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* [objc-arc] Track if we encountered an additive overflow while computing ↵Michael Gottesman2013-08-091-3/+1063
| | | | | | | | | | | {TopDown,BottomUp}PathCounts and do nothing if it occurred. I fixed the aforementioned problems that came up on some of the linux boxes. Major thanks to Nick Lewycky for his help debugging! rdar://14590914 llvm-svn: 188122
* Revert "[objc-arc] Track if we encountered an additive overflow while ↵Michael Gottesman2013-08-081-1063/+3
| | | | | | | | | | | | computing {TopDown,BottomUp}PathCounts and do nothing if it occured." This reverts commit r187941. The commit was passing on my os x box, but it is failing on some non-osx platforms. I do not have time to look into it now, so I am reverting and will recommit after I figure this out. llvm-svn: 187946
* [objc-arc] Track if we encountered an additive overflow while computing ↵Michael Gottesman2013-08-071-3/+1063
| | | | | | | | {TopDown,BottomUp}PathCounts and do nothing if it occured. rdar://14590914 llvm-svn: 187941
* [objc-arc] Ensure that the cfg path count does not overflow when we multiply ↵Michael Gottesman2013-06-071-3/+531
| | | | | | | | TopDownPathCount/BottomUpPathCount. rdar://12480535 llvm-svn: 183489
* Detect overflow in the path count computation. rdar://12277446.Dan Gohman2012-09-121-0/+329
llvm-svn: 163739
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