Sorry for the massive commit, but I just wanted to knock this one down
and it is really straightforward.

There are still a couple trivial (i.e. not related to the content)
things left to fix:

- Use of raw HTML links where :doc:`...` and :ref:`...` could be used
  instead. If you are a newbie and want to help fix this it would make
  for some good bite-sized patches; more experienced developers should
  be focusing on adding new content (to this tutorial or elsewhere, but
  please _do not_ waste your time on formatting when there is such dire
  need for documentation (see docs/SphinxQuickstartTemplate.rst to get
  started writing)).

- Highlighting of the kaleidoscope code blocks (currently left as bare
  `::`).  I will be working on writing a custom Pygments highlighter for
  this, mostly as training for maintaining the `llvm` code-block's lexer
  in-tree. I want to do this because I am extremely unhappy with how it
  just "gives up" on the slightest deviation from the expected syntax
  and leaves the whole code-block un-highlighted.

  More generally I am looking at writing some Sphinx extensions and
  keeping them in-tree as well, to support common use cases that
  currently have no good solution (like "monospace text inside a link").

llvm-svn: 169343

x ^ -1.

Patch by David Majnemer.
rdar://12755626

llvm-svn: 169339

(TIL that Clang's -Wparentheses ignores 'x || y && "foo"' on purpose. Neat.)

llvm-svn: 169337

class of attributes. This makes it much easier to check for errors and to reuse
the code.

llvm-svn: 169336

LoopVectorizer: Increase the number of pointers that can be tested at runtime. If we cant prove statically that the pointers are disjoint then we add the runtime check. 

llvm-svn: 169334

llvm-svn: 169331

llvm-svn: 169325

reduction variable is not used outside the loop then we ran into an
endless loop. This change checks if we found the original PHI.

llvm-svn: 169324

Allow the central functions to be inlined, and use the argumentless
isHint() function when possible.

llvm-svn: 169319

  This change attempts to simplify (X^Y) -> X or Y in the user's context if we know that
only bits from X or Y are demanded.

  A minimized case is provided bellow. This change will simplify "t>>16" into "var1 >>16".

  =============================================================
  unsigned foo (unsigned val1, unsigned val2) {
    unsigned t = val1 ^ 1234;
    return (t >> 16) | t; // NOTE: t is used more than once.
  }
  =============================================================

  Note that if the "t" were used only once, the expression would be finally optimized as well.
However, with with this change, the optimization will take place earlier.

  Reviewed by Nadav, Thanks a lot!

llvm-svn: 169317

llvm-svn: 169315

using multiclass.

llvm-svn: 169314

The count attribute is more accurate with regards to the size of an array. It
also obviates the upper bound attribute in the subrange. We can also better
handle an unbound array by setting the count to -1 instead of the lower bound to
1 and upper bound to 0.

llvm-svn: 169312

llvm-svn: 169309

llvm-svn: 169308

This reapplies the fix for PR13303 now with more justification. Based on my
execution of the GDB 7.5 test suite this results in:

expected passes: 16101 -> 20890 (+30%)
unexpected failures: 4826 -> 637 (-77%)

There are 23 checks that used to pass and now fail. They are all in
gdb.reverse. Investigating a few looks like they were accidentally passing
due to extra breakpoints being set by this bug. They're generally due to the
difference in end location between gcc and clang, the test suite is trying to
set breakpoints on the closing '}' that clang doesn't associate with any
instructions.

llvm-svn: 169304

llvm-svn: 169293

textually as NativeClient. Also added a link to the native client project for
readers unfamiliar with it.

A Clang patch will follow shortly.

llvm-svn: 169291

llvm-svn: 169288

instructions.

llvm-svn: 169287

llvm-svn: 169284

include .ll files. Fix that.

llvm-svn: 169283

llvm-svn: 169282

on 64-bit PowerPC ELF.

The patch includes code to handle external assembly and MC output with the
integrated assembler.  It intentionally does not support the "old" JIT.

For the initial-exec TLS model, the ABI requires the following to calculate
the address of external thread-local variable x:

 Code sequence            Relocation                  Symbol
  ld 9,x@got@tprel(2)      R_PPC64_GOT_TPREL16_DS      x
  add 9,9,x@tls            R_PPC64_TLS                 x

The register 9 is arbitrary here.  The linker will replace x@got@tprel
with the offset relative to the thread pointer to the generated GOT
entry for symbol x.  It will replace x@tls with the thread-pointer
register (13).

The two test cases verify correct assembly output and relocation output
as just described.

PowerPC-specific selection node variants are added for the two
instructions above:  LD_GOT_TPREL and ADD_TLS.  These are inserted
when an initial-exec global variable is encountered by
PPCTargetLowering::LowerGlobalTLSAddress(), and later lowered to
machine instructions LDgotTPREL and ADD8TLS.  LDgotTPREL is a pseudo
that uses the same LDrs support added for medium code model's LDtocL,
with a different relocation type.

The rest of the processing is straightforward.

llvm-svn: 169281

llvm-svn: 169280

of grep in favor of FileCheck, and other cleanups.

llvm-svn: 169269

think it adds much and keeping it up-to-date is (obviously) a chore.

llvm-svn: 169263

llvm-svn: 169256

llvm-svn: 169255

llvm-svn: 169253

Again, tools are trickier to pick the main module header for than
library source files. I've started to follow the pattern of using
LLVMContext.h when it is included as a stub for program source files.

llvm-svn: 169252

I've tried to find main moudle headers where possible, but the TableGen
stuff may warrant someone else looking at it.

llvm-svn: 169251

llvm-svn: 169250

llvm-svn: 169249

doesn't look like it will have C++ code in it.

Suggestions on a better heuristic are welcome.

llvm-svn: 169248

trees. This allows running the input sorter on the entire clang
repository cleanly now.

llvm-svn: 169247

the system headers.

llvm-svn: 169242

FIXME: I have not checked whether to be compiled on msvc11.
llvm-svn: 169225

missed in the first pass because the script didn't yet handle include
guards.

Note that the script is now able to handle all of these headers without
manual edits. =]

llvm-svn: 169224

llvm-svn: 169223