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3 Commits

Author SHA1 Message Date
Manman Ren
307473dec0 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158551 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-06-15 21:32:12 +00:00
Bill Wendling
3606f75f35 Test simplification that Ana Pazos noticed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141644 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-11 04:43:15 +00:00
Bill Wendling
26e8ca34fe Add testcase for PR11107. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141607 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-11 00:26:57 +00:00