diff options
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp index 9a9b0c2aeca..b33bc859c5f 100644 --- a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp +++ b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp @@ -393,9 +393,16 @@ bool LoopStrengthReduce::AddUsersIfInteresting(Instruction *I, Loop *L) { continue; // If this is an instruction defined in a nested loop, or outside this loop, - // don't mess with it. - if (LI->getLoopFor(User->getParent()) != L) + // don't recurse into it. + if (LI->getLoopFor(User->getParent()) != L) { + DEBUG(std::cerr << "FOUND USER in nested loop: " << *User + << " OF SCEV: " << *ISE << "\n"); + + // Okay, we found a user that we cannot reduce. Analyze the instruction + // and decide what to do with it. + IVUsesByStride[Step].addUser(Start, User, I); continue; + } // Next, see if this user is analyzable itself! if (!AddUsersIfInteresting(User, L)) { |
