Preliminary support for systems which require changing JIT memory regions privilege from read / write to read / executable.

llvm-svn: 56303

llvm-svn: 56301

llvm-svn: 56300

llvm-svn: 56299

llvm-svn: 56298

"Method accepting NSError** argument should have non-void return value to indicate that an error occurred."

Test case written, but the header needs to be delta-debugged reduced.  Will commit shortly.

llvm-svn: 56297

llvm-svn: 56295

llvm-svn: 56294

 - Enables use of ABIArgInfo::Expand when needed. This greatly
   improves our x86 ABI compatibility.

 - As the infrastructure for target specific ABI handling isn't built
   yet, this change means ABI compatibility on other platforms is once
   again broken in a different way than before.

 - Upcoming: Figure out how to refactor ABI handling into
   targets. More documentation.

llvm-svn: 56293

over having it in a register. And wait until after checking type
legality before requesting that the callee address be placed in a
register. Also, fix support for calls with void return type.

This speeds up fast-isel isel time by about 15% and reduces
instruction counts by about 3% overall on certain testcases. It also
changes many indirect calls to direct calls.

llvm-svn: 56292

llvm-svn: 56291

with an earlyclobber operand elsewhere.  Propagate
this bit and the earlyclobber bit through SDISel.
Change linear-scan RA not to allocate regs in a way 
that conflicts with an earlyclobber.  See also comments.

llvm-svn: 56290

Ensure that ABIArgInfo::Default implementation for aggregrate types
is sensible (StructRet on return and ByVal on arguments).

No functionality change.

llvm-svn: 56289

Block literals are now represented by the concrete BlockExpr class.
This is cleanup (removes a FIXME).
No functionality change.

llvm-svn: 56288

llvm-svn: 56287

llvm-svn: 56286

llvm-svn: 56285

This one slipped through cracks very well.

llvm-svn: 56284

llvm-svn: 56282

llvm-svn: 56281

llvm-svn: 56280

llvm-svn: 56277

llvm-svn: 56276

llvm-svn: 56275

llvm-svn: 56274

llvm-svn: 56271

up some new ascii art to illustrate what it does. This change
currently has no effect on generated code.

llvm-svn: 56270

 - No functionality change.

llvm-svn: 56269

be used with fast-isel.

llvm-svn: 56268

function with appropriate parameters. This allows us to support blocks on PPC.

llvm-svn: 56267

llvm-svn: 56266

llvm-svn: 56265

llvm-svn: 56262

llvm-svn: 56261

  if we know that 'len != 0' and know that 'i == 0' then we know that
  'i < len' must evaluate to true and cannot evaluate to false

llvm-svn: 56260

llvm-svn: 56259

When converting a CopyFromReg to a copy instruction, use the register class of its uses to determine the right destination register class of the copy. This is important for targets where a physical register may belong to multiple register classes.

llvm-svn: 56258

 ^(expression) or ^(int arg1, float arg2)(expression)
...is no longer supported. 
All block literals now require a compound statement.

llvm-svn: 56257

llvm-svn: 56256

llvm-svn: 56255