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| author | Chris Lattner <sabre@nondot.org> | 2009-11-10 01:19:06 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-11-10 01:19:06 +0000 |
| commit | e7c90967b17286b0e8fe21fcbfb9cf898b6e7a96 (patch) | |
| tree | 4cfd69123a0e21fb7fcd87d81ba062bb862c9cb2 /lib/Transforms/Scalar/JumpThreading.cpp | |
| parent | e34537856a544c83513e390ac9552a8bc3823346 (diff) | |
| download | llvm-e7c90967b17286b0e8fe21fcbfb9cf898b6e7a96.tar.gz llvm-e7c90967b17286b0e8fe21fcbfb9cf898b6e7a96.tar.bz2 llvm-e7c90967b17286b0e8fe21fcbfb9cf898b6e7a96.tar.xz | |
don't invalidate PN, rewrite of this code is in progress anyway.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86639 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/JumpThreading.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/JumpThreading.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/Transforms/Scalar/JumpThreading.cpp b/lib/Transforms/Scalar/JumpThreading.cpp index 46d40ef5d1..7a7f407b96 100644 --- a/lib/Transforms/Scalar/JumpThreading.cpp +++ b/lib/Transforms/Scalar/JumpThreading.cpp @@ -223,10 +223,11 @@ static void RemovePredecessorAndSimplify(BasicBlock *BB, BasicBlock *Pred, U = PNV; // See if we can simplify it. - if (Value *V = SimplifyInstruction(User, TD)) { - User->replaceAllUsesWith(V); - User->eraseFromParent(); - } + if (User != PN) + if (Value *V = SimplifyInstruction(User, TD)) { + User->replaceAllUsesWith(V); + User->eraseFromParent(); + } } PN->replaceAllUsesWith(PNV); |