support.

llvm-svn: 194273

Temporarily revert my previous commit until I understand why it breaks 3 target tests.

llvm-svn: 194272

isPhysRegUsed if the unwind information is required.
Indeed, the runtime may need a correct stack to be able to unwind the call.

llvm-svn: 194271

llvm-svn: 194270

Based on discussions with Lang Hames and Jakob Stoklund Olesen at the hacker's lab, and in the light of upcoming work on the PBQP register allocator, it was though that CalcSpillWeights does not need to be a pass. This change will enable to customize / tune the spill weight computation depending on the allocator.

Update the documentation style while there.

No functionnal change.

llvm-svn: 194269

This fixes llvm.org/PR17842.

llvm-svn: 194268

Before:
  popup_wdow_.reset([[RenderWidgetPopupWindow alloc]
      iniithContentRect:
          NSMakRet(origin_global.x, origin_global.y, pos.width(), pos.height())
                syeMask:NSBorderlessWindowMask
                  bking:NSBackingStoreBuffered
                    der:NO]);
  [self param:function( //
      parameter)]

After:
  popup_wdow_.reset([[RenderWidgetPopupWindow alloc]
      iniithContentRect:NSMakRet(origin_global.x, origin_global.y, pos.width(),
                                 pos.height())
                syeMask:NSBorderlessWindowMask
                  bking:NSBackingStoreBuffered
                    der:NO]);
  [self param:function( //
                  parameter)]

llvm-svn: 194267

Useful for tri-state maps: true, false, and "no data yet".

llvm-svn: 194266

I've added the missing ImutProfileInfo [sic] specialization for bool,
so this patch on r194235 is no longer needed.

This reverts r194244 / 2baea2887dfcf023c8e3560e5d4713c42eed7b6b.

llvm-svn: 194265

ARM prologues usually look like:
    push {r7, lr}
    sub sp, sp, #4

If code size is extremely important, this can be optimised to the single
instruction:
    push {r6, r7, lr}

where we don't actually care about the contents of r6, but pushing it subtracts
4 from sp as a side effect.

This should implement such a conversion, predicated on the "minsize" function
attribute (-Oz) since I've yet to find any code it actually makes faster.

llvm-svn: 194264

[ARM] Handling for coprocessor instructions that are undefined starting from ARMv8 (Thumb encodings)

llvm-svn: 194263

llvm-svn: 194262

llvm-svn: 194261

llvm-svn: 194260

llvm-svn: 194259

llvm-svn: 194258

Linux cannot open directories with open(2), although cygwin and *bsd can.

Motivation: The test, Object/directory.ll, had been failing with --target=cygwin on Linux. XFAIL was improper for host issues.
llvm-svn: 194257

Reviewed at http://llvm-reviews.chandlerc.com/D2120

llvm-svn: 194256

The encoding was updated in MSA r1.07.

llvm-svn: 194255

llvm-svn: 194254

[ARM] In ARMAsmParser, MatchCoprocessorOperandName() permitted p10 and p11 as operands for coprocessor instructions, resulting in encodings that clash with FP/NEON instruction encodings

llvm-svn: 194253

These definitions are required by the standard.  MSVC rejecting them
appears to be a bug.

llvm-svn: 194252

llvm-svn: 194251

Switch clang-format over to Rewriter::overwriteChangedFiles().

The previous implementation was attempting to stream back directly to the
original file and failing if it was already memory mapped by MemoryBuffer,
an operation unsupported by Windows.

MemoryBuffer generally mmaps files larger than the physical page size so
this will have been difficult to reproduce consistently.

This change also reduces flicker in code editors and IDEs on all platforms
when reformatting in-place.

Note that other incorrect uses of MemoryBuffer exist in LLVM/clang and
will need a similar fix.

A test should be added for Windows when libFormat performance issues are
fixed (it takes longer than a day to format a 1MB file at present!)

llvm-svn: 194250

It's better to test clang-check rather than the internal c-index-test utility.

Also adds a target so we can remove the XFAILs.

Thanks to Richard Barton for spotting the test failure on ARM.

Test originally from r193685.

llvm-svn: 194249

A column limit in the test folder can lead to trouble as the RUN, CHECK,
etc. comments can potentially be broken over multiple lines changing
their meaning. Without column limit, clang-format will simply keep the
test author's line breaks.

llvm-svn: 194248

llvm-svn: 194247

clang/test/CXX/drs/dr1xx.cpp: Add explicit triple x86_64-unknown-unknown to satisfy check7a and check8a since r194240.

For i686 targets and LLP64 targets, we can see;
  error: 'error' diagnostics seen but not expected:
    File clang/test/CXX/drs/dr1xx.cpp Line 761: 'check7a' declared as an array with a negative size
    File clang/test/CXX/drs/dr1xx.cpp Line 765: 'check8a' declared as an array with a negative size
  2 errors generated.

llvm-svn: 194246

Still working out some of the details of these classes but 
I wanted to get the overall structure checked in.
<rdar://problem/15314068> 

llvm-svn: 194245

StaticAnalyzer/Checkers/BasicObjCFoundationChecks.cpp: Tweak ContainerNonEmptyMap with "int" instead of "bool", to appease building since r194235.

In ADT/ImmutableSet, ImutProfileInfo<bool> cannot be matched to ImutProfileInteger.
I didn't have idea it'd the right way if PROFILE_INTEGER_INFO(bool) could be added there.

llvm-svn: 194244

GEP expressions were folded differently from before, change the tests to
reflect this.

llvm-svn: 194243

llvm-svn: 194242

Before:
  [self // break
      a:a
     aa:aa
  aaaaa:aaa];

After:
  [self // break
          a:a
         aa:aa
      aaaaa:aaa];

llvm-svn: 194241

llvm-svn: 194240

Under ARC++, a reference to a const Objective-C pointer is implicitly
treated as __unsafe_unretained, and can be initialized with (e.g.) a
__strong lvalue. Make sure this behavior does not break template
argument deduction and (related) that partial ordering still prefers a
'T* const&' template over a 'T const&' template when this case kicks
in. Fixes <rdar://problem/14467941>.

llvm-svn: 194239

last patch.

llvm-svn: 194238

llvm-svn: 194237

This syntactic checker looks for expressions on both sides of comparison
operators that are structurally the same. As a special case, the
floating-point idiom "x != x" for "isnan(x)" is left alone.

Currently this only checks comparison operators, but in the future we could
extend this to include logical operators or chained if-conditionals.

Checker by Per Viberg!

llvm-svn: 194236

An Objective-C for-in loop will have zero iterations if the collection is
empty. Previously, we could only detect this case if the program asked for
the collection's -count /before/ the for-in loop. Now, the analyzer
distinguishes for-in loops that had zero iterations from those with at
least one, and can use this information to constrain the result of calling
-count after the loop.

In order to make this actually useful, teach the checker that methods on
NSArray, NSDictionary, and the other immutable collection classes don't
change the count.

<rdar://problem/14992886>

llvm-svn: 194235

The path note that says "Loop body executed 0 times" has been changed to
"Loop body skipped when range is empty" for C++11 for-range loops, and to
"Loop body skipped when collection is empty" for Objective-C for-in loops.

Part of <rdar://problem/14992886>

llvm-svn: 194234