This is not quite NFC because I changed the SDLoc to use the more
standard 'N' (the starting node for the fold).

This transform is a special-case of a more general fold that we
do in IR, but it seems like the general fold is needed here too
to avoid a potential regression seen in D58017.

https://rise4fun.com/Alive/3jZm

This got flagged by the debian buildbot.

This got flagged by the modules build.

This renames LLDB_CONFIG_TERMIOS_SUPPORTED to LLDB_ENABLE_TERMIOS. It
now also uses cmakedefine01 to keep things consistent with out other
optional dependencies. But more importantly it won't silently fail when
you forget to include Config.h.

This keeps things consistent with out other optional dependencies. But
more importantly it won't silently fail when you forget to include
Config.h.

Apply suggestion in https://reviews.llvm.org/D71157#1780834

Reviewed By: grimar, ruiu

Differential Revision: https://reviews.llvm.org/D71388

This matches the naming scheme used by LLVM.

Differential revision: https://reviews.llvm.org/D71380

In order to use assumptions, computeKnownBits needs a context
instruction. We can use the GEP, if it is an instruction. We already
pass the assumption cache, but it cannot be used without a context
instruction.

Reviewers: anemet, asbirlea, hfinkel, spatel

Reviewed By: asbirlea

Differential Revision: https://reviews.llvm.org/D71264

This matches the naming scheme used by LLVM.

Differential revision: https://reviews.llvm.org/D71377

Summary:
Add basic support for emscripten.

This enables libFuzzer to build (using build.sh) for emscripten and fuzz
a target compiled with
-fsanitize-coverage=inline-8bit-counters.

Basic fuzzing and bug finding work with this commit.
RSS limit and timeouts will not work because they depend on system
functions that are not implemented/widely supported in emscripten.

Reviewers: kcc, vitalybuka, hctim

Reviewed By: hctim

Subscribers: #sanitizers, llvm-commits

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D71285

Summary:
Support functions with placeholder return types even in cases when the type is
declared in the body of the function.
Example: auto f() { struct X{}; return X(); }

Reviewers: balazske, a_sidorin, a.sidorin, shafik

Subscribers: rnkovacs, dkrupp, Szelethus, gamesh411, teemperor, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D70819

Summary:
This is a follow up on https://reviews.llvm.org/D61634#1742154 to turn the clang driver -fno-builtin flag into an IR attribute.
I also investigated pushing the attribute earlier on (in Sema) but it looks like this patch is simple and will cover all function calls.

Reviewers: aaron.ballman, courbet

Subscribers: cfe-commits, tejohnson

Tags: #clang

Differential Revision: https://reviews.llvm.org/D71193

This is the first patch adding an initial set of matrix intrinsics and a
corresponding lowering pass. This has been discussed on llvm-dev:
http://lists.llvm.org/pipermail/llvm-dev/2019-October/136240.html

The first patch introduces four new intrinsics (transpose, multiply,
columnwise load and store) and a LowerMatrixIntrinsics pass, that
lowers those intrinsics to vector operations.

Matrixes are embedded in a 'flat' vector (e.g. a 4 x 4 float matrix
embedded in a <16 x float> vector) and the intrinsics take the dimension
information as parameters. Those parameters need to be ConstantInt.
For the memory layout, we initially assume column-major, but in the RFC
we also described how to extend the intrinsics to support row-major as
well.

For the initial lowering, we split the input of the intrinsics into a
set of column vectors, transform those column vectors and concatenate
the result columns to a flat result vector.

This allows us to lower the intrinsics without any shape propagation, as
mentioned in the RFC. In follow-up patches, we plan to submit the
following improvements:
 * Shape propagation to eliminate the embedding/splitting for each
   intrinsic.
 * Fused & tiled lowering of multiply and other operations.
 * Optimization remarks highlighting matrix expressions and costs.
 * Generate loops for operations on large matrixes.
 * More general block processing for operation on large vectors,
   exploiting shape information.

We would like to add dedicated transpose, columnwise load and store
intrinsics, even though they are not strictly necessary. For example, we
could instead emit a large shufflevector instruction instead of the
transpose. But we expect that to
  (1) become unwieldy for larger matrixes (even for 16x16 matrixes,
      the resulting shufflevector masks would be huge),
  (2) risk instcombine making small changes, causing us to fail to
      detect the transpose, preventing better lowerings

For the load/store, we are additionally planning on exploiting the
intrinsics for better alias analysis.

Reviewers: anemet, Gerolf, reames, hfinkel, andrew.w.kaylor, efriedma, rengolin

Reviewed By: anemet

Differential Revision: https://reviews.llvm.org/D70456

This adds ReachingDefAnalysis (RDA) to the VPTBlock pass, so that we can
reimplement findVCMPToFoldIntoVPS with just a few calls to RDA.

Differential Revision: https://reviews.llvm.org/D71330

Summary:
This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet

Subscribers: hiraditya, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D71420

This is patch C2 as mentioned in RFC
http://lists.llvm.org/pipermail/cfe-dev/2019-March/061834.html

This adds CMSE builtin functions, and introduces arm_cmse.h header which has
useful macros, functions, and data types for end-users of CMSE.

Patch by Javed Absar.

Diferential Revision: https://reviews.llvm.org/D70817

Reviewers: arsenm, nhaehnle

Reviewed By: arsenm

Subscribers: merge_guards_bot, kzhuravl, jvesely, wdng, yaxunl, dstuttard, tpr, t-tye, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D71044

Summary:
Make sure that auxiliary target specific macros are defined in OpenMP
mode.

Reviewers: ABataev, jdoerfert

Subscribers: guansong, ebevhan, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D71413

Recommit e0b96664. sub instructions were being generated for the
negated value, and for some reason they were the register only ones.
I think the problem was because I was grabbing the 'zero' from
vmovimm, which is a target constant. Now I'm just generating a new
Constant zero and so rsb instructions are now generated.

Original commit message:

The shift amount operand can be provided in a general purpose
register so sink it. Flip the vdup and negate so the existing
patterns can be used for matching.

Differential Revision: https://reviews.llvm.org/D70841

Dwo files don't have a DW_AT_loclists_base -- set one explicitly. Also,
make sure we use the correct location list flavour for v5.

This helps delineate it in the output from later tables or other output.

Reviewed by: JDevlieghere

Differential Revision: https://reviews.llvm.org/D71344

Summary:
This adds an implementation for the "textDocument/documentLink" LSP request.

It returns links for all `#include` directives to the resolved target files.

Fixes https://github.com/clangd/clangd/issues/217.

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D70872

Reviewers: aaron.ballman

Reviewed By: aaron.ballman

Subscribers: xbolva00

Differential Revision: https://reviews.llvm.org/D71083

Add thumb and thumb2 to a couple of the test files.

Summary: Remove `Worklist` iteration and make use `checkForAllUses`. There is no test chage.

Reviewers: sstefan1, jdoerfert

Reviewed By: jdoerfert

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D71352

Summary: Refactoring `AANoFreeArgument::updateImpl`. There is no test change.

Reviewers: sstefan1, jdoerfert

Reviewed By: sstefan1

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D71349

We add a new common html file that documents the available command line
tools. Also a new html is added for a brief description of CodeChecker,
this way complementing scan-build.

Differential Revision: https://reviews.llvm.org/D70439

During SelectionDAG, if a value which is associated with a DBG_VALUE
needs to be split across multiple registers, the DBG_VALUE will be split
into a set of fragment expressions to recreate the original value.

If one or more of these fragments cannot be created, they would
previously be silently dropped, causing the old debug value to live past
its expiry date. This patch fixes this issue by keeping invalid
fragments while setting their value as Undef.

Differential revision: https://reviews.llvm.org/D70248

http://lab.llvm.org:8011/builders/clang-ppc64be-linux/builds/41755

* Use ad-hoc Decl canonicalization from Clang-Rename to allow renaming
  constructors and destructors while using cross-file rename.
* Manually handle the destructor selection
* Add unit tests to prevent regressions and ensure the correct behaviour

Reviewed by: sammccall

Differential Revision: https://reviews.llvm.org/D71247

This makes TimeTraceProfilerInstance thread local. Added
timeTraceProfilerFinishThread() which moves the thread local instance to
a global vector of instances. timeTraceProfilerWrite() then writes
recorded data from all instances.

Threads are identified based on their thread ids. Totals are reported
with artificial thread ids higher than the real ones.

Replaced raw pointer for TimeTraceProfilerInstance with unique_ptr.

Differential Revision: https://reviews.llvm.org/D71059

Summary: Useful when positions are used to target nodes, with before/after ambiguity.

Reviewers: ilya-biryukov, kbobyrev

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D71356