llvm-svn: 309090

This is PR30422,
previously LLD did not render all option aliases in --help.
With this patch it will.

Differential revision: https://reviews.llvm.org/D35477

llvm-svn: 309089

llvm-svn: 309088

By default, we display only options that are not
hidden and have help texts. This patch adds flag
allowing to display aliases that have no help text.
In this case help text of aliased option used instead.

Differential revision: https://reviews.llvm.org/D35476

llvm-svn: 309087

This patch expands the support of lowerInterleavedStore to 32x8i stride 4.

LLVM creates suboptimal shuffle code-gen for AVX2. In overall, this patch is a specific fix for the pattern (Strid=4 VF=32) and we plan to include more patterns in the future. To reach our goal of "more patterns". We include two mask creators. The first function creates shuffle's mask equivalent to unpacklo/unpackhi instructions. The other creator creates mask equivalent to a concat of two half vectors(high/low).

The patch goal is to optimize the following sequence:
At the end of the computation, we have ymm2, ymm0, ymm12 and ymm3 holding
each 32 chars:

c0, c1, , c31
m0, m1, , m31
y0, y1, , y31
k0, k1, ., k31

And these need to be transposed/interleaved and stored like so:

c0 m0 y0 k0 c1 m1 y1 k1 c2 m2 y2 k2 c3 m3 y3 k3 ....

Reviewers:
dorit
Farhana
RKSimon
guyblank
DavidKreitzer

Differential Revision: https://reviews.llvm.org/D34601

llvm-svn: 309086

Changing mask argument type from const SmallVectorImpl<int>& to
ArrayRef<int>.

This came up in D35700 where a mask is received as an ArrayRef<int> and
we want to pass it to TargetLowering::isShuffleMaskLegal().
Also saves a few lines of code.

llvm-svn: 309085

splitting patch D34601 into two part. This part changes the location of two functions. 
The second part will be based on that patch. This was requested by @RKSimon.

Reviewers:
1. dorit	
2. Farhana	
3. RKSimon	
4. guyblank	
5. DavidKreitzer

llvm-svn: 309084

This reverts commit fd63314d6770e0da62572a3fea2c41c4cc0fc58a.

llvm-svn: 309083

This reverts commit d1997bff31cf6b484eb59c2ee1fc3155442e338c.

llvm-svn: 309082

Summary: This fixes compiling with headers from the Windows SDK for ARM64.

Reviewers: compnerd, ruiu, mstorsjo

Reviewed By: compnerd, mstorsjo

Subscribers: mgorny, aemerson, javed.absar, kristof.beyls, llvm-commits, cfe-commits

Differential Revision: https://reviews.llvm.org/D35862

llvm-svn: 309081

This patch adds a cache for computeExitLimit to save compilation time. A lot of examples of
tests that take extensive time to compile are attached to the bug 33494.

Differential Revision: https://reviews.llvm.org/D35827

llvm-svn: 309080

Summary: The aligned load predicates don't  suppress themselves if the load is non-temporal the way the unaligned predicates do. For the most part this isn't a problem because the aligned predicates are mostly used for instructions that only load the the non-temporal loads have priority over those. The exception are masked loads.

Reviewers: RKSimon, zvi

Reviewed By: RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D35712

llvm-svn: 309079

Summary: This patch adds flags and tests to cover the PGOOpt handling logic in new PM.

Reviewers: chandlerc, davide

Reviewed By: chandlerc

Subscribers: sanjoy, llvm-commits

Differential Revision: https://reviews.llvm.org/D35807

llvm-svn: 309076

Follow up to r309056.

llvm-svn: 309075

This change adds sanitizer support for LLVM's libunwind and libc++abi
as an alternative to libstdc++. This allows using the in tree version
of libunwind and libc++abi which is useful when building a toolchain
for different target.

Differential Revision: https://reviews.llvm.org/D34501

llvm-svn: 309074

llvm-svn: 309073

`SCEVUnknown::allUsesReplacedWith` does not need to call `forgetMemoizedResults`
since RAUW does a value-equivalent replacement by assumption.  If this
assumption was false then the later setValPtr(New) call would be incorrect too.

This is a non-trivial performance optimization for functions with a large number
of loops since `forgetMemoizedResults` walks all loop backedge taken counts to
see if any of them use the SCEVUnknown being RAUWed.  However, this improvement
is difficult to demonstrate without checking in an excessively large IR file.

llvm-svn: 309072

llvm-svn: 309071

Summary:
Previously were in support.  Since many many things depend on support,
were all forced to also depend on libxml2, which we only want in a few cases.
This puts all the libxml2 deps in a separate lib to be used only in a few
places.

Reviewers: ruiu, thakis, rnk

Subscribers: mgorny, hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D35819

llvm-svn: 309070

llvm-svn: 309069

[DWARF] Generalized verification of .apple_names accelerator table to be applicable to any acceleration table. Added verification for .apple_types, .apple_namespaces and .apple_objc sections.

Differential Revision: https://reviews.llvm.org/D35853

llvm-svn: 309068

Summary:

Do not issue fixit in UnnecessaryValueParamCheck if the function is an explicit template specialization as this could cause build breakages.

Reviewers: alexfh

Subscribers: JDevlieghere, xazax.hun, cfe-commits

Differential Revision: https://reviews.llvm.org/D35718

llvm-svn: 309067

The PDB "symbol stream" actually contains symbol records for the publics
and the globals stream. The globals and publics streams are essentially
hash tables that point into a single stream of records. In order to
match cvdump's behavior, we need to only dump symbol records referenced
from the hash table. This patch implements that, and then implements
global stream dumping, since it's just a subset of public stream
dumping.

Now we shouldn't see S_PROCREF or S_GDATA32 records when dumping
publics, and instead we should see those record in the globals stream.

llvm-svn: 309066

This time with correct #if.

This reverts commit 9cf4eca0e0383040c1ff1416815c7f649650c2a0.

llvm-svn: 309064

[AArch64] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC).

llvm-svn: 309062

llvm-svn: 309061

This change adds support for compiler-rt builtins as an alternative
compiler runtime to libgcc.

Differential Revision: https://reviews.llvm.org/D35165

llvm-svn: 309060

This is a workaround for the bug described in PR31652 and
http://lists.llvm.org/pipermail/llvm-dev/2017-July/115497.html. The temporary
solution is to add a function EqualityPropUnSafe. In EqualityPropUnSafe, for
some simple patterns we can know the equality comparison may contains undef,
so we regard such comparison as unsafe and will not do loop-unswitching for
them. We also need to disable the select simplification when one of select
operand is undef and its result feeds into equality comparison.

The patch cannot clear the safety issue caused by the bug, but it can suppress
the issue from happening to some extent.

Differential Revision: https://reviews.llvm.org/D35811

llvm-svn: 309059

std::byte, when defined as an enum, needs to be given special treatment
with regards to its aliasing properties. An array of std::byte is
allowed to be used as storage for other types.

This fixes PR33916.

Differential Revision: https://reviews.llvm.org/D35824

llvm-svn: 309058

This reapplies commit r309034 with a bugfix+test for inlined variables.

llvm-svn: 309057

This is needed, among others, to respect --section-ordering-file
with LTO. I'll follow up with a similar change for data sections.

I hope every version of gold available on the bots has support for
--section-ordering file.

llvm-svn: 309056

Since the flag is ignored anyway, it doesn't matter whether
it is an alias or not.

llvm-svn: 309055

llvm-svn: 309054

llvm-svn: 309053

clang/StaticAnalyzer/Core/PathSensitive/LoopUnrolling.h: Add a forward decl AnalysisManager, to unbreak modules build.

llvm-svn: 309052

llvm-svn: 309051

This reverts commit 813308e240792ca70ed2f998f21df24a5061ada0.

llvm-svn: 309050

Summary: You can now use REQUIRES:abi-breaking-checks in clang too

Reviewers: chapuni, probinson, ddunbar, jroelofs

Reviewed By: jroelofs

Subscribers: jroelofs, cfe-commits

Differential Revision: https://reviews.llvm.org/D35426

llvm-svn: 309049

These can be referenced with __start_/__stop_ symbols. I will try to make
this more precise in a followup patch.

llvm-svn: 309048

Summary:
Does a simple merge, where mergeable elements are combined, all others
are appended.  Does not apply trickly namespace rules.

Subscribers: llvm-commits, hiraditya

Differential Revision: https://reviews.llvm.org/D35753

llvm-svn: 309047