llvm-svn: 320397

Summary:
Clang was crashing when diagnosing an unused-lambda-capture for a VLA because
From.getVariable() is null for the capture of a VLA bound.
Warning about the VLA bound capture is not helpful, so only warn for the VLA
itself.

Fixes: PR35555

Reviewers: aaron.ballman, dim, rsmith

Reviewed By: aaron.ballman, dim

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D41016

llvm-svn: 320396

llvm-svn: 320395

llvm-svn: 320394

Also fix variable naming style.

llvm-svn: 320393

llvm-svn: 320392

As reported in llvm bugzilla 32377.
Here’s a patch to add preinclude of stdc-predef.h.

The gcc documentation says “On GNU/Linux, <stdc-predef.h> is pre-included.” See https://gcc.gnu.org/gcc-4.8/porting_to.html;

The preinclude is inhibited with –ffreestanding.

Basically I fixed the failing test cases by adding –ffreestanding which inhibits this behavior.

I fixed all the failing tests, including some in extra/test, there's a separate patch for that which is linked here

Note: this is a recommit after a test failure took down the original (r318669)

Patch By: mibintc
Differential Revision: https://reviews.llvm.org/D34158

llvm-svn: 320391

This fixes pr35570.

We were creating these symbols after parsing version scripts, so they
could not be versioned.

We cannot move the version script parsing later because we need it for
lto.

One option is to move both addReservedSymbols and
createSyntheticSections earlier. The disadvantage is that some
sections created by createSyntheticSections replace other input
sections. For example, gdb index replaces .debug_gnu_pubnames, so it
wants to run after gc sections so that it can set S->Live to false.

What this patch does instead is to move just the ElfHeader creation
early.

llvm-svn: 320390

llvm-svn: 320389

This is due to PR26161 needing to be resolved before we can fix
big endian bugs like PR35359. The work to split aggregates into smaller LLTs
instead of using one large scalar will take some time, so in the mean time
we'll fall back to SDAG.

Some ARM BE tests xfailed for now as a result.

Differential Revision: https://reviews.llvm.org/D40789

llvm-svn: 320388

Tag LWP instructions as WriteSystem

llvm-svn: 320387

llvm-svn: 320386

llvm-svn: 320385

llvm-svn: 320384

llvm-svn: 320383

llvm-svn: 320382

For some reason the override directives got removed in r320373.
I suspect this to be an unwanted effect of clang-format.

llvm-svn: 320381

llvm-svn: 320380

llvm-svn: 320379

- Rename Bonaire target to be gfx704.
- Eliminate gfx800 and make Iceland and Tonga both use gfx802 as they use the same code.
- List target features supported by each processor in the processor table together with the default value.
- Add xnack flag to e_flags.
- Remove xnack from kernel metadata and kernel descriptor since it is now a whole code object property.

Differential Revision: https://reviews.llvm.org/D40051

llvm-svn: 320378

This enables one to run all dwo tests with dotest.py --category dwo, or
skip them with --skip-category.

llvm-svn: 320377

llvm-svn: 320376

See bugs 35494 and 35559:
https://bugs.llvm.org/show_bug.cgi?id=35494
https://bugs.llvm.org/show_bug.cgi?id=35559

Reviewers: vpykhtin, artem.tamazov, arsenm

Differential Revision: https://reviews.llvm.org/D41007

llvm-svn: 320375

  
At first, I tried to thread the x86 needle and use a target hook (isVectorShiftByScalarCheap())
to disable the transform only for non-splat pow-of-2 constants, but not AVX2, but only some
element types, but...it's difficult.

Here we just avoid the loop with the x86 vector transform that conflicts with the general DAG
combine and preserve all of the existing behavior AFAICT otherwise.

Some tests that will probably fail if someone does try to restrict this in a more targeted way
for x86-only may be found in:

test/CodeGen/X86/combine-mul.ll
test/CodeGen/X86/vector-mul.ll
test/CodeGen/X86/widen_arith-5.ll

This should prevent the infinite looping seen with:
https://bugs.llvm.org/show_bug.cgi?id=35579

Differential Revision: https://reviews.llvm.org/D41040

llvm-svn: 320374

This patch introduces getShadowOriginPtr(), a method that obtains both the shadow and origin pointers for an address as a Value pair.
The existing callers of getShadowPtr() and getOriginPtr() are updated to use getShadowOriginPtr().

The rationale for this change is to simplify KMSAN instrumentation implementation.
In KMSAN origins tracking is always enabled, and there's no direct mapping between the app memory and the shadow/origin pages.
Both the shadow and the origin pointer for a given address are obtained by calling a single runtime hook from the instrumentation,
therefore it's easier to work with those pointers together.

Reviewed at https://reviews.llvm.org/D40835.

llvm-svn: 320373

Comment improvements split out from review D36749. No changes to any non
comment line.

llvm-svn: 320372

llvm-svn: 320371

llvm-svn: 320370

A wrong type was passed to insertVector, causing an out-of-bounds value
to be added an an operand to HexagonISD::INSERT. This later failed in
instruction selection.

llvm-svn: 320369

Second part of https://reviews.llvm.org/D40348.
Revision r318436 has extended all constants feeding a store to 64 bits
to allow for CSE on the SDAG. However, negative constants were zero extended
which made the constant being loaded appear to be a positive value larger than
16 bits. This resulted in long sequences to materialize such constants
rather than simply a "load immediate". This patch just sign-extends those
updated constants so that they remain 16-bit signed immediates if they started
out that way.

llvm-svn: 320368

Host::GetEnvironment returns a StringList, but the interface for
launching a process takes Args. The fact that we use two classes for
representing an environment is not ideal, but for now we should at least
have an easy way to convert between the two.

llvm-svn: 320366

This commit is the first part of https://reviews.llvm.org/D40348.
In order to allow target combines to be performed on newly combined
indexed loads, add them back to the worklist. The remainder of the
above patch will be committed in subsequent revisions and will use
this. Test cases will be included with those follow-up commits.

llvm-svn: 320365

Currently libc++ defines operator== and operator!= as friend functions in the
definition of the istream_iterator class template. Such definition has a subtle
difference from an out-of-line definition required by the C++ Standard: these
functions can only be found by argument-dependent lookup, but not by qualified
lookup.

This patch changes the definition, so that it conforms to the C++ Standard and
adds a check involving qualified lookup to the test suite.

Patch contributed by Mikhail Maltsev.

Differential Revision: https://reviews.llvm.org/D40415

llvm-svn: 320363

Add test for matching an OR with 0xFFFF0000 to a MOVTi16.

llvm-svn: 320362

llvm-svn: 320361

Introduce -polly-stmt-granularity=store option.

Contributed-by: Nandini Singhal <cs15mtech01004@iith.ac.in>

Differential Revision: https://reviews.llvm.org/D37337

llvm-svn: 320360

The TableGen-based calling convention definitions are inflexible, while
writing a function to implement the calling convention is very
straight-forward, and allows difficult cases to be handled more easily. With
this patch adds support for:
* Passing large scalars according to the RV32I calling convention
* Byval arguments
* Passing values on the stack when the argument registers are exhausted

The custom CC_RISCV calling convention is also used for returns.

This patch also documents the ABI lowering that a language frontend is 
expected to perform. I would like to work to simplify these requirements over 
time, but this will require further discussion within the LLVM community.

We add PendingArgFlags CCState, as a companion to PendingLocs.

The PendingLocs vector is used by a number of backends to handle arguments 
that are split during legalisation. However CCValAssign doesn't keep track of 
the original argument alignment. Therefore, add a PendingArgFlags vector which 
can be used to keep track of the ISD::ArgFlagsTy for every value added to 
PendingLocs.

Differential Revision: https://reviews.llvm.org/D39898

llvm-svn: 320359

llvm-svn: 320358

As frame pointer elimination isn't implemented until a later patch and we make 
extensive use of update_llc_test_checks.py, this changes touches a lot of the 
RISC-V tests.

Differential Revision: https://reviews.llvm.org/D39849

llvm-svn: 320357

llvm-svn: 320356