Update testcase for r177340.

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PR15539: Record "evaluating if/elif condition" flag in the right place

The previous implementation missed the case where the elif condition was
evaluated from the context of an #ifdef that was false causing PR15539.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@177345 91177308-0d34-0410-b5e6-96231b3b80d8
Test case for r177347.

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[analyzer] Replace uses of assume() with isNull() in BR visitors.

Also, replace a std::string with a SmallString.

No functionality change.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@177352 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer] Do part of the work to find shortest bug paths up front.

Splitting the graph trimming and the path-finding (r177216) already
recovered quite a bit of performance lost to increased suppression.
We can still do better by also performing the reverse BFS up front
(needed for shortest-path-finding) and only walking the shortest path
for each report. This does mean we have to walk back up the path and
invalidate all the BFS numbers if the report turns out to be invalid,
but it's probably still faster than redoing the full BFS every time.

More performance work for <rdar://problem/13433687>

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@177353 91177308-0d34-0410-b5e6-96231b3b80d8
Diagnose uses of 'alignof' on functions in -pedantic mode.


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@177354 91177308-0d34-0410-b5e6-96231b3b80d8
documentation comment parsing. Added couple of 
top-level HeaderDoc tags @functiongroup and
@methodgroup to doc. tags recognized.
// rdar://12379114 


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@177358 91177308-0d34-0410-b5e6-96231b3b80d8
[libclang] Modify clang_getCursorType to be able to handle a function template decl.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@177359 91177308-0d34-0410-b5e6-96231b3b80d8
Centralize the logic for using the integrated assembler.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@177360 91177308-0d34-0410-b5e6-96231b3b80d8