[Lex] Add support for 'user specified system frameworks' (see test case).
 - Developers of system frameworks need a way for their framework to be treated as a "system framework" during development. Otherwise, they are unable to properly test how their framework behaves when installed because of the semantic changes (in warning behavior) applied to system frameworks.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154105 91177308-0d34-0410-b5e6-96231b3b80d8
Temporary workaround for bug#12457: turn the 'constexpr function never produces
a constant expression' error into a DefaultError ExtWarn, so that it can be
disabled and is suppressed in system headers. libstdc++4.7 contains some such
functions which we currently can't evaluate as constant expressions.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154115 91177308-0d34-0410-b5e6-96231b3b80d8
Move some MIPS target macro definitions from class Mips32TargetInfoBase
to the base class MipsTargetInfoBase. These macros are applicable for both
32/64-bits targets.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154116 91177308-0d34-0410-b5e6-96231b3b80d8
Require that all static analyzer issues have a category.  As part of this change,
consolidate some commonly used category strings into global references (more of this can be done, I just did a few).

Fixes <rdar://problem/11191537>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154121 91177308-0d34-0410-b5e6-96231b3b80d8
Make the variant of __builtin_shufflevector that takes the shuffle indexes as a vector actually usable. Patch by David Neto.  PR12465.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154128 91177308-0d34-0410-b5e6-96231b3b80d8
Only emit the getter and setter names if they're not the default
synthesized ones. Reasonable debug info size reduction for objc.

rdar://11179756

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154129 91177308-0d34-0410-b5e6-96231b3b80d8
Enhance testing a bit to make sure that we're omitting the
getter and setter when they're synthesized with the default
names.

rdar://11179756

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154130 91177308-0d34-0410-b5e6-96231b3b80d8
objective-c: Don't warn when a category does not implement a method
declared in its adopted protocol when another category declares it  
because that category will implement it. // rdar://11186449


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154132 91177308-0d34-0410-b5e6-96231b3b80d8
Properly implement the C rules for composite types for qualified pointers in conditionals.  Patch by Tim Northover.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154134 91177308-0d34-0410-b5e6-96231b3b80d8
Implement C90 pedantic warning for duplicate declaration specifiers which are duplicated via a typedef.  Patch by Tim Northover.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154136 91177308-0d34-0410-b5e6-96231b3b80d8
Point the caret at the error for the 'expected namespace name' diagnostic in
a namespace alias declaration.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154138 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer]Fix false positive: pointer might escape through CG*WithData.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154156 91177308-0d34-0410-b5e6-96231b3b80d8
Restrict fixit for missing 'class' in template template parameters.

Based on Doug's feedback to r153887 this omits the FixIt if the following token
isn't syntactically valid for the context. (not a comma, '...', identifier,
'>', or '>>')

There's a bunch of work to handle the '>>' case, but it makes for a much more
pleasant diagnostic in this case.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154163 91177308-0d34-0410-b5e6-96231b3b80d8
Fix diagnostic text for r154163.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154164 91177308-0d34-0410-b5e6-96231b3b80d8
MIPS: Add tests for predefined macros for MIPS targets.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154168 91177308-0d34-0410-b5e6-96231b3b80d8
Fixed scoping error for late parsed attributes in nested classes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154173 91177308-0d34-0410-b5e6-96231b3b80d8
zext ivar offsets if required (GNU runtimes).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154175 91177308-0d34-0410-b5e6-96231b3b80d8
Fix using Clang as a cross compiler installed on a host machine and not
inside of a sysroot targeting a system+sysroot which is "similar" or
"compatible" with the host system. This shows up when trying to build
system images on largely compatible hardware as-if fully cross compiled.

The problem is that previously we *perfectly* mimiced GCC here, and it
turns out GCC has a bug that no one has really stumbled across. GCC will
try to look in thy system prefix ('/usr/local' f.ex.) into which it is
instaled to find libraries installed along side GCC that should be
preferred to the base system libraries ('/usr' f.ex.). This seems not
unreasonable, but it has a very unfortunate consequence when combined
with a '--sysroot' which does *not* contain the GCC installation we're
using to complete the toolchain. That results in some of the host
system's library directories being searched during the link.

Now, it so happens that most folks doing stuff like this use
'--with-sysroot' and '--disable-multilib' when configuring GCC. Even
better, they're usually not cross-compiling to a target that is similar
to the host. As a result, searching the host for libraries doesn't
really matter -- most of the time weird directories get appended that
don't exist (no arm triple lib directory, etc). Even if you're
cross-compiling from 32-bit to 64-bit x86 or vice-versa, disabling
multilib makes it less likely that you'll actually find viable libraries
on the host. But that's just luck. We shouldn't rely on this, and this
patch disables looking in the system prefix containing the GCC
installation if that system prefix is *outside* of the sysroot. For
empty sysroots, this has no effect. Similarly, when using the GCC
*inside* of the sysroot, we still track wherever it is installed within
the sysroot and look there for libraries. But now we can use a cross
compiler GCC installation outside the system root, and only look for the
crtbegin.o in the GCC installation, and look for all the other libraries
inside the system root.

This should fix PR12478, allowing Clang to be used when building
a ChromiumOS image without polluting the image with libraries from the
host system.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154176 91177308-0d34-0410-b5e6-96231b3b80d8
MIPS: Move tests check float ABI macros definitions to the more appropriate place.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154184 91177308-0d34-0410-b5e6-96231b3b80d8
Added a new attribute, objc_root_class, which informs the compiler when a root class is intentionally declared.
The warning this inhibits, -Wobjc-root-class, is opt-in for now. However, all clang unit tests that would trigger
the warning have been updated to use -Wno-objc-root-class. <rdar://problem/7446698>


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154187 91177308-0d34-0410-b5e6-96231b3b80d8