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

There are aliases for --start-group/--end-group options represented
by -( and -) respectively in the command line.

This change adds and improves the test for the alias options to be
tested.

Looks like users use this option widely than explicitly using
--start-group/--end-group.

llvm-svn: 192470

Just pass a Target* into ObjectFileELF::GetImageInfoAddress so that
it can do the extra dereference necessary on MIPS, instead of passing
a flag back to the caller.

Review: http://llvm-reviews.chandlerc.com/D1899
llvm-svn: 192469

migration, the typedef has annotations.
// rdar://15200602

llvm-svn: 192468

llvm-svn: 192467

llvm-svn: 192466

llvm-svn: 192465

llvm-svn: 192464

llvm-svn: 192463

llvm-svn: 192462

llvm-svn: 192460

llvm-svn: 192458

llvm-svn: 192455

llvm-svn: 192454

llvm-svn: 192453

llvm-svn: 192452

llvm-svn: 192451

llvm-svn: 192450

llvm-svn: 192449

Currently data-race-test unittests fail with the following false positive:


WARNING: ThreadSanitizer: data race (pid=20365)
  Write of size 8 at 0x7da000008050 by thread T54:
    #0 close tsan_interceptors.cc:1483 (racecheck_unittest-linux-amd64-O0+0x0000000eb34a)
    #1 NegativeTests_epoll::Worker2() unittest/posix_tests.cc:1148 (racecheck_unittest-linux-amd64-O0+0x0000000cc6b1)
    #2 MyThread::ThreadBody(MyThread*) unittest/./thread_wrappers_pthread.h:367 (racecheck_unittest-linux-amd64-O0+0x000000097500)

  Previous read of size 8 at 0x7da000008050 by thread T49:
    #0 epoll_ctl tsan_interceptors.cc:1646 (racecheck_unittest-linux-amd64-O0+0x0000000e9fee)
    #1 NegativeTests_epoll::Worker1() unittest/posix_tests.cc:1140 (racecheck_unittest-linux-amd64-O0+0x0000000cc5b5)
    #2 MyThread::ThreadBody(MyThread*) unittest/./thread_wrappers_pthread.h:367 (racecheck_unittest-linux-amd64-O0+0x000000097500)

llvm-svn: 192448

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: 192443

Add a test.

llvm-svn: 192442

llvm-svn: 192441

llvm-svn: 192440

llvm-svn: 192439

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

llvm-svn: 192438

llvm-svn: 192437

Incorrect handling of 'double' and 'long long int'

llvm-svn: 192436

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

[Sanitizer] Simplify StackTrace::FastUnwindStack interface and fix a bug with one-frame stack traces

llvm-svn: 192428