regression on Adobe-C++/loop_unroll
Gerolf Hoflehner
ghoflehner at apple.com
Thu Feb 6 11:19:09 PST 2014
Hi Chandler
your commit seems to cause a major regression (>20%) on loop_unroll and other benchmarks as well. This is ( at least) on x86 under -O3 -flto and seems to be due to the loss of LICM. Please take a look.
Cheers
Gerolf
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r200067 | chandlerc | 2014-01-24 20:07:24 -0800 (Fri, 24 Jan 2014) | 44 lines
[LPM] Make LCSSA a utility with a FunctionPass that applies it to all
the loops in a function, and teach LICM to work in the presance of
LCSSA.
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