llvm-svn: 316358

A wasm file crafted with a bogus section size can trigger an ASan issue
in the DWARFObjInMemory constructor. Nip the problem in the bud when we
read the wasm section.

Found by OSS-Fuzz:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3219

Differential Revision: https://reviews.llvm.org/D38777

llvm-svn: 316357

Summary: .

Reviewers: cryptoad

Subscribers: llvm-commits, kubamracek

Differential Revision: https://reviews.llvm.org/D39131

llvm-svn: 316356

llvm-svn: 316355

llvm-svn: 316354

Differential Revision: https://reviews.llvm.org/D39184

llvm-svn: 316353

Reviewers: pcc, asl, tonic

Reviewed By: pcc

Subscribers: llvm-commits, kcc

Differential Revision: https://reviews.llvm.org/D38516

llvm-svn: 316352

llvm-svn: 316351

Also added links to the talks available.

llvm-svn: 316350

llvm-svn: 316349

Breaks build:
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/builds/4677/steps/build%20with%20ninja/logs/stdio

In file included from compiler-rt/lib/xray/xray_fdr_logging.cc:34:
In file included from compiler-rt/lib/xray/xray_fdr_logging_impl.h:36:
In file included from compiler-rt/lib/xray/xray_flags.h:18:
compiler-rt/lib/xray/../sanitizer_common/sanitizer_flag_parser.h:23:7: error: '__sanitizer::FlagHandlerBase' has virtual functions but non-virtual destructor [-Werror,-Wnon-virtual-dtor]
class FlagHandlerBase {

llvm-svn: 316348

Summary:
Purging allocator quarantine and returning memory to OS might be desired
between fuzzer iterations since, most likely, the quarantine is not
going to catch bugs in the code under fuzz, but reducing RSS might
significantly prolong the fuzzing session.

Reviewers: cryptoad

Subscribers: kubamracek, llvm-commits

Differential Revision: https://reviews.llvm.org/D39153

llvm-svn: 316347

The range should be assumed to be the hardware maximum
if a workitem intrinsic is used in a callable function
which does not know the restricted limit of the calling
kernel.

llvm-svn: 316346

[X86] Fix disassembler table generation to prevent instructions tagged with 'PS' being inherited into PD/XS/XD attribute entries.

llvm-svn: 316345

llvm-svn: 316344

llvm-svn: 316343

Summary:
Up to now, the Scudo cmake target only provided a static library that had to be
linked to an executable to benefit from the hardened allocator.
This introduces a shared library as well, that can be LD_PRELOAD'ed.

Reviewers: alekseyshl

Reviewed By: alekseyshl

Subscribers: srhines, mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D38980

llvm-svn: 316342

Rename endIdx, startIdx, and length to getEndIdx, getStartIdx, and getLength
in Candidate.

llvm-svn: 316341

llvm-svn: 316340

Should be no functional change for now. A future disassembler change will prevent disassembling with 0xf2/0xf3.

llvm-svn: 316339

Preparing to do a refactor of CPU/feature checking, this
patch pulls the one CPU implementation from the .h file
to the .cpp file.

llvm-svn: 316338

I don't think this changes anything functionally yet, but I plan to fix the disassembler to use this to disable matching certain instructions with 0xf3/0xf2/0x66 prefixes.

llvm-svn: 316337

Remove AssertZext and instead add PEXTRW/PEXTRB support to computeKnownBitsForTargetNode to simplify instruction selection.

Differential Revision: https://reviews.llvm.org/D39169

llvm-svn: 316336

This is for consistency with lld-link, see https://reviews.llvm.org/D38972
Also give --version a help text so it shows up in --help / /? output (for
both clang-cl and regular clang).

llvm-svn: 316335

Differential Revision: https://reviews.llvm.org/D39046

llvm-svn: 316334

llvm-svn: 316333

llvm-svn: 316332

combineShuffleOfScalars is very conservative about shuffled BUILD_VECTORs that can be combined together.

This patch adds one additional case - if both BUILD_VECTORs represent splats of the same scalar value but with different UNDEF elements, then we should create a single splat BUILD_VECTOR, sharing only the UNDEF elements defined by the shuffle mask.

Differential Revision: https://reviews.llvm.org/D38696

llvm-svn: 316331

Summary:
Support formatting formatv_objects.

While here, fix documentation about member-formatters, and attempted
perfect-forwarding (I think).

Reviewers: zturner

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D38997

llvm-svn: 316330

Differential Revision: https://reviews.llvm.org/D38972

llvm-svn: 316329

Avoid the retl/retq changes in an upcoming patch

llvm-svn: 316328

Reviewers: bkramer, krasimir, sammccall

Reviewed By: krasimir

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D38731

llvm-svn: 316327

llvm-svn: 316326

llvm-svn: 316325

llvm-svn: 316324

llvm-svn: 316323

llvm-svn: 316322

This teaches tool about following consants: 
DW_TAG_GNU_call_site,
DW_TAG_GNU_call_site_parameter,
DW_AT_GNU_call_site_value,
DW_AT_GNU_all_call_sites.

Constants documented here: https://sourceware.org/elfutils/DwarfExtensions

Differential revision: https://reviews.llvm.org/D39119

llvm-svn: 316321

Transformation uploaded for CR in https://reviews.llvm.org/D34141.

llvm-svn: 316320

Fix for Bug 30718 - Failure to disassemble certain MOV with rex.R. The issue was in illegal segment register index.
Differential Revision: https://reviews.llvm.org/D38786

llvm-svn: 316319