diff options
| author | Bill Wendling <isanbard@gmail.com> | 2011-09-01 01:16:58 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2011-09-01 01:16:58 +0000 |
| commit | 1893cd31313d240279b3d65b24bc1d69003e9bc5 (patch) | |
| tree | ff13477921ddfe9382fd468694aa1bdc9feb280d /lib/Transforms/InstCombine/InstructionCombining.cpp | |
| parent | 65088e7d96c20f5068a0c0c6bf9223a82011709f (diff) | |
Don't DCE the landingpad instruction.
The landingpad instruction can be removed only when its invokes are removed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138930 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/InstCombine/InstructionCombining.cpp')
| -rw-r--r-- | lib/Transforms/InstCombine/InstructionCombining.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Transforms/InstCombine/InstructionCombining.cpp b/lib/Transforms/InstCombine/InstructionCombining.cpp index 838678b9fa..4eea2ff395 100644 --- a/lib/Transforms/InstCombine/InstructionCombining.cpp +++ b/lib/Transforms/InstCombine/InstructionCombining.cpp @@ -1577,6 +1577,11 @@ bool InstCombiner::DoOneIteration(Function &F, unsigned Iteration) { while (Term != BB->begin()) { // Remove instrs bottom-up BasicBlock::iterator I = Term; --I; + // Don't remove the landingpad instruction. This should be removed + // only if its invokes are also removed. + if (isa<LandingPadInst>(I)) + continue; + DEBUG(errs() << "IC: DCE: " << *I << '\n'); // A debug intrinsic shouldn't force another iteration if we weren't // going to do one without it. |