I don't currently have a good testcase for this; will try to get one
tomorrow.  <rdar://problem/10032939>

llvm-svn: 138794

Remove obsolete ObjCInferRelatedReturnType from LangOptions...the correct option is ObjCInferRelatedResultType.

llvm-svn: 138793

apparent general rule.  Just special-case it as appropriate.
PR10789.

llvm-svn: 138792

register dependency (rather than glue them together). This is general
goodness as it gives scheduler more freedom. However it is motivated by
a nasty bug in isel.

When a i64 sub is expanded to subc + sube.
  libcall #1
     \
      \        subc 
       \       /  \
        \     /    \
         \   /    libcall #2
          sube

If the libcalls are not serialized (i.e. both have chains which are dag
entry), legalizer can serialize them in arbitrary orders. If it's
unlucky, it can force libcall #2 before libcall #1 in the above case.

  subc
   |
  libcall #2
   |
  libcall #1
   |
  sube

However since subc and sube are "glued" together, this ends up being a
cycle when the scheduler combine subc and sube as a single scheduling
unit.

The right solution is to fix LegalizeType too chains the libcalls together.
However, LegalizeType is not processing nodes in order so that's harder than
it should be. For now, the move to physical register dependency will do.

rdar://10019576

llvm-svn: 138791

llvm-svn: 138790

Doing this happens to disrupt the pattern that ARC was looking for
for move optimizations, so we need to fix that simultaneously.

llvm-svn: 138789

llvm-svn: 138788

llvm-svn: 138787

from Anders Waldenborg!

llvm-svn: 138786

llvm-svn: 138785

Johannes Schaub for talking me around to sense.

llvm-svn: 138784

llvm-svn: 138783

llvm-svn: 138782

llvm-svn: 138781

llvm-svn: 138780

llvm-svn: 138779

llvm-svn: 138778

llvm-svn: 138777

llvm-svn: 138776

- wrong alignment for double (it was 4, but 8 is desired),
- added checks for _REENTRANT define,
- fixed the issue that defines were not tested (because the check for inside #ifdef).

llvm-svn: 138775

Thread safety: added basic handling for pt_guarded_by/var and guarded_by/var annotations. We identify situations where we are accessing (reading or writing) guarded variables, and report an error if the appropriate locks are not held.

llvm-svn: 138774

llvm-svn: 138773

group decls.

llvm-svn: 138772

llvm-svn: 138771

llvm-svn: 138770

llvm-svn: 138769

Explicitly zero out parts of a vector which are required to be zero by the algorithm in LowerUINT_TO_FP_i32.  This only has a substantial effect on the generated code when the input is extracted from a vector register; other ways of loading an i32 do the appropriate zeroing implicitly.  Fixes PR10802.

llvm-svn: 138768

llvm-svn: 138767

Apply the same fix for the change in LDR_PRE_IMM/LDRB_PRE_IMM operand encodings to the load-store optimizer that I applied to the instruction selector in r138758.  Fixes ary3 from the nightly test suite.

llvm-svn: 138766

[analyzer] MacOSKeychainAPIChecker: Simplify getSymbolForRegion by using existing API. Thanks Jordy.

llvm-svn: 138765

llvm-svn: 138764

llvm-svn: 138763

Fix: Bug 10798 - [analyzer] Crash when analyzing ICU. (A slight improvement on the previous commit.)

llvm-svn: 138762

llvm-svn: 138761

llvm-svn: 138760

llvm-svn: 138759

addrmode_imm12 and addrmode2_offset encode their immediate values differently.  Update the manual instruction selection code that was encoding them the addrmode2 way even though LDR_PRE_IMM/LDRB_PRE_IMM had switched to addrmode_imm12.  Should fix a number of nightly test failures.

llvm-svn: 138758

Patch by Jean-Daniel Dupas. Thanks for spotting and fixing!

llvm-svn: 138757

Optimize chained bitcasts of the form A->B->A.
Undo r138722 and change isEliminableCastPair to allow this case.

llvm-svn: 138756

llvm-svn: 138754