llvm-svn: 167882

Assignment of Bitcode ownership to Joe Abbey, after announcing proposal on
LLVMdev and not hearing any major objections.  Although it did spark a nice 
discussion regarding what it means to own something in LLVM.

llvm-svn: 167881

llvm-svn: 167880

This option will eventually either be enabled unconditionally or
replaced by a more general live range splitting optimization.

llvm-svn: 167879

llvm-svn: 167877

Revert r167836, "llvm/test/Other/close-stderr.ll: Mark it as XFAIL:mingw32 for now.", corresponding to r167849.

llvm-svn: 167876

TLS symbols on PowerPC using the integrated assembler.

llvm-svn: 167875

llvm-svn: 167872

llvm-svn: 167866

generate them from PPCELFObjectWriter::getRelocTypeInner
as appropriate.

llvm-svn: 167864

 - lwaux
 - lhzux
 - stbu

llvm-svn: 167863

operand field name mismatches in:
 - AForm_3  (fmul, fmuls)
 - XFXForm_5 (mtcrf)
 - XFLForm (mtfsf)

llvm-svn: 167862

by using a new instruction format BForm_1.

llvm-svn: 167861

using a new instruction format AForm_4.

llvm-svn: 167860

chain is correctly setup.

As an example, if the original load must happen before later stores, we need
to make sure the constructed VZEXT_LOAD is constrained to be before the stores.

rdar://12684358

llvm-svn: 167859

physical register as candidate for common subexpression elimination
in MachineCSE.

This fixes a bug on PowerPC in MultiSource/Applications/oggenc/oggenc
caused by MachineCSE invalidly merging two separate DYNALLOC insns.

llvm-svn: 167855

llvm-svn: 167853

llvm-svn: 167852

Working on reducing unit tests.
This won't be enabled unless a subtarget enables misched.

llvm-svn: 167851

llvm-svn: 167849

On MSYS, 70 is not seen, but 1.

r127726 should be reworked. Candidate options are;

  1) Use not exit(70), but _exit(70), in report_fatal_error().
  2) Return with _exit(70) in ~raw_ostream().

llvm-svn: 167836

llvm-svn: 167830

getelementptrs.

llvm-svn: 167829

Previously in a vector of pointers, the pointer couldn't be any pointer type,
it had to be a pointer to an integer or floating point type.  This is a hassle
for dragonegg because the GCC vectorizer happily produces vectors of pointers
where the pointer is a pointer to a struct or whatever.  Vector getelementptr
was restricted to just one index, but now that vectors of pointers can have
any pointer type it is more natural to allow arbitrary vector getelementptrs.
There is however the issue of struct GEPs, where if each lane chose different
struct fields then from that point on each lane will be working down into
unrelated types.  This seems like too much pain for too little gain, so when
you have a vector struct index all the elements are required to be the same.

llvm-svn: 167828

Part of a patch by Preston Briggs.

llvm-svn: 167827

This allows me to begin enabling (or backing out) misched by default
for one subtarget at a time. To run misched we typically want to:
- Disable SelectionDAG scheduling (use the source order scheduler)
- Enable more aggressive coalescing (until we decide to always run the coalescer this way)
- Enable MachineScheduler pass itself.

Disabling PostRA sched may follow for some subtargets.

llvm-svn: 167826

This adds the -join-globalcopies option which can be enabled by
default once misched is also enabled.

Ideally, the register coalescer would be able to split local live
ranges in a way that produces copies that can be easily resolved by
the scheduler. Until then, this heuristic should be good enough to at
least allow the scheduler to run after coalescing.

llvm-svn: 167825

Figure out <size> argument of llvm.lifetime intrinsics at the moment they are created (during function inlining)

llvm-svn: 167821

Add a blank line.

llvm-svn: 167819

llvm-svn: 167817

This patch migrates the math library call simplifications from the
simplify-libcalls pass into the instcombine library call simplifier.

I have typically migrated just one simplifier at a time, but the math
simplifiers are interdependent because:

   1. CosOpt, PowOpt, and Exp2Opt all depend on UnaryDoubleFPOpt.
   2. CosOpt, PowOpt, Exp2Opt, and UnaryDoubleFPOpt all depend on
      the option -enable-double-float-shrink.

These two factors made migrating each of these simplifiers individually
more of a pain than it would be worth.  So, I migrated them all together.

llvm-svn: 167815

llvm-svn: 167812

Don't choose a vectorization plan containing only shuffles and
vector inserts/extracts. Due to inperfections in the cost model,
these can lead to infinite recusion.

llvm-svn: 167811

llvm-svn: 167809

For now be more conservative in case other out-of-tree schedulers rely
on the old behavior of artificial edges.

llvm-svn: 167808

If we have a type 'int a[1]' and a type 'int b[0]', the generated DWARF is the
same for both of them because we use the 'upper_bound' attribute. Instead use
the 'count' attrbute, which gives the correct number of elements in the array.
<rdar://problem/12566646>

llvm-svn: 167806

Block priorities still apply outside loops.

llvm-svn: 167793

llvm-svn: 167787

llvm-svn: 167785

This fixes another infinite recursion case when using target costs.
We can only replace insert element input chains that are pure (end
with inserting into an undef).

llvm-svn: 167784