This fixes a problem from a previous check-in where a return value was omitted.

Previously the remote/stubs-remote.ll and remote/stubs-sm-pic.ll tests were reporting passes, but they should have been failing.  Those tests attempt to link against an external symbol and remote symbol resolution is not supported.  The old RemoteMemoryManager implementation resulted in local symbols being used for resolution and the child process crashed but the test didn't notice.  With this check-in remote symbol resolution fails, and so the test (correctly) fails.

llvm-svn: 192514

llvm-svn: 192504

llvm-svn: 192501

llvm-svn: 192500

llvm-svn: 192499

llvm-svn: 192492

llvm-svn: 192487

This doesn't change the meaning of the output, but makes look right. PR17539.

llvm-svn: 192483

When if converting something like:
true:
   ... = R0<kill>

false:
   ... = R0<kill>

then the instructions of the true block must not have a <kill> flag
anymore, as the instruction of the false block follow and do still read
the R0 value.
Specifically this patch determines the set of register live-in in the
false block (possibly after simulating the liveness changes of the
duplicated instructions). Each of these live-in registers mustn't be
killed.

llvm-svn: 192482

Contains a set of live register (units) and code to move forward and
backward in the schedule while updating the live set.

llvm-svn: 192481

[DAGCombiner] Load slicing test case: attempt to really fix the buildbots (used sse4.2 instead of avx!).

<rdar://problem/14477220>

llvm-svn: 192480

llvm-svn: 192479

llvm-svn: 192478

Really fix CHECK-LABEL and CHECK-DAG interaction. This actually just restores the initial implementation that was in r186162 but got lost in some subsequent refactoring. More explicit variable names and comments are present now to hopefully prevent repeat regression, as well as another test.

llvm-svn: 192477

This should fix the buildbots.

Original commit message:
[DAGCombiner] Slice a big load in two loads when the element are next to each
other in memory and the target has paired load and performs post-isel loads
combining.

E.g., this optimization will transform something like this:
a = load i64* addr
b = trunc i64 a to i32
c = lshr i64 a, 32
d = trunc i64 c to i32

into:
b = load i32* addr1
d = load i32* addr2
Where addr1 = addr2 +/- sizeof(i32), if the target supports paired load and
performs post-isel loads combining.

One should overload TargetLowering::hasPairedLoad to provide this information.
The default is false.

<rdar://problem/14477220>

llvm-svn: 192476

llvm-svn: 192474

This reverts r192454

Apparently FileCheck isn't as smart as I though and does not enforce a
topological order between variable defs+uses.

llvm-svn: 192472

other in memory and the target has paired load and performs post-isel loads
combining.

E.g., this optimization will transform something like this:
 a = load i64* addr
 b = trunc i64 a to i32
 c = lshr i64 a, 32
 d = trunc i64 c to i32

into:
 b = load i32* addr1
 d = load i32* addr2
Where addr1 = addr2 +/- sizeof(i32), if the target supports paired load and
performs post-isel loads combining.

One should overload TargetLowering::hasPairedLoad to provide this information.
The default is false.

<rdar://problem/14477220>

llvm-svn: 192471

llvm-svn: 192463

llvm-svn: 192460

llvm-svn: 192458

llvm-svn: 192455

llvm-svn: 192454

llvm-svn: 192451

llvm-svn: 192450

llvm-svn: 192449

INSERT is the first type of MSA instruction that requires a change to the way MSA registers are parsed. 
This happens because MSA registers may be suffixed by an index in the form of an immediate or a
 general purpose register. The changes to parseMSARegs reflect that requirement.

llvm-svn: 192447

llvm-svn: 192446

[NVPTX] Switch from StrongPHIElimination to PHIElimination in NVPTXTargetMachine, and add some missing optimization passes to addOptimizedRegAlloc

Fixes PR17529

llvm-svn: 192445

Make AsmPrinter::emitImplicitDef a virtual method so targets can emit custom comments for implicit defs

For NVPTX, this fixes a crash where the emitImplicitDef implementation was expecting physical registers,
while NVPTX uses virtual registers (with a couple of exceptions).  Now, the implicit def comment will be
emitted as a true PTX register name. Other targets can use this to customize the output of implicit def
comments.

Fixes PR17519

llvm-svn: 192444

llvm-svn: 192440

[mips][msa] Added support for matching maddv.[bhwd], and msubv.[bhwd] from normal IR (i.e. not intrinsics)

llvm-svn: 192438

llvm-svn: 192435

llvm-svn: 192434

llvm-svn: 192433

When a ConstantExpr which uses a thread local is part of a PHI node
instruction, the insruction that replaces the ConstantExpr must
be inserted in the predecessor block, in front of the terminator instruction.
If the predecessor block has multiple successors, the edge is first split.

llvm-svn: 192432

llvm-svn: 192431

llvm-svn: 192430

[mips][msa] Added support for matching ffint_[us].[wd], and ftrunc_[us].[wd] from normal IR (i.e. not intrinsics)

llvm-svn: 192429

llvm-svn: 192425