Otherwise, assembler (gas) fails to assemble them with error message "operation
combines symbols in different segments". This is because MC computes
pc_rel entries with subtract expression between labels from different sections.

llvm-svn: 200373

because of the inside-out run of LoopSimplify in the LoopPassManager and
the fact that LoopSimplify couldn't be "preserved" across two
independent LoopPassManagers.

Anyways, in that case, IndVars wasn't correctly preserving an LCSSA PHI
node because it thought it was rewriting (via SCEV) the incoming value
to a loop invariant value. While it may well be invariant for the
current loop, it may be rewritten in terms of an enclosing loop's
values. This in and of itself is fine, as the LCSSA PHI node in the
enclosing loop for the inner loop value we're rewriting will have its
own LCSSA PHI node if used outside of the enclosing loop. With me so
far?

Well, the current loop and the enclosing loop may share an exiting
block and exit block, and when they do they also share LCSSA PHI nodes.
In this case, its not valid to RAUW through the LCSSA PHI node.

Expected crazy test included.

llvm-svn: 200372

When estimating register pressure, don't count the induction variable mulitple
times. It is unlikely to be unrolled. This is currently disabled and hidden
behind a flag ("enable-ind-var-reg-heur").

llvm-svn: 200371

llvm-svn: 200370

We need to increase the memory and the filesize when we add a typeZeroFillQuick
atom.

llvm-svn: 200369

[SparcV9] Use correct register class (I64RegClass) to hold the address of  _GLOBAL_OFFSET_TABLE_ in sparcv9.

llvm-svn: 200368

This is a bit more convenient for some callers, but more importantly, it is
easier to implement correctly. Doing this removes the patching of already
printed data that was used for fastcall, fixing a crash with private fastcall
symbols.

llvm-svn: 200367

llvm-svn: 200366

When the scalar compare is between floating point and operands are
vector, we custom lower SELECT_CC to use NEON SIMD compare for
generating less instructions.

llvm-svn: 200365

(reviewed by Marshall Clow)

llvm-svn: 200364

We should suggest using /Tc or /Tp to set the input type, instead of
erroneously suggesting -x, which isn't a clang-cl flag.

llvm-svn: 200362

llvm-svn: 200361

The default value of this attribute is PTHREAD_PROCESS_PRIVATE, so
there's no point in calling pthread_mutexattr_setpshared() to set
that.

See: http://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_mutexattr_getpshared.html

This removes some ifdefs that tend to need to be extended for other
platforms (e.g. for NaCl).

Note that this call was in the first implementation of Mutex, added in
r22403, so it doesn't appear to have been added in response to a
performance problem.

Differential Revision: http://llvm-reviews.chandlerc.com/D2633

llvm-svn: 200360

grow into the following virtual base.

Differential Revision: http://llvm-reviews.chandlerc.com/D2560

llvm-svn: 200359

Use an RAII object Instead of inserting a call to
AsmLexer::setSkipSpace(true) in all error paths.

No functional change.

llvm-svn: 200358

This will be better with c++11, but right now file_magic converts to bool,
which makes the api really easy to misuse.

llvm-svn: 200357

cast into a boolean true value.  This warning will catch code like:

if (@0) {}
if (@"foo") {}

llvm-svn: 200356

Oops. Don't do build tests on patches like that with --enable-targets=x86_64

llvm-svn: 200355

I assume that the name is file_type because it is the name of a c++11 type that
we will use once we convert, but at least our current implementation can look
like llvm code.

Thanks to David Blakie for the push.

llvm-svn: 200354

llvm-svn: 200353

llvm-svn: 200352

1. test that inlineasm works
2. test that relaxable instructions are re-encoded in the correct mode.

llvm-svn: 200351

The subtarget info is explicitly passed to the EncodeInstruction
method and we should use that subtarget info to influence any
encoding decisions.

llvm-svn: 200350

llvm-svn: 200349

llvm-svn: 200348

Needed to fix PR18303 to correctly re-encode the instruction if it
is relaxed.

We keep a copy of the MCSubtargetInfo to make sure that we are not
effected by future changes to the subtarget info coming from the
assembler (e.g. when parsing .code 16 directived).

llvm-svn: 200347

Add MCSubtargetInfo parameter
virtual void EmitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &);
virtual void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &);

llvm-svn: 200346

llvm-svn: 200345

This makes sure that the ms-intrin.cpp test passes by providing
a mock setjmp.h as a test input.

llvm-svn: 200344

llvm-svn: 200343

was not being overridden in the category method implementation
resulting in bogus warning. // rdar://15919775

llvm-svn: 200342

llvm-svn: 200341

Reviewed at http://llvm-reviews.chandlerc.com/D2232

llvm-svn: 200340

instead of crashing.  // rdar://15824769.

llvm-svn: 200338

Before:
  ReturnType __attribute__((unused))
      function(int i);

After:
  ReturnType __attribute__((unused))
  function(int i);

This fixes llvm.org/PR18632.

llvm-svn: 200337

llvm-svn: 200335

llvm-svn: 200333

As opposed to GCC/GAS the default ABI for Mips64 is n64.
Compatibility bit should be set if o32 ABI is used when targeting Mips64.

llvm-svn: 200332

Makes it easy to use BumpPtrAllocator to make a copy of StringRef strings.

llvm-svn: 200331

llvm-svn: 200328