With this patch llvm-readobj now prints if a relocation is pcrel, its length,
if it is extern and if it is scattered.

It also refactors the code a bit to use bit fields instead of shifts and
masks all over the place.

llvm-svn: 179294

Explicitly list all sanitizer headers in CMake build rules. Make sure sanitizer lit_tests depend on fresh headers.

llvm-svn: 179293

[asan] improve the UAR reporting (try harder to find the correct frame), try to make the test more stable

llvm-svn: 179292

When trying to collapse sequences of insertelement/extractelement
instructions into single shuffle instructions, there is one specific
case where the Instruction Combiner wrongly updates the resulting
Mask of shuffle indexes.

The problem is in function CollectShuffleElments.

If we have a sequence of insert/extract element instructions
like the one below:

  %tmp1 = extractelement <4 x float> %LHS, i32 0
  %tmp2 = insertelement <4 x float> %RHS, float %tmp1, i32 1
  %tmp3 = extractelement <4 x float> %RHS, i32 2
  %tmp4 = insertelement <4 x float> %tmp2, float %tmp3, i32 3

Where:
  . %RHS will have a mask of [4,5,6,7]
  . %LHS will have a mask of [0,1,2,3]

The Mask of shuffle indexes is wrongly computed to [4,1,6,7]
instead of [4,0,6,7].
When analyzing %tmp2 in order to compute the Mask for the
resulting shuffle instruction, the algorithm forgets to update
the mask index at position 1 with the index associated to the
element extracted from %LHS by instruction %tmp1.

Patch by Andrea DiBiagio!

llvm-svn: 179291

Thanks to Reid Kleckner for catching this.

llvm-svn: 179289

Pre- and post- hooks for linux syscalls. Not wired into anything, but exposed
through public interface.

llvm-svn: 179288

Function declarations are now broken with the following preferences:
1) break amongst arguments.
2) break after return type.
3) break after (.
4) break before after nested name specifiers.

Options #2 or #3 are preferred over #1 only if a substantial number of
lines can be saved by that.

llvm-svn: 179287

llvm-svn: 179286

This will be used in clang to decide if it should create an @file or not. It
will be tested on the clang side.

Patch by Nathan Froyd.

llvm-svn: 179285

The bots seem to do more line wrapping because they have longer absolute
paths.

llvm-svn: 179284

The behavior can be overridden by setting LIT_USE_INTERNAL_SHELL=0 in
the environment.

This fixes issues with /dev/null for me and brings the test suite time
down to 30s.  =D

llvm-svn: 179283

This required some tedious reordering to match clang's order.
Presumably these ObjC tests were generated based on llvm-gcc's output
ordering.

llvm-svn: 179282

llvm-svn: 179281

llvm-svn: 179280

llvm-svn: 179279

[asan] fix use-after-return functionality (PR15672) and enable the corresponding test. We still don't guarantee anything with regard to use-after-return checking

llvm-svn: 179278

llvm-svn: 179277

llvm-svn: 179276

llvm-svn: 179275

llvm-svn: 179274

llvm-svn: 179273

Rename the C function to create a SLPVectorizerPass to something sane and expose it in the header file.

llvm-svn: 179272

llvm-svn: 179271

Before: SomeType &operator=(const SomeType & S);
After:  SomeType &operator=(const SomeType &S);
llvm-svn: 179270

llvm-svn: 179269

llvm-svn: 179268

As packed comparisons in AVX/SSE produce all 0s or all 1s in each SIMD lane,
vector select could be simplified to AND/OR or removed if one or both values
being selected is all 0s or all 1s.

llvm-svn: 179267

As these two instructions in AVX extension are privileged instructions for
special purpose, it's only expected to be used in inlined assembly.

llvm-svn: 179266

This patch is revised based on patch from Victor Umansky
<victor.umansky@intel.com>. More cases are handled in X86's bool
simplification, i.e.
- SETCC_CARRY
- value is truncated to i1 with AND

As a by-product, PR5443 is also fixed.

llvm-svn: 179265

llvm-svn: 179264

llvm-svn: 179263

llvm-svn: 179262

llvm-svn: 179261

llvm-svn: 179260

llvm-svn: 179259

to '-A'.

Add option '-a' / '--address' to disassemble which will find the
function that contains that address, and disassemble the entire function.

<rdar://problem/13436207> 

llvm-svn: 179258

to the list of undefined atoms. 

The processing of undefined atoms from dynamic libraries is controlled by
use-shlib-undefines command line option. 

This patch also adds additional command line arguments to allow/disallow
unresolved symbols from shared libraries and mimics GNU ld behavior.

llvm-svn: 179257

The object was already checked in, but was not being tested.

llvm-svn: 179256

It was returning the loaded address of the section containing the relocation,
which really doesn't seem to be the intent of this function.

llvm-svn: 179255

It's a kind of implicit conversion, which we generally drop, but
more importantly it's got very specific placement requirements.

rdar://13617051

llvm-svn: 179254