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3 Commits

Author SHA1 Message Date
Manman Ren
7ffcd63dea ARM: optimization for sub+abs. 
This patch will optimize abs(x-y)
FROM
sub, movs, rsbmi
TO
subs, rsbmi

For abs, we will use cmp instead of movs. This is necessary because we already
have an existing peephole pass which optimizes away cmp following sub.

rdar: 11633193
llvm-svn: 158551
 2012-06-15 21:32:12 +00:00
Bill Wendling
2606813218 Test simplification that Ana Pazos noticed. 
llvm-svn: 141644
 2011-10-11 04:43:15 +00:00
Bill Wendling
cb617ae8e0 Add testcase for PR11107. 
llvm-svn: 141607
 2011-10-11 00:26:57 +00:00