[llvm-commits] [PATCH] fix assertion in jump-threading (PR13405)

[Richard Osborne]

This fixes an assertion in jump threading (see PR13405). The assertion 
happens because GetBestDestForJumpOnUndef() assumes there is at least 1 
successor, which isn't the case if the block ends in an indirect branch 
with no successors. This patch fixes the problem by bailing out in this 
case.

OK to commit?

-- 
Richard Osborne | XMOS
http://www.xmos.com

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