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| author | Johannes Doerfert <jdoerfert@anl.gov> | 2019-08-21 20:56:41 +0000 |
|---|---|---|
| committer | Johannes Doerfert <jdoerfert@anl.gov> | 2019-08-21 20:56:41 +0000 |
| commit | d410805d578b6425475dd852aac9610522f816e8 (patch) | |
| tree | 2481c5c465d505d2bfcacfa2d75e5e5df2c2fbaa /llvm/lib/Transforms | |
| parent | da648ab8de3638ff82d6b9349c603b854a0224d6 (diff) | |
| download | bcm5719-llvm-d410805d578b6425475dd852aac9610522f816e8.tar.gz bcm5719-llvm-d410805d578b6425475dd852aac9610522f816e8.zip | |
[Attributor] Use existing unreachable instead of introducing new ones
So far we split the unreachable off and placed a new one, this is not
necessary.
llvm-svn: 369575
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/IPO/Attributor.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/IPO/Attributor.cpp b/llvm/lib/Transforms/IPO/Attributor.cpp index 16894d8e842..82a6eba1e89 100644 --- a/llvm/lib/Transforms/IPO/Attributor.cpp +++ b/llvm/lib/Transforms/IPO/Attributor.cpp @@ -1631,6 +1631,9 @@ struct AAIsDeadImpl : public AAIsDead { Instruction *I = const_cast<Instruction *>(NRC); BasicBlock *BB = I->getParent(); Instruction *SplitPos = I->getNextNode(); + // TODO: mark stuff before unreachable instructions as dead. + if (isa_and_nonnull<UnreachableInst>(SplitPos)) + continue; if (auto *II = dyn_cast<InvokeInst>(I)) { // If we keep the invoke the split position is at the beginning of the |
