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104 Commits

Author SHA1 Message Date
Duncan Sands
88e76757de Mention that this pass does escape analysis in the 
leading comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61548 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-01-01 20:45:19 +00:00
Duncan Sands
1010941954 Look through phi nodes and select instructions when 
calculating nocapture attributes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61535 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-31 20:21:34 +00:00
Duncan Sands
17da06ffbd Don't analyze arguments already marked 'nocapture'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61532 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-31 18:08:59 +00:00
Duncan Sands
9e89ba31f1 Rename AddReadAttrs to FunctionAttrs, and teach it how 
to work out (in a very simplistic way) which function
arguments (pointer arguments only) are only dereferenced
and so do not escape.  Mark such arguments 'nocapture'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61525 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-31 16:14:43 +00:00