SectionBase::getOutputSection handles replacement sections, so this
code doesn't have to.

llvm-svn: 328390

<rdar://problem/36035075>, <rdar://problem/36035039>

llvm-svn: 328389

This partially reverts commit r328261. The GCC bug has been fixed in
trunk and has never existed in a released version. Therefore the changes
to variant are unneeded.

However, the additional tests have been left in place.

llvm-svn: 328388

llvm-svn: 328387

Both GCC and MSVC only look at the low byte of a boolean when it is
passed.

llvm-svn: 328386

Summary:
Porting HWASan to Linux x86-64, first of the three patches, compiler-rt part.

The approach is similar to ARM case, trap signal is used to communicate
memory tag check failure. int3 instruction is used to generate a signal,
access parameters are stored in nop [eax + offset] instruction immediately
following the int3 one

Had to add HWASan init on malloc because, due to much less interceptors
defined (most other sanitizers intercept much more and get initalized
via one of those interceptors or don't care about malloc), HWASan was not
initialized yet when libstdc++ was trying to allocate memory for its own
fixed-size heap, which led to CHECK-fail in AllocateFromLocalPool.

Also added the CHECK() failure handler with more detailed message and
stack reporting.

Reviewers: eugenis

Subscribers: kubamracek, dberris, mgorny, kristof.beyls, delcypher, #sanitizers, llvm-commits

Differential Revision: https://reviews.llvm.org/D44705

llvm-svn: 328385

Summary:
Disables certain CMP optimizations to improve fuzzing signal under -O1
and -O2.

Switches all fuzzer tests to -O2 except for a few leak tests where the
leak is optimized out under -O2.

Reviewers: kcc, vitalybuka

Reviewed By: vitalybuka

Subscribers: cfe-commits, llvm-commits

Differential Revision: https://reviews.llvm.org/D44798

llvm-svn: 328384

installing in the man page directory.

llvm-svn: 328383

llvm-svn: 328382

A bug in BFD linker is not our FIXME item.

llvm-svn: 328381

llvm-svn: 328380

llvm-svn: 328379

This one will be used to print statistics about lldb sessions
(including, e.g. number of expression evaluation succeeded or
failed). I decided to commit the skeleton first so that we have
a clean reference on how a command should be implemented.
My future commits are going to populate this command and test
it.

<rdar://problem/36555975>

llvm-svn: 328378

Summary:
This was motivated by absence of PrunEH functionality in new PM.
It was decided that a proper way to do PruneEH is to add NoUnwind inference
into PostOrderFunctionAttrs and then perform normal SimplifyCFG on top.

This change generalizes attribute handling implemented for (a removal of)
Convergent attribute, by introducing a generic builder-like class
   AttributeInferer

It registers all the attribute inference requests, storing per-attribute
predicates into a vector, and then goes through an SCC Node, scanning all
the instructions for not breaking attribute assumptions.

The main idea is that as soon all the instructions from all the functions
of SCC Node conform to attribute assumptions then we are free to infer
the attribute as set for all the functions of SCC Node.

It handles two distinct cases of attributes:
   - those that might break due to derefinement of the function code

     for these attributes we are allowed to apply inference only if all the
     functions are "exact definitions". Example - NoUnwind.

   - those that do not care about derefinement

     for these attributes we are allowed to apply inference as soon as we see
     any function definition. Example - removal of Convergent attribute.

Also in this commit:
* Converted all the FunctionAttrs tests to use FileCheck and added new-PM
  invocations to them

* FunctionAttrs/convergent.ll test demonstrates a difference in behavior between
   new and old PM implementations. Marked with FIXME.

* PruneEH tests were converted to new-PM as well, using function-attrs+simplify-cfg
  combo as intended

* some of "other" tests were updated since function-attrs now infers 'nounwind'
  even for old PM pipeline

* -disable-nounwind-inference hidden option added as a possible workaround for a supposedly
  rare case when nounwind being inferred by default presents a problem

Reviewers: chandlerc, jlebar

Reviewed By: jlebar

Subscribers: eraman, llvm-commits

Differential Revision: https://reviews.llvm.org/D44415

llvm-svn: 328377

Summary:
Intercepts lstat, acct, access, faccessat and strlcpy/strlcat

Patch by David CARLIER

Reviewers: visa, vitalybuka

Subscribers: krytarowski, fedor.sergeev, srhines, kubamracek, llvm-commits, #sanitizers

Differential Revision: https://reviews.llvm.org/D44432

llvm-svn: 328376

Breaks Darwin.

This reverts commit r328369.

llvm-svn: 328375

archs.

llvm-svn: 328374

llvm-svn: 328373

llvm-svn: 328372

There were no tests with vector types before this.

llvm-svn: 328371

It wasn't even registered.

(lldb) apropos args
No commands found pertaining to 'args'. Try 'help' to see
a complete list of debugger commands.

llvm-svn: 328370

Summary:
- Intercepting mprotect calls.
- Fixing forgotten flag check.

Patch by David CARLIER

Reviewers: vitalybuka, vsk

Reviewed By: vitalybuka

Subscribers: srhines, kubamracek, llvm-commits, #sanitizers

Differential Revision: https://reviews.llvm.org/D44777

llvm-svn: 328369

I'm going to add a new commend so I figured I could do
some spring cleaning.

llvm-svn: 328368

llvm-svn: 328367

llvm-svn: 328366

llvm-svn: 328365

This avoids unnecessary splitting due to uninteresting immediates.

llvm-svn: 328364

This was reverted several times due to what ultimately turned out
to be incompatibilities in our serialized hash table format.

Several changes went in prior to this to fix those issues since
they were more fundamental and independent of supporting injected
sources, so now that those are fixed this change should hopefully
pass.

llvm-svn: 328363

Launching a kernel from the host code does not generate code for the
kernel itself. This fixes an issue with clang erroneously reporting
an error for a HD->D call from within the kernel.

Differential Revision: https://reviews.llvm.org/D44837

llvm-svn: 328362

Summary: Porting HWASan to Linux x86-64, the third of the three patches, clang part.

Reviewers: eugenis

Subscribers: cryptoad, cfe-commits

Differential Revision: https://reviews.llvm.org/D44745

llvm-svn: 328361

The branch relaxation pass collects sizes of all instructions at the
beginning, before any changes have been made. It then performs one pass
over all branches to see which ones need to be extended. It does not
account for the case when a previously valid branch becomes out-of-range
due to relaxing other branches.
This approach fixes this problem by assuming from the beginning that
all extendable branches have been extended. This may cause unneeded
relaxation in some cases, but avoids iteration and recomputing instruction
sizes.

llvm-svn: 328360

Need to override convertConstraint to recognise amdgpu specific register names.

Differential Revision: https://reviews.llvm.org/D44533

llvm-svn: 328359

llvm-svn: 328358

The HexagonExpandCondsets pass is incorrectly removing the dead
flag on a definition that is really dead, and adding a kill flag
to a use that is tied to a definition. This causes an assert later
during the machine scheduler when querying the live interval
information.

Patch by Brendon Cahoon.

llvm-svn: 328357

llvm-svn: 328356

Optimize Ry = add(Rx,#n); memw(Ry+#0) = Rz  =>  memw(Rx,#n) = Rz.

Patch by Jyotsna Verma.

llvm-svn: 328355

Caught by LLVM r328345!

llvm-svn: 328354

llvm-svn: 328353

llvm-svn: 328352

Add two additional implicit arguments for OpenCL for the AMDGPU target using the AMDHSA runtime to support device enqueue.

Differential Revision: https://reviews.llvm.org/D44697

llvm-svn: 328351