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6 Commits

Author SHA1 Message Date
Hal Finkel
fbe935edc1 [CFLAA] Remove one final initializer list 
Maybe MSVC will be happy now...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217000 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-09-03 00:06:47 +00:00
Hal Finkel
b38c0b8f58 [CFLAA] And even more MSVC fixes 
Remove a couple more initializer lists and constexpr dependencies.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216998 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-09-02 23:50:01 +00:00
Hal Finkel
fa5d491ae4 [CFLAA] More cleanup for MSVC 
Remove more initializer lists, etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216994 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-09-02 23:29:48 +00:00
Hal Finkel
8de4282206 [CFLAA] No initializer lists for MSVC 
MSVC 2012 does not understand initializer lists; remove them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216991 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-09-02 22:52:30 +00:00
Hal Finkel
ba709096bc [CFLAA] constexpr -> LLVM_CONSTEXPR 
Attempt to fix the MSVC build by not using constexpr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216979 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-09-02 22:13:00 +00:00
Hal Finkel
bf301d5670 Add a CFL Alias Analysis implementation 
This provides an implementation of CFL alias analysis (including some
supporting data structures). Currently, we don't have any extremely fancy
features, sans some interprocedural analysis (i.e. no field sensitivity, etc.),
and we do best sitting behind BasicAA + TBAA. In such a configuration, we take
~0.6-0.8% of total compile time, and give ~7-8% NoAlias responses to queries
TBAA and BasicAA couldn't answer when bootstrapping LLVM. In testing this on
other projects, we've seen up to 10.5% of queries dropped by BasicAA+TBAA
answered with NoAlias by this algorithm.

Patch by George Burgess IV (with minor modifications by me -- mostly adapting
some BasicAA tests), thanks!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216970 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-09-02 21:43:13 +00:00