llvm-6502/2012-07-19-NoSuccessorIndirectBr.ll at 716c5d8a308a2257298f1f227edf7f7ae102cf4f - llvm-6502 - Applefritter: Git

6502/llvm-6502

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Richard Osborne dd2fb6c10b Fix assertion in jump threading (PR13405).

GetBestDestForJumpOnUndef() assumes there is at least 1 successor, which isn't
true if the block ends in an indirect branch with no successors. Fix this by
bailing out earlier in this case.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160546 91177308-0d34-0410-b5e6-96231b3b80d8

2012-07-20 10:36:17 +00:00

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 ; RUN: opt < %s -jump-threading
 ; PR 13405
 ; Just check that it doesn't crash / assert
 define i32 @f() nounwind {
 entry:
   indirectbr i8* undef, []
 }