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4 Commits

Author SHA1 Message Date
Andrew Trick
e1d5ae73ac LSR: rewrite inner loops only. 
Rewriting the entire loop nest now requires -enable-lsr-nested.
See PR11035 for some performance data.
A few unit tests specifically test nested LSR, and are now under a flag.

llvm-svn: 140762
 2011-09-29 01:33:38 +00:00
Chandler Carruth
df1690a113 FileCheck-ize, tightening checks and avoiding a temporary file. 
llvm-svn: 134341
 2011-07-02 20:42:42 +00:00
Dan Gohman
df2896d609 Eliminate more uses of llvm-as and llvm-dis. 
llvm-svn: 81290
 2009-09-08 23:54:48 +00:00
Dan Gohman
e1a532cb4f Permit ChangeCompareStride to rewrite a comparison when the factor 
between the comparison's iv stride and the candidate stride is
exactly -1.

llvm-svn: 70244
 2009-04-27 20:35:32 +00:00