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16 Commits

Author SHA1 Message Date
David Greene f790593e6e Change dbgs() back to errs() as Chris requested. 
llvm-svn: 92085
 2009-12-23 23:27:15 +00:00
David Greene 04e7ae6a57 Convert debug messages to use dbgs(). Generally this means 
s/errs/dbgs/g except for certain special cases.

llvm-svn: 92046
 2009-12-23 21:06:14 +00:00
Chris Lattner 9f9010ef47 Add a minor optimization: if we haven't changed the operands of an 
add, there is no need to scan the world to find the same add again.
This invalidates the previous testcase, which wasn't wonderful anyway,
because it needed a run of instcombine to permute the use-lists in 
just the right way to before GVN was run (so it was really fragile).
Not a big loss.

llvm-svn: 90973
 2009-12-09 17:27:45 +00:00
Chris Lattner fa2e536831 fix PR5733, a case where we'd replace an add with a lexically identical 
binary operator that wasn't an add.  In this case, a xor.  Whoops.

llvm-svn: 90971
 2009-12-09 17:18:49 +00:00
Chris Lattner 9af9d0f74e fix a nasty variable that was shadowing the real CurBB but with the wrong value. 
llvm-svn: 90920
 2009-12-09 01:19:16 +00:00
Chris Lattner 11da6b0050 fix many input tracking bugs. 
llvm-svn: 90915
 2009-12-09 00:56:14 +00:00
Chris Lattner 37251f8375 fix PHI translation to take the PHI out of the instinputs set and add 
the translated value back to it if an instruction.

llvm-svn: 90909
 2009-12-09 00:18:13 +00:00
Chris Lattner cfd76375e3 instructions defined in CurBB may be intermediate nodes of the computation. 
llvm-svn: 90908
 2009-12-09 00:10:55 +00:00
Chris Lattner 0aa75680d6 add dumping and sanity checking support. 
llvm-svn: 90906
 2009-12-09 00:01:00 +00:00
Chris Lattner 5cf4b74b45 make sure that PHITransAddr keeps its 'InstInputs' list up to 
date when instsimplify kicks in.

llvm-svn: 90901
 2009-12-08 23:42:51 +00:00
Chris Lattner 6425a23c8c fix a typo (and -> add) and fix GetAvailablePHITranslatedSubExpr to not 
side-effect the current object.

llvm-svn: 90837
 2009-12-08 06:06:26 +00:00
Chris Lattner 9e34d156d3 fix typo 
llvm-svn: 90793
 2009-12-07 19:52:57 +00:00
Chris Lattner dccf7ad8b9 add accessor, improve comment. 
llvm-svn: 90792
 2009-12-07 19:45:30 +00:00
Chris Lattner 77b0d3b217 add support for phi translation and incorpation of new expression. 
llvm-svn: 90782
 2009-12-07 19:04:49 +00:00
Chris Lattner e60244db8c checkpoint of the new PHITransAddr code, still not done and not used by 
anything.

llvm-svn: 90779
 2009-12-07 18:36:53 +00:00
Chris Lattner b63051caf6 add the start of a class used to handle phi translation in memdep and 
gvn (this is just a skeleton so far).  This will ultimately be used
to fix a nasty miscompilation with GVN.

llvm-svn: 90518
 2009-12-04 02:10:16 +00:00