The popcntw instruction is available whenever the popcntd instruction is
available, and performs a separate popcnt on the lower and upper 32-bits.
Ignoring the high-order count, this can be used for the 32-bit input case
(saving on the explicit zero extension otherwise required to use popcntd).

llvm-svn: 178470

Patch by:
Veselov, Yuri <Yuri.Veselov@intel.com>

llvm-svn: 178469

PPCISD::STFIWX is really a memory opcode, and so it should come after
FIRST_TARGET_MEMORY_OPCODE, and we should use DAG.getMemIntrinsicNode to create
nodes using it.

No functionality change intended (although there could be optimization benefits
from preserving the MMO information).

llvm-svn: 178468

llvm-svn: 178467

llvm-svn: 178466

getpwnam, getpwuid, getpwnam_r, getpwuid_r, clock_getres, clock_gettime,
clock_settime, getitimer, setitimer, sigaction (MSan).

llvm-svn: 178465

Currently the callback runs on the caller's stack. If this stack
contains values that have gone out of scope, and we are not super careful, those
values can propagate into global variables (the libc sigaction() in particular
has a side effect that can lead to this). This has caused false negatives in
leak checking code.

Changes: map a separate stack space for the tracer thread. Also, move some
globals into local scope (they had no business being global anyway).

Patch by Sergey Matveev (earthdok@google.com)

llvm-svn: 178464

Same interface as in STL. Needed for LSan.

Patch by Sergey Matveev (earthdok@google.com)

llvm-svn: 178463

llvm-svn: 178462

An interface for obtaining register contexts from suspended threads. Tailored
for LSan use.

Patch by Sergey Matveev (earthdok@google.com)

llvm-svn: 178461

Reapply r177968:
After commit 178074 we can now have undefined scheduler variants.

Move the CortexA9 resources into the CortexA9 SchedModel namespace. Define
resource mappings under the CortexA9 SchedModel. Define resources and mappings
for the SwiftModel.

Incooperate Andrew's feedback.

llvm-svn: 178460

llvm-svn: 178459

llvm-svn: 178458

The reason why this simple change is needed is that I am trying to set up a
quick cmake/ninja based buildbot and apple-clang does not support using the
sanitizers currently.

The default behavior follows exactly what was there before implying that no ones
builds should be affected at all.

llvm-svn: 178455

llvm-svn: 178454

llvm-svn: 178453

llvm-svn: 178452

been turned off globally.

llvm-svn: 178451

ImmToIdxMap should be a DenseMap (not a std::map) because there
is no ordering requirement. Also, we don't need a separate list
of instructions for noImmForm in eliminateFrameIndex, because this
list is essentially the complement of the keys in ImmToIdxMap.

No functionality change intended.

llvm-svn: 178450

A vector sext + sitofp is a lot cheaper than 8 scalar conversions.

llvm-svn: 178448

This instruction is available on modern PPC64 CPUs, and is now used
to improve the SINT_TO_FP lowering (by eliminating the need for the
separate sign extension instruction and decreasing the amount of
needed stack space).

llvm-svn: 178446

The existing SINT_TO_FP code for i32 -> float/double conversion was disabled
because it relied on broken EXTSW_32/STD_32 instruction definitions. The
original intent had been to enable these 64-bit instructions to be used on CPUs
that support them even in 32-bit mode.  Unfortunately, this form of lying to
the infrastructure was buggy (as explained in the FIXME comment) and had
therefore been disabled.

This re-enables this functionality, using regular DAG nodes, but only when
compiling in 64-bit mode. The old STD_32/EXTSW_32 definitions (which were dead)
are removed.

llvm-svn: 178438

llvm-svn: 178435

Fixes the crash reported in PR15608.

llvm-svn: 178429

Summary: This is the beginning of user documentation for the NVPTX back-end.  I want to ensure I am integrating this properly into the rest of the LLVM documentation.

Differential Revision: http://llvm-reviews.chandlerc.com/D600

llvm-svn: 178428

'@SECREL' is what is used by the Microsoft assembler, but GNU as expects '@SECREL32'.
With the patch, the MC-generated code works fine in combination with a recent GNU as (2.23.51.20120920 here).

Patch by David Nadlinger!
Differential Revision: http://llvm-reviews.chandlerc.com/D429

llvm-svn: 178427

llvm-svn: 178426

Nobody says "the developer's list" or "commits archive"; they always say
"llvmdev" or "llvm-commits". It makes sense for our documentation to
at least make that association explicitly.

llvm-svn: 178425

Order them roughly by "which one should a newbie join first".

llvm-svn: 178424

llvm-svn: 178423

llvm-svn: 178422

llvm-svn: 178421

llvm-svn: 178420

llvm-svn: 178419

functions for the NVPTX target.

llvm-svn: 178418

llvm-svn: 178417

specific code paths.

This allows us to write code like:

  if (__nvvm_reflect("FOO"))
    // Do something
  else
    // Do something else

and compile into a library, then give "FOO" a value at kernel
compile-time so the check becomes a no-op.

llvm-svn: 178416

Hopefully this resolves any outstanding style issues and gives us
an automated way of ensuring we conform to the style guidelines.

llvm-svn: 178415

gcc provides -mfprnd and -mno-fprnd for controlling the fprnd target
feature; support these options as well.

llvm-svn: 178414

No functionality change.

llvm-svn: 178413