This is relative to PR30720.

Previously we ignored all --plugin-opt arguments.
Patch adds support for them.

Patch does not add any new LTO options,
and just implements mapping from --plugin-opt to existent ones.

Differential revision: https://reviews.llvm.org/D36227

llvm-svn: 310826

This addresses a FIXME in MachineInstr::mayAlias.

llvm-svn: 310825

On some targets, the penalty of executing runtime unrolling checks
and then not the unrolled loop can be significantly detrimental to
performance. This results in the need to be more conservative with
the unroll count, keeping a trip count of 2 reduces the overhead as
well as increasing the chance of the unrolled body being executed. But
being conservative leaves performance gains on the table.

This patch enables the unrolling of the remainder loop introduced by
runtime unrolling. This can help reduce the overhead of misunrolled
loops because the cost of non-taken branches is much less than the
cost of the backedge that would normally be executed in the remainder
loop. This allows larger unroll factors to be used without suffering
performance loses with smaller iteration counts.

Differential Revision: https://reviews.llvm.org/D36309

llvm-svn: 310824

An unused function warning was raised in
https://bugs.llvm.org/show_bug.cgi?id=34178.

The offending function, in AArch64MCCodeEmitter.cpp, was committed by
me last week.

Differential Revision: https://reviews.llvm.org/D36665

llvm-svn: 310823

This reverts commit r310782.

llvm-svn: 310822

Reviewers: bkramer, krasimir, klimek

Reviewed By: klimek

Subscribers: arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D36261

llvm-svn: 310821

Update comments. No functional change intended.

Addresses Devin's post-commit review comments in https://reviews.llvm.org/D35673
and https://reviews.llvm.org/D35674.

llvm-svn: 310820

Reviewers: krasimir, bkramer, klimek

Reviewed By: klimek

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D36398

llvm-svn: 310819

Summary:
Calling addDocument after removeDocument could have resulted in an
invalid program state (AST and Preamble for the valid document could
have been incorrectly removed).
This commit also includes an improved CppFile::cancelRebuild
implementation that allows to cancel reparse without waiting for
ongoing rebuild to finish.

Reviewers: krasimir, bkramer, klimek

Reviewed By: bkramer

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D36397

llvm-svn: 310818

rL310433 introduced a code path where DAL is not returned and must be freed.
This change allows to run openmp-offload.c when Clang is built with ASan.

llvm-svn: 310817

causing compile time issues.

Moreover, the patch *deleted* the flag in addition to changing the
default, and links to a code review that doesn't even discuss the flag
and just has an update to a Clang test case.

I've followed up on the commit thread to ask for numbers on compile time
at this point, leaving the flag in place until things stabilize, and
pointing at specific code that seems to exhibit excessive compile time
with this patch.

Original commit message for r310583:
"""
[ValueTracking] Enabling ValueTracking patch by default (recommit). Part 2.

The original patch was an improvement to IR ValueTracking on
non-negative integers. It has been checked in to trunk (D18777,
r284022). But was disabled by default due to performance regressions.
Perf impact has improved. The patch would be enabled by default.
""""

llvm-svn: 310816

Reviewers: grosser, Meinersbur, bollu

Differential Revision: https://reviews.llvm.org/D36660

llvm-svn: 310815

Reviewers: grosser, Meinersbur, bollu

Differential Revision: https://reviews.llvm.org/D36659

llvm-svn: 310814

llvm-svn: 310813

llvm-svn: 310812

llvm-svn: 310811

Summary:
In Python 2, calling `dict.items()` returns an indexable `list`, whereas
on Python 3 it returns a set-like `dict_items` object, which cannot be
indexed. Explicitly onvert the `dict_items` object so that it can be
indexed when using Python 3.

In combination with D36622, D36623, and D36624, this change allows
`opt-viewer.py` to exit successfully when run with Python 3.4.

Test Plan:
Run `opt-viewer.py` using Python 3.4 and confirm it does not encounter a
runtime error when when indexing into `dict.items()`.

Reviewers: anemet

Reviewed By: anemet

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D36630

llvm-svn: 310810

introduce a miscompile bug.

There appears to be a bug where the generated code to extract the sign
bit doesn't work correctly for 32-bit inputs. I've replied to the
original commit pointing out the problem. I think I see by inspection
(and reading the manual for PPC) how to fix this, but I can't be 100%
confident and I also don't know what the best way to test this is.
Currently it seems nearly impossible to get the backend to hit this code
path, but the patch autohr is likely in a better position to craft such
test cases than I am, and based on where the bug is it should be easily
done.

Original commit message for r310346:
"""
[PowerPC] Eliminate compares - add i32 sext/zext handling for SETLE/SETGE

Adds handling for SETLE/SETGE comparisons on i32 values. Furthermore, it
adds the handling for the special case where RHS == 0.

Differential Revision: https://reviews.llvm.org/D34048
"""

llvm-svn: 310809

The comment about why we couldn't use avx512_maskable appears to have been incorrect.

llvm-svn: 310808

Modernise the code with range-loops etc

Reviewed by: @fhahn, @rovka
Differential Revision: https://reviews.llvm.org/D36502

llvm-svn: 310807

Summary:
These functions were overly complicated. The body of this function was rechecking for an And operation to find the constant, but we already knew we were looking at two Ands ORed together and the pieces are in variables. We already had earlier nearby code that checked for ConstantInts. So just inline the remaining parts into the earlier code.

Next step is to use m_APInt instead of ConstantInt.

Reviewers: spatel, efriedma, davide, majnemer

Reviewed By: spatel

Subscribers: zzheng, llvm-commits

Differential Revision: https://reviews.llvm.org/D36439

llvm-svn: 310806

llvm-svn: 310805

llvm-svn: 310804

llvm-svn: 310803

llvm-svn: 310802

llvm-svn: 310801

Summary:
make check-profile:

Failing Tests (2):
    Profile-i386 :: instrprof-dlopen.test
    Profile-x86_64 :: instrprof-dlopen.test

  Expected Passes    : 64
  Unsupported Tests  : 42
  Unexpected Failures: 2

Sponsored by <The NetBSD Foundation>

Reviewers: joerg, vitalybuka, kcc, filcab, fjricci

Reviewed By: vitalybuka

Subscribers: vsk, llvm-commits, srhines, mgorny, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D36603

llvm-svn: 310800

llvm-svn: 310799

Differential Revision: https://reviews.llvm.org/D36364

llvm-svn: 310798

This allows using semicolons for bundling up more than one
statement per line. This is used within the mingw-w64 project in some
assembly files that contain code for multiple architectures.

Differential Revision: https://reviews.llvm.org/D36366

llvm-svn: 310797

It was mistakenly added to that list in D23560 (committed in rL285712). RISCV 
is an experimental backend and should never have been in that list, I 
mistakenly interpreted LLVM_ALL_TARGETS as a list of all targets rather than 
targets to build by default. Unfortunately, because of this the RISCV backend 
has been building by default when it shouldn't be.

This commet adds a description comment, which should help to avoid such 
mistakes in the future.

See my message to llvm-dev for more information and analysis 
<http://lists.llvm.org/pipermail/llvm-dev/2017-August/116347.html>.

Differential Revision: https://reviews.llvm.org/D36538

llvm-svn: 310796

llvm-svn: 310795

[AVX512] Correct isExtractSubvectorCheap so that it will return the correct answers for extracting 128-bits from a 512-bit vector and for mask registers.

Previously it would not return true for extracting either of the upper quarters of a 512-bit registers.

For mask registers we support extracting anything from index 0. And otherwise we only support extracting the upper half of a register.

Differential Revision: https://reviews.llvm.org/D36638

llvm-svn: 310794

Summary:
Without the SrcVT its hard to know what is really being asked for. For example if your target has 128, 256, and 512 bit vectors. Maybe extracting 128 from 256 is cheap, but maybe extracting 128 from 512 is not.

For x86 we do support extracting a quarter of a 512-bit register. But for i1 vectors we don't have isel patterns for extracting arbitrary pieces. So we need this to have a correct implementation of isExtractSubvectorCheap for mask vectors.

Reviewers: RKSimon, zvi, efriedma

Reviewed By: RKSimon

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

Differential Revision: https://reviews.llvm.org/D36649

llvm-svn: 310793

This is a continuation patch for commit r307529 which completely replaces the scheduling information for the SandyBridge architecture target by modifying the file X86SchedSandyBridge.td located under the X86 Target (see also https://reviews.llvm.org/D35019).

In this patch we added the scheduling information of additional SNB instructions that were missing from the patch commit r307529, fixed the scheduling of several resource groups that include only port0 instead of port05 (i.e., port0 OR port5) and fixed several incorrect instructions' scheduling in the r307529 commit.

The patch also includes the X87 instructions which were missing in previous patch commit r307529 as reported in bugzilla bug 34080.

Reviewers: zvi, RKSimon, chandlerc, igorb, m_zuckerman, craig.topper, aymanmus, dim

Differential Revision: https://reviews.llvm.org/D36388

llvm-svn: 310792

An existing test should have covered this but a typo caused it to fail. I've kept both as the codegen for the typo case needs addressing as well. 

llvm-svn: 310791

And fails to select TBM instructions at all.

llvm-svn: 310790

K0 isn't expected as a write-mask, so provide a detailed error here, instead of the more generic one (invalid op for insn)
Conforms with gas

Differential Revision: https://reviews.llvm.org/D36570

llvm-svn: 310789

llvm-svn: 310788

Add an X86 combine for TESTM when one of the operands is a BUILD_VECTOR(0,0,...).

TESTM op0, BUILD_VECTOR(0,0,...) -> BUILD_VECTOR(0,0,...)
TESTM BUILD_VECTOR(0,0,...), op1 -> BUILD_VECTOR(0,0,...)

Differential Revision:
https://reviews.llvm.org/D36536

llvm-svn: 310787