llvm/lib/Analysis, branch release_23

Merge from mainline.

2008-05-22T04:58:33Z

uppress gcc3.4.6's warnings git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_23@51412 91177308-0d34-0410-b5e6-96231b3b80d8

put LibCallAliasAnalysis into anonymous namespace to avoid

2008-05-09T20:35:45Z

clashes on ::X git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50912 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dead return. Thanks to Bill for the review!

2008-05-08T18:26:56Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50863 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for constant folding the 'offsetof' pattern even if the

2008-05-08T04:54:43Z

base is not zero. This fixes test/C++Frontend/2008-05-07-CrazyOffsetOf.cpp git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50840 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new LibCallAliasAnalysis pass, which is parameterized

2008-05-07T19:53:05Z

by an instance of LibCallInfo to provide mod/ref info of standard library functions. This is powerful enough to say that 'sqrt' is readonly except that it modifies errno, or that "printf doesn't store to memory unless the %n constraint is present" etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50827 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new interface for describing the behavior of library calls. This

2008-05-07T18:21:13Z

Currently is sufficient to describe mod/ref behavior but will hopefully eventually be extended for other purposes. This isn't used by anything yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50820 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo and indentation.

2008-05-06T04:03:18Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50706 91177308-0d34-0410-b5e6-96231b3b80d8

Make several variable declarations static.

2008-05-06T01:53:16Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50696 91177308-0d34-0410-b5e6-96231b3b80d8

Remove uses of llvm/System/IncludeFile.h that are no longer needed.

2008-05-06T01:32:53Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50695 91177308-0d34-0410-b5e6-96231b3b80d8

Implement destructor for PostDominatorTree to eliminate a memory leak.

2008-05-03T20:25:26Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50607 91177308-0d34-0410-b5e6-96231b3b80d8