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3 Commits

Author SHA1 Message Date
Cameron Zwarich
9d8ab7d0f7 Rename 'loopsimplify' to 'loop-simplify'. 
llvm-svn: 125317
 2011-02-10 23:38:10 +00:00
Dan Gohman
d115107ef2 Make Loop::getLoopLatch() work on loops which don't have preheaders, as 
it may be used in contexts where preheader insertion may have failed due
to an indirectbr.

Make LoopSimplify's LoopSimplify::SeparateNestedLoop properly fail in
the case that it would require splitting an indirectbr edge.

These fix PR5502.

llvm-svn: 89484
 2009-11-20 20:51:18 +00:00
Dan Gohman
f65735f0c5 The introduction of indirectbr meant the introduction of 
unsplittable critical edges, which means the introduction of
loops which cannot be transformed to LoopSimplify form. Fix
LoopSimplify to avoid transforming such loops into invalid
code.

llvm-svn: 86176
 2009-11-05 21:14:46 +00:00