[Sema] Revert the change in r200622 that allowed integer casts to silence -Wnon-literal-null-conversion in C code.

It is actually useful to warn in such cases, thanks to Dmitri for pushing on this and making us see the light!

Related to rdar://15925483 and rdar://15922612. The latter radar is where the usefulness of the warning is most clear.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201165 91177308-0d34-0410-b5e6-96231b3b80d8
Test commit -- Remove an extra newline from Toolchains.cpp


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201172 91177308-0d34-0410-b5e6-96231b3b80d8
MS ABI: Add support for the -vm{b,g,s,m,v} flags

These flags control the inheritance model initially used by the
translation unit.

Differential Revision: http://llvm-reviews.chandlerc.com/D2741


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201175 91177308-0d34-0410-b5e6-96231b3b80d8
Remove bad debug info test.

This test case doesn't belong in Clang (it's testing IndVarSimplify) but
in an effort to reproduce the test case this was intended to cover (by
essentially reverting r134441) I wasn't able to reproduce the failure
this test case should've produced. So I haven't ported this down to
LLVM, instead I'm just deleting it.

I suspect the test is just underconstrained, but I've no great interest
in trying hard to fix it right now - if anyone else wants to, I'd be
more than welcome to that.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201178 91177308-0d34-0410-b5e6-96231b3b80d8
update of the clang version (should probably managed in the configure)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201182 91177308-0d34-0410-b5e6-96231b3b80d8
Remove bad debug info test.

Another test that's testing through assembly from Clang which is
problematic. An attempt to upgrade this to just be an IR-generation test
was unsuccessful (I was unable to get this test to fail) but it looks
like there's other, better, test coverage in this area
(test/CodeGenObjC/debuginfo-properties.m) anyway.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201183 91177308-0d34-0410-b5e6-96231b3b80d8
Expose the name of the checker producing each diagnostic message.

Summary:
In clang-tidy we'd like to know the name of the checker producing each
diagnostic message. PathDiagnostic has BugType and Category fields, which are
both arbitrary human-readable strings, but we need to know the exact name of the
checker in the form that can be used in the CheckersControlList option to
enable/disable the specific checker.

This patch adds the CheckName field to the CheckerBase class, and sets it in
the CheckerManager::registerChecker() method, which gets them from the
CheckerRegistry.

Checkers that implement multiple checks have to store the names of each check
in the respective registerXXXChecker method.

Reviewers: jordan_rose, krememek

Reviewed By: jordan_rose

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2557

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201186 91177308-0d34-0410-b5e6-96231b3b80d8
Fix build error caused by r201186 (GCC's "declaration of X changes meaning of Y").


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201189 91177308-0d34-0410-b5e6-96231b3b80d8
MS ABI: vptr injection should obey alignment requirements

vptr injection must inject padding equivalent to the alignment of the
most aligned non-virtual subobject, not the alignment of the enclosing
record.

To fascilitate this change, don't let record layout observe the
alignment of the record until we've injected our vptrs. Also, do not
allow the alignment of vbases to affect required alignment until just
before we insert the vtordisp field.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201199 91177308-0d34-0410-b5e6-96231b3b80d8
Add Multilib selection machinery

This patch improves the support for picking Multilibs from gcc installations.
It also provides a better approximation for the flags '-print-multi-directory'
and '-print-multi-lib'.

review: http://llvm-reviews.chandlerc.com/D2538


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201202 91177308-0d34-0410-b5e6-96231b3b80d8
Revert 201202

Breaks cmake configure of new unit tests directory


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201203 91177308-0d34-0410-b5e6-96231b3b80d8
Add Multilib selection machinery

This patch improves the support for picking Multilibs from gcc installations.
It also provides a better approximation for the flags '-print-multi-directory'
and '-print-multi-lib'.

This reverts r201203 (i.e. re-applying r201202 with small fixes in
unittests/CMakeLists.txtto make the build bots happy).

review: http://llvm-reviews.chandlerc.com/D2538


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201205 91177308-0d34-0410-b5e6-96231b3b80d8
Fix r201205's use-after-free bug caught by sanitizer bot


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201209 91177308-0d34-0410-b5e6-96231b3b80d8
Fix memory leak introduced by r201010.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201220 91177308-0d34-0410-b5e6-96231b3b80d8
[ARM] Fix NEON wrongly being enabled with soft-float when targeting armv8/Cortex-A53/A57.

This was caused by r200708 which enabled the crypto feature for these cores.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201223 91177308-0d34-0410-b5e6-96231b3b80d8
Add an option to allow Clang verify source files for a module only once during
the build

When Clang loads the module, it verifies the user source files that the module
was built from.  If any file was changed, the module is rebuilt.  There are two
problems with this:
1. correctness: we don't verify system files (there are too many of them, and
   stat'ing all of them would take a lot of time);
2. performance: the same module file is verified again and again during a
   single build.

This change allows the build system to optimize source file verification.  The
idea is based on the fact that while the project is being built, the source
files don't change.  This allows us to verify the module only once during a
single build session.  The build system passes a flag,
-fbuild-session-timestamp=, to inform Clang of the time when the build started.
The build system also requests to enable this feature by passing
-fmodules-validate-once-per-build-session.  If these flags are not passed, the
behavior is not changed.  When Clang verifies the module the first time, it
writes out a timestamp file.  Then, when Clang loads the module the second
time, it finds a timestamp file, so it can compare the verification timestamp
of the module with the time when the build started.  If the verification
timestamp is too old, the module is verified again, and the timestamp file is
updated.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201224 91177308-0d34-0410-b5e6-96231b3b80d8
'svn add' files I forgot for r201224 (Add an option to allow Clang verify
source files for a module only once during)


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201225 91177308-0d34-0410-b5e6-96231b3b80d8
clang/lib/Driver/Multilib.cpp: Rewrite normalizePathSegment() to be tolerant dosish pathsep.

FIXME: It could be more simple...

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201227 91177308-0d34-0410-b5e6-96231b3b80d8
clang/test/Modules/fmodules-validate-once-per-build-session.c: Tweak for gnuwin32 with %/t (instead of %t).

xargs didn't handle dosish paths, while find foo\bar\ emits dosish paths.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201228 91177308-0d34-0410-b5e6-96231b3b80d8
Don't use find | xargs in test/Modules/fmodules-validate-once-per-build-session.c

With -fdisable-module-hash, we can implement this with a simple 'cp'.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201231 91177308-0d34-0410-b5e6-96231b3b80d8