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59 Commits

Author SHA1 Message Date
Chris Lattner 9c5693fb2a Canonicalize inner loops before outer loops. Inner loop canonicalization 
can provide work for the outer loop to canonicalize.

This fixes a case that breaks unswitching.

llvm-svn: 26189
 2006-02-14 23:06:02 +00:00
Chris Lattner cffbbee8d1 When splitting exit edges to canonicalize loops, make sure to put the new 
block in the appropriate loop nest.

Third time is the charm, right?

llvm-svn: 26187
 2006-02-14 22:34:08 +00:00
Chris Lattner 02f53ad3a2 Revert my last patch. It too breaks stuff 
llvm-svn: 26128
 2006-02-12 01:59:10 +00:00
Chris Lattner 35248e06bc Fix for my previously reverted patch 
llvm-svn: 26126
 2006-02-11 21:24:54 +00:00
Chris Lattner b24ce3a2a8 revert my previous change, it exposed other problems. 
llvm-svn: 26121
 2006-02-11 08:47:47 +00:00
Chris Lattner 05bf90dddf Make this check stricter. Disallow loop exit blocks from being shared by 
loops and their subloops.

llvm-svn: 26118
 2006-02-11 02:13:17 +00:00
Chris Lattner a6ae101afa remove dead expr 
llvm-svn: 26116
 2006-02-11 01:43:37 +00:00
Chris Lattner cda4aa6eb4 Teach loopsimplify to update et-forest. Patch contributed by Daniel Berlin! 
llvm-svn: 25153
 2006-01-09 08:03:08 +00:00
Jeff Cohen 2b8cbf319c Update Visual Studio projects to reflect moved file. 
llvm-svn: 23998
 2005-10-26 05:36:51 +00:00