Summary:
This is an alternative solution to running the lit test suite on bots
without polluting the source directory. Each input test suite gets an
auto-generated site config in the build directory that points back to
the test input source directory.

This adds some cmake comlexity, but now we don't need to remove and
re-copy the test input directory before every test.

Reviewers: delcypher, modocache

Subscribers: mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D36026

llvm-svn: 309602

Summary:
`CheckForPvallocOverflow` was introduced with D35818 to detect when pvalloc
would wrap when rounding up to the next multiple of the page size.

Add this check to MSan's pvalloc implementation.

Reviewers: alekseyshl

Reviewed By: alekseyshl

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D36093

llvm-svn: 309601

llvm-svn: 309600

This patch refactors the code used in llc such that all the users of the
addPassesToEmitFile API have access to a homogeneous way of handling
start/stop-after/before options right out of the box.

In particular, just invoking addPassesToEmitFile will set the proper
pipeline without additional effort (modulo parsing a .mir file if the
start-before/after options are used.

NFC.

Differential Revision: https://reviews.llvm.org/D30913

llvm-svn: 309599

This fixes a dependency inconsistency, where addMinGWDefines in Targets.cpp
(used from other architectures than X86) called the addCygMingDefines function
in X86.h.

This was inconsistently split in SVN r308791 (D35701).

Differential Revision: https://reviews.llvm.org/D36072

llvm-svn: 309598

As noted in the code comment, transforming this in the other direction might require 
a separate transform here in CGP given the block-at-a-time DAG constraint.

Besides that theoretical motivation, there are 2 practical motivations for the 
subtract-of-cmps form:

1. The codegen for both x86 and PPC is better for this IR (though PPC could be better still). 
   There is discussion about canonicalizing IR to the select form 
   ( http://lists.llvm.org/pipermail/llvm-dev/2017-July/114885.html ), 
   so we probably need to add DAG transforms for those patterns anyway, but this improves the 
   memcmp output without waiting for that step.

2. If we allow vector-sized chunks for the load and compare, x86 is better prepared to convert
   that to optimal code when using subtract-of-cmps, so another prerequisite patch is avoided
   if we choose to enable that.

Differential Revision: https://reviews.llvm.org/D34904

llvm-svn: 309597

[DWARF] Added verification check for tags in accelerator tables. This patch verifies that the atom tag is actually the same with the tag of the DIE that we retrieve from the table.

Differential Revision: https://reviews.llvm.org/D35963

llvm-svn: 309596

We are not allowed to reason about an initializer value without first
consulting hasDefinitiveInitializer.

llvm-svn: 309594

[AVX-512] Remove patterns that select vmovdqu8/16 for unmasked loads. Prefer vmovdqa64/vmovdqu64 instead.

These were taking priority over the aligned load instructions since there is no vmovda8/16. I don't think there is really a difference between aligned and unaligned on newer cpus so I don't think it matters which instructions we use.

But with this change we reduce the size of the isel table a little and we allow the aligned information to pass through to the evex->vec pass and produce the same output has avx/avx2 in some cases.

I also generally dislike patterns rooted in a bitcast which these were.

Differential Revision: https://reviews.llvm.org/D35977

llvm-svn: 309589

Summary: This is useful for managing lifetime of VFS-based caches.

Reviewers: bkramer, krasimir

Reviewed By: bkramer

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D36095

llvm-svn: 309585

llvm-svn: 309584

llvm-svn: 309583

In addition to array and PHI writes, also allow scalar value writes.
The only kind of write not allowed are writes by functions
(including memcpy/memmove/memset).

llvm-svn: 309582

Current LLDB (that is without DWZ support) crashes accessing Fedora debug info:
READ of size 8 at 0x60200000ffc8 thread T0
    #0 in DWARFDebugInfoEntry::BuildAddressRangeTable(SymbolFileDWARF*, DWARFCompileUnit const*, DWARFDebugAranges*) const tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp:1336

Greg Clayton: We will need a warning to be emitted in
SymbolFileDWARF::CalculateAbilities() stating we won't parse the DWARF due to
"unsupported DW_FORM value of 0x1f20".

Patch has been mostly written by Greg Clayton.

Differential revision: https://reviews.llvm.org/D35622

llvm-svn: 309581

Updated AArch64 to widen destination to s32.
https://reviews.llvm.org/D35737

Reviewed by Tim

llvm-svn: 309579

Summary: As per title. This creates useless recombines.

Reviewers: jyknight, nemanjai, mkuper, spatel, RKSimon, zvi, bkramer

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D33848

llvm-svn: 309578

llvm-svn: 309576

llvm-svn: 309575

GCC7 did not warn about that, but Clang does.

llvm-svn: 309573

This fixes a buildbot failure with -Werror introduced by r309553

llvm-svn: 309572

This fixes the test, so that it can be run on different hosts that may have
different OpenCL extensions enabled.

llvm-svn: 309571

DIEs are lazily deserialized so it's possible that the DWO CU is created
before the DIE is parsed. DWO shares .debug_addr and .debug_ranges with the
object file so overwriting the offset with 0 will make the CU unusable.

No test case because I couldn't get clang to emit a non-zero range base.

llvm-svn: 309570

Summary:
Fixes http://llvm.org/PR33947.

https://godbolt.org/g/54XRMT

void f(int a) {
  struct A {
    void g(int a) {}
    A() { int a; }
  };
}

3 : <source>:3:16: warning: declaration shadows a local variable [-Wshadow]
    void g(int a) {}
               ^
1 : <source>:1:12: note: previous declaration is here
void f(int a) {
           ^
4 : <source>:4:15: warning: declaration shadows a local variable [-Wshadow]
    A() { int a; }
              ^
1 : <source>:1:12: note: previous declaration is here
void f(int a) {
           ^
2 warnings generated.

The local variable `a` of the function `f` can't be accessed from a method of
the function-local class A, thus no shadowing occurs and no diagnostic is
needed.

Reviewers: rnk, rsmith, arphaman, Quuxplusone

Reviewed By: rnk, Quuxplusone

Subscribers: Quuxplusone, cfe-commits

Differential Revision: https://reviews.llvm.org/D35941

llvm-svn: 309569

Summary:
When outputing usage, emit here-document directly instead of
saving in a variable first -- avoids problem with bash 3.2.57 where an
unmatched ' in the here-document results in the following error:

./build_docker_image.sh: line 135: unexpected EOF while looking for matching `''

bash --version
GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin16)

Differential Revision: https://reviews.llvm.org/D36064

llvm-svn: 309568

Check the subgroup extension is enabled, before doing other Sema checks.

llvm-svn: 309567

Summary: All getReductionCost() functions are renamed to getArithmeticReductionCost() + added basic infrastructure to handle non-binary reduction operations.

Reviewers: spatel, mzolotukhin, Ayal, mkuper, gilr, hfinkel

Subscribers: RKSimon, llvm-commits

Differential Revision: https://reviews.llvm.org/D29402

llvm-svn: 309566

Submitted on the behalf of Jatin Bhateja

Differential Revision: https://reviews.llvm.org/D36048

llvm-svn: 309565

The additions in r309562 triggered a docs buildbot failure.

llvm-svn: 309564

llvm-svn: 309563

llvm-svn: 309562

PR33883 shows that calls to intrinsic functions should not have their vector
arguments or returns subject to ABI changes required by the target.

This resolves PR33883.

Thanks to Alex Crichton for reporting the issue!

Reviewers: zoran.jovanovic, atanasyan

Differential Revision: https://reviews.llvm.org/D35765

llvm-svn: 309561

Summary:
This allows us to map functions such as exp, expf, expl, for which no
LLVM intrinsics exist. Instead, we link to NVIDIA's libdevice which provides
high-performance implementations of a wide range of (math) functions. We
currently link only a small subset, the exp, cos and copysign functions. Other
functions will be enabled as needed.

Reviewers: bollu, singam-sanjay

Reviewed By: bollu

Subscribers: tstellar, tra, nemanjai, pollydev, mgorny, llvm-commits, kbarton

Tags: #polly

Differential Revision: https://reviews.llvm.org/D35703

llvm-svn: 309560

about unterminated push directives that are followed by a reset
('#pragma pack()')

This has been suggested by Hans Wennborg.

llvm-svn: 309559

The Loop Vectorizer generates redundant operations when manipulating masks:
AND with true, OR with false, compare equal to true. Instead of relying on
a subsequent pass to clean them up, this patch avoids generating them.

Use null (no-mask) to represent all-one full masks, instead of a constant
all-one vector, following the convention of masked gathers and scatters.

Preparing for a follow-up VPlan patch in which these mask manipulating
operations are modeled using recipes.

Differential Revision: https://reviews.llvm.org/D35725

llvm-svn: 309558

CLANG_TOOL_EXTRA_BUILD doesn't affect headers.

_CINDEX_LIB_ is defined when the target is SHARED.
On Win32, it affects clang-c/Platform.h and it shouldn't be ignored.

This is part of https://reviews.llvm.org/D35559

llvm-svn: 309557

This reverts commit r309490 as it triggers on our AOSP buildbut error messages
of the form:

inlinable function call in a function with debug info must have a !dbg location

llvm-svn: 309556

Previously, the created object files for the import library were broken.
Write the symbol table before the string table. Simplify the code by
using a separate variable Prefix instead of duplicating a few lines.

Also update the coff-weak-exports to actually check that the generated
weak symbols can be found as intended.

Differential Revision: https://reviews.llvm.org/D36065

llvm-svn: 309555

Summary:
Clang recently started to emit base address entries into the
.debug_ranges section to reduce the number of relocations needed. Lets
make sure LLDB can read them.

llvm-svn: 309554

Summary:
Since  r293359, most dump() function are only defined when
`!defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)` holds. print() functions
only used by dump() functions are now unused in release builds,
generating lots of warnings. This patch only defines some print()
functions if they are used.

Reviewers: MatzeB

Reviewed By: MatzeB

Subscribers: arsenm, mzolotukhin, nhaehnle, llvm-commits

Differential Revision: https://reviews.llvm.org/D35949

llvm-svn: 309553

This is part of https://reviews.llvm.org/D35559

llvm-svn: 309552