Further reduce "-fsyntax-only -Wuninitialized" time on sqlite3.c by another 2.5% using intelligent pruning of blocks during the final reporting pass.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168257 91177308-0d34-0410-b5e6-96231b3b80d8
Remove copy ctor that provides no value over the default.

It's also simpler to just copy the words than mangling bits like this ctor did.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168258 91177308-0d34-0410-b5e6-96231b3b80d8
Enable inlining of 4 byte atomic ops on ppc32, 8 byte atomic ops on ppc64.

Also fixes a bit/byte mismatch when checking if a target supports atomic ops of a certain size.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168260 91177308-0d34-0410-b5e6-96231b3b80d8
Fix handling of invalid uses of the __has_warning builtin macro

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168265 91177308-0d34-0410-b5e6-96231b3b80d8
Refactored duplicate string literal lexing code within Preprocessor, into a
common LexStringLiteral function.  In doing so, some consistency problems have
been ironed out (e.g. where the first token in the string literal was lexed
with macro expansion, but subsequent ones were not) and also an erroneous
diagnostic has been corrected.

LexStringLiteral is complemented by a FinishLexStringLiteral function which
can be used in the situation where the first token of the string literal has
already been lexed.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168266 91177308-0d34-0410-b5e6-96231b3b80d8
Made the "expected string literal" diagnostic more expressive

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168267 91177308-0d34-0410-b5e6-96231b3b80d8
Prevent premature macro expansion in __has_builtin, __has_feature,
__has_attribute, __has_extension, making them behave more akin to
conventional macros.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168268 91177308-0d34-0410-b5e6-96231b3b80d8
Fix crash on end-of-file after \ in a char literal, fixes PR14369.

This makes LexCharConstant() look more like LexStringLiteral(), which doesn't
have this bug. Add tests for eof after \ for several other cases.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168269 91177308-0d34-0410-b5e6-96231b3b80d8
objective-C: Do not issue deprecated warning about implementation
of a deprecated method in original class (or category), only
in overrides. // rdar://12717705


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168270 91177308-0d34-0410-b5e6-96231b3b80d8
Clean up code according to coding standards

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168274 91177308-0d34-0410-b5e6-96231b3b80d8
Fix Doxygen comment start sequence.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168276 91177308-0d34-0410-b5e6-96231b3b80d8
Documentation parsing: propely handle a lone '\endverbatim' and emit a warning.

We actually used to assert on this.

Thanks to NAKAMURA Takumi for noticing this!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168277 91177308-0d34-0410-b5e6-96231b3b80d8
clang/test/Sema/warn-documentation.cpp: Try to fix up the testcase in r168277.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168278 91177308-0d34-0410-b5e6-96231b3b80d8
Remove redundant (duplicated) check.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168293 91177308-0d34-0410-b5e6-96231b3b80d8
RecursiveASTVisitor.h: Rework Doug's r160404, "Eliminating the GCC_CAST hack, take two."

With this, ARCMT tests would not crash on certain hosts with g++ -O2, eg. cygwin g++-4.5.3.

r160404 crashed mingw32-g++-4.4.0. I guess method's pointer in conditional expression could not be handled.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168295 91177308-0d34-0410-b5e6-96231b3b80d8
Remove a no-op 'const' from a by-value return type.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168296 91177308-0d34-0410-b5e6-96231b3b80d8
Completely re-work how the Clang driver interprets PIC and PIE options.

There were numerous issues here that were all entangled, and so I've
tried to do a general simplification of the logic.
1) The logic was mimicing actual GCC bugs, rather than "features". These
   have been fixed in trunk GCC, and this fixes Clang as well. Notably,
   the logic was always intended to be last-match-wins like any other
   flag.
2) The logic for handling '-mdynamic-no-pic' was preposterously unclear.
   It also allowed the use of this flag on non-Darwin platforms where it
   has no actual meaning. Now this option is handled directly based on
   tests of how llvm-gcc behaves, and it is only supported on Darwin.
3) The APIs for the Driver's ToolChains had the implementation ugliness
   of dynamic-no-pic leaking through them. They also had the
   implementation details of the LLVM relocation model flag names
   leaking through.
4) The actual results of passing these flags was incorrect on Darwin in
   many cases. For example, Darwin *always* uses PIC level 2 if it uses
   in PIC level, and Darwin *always* uses PIC on 64-bit regardless of
   the flags specified, including -fPIE. Darwin never compiles in PIE
   mode, but it can *link* in PIE mode.
5) Also, PIC was not always being enabled even when PIE was. This isn't
   a supported mode at all and may have caused some fallout in builds
   with complex PIC and PIE interactions.

The result is (I hope) cleaner and clearer for readers. I've also left
comments and tests about some of the truly strage behavior that is
observed on Darwin platforms. We have no real testing of Windows
platforms and PIC, but I don't have the tools handy to figure that out.
Hopefully others can beef up our testing here.

Unfortunately, I can't test this for every platform. =/ If folks have
dependencies on these flags that aren't covered by tests, they may
break. I've audited and ensured that all the changes in behavior of the
existing tests are intentional and good. In particular I've tried to
make sure the Darwin behavior (which is more suprising than the Linux
behavior) also matches that of 'gcc' on my mac.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168297 91177308-0d34-0410-b5e6-96231b3b80d8
clang/test: Suppress two tests on LLP64 target, Windows x64.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168303 91177308-0d34-0410-b5e6-96231b3b80d8
Enable -fuse-init-array for Android X86/MIPS.

The dynamic linker of Android does not support .ctors/.dtors.
We should emit .init_array and .fini_array regardless the
gcc version.

NOTE: This patch does not affect the ARM backend, because
it is required to generate .init_array and .fini_array
for program targeting ARM AAPCS and AEABI.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168309 91177308-0d34-0410-b5e6-96231b3b80d8
Add -ldl for non-static libgcc in Android.

According to Android ABI, we have to link with
libdl.so, if we are linking with non-static libgcc.

Besides, this also fixes MIPS link error of
undefined references to `_Unwind_Find_FDE' and
`dl_iterate_phdr'.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168310 91177308-0d34-0410-b5e6-96231b3b80d8