See http://reviews.llvm.org/D3944 for more details.

Change by Zachary Turner.

llvm-svn: 210035

llvm-svn: 210034

llvm-svn: 210033

When lowering a ISD::BRCOND into a test+branch, make sure that we
always use the correct condition code to emit the test operation.

This fixes PR19858: "i8 checked mul is wrong on x86".

Patch by Keno Fisher!

llvm-svn: 210032

llvm-svn: 210031

[ASan Win] Manually call __asan_init early in the DLL initialization process to avoid a null function call in cout/cerr constructors

llvm-svn: 210030

We already had a function for checking this, we were just using it only in
specialized cases.

llvm-svn: 210029

llvm-svn: 210028

llvm-svn: 210027

function parameter. One of our existing test cases was XFAILed because
of this. This fixes the issue and un-XFAILs the test.

llvm-svn: 210026

Patch by Jack Howarth!

llvm-svn: 210025

The alternative (writing coverage at process exit) is nearly useless there.

llvm-svn: 210024

MSan is no longer an "early prototype".

llvm-svn: 210023

Looks like it was only used by dejagnu and is now dead.

llvm-svn: 210022

[AArch64] Add some more regression tests for store pre-index update folding in the load/store optimizer.

Add tests for the following transform:

 add x8, x8, #16
  ...
 str X, [x8]
  ->
 str X, [x8, #16]!

with X being either w0, x0, s0, d0 or q0.

llvm-svn: 210021

llvm-svn: 210020

Other tests in this directory use this type, so it's probably copypasta from
there.

(test_buf only forwards to the superclass in all tests where it's used though,
so I wonder if it can be replaced with just using filebuf / wfilebuf
everywhere?)

llvm-svn: 210019

[AArch64] Add some more regression tests for load pre-index update folding in the load/store optimizer.

Add tests for the following transform:

 add x8, x8, #16
  ...
 ldr X, [x8]
  ->
 ldr X, [x8, #16]!

with X being either w0, x0, s0, d0 or q0.

llvm-svn: 210018

There is a pattern where evaluation order is used as control flow.
This patch special-cases a commonly occuring version of this pattern.

Before:
  Aaaaa *aaa = nullptr;
  // ...
  aaa &&aaa->f();

After:
  Aaaaa *aaa = nullptr;
  // ...
  aaa && aaa->f();

llvm-svn: 210017

llvm-svn: 210016

llvm-svn: 210015

llvm-svn: 210014

Before:
  auto j = decltype(i) {};

After:
  auto j = decltype(i){};

This fixes llvm.org/PR19892.

llvm-svn: 210013

llvm-svn: 210012

Before:
  enum Side
  { LEFT,
    RIGHT };

After:
  enum Side
  {
    LEFT,
    RIGHT
  };

This fixes llvm.org/PR19911.

llvm-svn: 210011

Before:
  void someLongFunction(int someLongParameter)
      const
  {
  }

After:
  void someLongFunction(
      int someLongParameter) const
  {
  }

This fixes llvm.org/PR19912.

llvm-svn: 210010

llvm-svn: 210009

Reference::target() never returns a nullptr, so NULL check
is not needed and is more harmful than doing nothing.
No functionality change.

llvm-svn: 210008

This patch can handles following cases from http://nondot.org/sabre/LLVMNotes/InstCombine.txt
  "((1 << X) & 7) == 0" ==> "X > 2"
  "((1 << X) & 7) != 0" ==> "X < 3".

Differential Revision: http://reviews.llvm.org/D3678

llvm-svn: 210007

if ((x & C) == 0) x |= C becomes x |= C
if ((x & C) != 0) x ^= C becomes x &= ~C
if ((x & C) == 0) x ^= C becomes x |= C
if ((x & C) != 0) x &= ~C becomes x &= ~C
if ((x & C) == 0) x &= ~C becomes nothing

Differential Revision: http://reviews.llvm.org/D3777

llvm-svn: 210006

llvm-svn: 210005

No functional changes.

llvm-svn: 210004

Amend r210001 to use the classic fallback order behaviour if the requested
graphing program isn't found.

llvm-svn: 210003

Preparation for <string_view>. More helper functions that can be shared between <string> and <string_view>. No functionality change

llvm-svn: 210002

Replace the crufty build-time configure checks for program paths with
equivalent runtime logic.

This lets users install graphing tools as needed without having to reconfigure
and rebuild LLVM, while eliminating a long chain of inappropriate compile
dependencies that included GUI programs and the windowing system.

Additional features:

 * Support the OS X 'open' command to view graphs generated by any of the
   Graphviz utilities. This is an alternative to the Graphviz OS X UI which is
   no longer available on Mountain Lion.

 * Produce informative log output upon failure to indicate which programs can
   be installed to view graphs.

Ping me if this doesn't work for your particular environment.

llvm-svn: 210001

Instruction::isIdenticalToWhenDefined(): Check getNumOperands() in advance of std::equal(op) to appease MSVC Debug build.

MSVC Debug build is confused with (possibly invalid) op_begin(), if op_begin() == op_end().

llvm-svn: 210000

Since we cannot yet use variadic templates, add a specialisation for
6-parameters to format.  This is motivated by a need for the additional
parameter for formatting information for an unwind decoder for Windows on ARM.

llvm-svn: 209999

Introduce the support structures necessary to deal with the Windows ARM EH data.
These definitions are extremely aggressive about assertions to aid future use
for generation of the entries and subsequent decoding.

The names for the various fields are meant to reflect the names used by the
Visual Studio toolchain to aid communication.

Due to the complexity in reading a few of the values, there are a couple of
additional utility functions to decode the information.

In general, there are two ways to encode the unwinding information:
- packed, which places the data inline into the
  _IMAGE_ARM_RUNTIME_FUNCTION_ENTRY structure.
- unpacked, which places the data into auxiliary structures placed into the
  .xdata section.

The set of structures allow reading of data in either encoding, with the minor
caveat that epilogue scopes need to be decoded manually by constructing the
structure from the data returned by the RuntimeFunction structure.

These definitions are meant for read-only access at the current point as the
first use of them will be to decode the exception information.

llvm-svn: 209998

Wrong patch got committed (this one isn't ready for prime time).

This reverts commit r209996.

llvm-svn: 209997

We should treat tentative definitions as undefined for the purpose of
ODR-use linkage checking.

This broke somewhere around r149731 when tests were disabled.

Note that test coverage for these diagnostics is generally lacking due to a
separate issue (PR19910: Don't suppress unused/undefined warnings when there
are errors).

llvm-svn: 209996