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6 Commits

Author SHA1 Message Date
Nick Lewycky d2c3bdd269 Add testcases for GlobalOpt changes in r160693 and r160757. 
llvm-svn: 160925
 2012-07-29 01:15:37 +00:00
Nick Lewycky faa9c3b035 Teach globalopt to not nuke all stores to globals. Keep them around of they 
might be deliberate "one time" leaks, so that leak checkers can find them.
This is a reapply of r160602 with the fix that this time I'm committing the
code I thought I was committing last time; the I->eraseFromParent() goes
*after* the break out of the loop.

llvm-svn: 160664
 2012-07-24 07:21:08 +00:00
Nick Lewycky 9669c198ba Revert r160602. 
llvm-svn: 160603
 2012-07-21 09:03:15 +00:00
Nick Lewycky 72b83e5eaa Teach globalopt to play nice with leak checkers. This is a reapplication of 
r160529 that was subsequently reverted. The fix was to not call
GV->eraseFromParent() right before the caller does the same. The existing
testcases already caught this bug if run under valgrind.

llvm-svn: 160602
 2012-07-21 08:29:45 +00:00
Nick Lewycky 7707e23429 Revert r160529 due to crashes. 
llvm-svn: 160532
 2012-07-19 23:59:21 +00:00
Nick Lewycky 0fa6a28141 Don't wipe out global variables that are probably storing pointers to heap 
memory. This makes clang play nice with leak checkers.

llvm-svn: 160529
 2012-07-19 22:35:28 +00:00