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Author SHA1 Message Date
Devang Patel d926aaa28f Revert rev. 66167. 
We are still not out of woods yet.

llvm-svn: 66232
 2009-03-06 01:37:41 +00:00
Devang Patel 709d6ac46d GlobalOpt only process non constant local GVs while optimizing global vars. 
If non constant local GV named A is used by a constant local GV named B (e.g. llvm.dbg.variable) and B is not used by anyone else then eliminate A as well as B.

In other words, debug info should not interfere in removal of unused GV.
--This life, and those below, will be ignored--

M    test/Transforms/GlobalOpt/2009-03-03-dbg.ll
M    lib/Transforms/IPO/GlobalOpt.cpp

llvm-svn: 66167
 2009-03-05 18:12:02 +00:00
Bill Wendling 19ce8619da Should have XFAILed this test. 
llvm-svn: 66086
 2009-03-04 22:29:34 +00:00
Bill Wendling 803da0db79 Temporarily revert r65994. It was causing rdar://6646455. 
llvm-svn: 66083
 2009-03-04 22:02:09 +00:00
Devang Patel 812459613b If a global constant is dead then global's debug info should not prevent the optimizer in deleting the global. And while deleting global, delete global's debug info also. 
llvm-svn: 65994
 2009-03-04 01:22:23 +00:00