728db4997a
Implement proper ObjC ARC objc_retainBlock "escape" analysis, so that
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the optimizer doesn't eliminate objc_retainBlock calls which are needed
for their side effect of copying blocks onto the heap.
This implements rdar://10361249.
llvm-svn: 148076
2012-01-13 00:39:07 +00:00
bd944b4153
It turns out that clang does use pointer-to-function types to
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point to ARC-managed pointers sometimes. This fixes rdar://10551239.
llvm-svn: 146577
2011-12-14 19:10:53 +00:00
6a144a2227
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.
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llvm-svn: 145171
2011-11-27 06:54:59 +00:00
1736c14b85
Suppress partial retain+release elimination when there's a
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possibility that it will span multiple CFG diamonds/triangles which
could have different controlling predicates. rdar://10282956
llvm-svn: 142222
2011-10-17 18:48:25 +00:00
e6174a2c85
Update more tests to the new EH scheme.
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llvm-svn: 138894
2011-08-31 21:04:11 +00:00
56e1cef705
Constant pointers to objects don't need reference counting.
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llvm-svn: 138242
2011-08-22 17:29:11 +00:00
bce94fded8
Make a few tests slightly more strict.
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llvm-svn: 138241
2011-08-22 17:27:02 +00:00
b38940135b
Track a retain+release nesting level independently of the
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known-incremented level, because the two concepts can be used
to prove the saftey of a retain+release removal in different
ways.
llvm-svn: 138016
2011-08-19 00:26:36 +00:00
d935e9c359
The ARC language-specific optimizer. Credit to Dan Gohman.
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llvm-svn: 133108
2011-06-15 23:37:01 +00:00
Dan Gohman