diff options
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/GVN.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/GVN.cpp b/llvm/lib/Transforms/Scalar/GVN.cpp index 95137793f20..1e89ef7b22d 100644 --- a/llvm/lib/Transforms/Scalar/GVN.cpp +++ b/llvm/lib/Transforms/Scalar/GVN.cpp @@ -952,8 +952,14 @@ bool GVN::processNonLocalLoad(LoadInst *LI, // If we had a phi translation failure, we'll have a single entry which is a // clobber in the current block. Reject this early. - if (Deps.size() == 1 && Deps[0].second.isClobber()) + if (Deps.size() == 1 && Deps[0].second.isClobber()) { + DEBUG( + DOUT << "GVN: non-local load "; + WriteAsOperand(*DOUT.stream(), LI); + DOUT << " is clobbered by " << *Deps[0].second.getInst(); + ); return false; + } // Filter out useless results (non-locals, etc). Keep track of the blocks // where we have a value available in repl, also keep track of whether we see |
