On darwin, when trying to create compact unwind info, a .cfi_cfa_def
directive would case an llvm_unreachable() to be hit. Back off when we
see this directive and generate the regular DWARF style eh_frame.

rdar://15406518

llvm-svn: 194285

llvm-svn: 194284

llvm-svn: 194283

Thanks to Eric Christopher for the tips on the appropriate way to do this.

llvm-svn: 194282

llvm-svn: 194281

llvm-svn: 194280

This makes it consistent with -fdump-record-layouts, which was moved to
outs() in r186219.  My reasoning for going with stdout is that when one
of these options is present, the layouts are really a program output,
and shouldn't be interleaved with diagnostics, which are on stderr.

Reviewers: timurrrr

Differential Revision: http://llvm-reviews.chandlerc.com/D2127

llvm-svn: 194279

llvm-svn: 194278

LoopUnswitch's code simplification routine has logic to convert conditional
branches into unconditional branches, after unswitching makes the condition
constant, and then remove any blocks that renders dead. Unfortunately, this
code is dead, currently broken, and furthermore, has never been alive (at least
as far back at 2006).

No functionality change intended.

llvm-svn: 194277

Before:
  unsigned ContentSize =
      sizeof(int16_t) // DWARF ARange version number
      +
      sizeof(int32_t) // Offset of CU in the .debug_info section
      +
      sizeof(int8_t) // Pointer Size (in bytes)
      +
      sizeof(int8_t); // Segment Size (in bytes)

After:
  unsigned ContentSize =
      sizeof(int16_t)   // DWARF ARange version number
      + sizeof(int32_t) // Offset of CU in the .debug_info section
      + sizeof(int8_t)  // Pointer Size (in bytes)
      + sizeof(int8_t); // Segment Size (in bytes)

This fixes llvm.org/PR17687.

llvm-svn: 194276

Currently supported only with -Wthread-safety-beta.

llvm-svn: 194275

llvm-svn: 194274

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