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| author | Igor Laevsky <igmyrj@gmail.com> | 2017-11-30 15:07:38 +0000 |
|---|---|---|
| committer | Igor Laevsky <igmyrj@gmail.com> | 2017-11-30 15:07:38 +0000 |
| commit | 444afc82c0558eaef96b0402d00490f5b9ad84cf (patch) | |
| tree | e7e08f986d03ca270d04f46d033e910ef500c439 /llvm/lib/FuzzMutate | |
| parent | 7fb231202c405f88eb628e75b8a68e693ff6b770 (diff) | |
| download | bcm5719-llvm-444afc82c0558eaef96b0402d00490f5b9ad84cf.tar.gz bcm5719-llvm-444afc82c0558eaef96b0402d00490f5b9ad84cf.zip | |
[FuzzMutate] Don't crash when we can't remove instruction from empty function
Differential Revision: https://reviews.llvm.org/D40393
llvm-svn: 319438
Diffstat (limited to 'llvm/lib/FuzzMutate')
| -rw-r--r-- | llvm/lib/FuzzMutate/IRMutator.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/FuzzMutate/IRMutator.cpp b/llvm/lib/FuzzMutate/IRMutator.cpp index 6545446a984..59f94716caa 100644 --- a/llvm/lib/FuzzMutate/IRMutator.cpp +++ b/llvm/lib/FuzzMutate/IRMutator.cpp @@ -147,7 +147,9 @@ void InstDeleterIRStrategy::mutate(Function &F, RandomIRBuilder &IB) { for (Instruction &Inst : instructions(F)) if (!Inst.isTerminator()) RS.sample(&Inst, /*Weight=*/1); - assert(!RS.isEmpty() && "No instructions to delete"); + if (RS.isEmpty()) + return; + // Delete the instruction. mutate(*RS.getSelection(), IB); // Clean up any dead code that's left over after removing the instruction. |
