[PATCH] D16156: Proper handling of diamond-like cases in if-conversion

[Krzysztof Parzyszek via llvm-commits]

kparzysz created this revision.
kparzysz added a reviewer: MatzeB.
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kparzysz set the repository for this revision to rL LLVM.

If converter was somewhat careless about "diamond" cases, where there was no join block, or in other words, where the true/false blocks did not have analyzable branches. In such cases, it was possible for it to remove the (necessary) branches, resulting in a loss of entire basic blocks.


Repository:
  rL LLVM

http://reviews.llvm.org/D16156

Files:
  lib/CodeGen/IfConversion.cpp
  test/CodeGen/Hexagon/ifcvt-diamond-bad.ll

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