ASTContext::getCommentForDecl: add comment.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162374 91177308-0d34-0410-b5e6-96231b3b80d8
Math builtin definition tweaks.

There were missed optimizations when the system headers didn't have attributes
in place, specifically:

- Add copysign, exp2, log2, nearbyint, rint and trunc to the list.
  These are functions that get inlined by LLVM's optimizer, but only when they
  have the right attributes.
- Mark copysign, fabs, fmax, fmin and trunc const unconditionally.
  Previously these were only const with -fno-math-errno, but they never set
  errno per POSIX.

For ceil/floor/nearbyint/round I'm not aware of any implementation that sets
errno, but POSIX says it may signal overflow so I left them alone for now.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162375 91177308-0d34-0410-b5e6-96231b3b80d8
Make ceil/floor/nearbyint/rint/round const even with -fmath-errno.

The conditions described by POSIX can never happen with IEEE-754 floats.
When the function is const we can emit a single sse4.1 instruction for
it, without losing anything :)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162379 91177308-0d34-0410-b5e6-96231b3b80d8
[ms-inline asm] Start sending non-simple inline asms to the AsmParser.

The parser still can't handle all cases, so fall back to emitting a simple
MSAsmStmt if we get into trouble.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162382 91177308-0d34-0410-b5e6-96231b3b80d8
Remove BasicConstraintManager.  It hasn't been in active service for a while.

As part of this change, I discovered that a few of our tests were not testing
the RangeConstraintManager.  Luckily all of those passed when I moved them
over to use that constraint manager.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162384 91177308-0d34-0410-b5e6-96231b3b80d8
[ms-inline asm] Simplify logic.  No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162385 91177308-0d34-0410-b5e6-96231b3b80d8
Despite me asking Jordan to do r162313, revert it.  We can provide
another way to whitelist these special cases.  This is an intermediate patch.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162386 91177308-0d34-0410-b5e6-96231b3b80d8
[ms-inline asm] Compute the token range for each instruction within the asm.
Eventually, we'll need a way of mapping tokens (and their IdentifierInfo*) to
the operands computed by buildMSAsmPieces().


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162388 91177308-0d34-0410-b5e6-96231b3b80d8
Reverted clang-check to fully supported CommandLine Library use-case: global
static variables.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162391 91177308-0d34-0410-b5e6-96231b3b80d8
[ms-inline asm] Simplify logic.  No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162392 91177308-0d34-0410-b5e6-96231b3b80d8
[ms-inline asm] Add helper function.  No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162393 91177308-0d34-0410-b5e6-96231b3b80d8
[ms-inline asm] Add comments.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162394 91177308-0d34-0410-b5e6-96231b3b80d8
[ms-inline asm] Add comments.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162396 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer] Add osx.cocoa.NonNilReturnValue checker.

The checker adds assumptions that the return values from the known APIs
are non-nil. Teach the checker about NSArray/NSMutableArray/NSOrderedSet
objectAtIndex, objectAtIndexedSubscript.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162398 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer] Add more comments to CallEvent and RuntimeDefinition.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162399 91177308-0d34-0410-b5e6-96231b3b80d8
[ms-inline asm] Refactor code so that we can begin computing the Inputs/Outputs.
No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162403 91177308-0d34-0410-b5e6-96231b3b80d8