitrary + // condition. Any metadata defined on it can be control dependent on this + // condition. Conservatively strip it here so that we don't give any wrong + // information to the optimizer. + I->dropUnknownNonDebugMetadata(); + Changed = true; return true; } |