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4 Commits

Author SHA1 Message Date
Andrew Trick 443332deca Test case pasto (failed when run with IR verifier). 
llvm-svn: 132516
 2011-06-02 23:57:27 +00:00
Andrew Trick 812276eed4 scev: Better sign-extend removal. Normalize postincrement recurrences 
so that their sign extended forms are congruent when no overflow occurs.

llvm-svn: 132360
 2011-05-31 21:17:47 +00:00
Andrew Trick 7fac79e255 indvars: incremental fixes for -disable-iv-rewrite and testcases. 
Use a proper worklist for use-def traversal without holding onto an
iterator. Now that we process all IV uses, we need complete logic for
resusing existing derived IV defs. See HoistStep.

llvm-svn: 132103
 2011-05-26 00:46:11 +00:00
Andrew Trick eb3c36e69c indvars: fixed IV cloning in -disable-iv-rewrite mode with associated 
cleanup and overdue test cases.

llvm-svn: 132038
 2011-05-25 04:42:22 +00:00