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Commit c6d52706 authored by Owen Anderson's avatar Owen Anderson
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SDISel's constant branch folding can fold away self-loops, which doesn't... 

SDISel's constant branch folding can fold away self-loops, which doesn't result in any dead blocks, but
rather an incorrect phi input.  Add code to UnreachableMachineBlockElim to get rid of these entries.

llvm-svn: 54432
parent ec8f5eb5
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