This function is a generalization of getMatchingSuperRegClass() to the
symmetric case where both sides are using a sub-register index. It will
find a super-register class and sub-register indexes that make this
diagram commute:

                                   PreA
                       SuperRC  ---------->  RCA

                          |                   |
                          |                   |
                     PreB |                   | SubA
                          |                   |
                          |                   |
                          V                   V

                         RCB    ----------> SubRC
                                   SubB

This can be used to coalesce copies like:

  %vreg1:sub16 = COPY %vreg2:sub16; GR64:%vreg1, GR32: %vreg2

llvm-svn: 156317

single use.
rdar://11360370

llvm-svn: 156316

To solve the inconsistency pointed out in Erik's review, refactor class
hierarchy of ProgramPoints so that PreStmtPurgeDeadSymbols and
PostStmtPurgeDeadSymbols both subclass from StmtPoint instead of
PostStmt.

llvm-svn: 156315

Move the el_source() call after the section of code which sets up the default "ctrl-r" and "ctrl-w" bindings
so that user-provided .editrc has a chance to override the lldb's default key bindings.

llvm-svn: 156314

Fixes a -Woverflow warning from gcc when building for 32-bit platforms.

llvm-svn: 156313

This patch will optimize -(x != 0) on X86
FROM 
cmpl	$0x01,%edi
sbbl	%eax,%eax
notl	%eax
TO
negl %edi
sbbl %eax %eax

In order to generate negl, I added patterns in Target/X86/X86InstrCompiler.td:
def : Pat<(X86sub_flag 0, GR32:$src), (NEG32r GR32:$src)>;

rdar: 10961709
llvm-svn: 156312

remove code to add bound checks for simple array accesses, since those are already covered by the check with the objectsize builtin
remove the comparison of objectsize with -1. since it's an unsigned comparison, it will always succeed if objectsize returns -1, which is enough to have the check removed

llvm-svn: 156311

As per Jordy's and Ted's comment, use the default StopTracking summary
instead of adding all arguments to ScratchArs.

llvm-svn: 156310

SFINAE __bit_iterator such that it will only get instantiated with a container that has the nested type __storage_type.  This prevents accidental instantiation such as in http://llvm.org/bugs/show_bug.cgi?id=12755.  This fixes http://llvm.org/bugs/show_bug.cgi?id=12755.

llvm-svn: 156308

and occasionally failure to recognize instructions.
This problem affects ARM and Thumb BLX instructions.

llvm-svn: 156307

llvm-svn: 156306

llvm-svn: 156305

llvm-svn: 156304

llvm-svn: 156302

llvm-svn: 156301

llvm-svn: 156300

The chdir is not the perfect fix, as it is thread hostile. The
real fix will be to make -working-dir work correctly, which will
take time to implement. Before that, the tooling library cannot
be used concurrently.

llvm-svn: 156299

llvm-svn: 156298

overload candidate, and include its message in any subsequent 'candidate not
viable due to substitution failure' note we may produce.

To keep the note small (since the 'overload resolution failed' diagnostics are
often already very verbose), the text of the SFINAE diagnostic is included as
part of the text of the note, and any notes which were attached to it are
discarded.

There happened to be spare space in OverloadCandidate into which a
PartialDiagnosticAt could be squeezed, and this patch goes to lengths to avoid
unnecessary PartialDiagnostic copies, resulting in no slowdown that I could
measure. (Removal in passing of some PartialDiagnostic copies has resulted in a
slightly smaller clang binary overall.) Even on a torture test, I was unable to
measure a memory increase of above 0.2%.

llvm-svn: 156297

Convert AVX non-temporal store builtins to LLVM-native IR. This was previously done for SSE builtins.

llvm-svn: 156296

Patch by Jack Carter.

llvm-svn: 156295

Patch by Jack Carter.

llvm-svn: 156294

Patch by Jack Carter.

llvm-svn: 156293

Patch by Jack Carter.

llvm-svn: 156292

so that we actually accumulate all the delayed diagnostics.  Do
this so that we can restore those diagnostics to good standing
if it turns out that we were wrong to suppress, e.g. if the
tag specifier is actually an elaborated type specifier and not
a declaration.

llvm-svn: 156291

llvm-svn: 156290

separate pools owned by the RAII objects that keep pushing
decl state.  This gives us quite a bit more flexibility.

llvm-svn: 156289

llvm-svn: 156288

llvm-svn: 156287

- Two new tests (one for each property), require libclang built from r155858 or later to pass
- New test utility function (get_cursors) that gets all the nodes with a specific spelling.

Patch by Evan Pipho.

llvm-svn: 156286

Patch by Jack Carter.

llvm-svn: 156285

Patch by Jack Carter.

llvm-svn: 156284

Patch by Jack Carter.

llvm-svn: 156283

llvm-svn: 156282

llvm-svn: 156281

Patch by Jack Carter.

llvm-svn: 156280

from the previous 2 patches.

Patch by Jack Carter.

llvm-svn: 156279

Patch by Jack Carter.

llvm-svn: 156278

non-floating point general registers allow 8 and 16-bit
elements.

Patch by Jack Carter.

llvm-svn: 156277

llvm-svn: 156276