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| author | Owen Anderson <resistor@mac.com> | 2007-07-25 23:54:42 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2007-07-25 23:54:42 +0000 |
| commit | 3a9c0ccd2d92f8acd4f78c281de1dd61f4f89782 (patch) | |
| tree | b15e23af91f81add995912e606f8837db6b150f2 /lib | |
| parent | ffee401ebf20a9c0161b8114afe1165cde00a066 (diff) | |
| download | external_llvm-3a9c0ccd2d92f8acd4f78c281de1dd61f4f89782.zip external_llvm-3a9c0ccd2d92f8acd4f78c281de1dd61f4f89782.tar.gz external_llvm-3a9c0ccd2d92f8acd4f78c281de1dd61f4f89782.tar.bz2 | |
Fix what is _hopefully_ the last corner case for loops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40503 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/Scalar/GVN.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp index f3aa796..d7e6228 100644 --- a/lib/Transforms/Scalar/GVN.cpp +++ b/lib/Transforms/Scalar/GVN.cpp @@ -738,8 +738,12 @@ Value *GVN::performPHIConstruction(BasicBlock *BB, LoadInst* orig, for (pred_iterator PI = pred_begin(BB), E = pred_end(BB); PI != E; ++PI) if (!visited.count(*PI)) PN->addIncoming(performPHIConstruction(*PI, orig, Phis, visited), *PI); - else - PN->addIncoming(Phis[*PI], *PI); + else { + if (Phis[*PI]) + PN->addIncoming(Phis[*PI], *PI); + else + PN->addIncoming(PN, *PI); + } visited.erase(BB); bool all_same = PN->getNumIncomingValues() != 1; |