Commit Graph

270085 Commits

Author SHA1 Message Date
Craig Topper 853a8d9ffc [AVX512] Don't create SHRUNKBLEND SDNodes for 512-bit vectors
There are no 512-bit blend instructions so we shouldn't create SHRUNKBLEND for them.

On a side note, it looks like there may be a missed opportunity for constant folding TESTM when LHS and RHS are equal.

This fixes PR34139.

Differential Revision: https://reviews.llvm.org/D36992

llvm-svn: 311572
2017-08-23 16:41:02 +00:00
Johannes Altmanninger a3c4923a53 [clang-diff] Reformat test, NFC
llvm-svn: 311571
2017-08-23 16:32:35 +00:00
Johannes Altmanninger 8796049fc5 [clang-diff] HTML diff navigation
Summary:
This adds shortcuts j and k to jump between changes.
It is especially useful in diffs with few changes.

Reviewers: arphaman

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D36685

llvm-svn: 311570
2017-08-23 16:32:13 +00:00
Johannes Altmanninger 1a2676924a [analyzer] Make StmtDataCollector customizable
Summary:
This moves the data collection macro calls for Stmt nodes
to lib/AST/StmtDataCollectors.inc

Users can subclass ConstStmtVisitor and include StmtDataCollectors.inc
to define visitor methods for each Stmt subclass. This makes it also
possible to customize the visit methods as exemplified in
lib/Analysis/CloneDetection.cpp.

Move helper methods for data collection to a new module,
AST/DataCollection.

Add data collection for DeclRefExpr, MemberExpr and some literals.

Reviewers: arphaman, teemperor!

Subscribers: mgorny, xazax.hun, cfe-commits

Differential Revision: https://reviews.llvm.org/D36664

llvm-svn: 311569
2017-08-23 16:28:26 +00:00
Craig Topper f1417ca625 [X86] Remove X86ISD::FMADD in favor ISD::FMA
There's no reason to have a target specific node with the same semantics as a target independent opcode.

This should simplify D36335 so that it doesn't need to touch X86ISelDAGToDAG.cpp

Differential Revision: https://reviews.llvm.org/D36983

llvm-svn: 311568
2017-08-23 16:28:04 +00:00
Yonghong Song c6d2571031 bpf: close the file descriptor after probe inside getHostCPUNameForBPF
Signed-off-by: Yonghong Song <yhs@fb.com>
llvm-svn: 311567
2017-08-23 16:24:31 +00:00
Krasimir Georgiev 48a9f36876 Revert "[clang-format] Emit absolute splits before lines for comments"
This reverts commit r311559, which added a test containing raw string
literals in macros, which chokes gcc:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55971

llvm-svn: 311566
2017-08-23 15:58:10 +00:00
Hans Wennborg 66f6fc0a49 LowerAtomic: Don't skip optnone functions; atomic still need lowering (PR34020)
The lowering isn't really an optimization, so optnone shouldn't make a
difference. ARM relies on the pass running when using "-mthread-model
single", because in that mode, it doesn't run AtomicExpand. See bug for
more details.

Differential Revision: https://reviews.llvm.org/D37040

llvm-svn: 311565
2017-08-23 15:43:28 +00:00
Ilya Biryukov b2c0794e30 Fixed invalid variable name in Dockerfile scripts.
LLVM_SVN_REVISION was used instead of LLVM_SVN_REV.
This caused a revision option to be ignored in Dockerfiles.

llvm-svn: 311564
2017-08-23 15:36:44 +00:00
Saleem Abdulrasool 75cfabef35 Headers: give _Unwind_Control_Block double-word alignment
The C++ ABI requires that the exception object (which under AEABI is the
`_Unwind_Control_Block`) is double-word aligned.  The attribute was
applied to the `_Unwind_Exception` type, but not the
`_Unwind_Control_Block`.  This should fix the libunwind test for the
alignment of the exception type.

llvm-svn: 311563
2017-08-23 15:35:33 +00:00
Saleem Abdulrasool 5b389f1cf7 unwind: explicitly align `_Unwind_Control_Block`
The C++ ABI requires that the exception object is double-word aligned.
The alignment attribute was applied to the `_Unwind_Exception` type
which is used on non-EHABI targets.  On EHABI, the exception object type
is `_Unwind_Control_Block`.  Apply the explicit maximal alignment on the
type to ensure that the allocation has the correct alignment.

Resolves PR33858!

llvm-svn: 311562
2017-08-23 15:33:45 +00:00
Nico Weber 699670e764 Implement CFG construction for __try / __except / __leave.
This makes -Wunreachable-code work for programs containing SEH (except for
__finally, which is still missing for now).

__try is modeled like try (but simpler since it can only have a single __except
or __finally), __except is fairly similar to catch (but simpler, since it can't
contain declarations). __leave is implemented similarly to break / continue.

Use the existing addTryDispatchBlock infrastructure (which
FindUnreachableCode() in ReachableCode.cpp uses via cfg->try_blocks_begin()) to
mark things in the __except blocks as reachable.

Re-use TryTerminatedBlock. This means we add EH edges from calls to the __try
block, but not from all other statements. While this is incomplete, it matches
LLVM's SEH codegen support. Also, in practice, BuildOpts.AddEHEdges is always
false in practice from what I can tell, so we never even insert the call EH
edges either.

https://reviews.llvm.org/D36914

llvm-svn: 311561
2017-08-23 15:33:16 +00:00
Victor Leschuk 3697ebe25f Revert r311546 as it breaks build
http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/4394

llvm-svn: 311560
2017-08-23 15:21:10 +00:00
Krasimir Georgiev 7f7c3dc0aa [clang-format] Emit absolute splits before lines for comments
Summary:
This patch makes the splits emitted for the beginning of comment lines during
reformatting absolute. Previously, they were relative to the start of the
non-whitespace content of the line, which messes up further TailOffset
calculations in breakProtrudingToken. This fixes an assertion failure reported
in bug 34236: https://bugs.llvm.org/show_bug.cgi?id=34236.

Reviewers: djasper

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D36956

llvm-svn: 311559
2017-08-23 15:16:47 +00:00
Victor Leschuk 9f11c0bddf Make lit :: shtest-format.py supported on Windows again
It was marked as unsupported on Windows in r311230 because on some Win10 
machines it failed or caused hang. The problem was that on these machines
system bash (C:\Windows\System32\bash.exe) was used which requires paths to be
passed like '/mnt/c/path/to/my/script' instead of 'C:\path\to\my\script'.

TODO: we should make lit detect if system bash is used instead of msys and set
appropriate path format.

llvm-svn: 311558
2017-08-23 14:59:09 +00:00
Rui Ueyama a93f087d3e Revert r311552: [Bash-autocompletion] Add support for static analyzer flags
This reverts commit r311552 because it broke ubsan and asan bots.

llvm-svn: 311557
2017-08-23 14:48:58 +00:00
Gor Nishanov 2f55b958b1 [coroutines] CoroBegin from inner coroutines should be considered for spills
Summary:
If a coroutine outer calls another coroutine inner and the inner coroutine body is inlined into the outer, coro.begin from the inner coroutine should be considered for spilling if accessed across suspends.

Prior to this change, coroutine frame building code was not considering any coro.begins for spilling.
With this change, we only ignore coro.begin for the current coroutine, but, any coro.begins that were inlined into the current coroutine are eligible for spills.

Fixes PR34267

Reviewers: GorNishanov

Subscribers: qcolombet, llvm-commits, EricWF

Differential Revision: https://reviews.llvm.org/D37062

llvm-svn: 311556
2017-08-23 14:47:52 +00:00
Oleg Ranevskyy 6c75b51bb5 [ARM][Compiler-rt] Fix AEABI builtins to correctly pass arguments to non-AEABI functions on HF targets
Summary:
This is a patch for PR34167.

On HF targets functions like `__{eq,lt,le,ge,gt}df2` and `__{eq,lt,le,ge,gt}sf2` expect their arguments to be passed in d/s registers, while some of the AEABI builtins pass them in r registers.

Reviewers: compnerd, peter.smith, asl

Reviewed By: peter.smith, asl

Subscribers: peter.smith, aemerson, dberris, javed.absar, llvm-commits, asl, kristof.beyls

Differential Revision: https://reviews.llvm.org/D36675

llvm-svn: 311555
2017-08-23 14:26:31 +00:00
Chad Rosier 8db41e9dbd [Reassociate] Don't canonicalize x + (-Constant * y) -> x - (Constant * y)..
..if the resulting subtract will be broken up later.  This can cause us to get
into an infinite loop.

x + (-5.0 * y)      -> x - (5.0 * y)       ; Canonicalize neg const
x - (5.0 * y)       -> x + (0 - (5.0 * y)) ; Break up subtract
x + (0 - (5.0 * y)) -> x + (-5.0 * y)      ; Replace 0-X with X*-1.

PR34078

llvm-svn: 311554
2017-08-23 14:10:06 +00:00
Michael Kruse 06ed529205 Add more statistics.
Add statistics about
- Which optimizations are applied
- Number of loops in Scops at various stages
- Number of scalar/singleton writes at various stages representative
  for scalar false dependencies
- Number of parallel loops

These will be useful to find regressions due to moving Polly further
down of LLVM's pass pipeline.

Differential Revision: https://reviews.llvm.org/D37049

llvm-svn: 311553
2017-08-23 13:50:30 +00:00
Yuka Takahashi 5e7071f5d7 [Bash-autocompletion] Add support for static analyzer flags
Summary:
This is a patch for clang autocomplete feature.

It will collect values which -analyzer-checker takes, which is defined in
clang/StaticAnalyzer/Checkers/Checkers.inc, dynamically.
First, from ValuesCode class in Options.td, TableGen will generate C++
code in Options.inc. Options.inc will be included in DriverOptions.cpp, and
calls OptTable's addValues function. addValues function will add second
argument to Option's Values class. Values contains string like "foo,bar,.."
which is handed to Values class
in OptTable.

Reviewers: v.g.vassilev, teemperor, ruiu

Subscribers: hiraditya, cfe-commits

Differential Revision: https://reviews.llvm.org/D36782

llvm-svn: 311552
2017-08-23 13:39:47 +00:00
Michael Kruse 7fac28fa4f [ScopDetect] Include zero-iteration loops in loop count.
Loop with zero iteration are, syntactically, loops. They have been
excluded from the loop counter even for the non-profitable counters.
This seems to be unintentially as the sentinel value of '0' minimal
iterations does exclude such loops.

Fix by never considering the iteration count when the sentinel
value of 0 is found.

This makes the recently added NumTotalLoops couter redundant
with NumLoopsOverall, which now is equivalent. Hence, NumTotalLoops
is removed as well.

Note: The test case 'ScopDetect/statistics.ll' effectively does not
check profitability, because -polly-process-unprofitable is passed
to all test cases.

llvm-svn: 311551
2017-08-23 13:29:59 +00:00
Michael Kruse 99fba1fd52 [ScopInliner] Fix hidden overload warning. NFC.
By exposing the the hidden member, but as private.

llvm-svn: 311550
2017-08-23 13:07:43 +00:00
Michael Kruse a1579aab46 [MaximumStaticExpansion] Avoid warning in release builds.
Conditionally compile function only used in an assert().

llvm-svn: 311549
2017-08-23 12:50:02 +00:00
Michael Kruse 3044dc51cf [PPCGCodeGen] Fix compiler warning: '<': signed/unsigned mismatch. NFC.
MSVC warns about comparison between a signed and unsigned integer.
The rules of C(++) define that an unsigned comparison has to be
carried-out in this case. This is unlikely to be intended.

Fix by assigning the loop's upper bound to a signed integer first.
This also avoids repeated evaluation of the invariant upper bound.

llvm-svn: 311548
2017-08-23 12:45:25 +00:00
Michael Kruse 594386e773 [ScopInfo] Remove stray semicolon. NFC.
llvm-svn: 311547
2017-08-23 12:34:37 +00:00
Daniel Sanders c3885c4589 [globalisel][tablegen] Add support for ImmLeaf without SDNodeXForm
Summary:
This patch adds support for predicates on imm nodes but only for ImmLeaf and not for PatLeaf or PatFrag and only where the value does not need to be transformed before being rendered into the instruction.

The limitation on PatLeaf/PatFrag/SDNodeXForm is due to differences in the necessary target-supplied C++ for GlobalISel.

Depends on D36085

Reviewers: ab, t.p.northover, qcolombet, rovka, aditya_nandakumar

Reviewed By: rovka

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

Differential Revision: https://reviews.llvm.org/D36086

llvm-svn: 311546
2017-08-23 12:14:18 +00:00
Florian Hahn 5b92960091 [ARM] Check for assembler instructions in test.
Currently this test causes test failures on some machines, due to isel not being registered. Update the test to run all passes and check emitted assembly instructions for now. 

llvm-svn: 311545
2017-08-23 11:53:24 +00:00
Johannes Altmanninger 1aa18f2063 Fix typos, remove unused private members of CommonOptionsParser, NFC
llvm-svn: 311544
2017-08-23 10:43:26 +00:00
Florian Hahn 214e13d949 [ARM] Add missing patterns for insert_subvector.
Summary: In some cases, shufflevector instruction can be transformed involving insert_subvector instructions. The ARM backend was missing some insert_subvector patterns, causing a failure during instruction selection. AArch64 has similar patterns.

Reviewers: t.p.northover, olista01, javed.absar, rengolin

Reviewed By: javed.absar

Subscribers: aemerson, kristof.beyls, llvm-commits

Differential Revision: https://reviews.llvm.org/D36796

llvm-svn: 311543
2017-08-23 10:20:59 +00:00
Daniel Sanders 499807079b [globalisel][tablegen] Add tests for FeatureBitsets and ComplexPattern predicates.
llvm-svn: 311542
2017-08-23 10:09:25 +00:00
Davide Italiano 06d9eda150 [gold] Test we don't strip globals when producing relocatables.
lld was broken in this regard (PR33097). The gold plugin gets this
right so, no changes needed, but better adding a test.

llvm-svn: 311541
2017-08-23 09:43:41 +00:00
Davide Italiano c78885818a [InstCombine] Fold branches with irrelevant conditions to a constant.
InstCombine folds instructions with irrelevant conditions to undef.
This, as Nuno confirmed is a bug.
(see https://bugs.llvm.org/show_bug.cgi?id=33409#c1 )

Given the original motivation for the change is that of removing an
USE, we now fold to false instead (which reaches the same goal
without undesired side effects).

Fixes PR33409.

Differential Revision:  https://reviews.llvm.org/D36975

llvm-svn: 311540
2017-08-23 09:14:37 +00:00
Hiroshi Inoue cc555bd0ac [PowerPC] better instruction selection for OR (XOR) with a 32-bit immediate
- recommitting after fixing a test failure on MacOS

On PPC64, OR (XOR) with a 32-bit immediate can be done with only two instructions, i.e. ori + oris.
But the current LLVM generates three or four instructions for this purpose (and also it clobbers one GPR).

This patch makes PPC backend generate ori + oris (xori + xoris) for OR (XOR) with a 32-bit immediate.

e.g. (x | 0xFFFFFFFF) should be

	ori 3, 3, 65535
	oris 3, 3, 65535

but LLVM generates without this patch

	li 4, 0
	oris 4, 4, 65535
	ori 4, 4, 65535
	or 3, 3, 4

Differential Revision: https://reviews.llvm.org/D34757

llvm-svn: 311538
2017-08-23 08:55:18 +00:00
George Rimar de2d1066ae [ELF] - Do not report multiple errors for single one in ScriptLexer::setError.
Previously up to 3 errors were reported at once,
with patch we always will report only one,
just like in other linker code.

Differential revision: https://reviews.llvm.org/D37015

llvm-svn: 311537
2017-08-23 08:48:39 +00:00
George Rimar 55f207fb1f [ELF] - Repair dynsym-pie.s testcase.
It was broken from begining, because visibility
attributes were not applied properly to
symbols before this patch.

Differential revision: https://reviews.llvm.org/D36966

llvm-svn: 311536
2017-08-23 08:42:35 +00:00
Krasimir Georgiev 3d55cef48b [AArch64] Silence unused variable warning in opt mode after r311533
llvm-svn: 311535
2017-08-23 08:40:22 +00:00
George Rimar 51d193f8b3 [ELF] - Fix for "Bug 34238 - LTO is optimizing away symbols referenced from linker scripts"
Code suggested by Rui Ueyama in PR34238 comments.

Previously LTO optimized away symbols referenced from linker script
because did not see that them are used from regular objects.

Patch adds such symbols as undefined earlier, before running LTO,
what sets IsUsedInRegularObj for them and fixes the issue.

Differential revision: https://reviews.llvm.org/D37009

llvm-svn: 311534
2017-08-23 08:37:22 +00:00
Sjoerd Meijer 24c98189ed [AArch64] ISel legalization debug messages. NFCI.
Debugging AArch64 instruction legalization and custom lowering is really an
unpleasant experience because it shows nodes that appear out of thin air.
In commit r311444, some debug messages have been added to SelectionDAG, the
target independent part, and this patch adds some AArch64 specific messages.

Differential Revision: https://reviews.llvm.org/D36964

llvm-svn: 311533
2017-08-23 08:18:37 +00:00
Krasimir Georgiev 4a9c260751 [clang-format] Align trailing comments if ColumnLimit is 0
Summary:
ColumnLimit = 0 means no limit, so comment should always be aligned if requested. This was broken with

  https://llvm.org/svn/llvm-project/cfe/trunk@304687

introduced via

  https://reviews.llvm.org/D33830

and is included in 5.0.0-rc2. This commit fixes it and adds a unittest for this property.

Should go into clang-5.0 IMHO.

Contributed by @pboettch!

Reviewers: djasper, krasimir

Reviewed By: djasper, krasimir

Subscribers: hans, klimek

Differential Revision: https://reviews.llvm.org/D36967

llvm-svn: 311532
2017-08-23 07:18:36 +00:00
Alex Bradbury d5d559421f [Lanai] Remove dead functions from LanaiRegisterInfo
getEHExceptionRegister and getEHHandlerRegister are unused and were removed 
from most backends in rL192099. This patch removes them from Lanai.

Differential Revision: https://reviews.llvm.org/D36829

llvm-svn: 311531
2017-08-23 07:14:48 +00:00
Hiroshi Inoue dbb285ca51 Revert rL311526: [PowerPC] better instruction selection for OR (XOR) with a 32-bit immediate
This reverts commit rL311526 due to failures in some buildbot.

llvm-svn: 311530
2017-08-23 06:38:05 +00:00
Craig Topper a85f86225a [InstCombine] Remove unused argument. NFC
llvm-svn: 311529
2017-08-23 05:46:09 +00:00
Craig Topper a94069fb4c [InstCombine] Replace a simple matcher with a plain old dyn_cast. NFC
llvm-svn: 311528
2017-08-23 05:46:08 +00:00
Craig Topper 524c44f74e [InstCombine] Remove an unnecessary dyn_cast to Instruction and a switch over two opcodes. Just dyn_cast to the specific instruction classes individually. NFC
Change the helper methods to take the more specific class as well.

llvm-svn: 311527
2017-08-23 05:46:07 +00:00
Hiroshi Inoue c4449df1b0 [PowerPC] better instruction selection for OR (XOR) with a 32-bit immediate
On PPC64, OR (XOR) with a 32-bit immediate can be done with only two instructions, i.e. ori + oris.
But the current LLVM generates three or four instructions for this purpose (and also it clobbers one GPR).

This patch makes PPC backend generate ori + oris (xori + xoris) for OR (XOR) with a 32-bit immediate.

e.g. (x | 0xFFFFFFFF) should be

	ori 3, 3, 65535
	oris 3, 3, 65535

but LLVM generates without this patch

	li 4, 0
	oris 4, 4, 65535
	ori 4, 4, 65535
	or 3, 3, 4

Differential Revision: https://reviews.llvm.org/D34757

llvm-svn: 311526
2017-08-23 05:15:15 +00:00
Dean Michael Berris 0884b73220 [XRay][CodeGen] Use PIC-friendly code in XRay sleds; remove synthetic references in .text
Summary:
This change achieves two things:

  - Redefine the Custom Event handling instrumentation points emitted by
    the compiler to not require dynamic relocation of references to the
    __xray_CustomEvent trampoline.

  - Remove the synthetic reference we emit at the end of a function that
    we used to keep auxiliary sections alive in favour of SHF_LINK_ORDER
    associated with the section where the function is defined.

To achieve the custom event handling change, we've had to introduce the
concept of sled versioning -- this will need to be supported by the
runtime to allow us to understand how to turn on/off the new version of
the custom event handling sleds. That change has to land first before we
change the way we write the sleds.

To remove the synthetic reference, we rely on a relatively new linker
feature that preserves the sections that are associated with each other.
This allows us to limit the effects on the .text section of ELF
binaries.

Because we're still using absolute references that are resolved at
runtime for the instrumentation map (and function index) maps, we mark
these sections write-able. In the future we can re-define the entries in
the map to use relative relocations instead that can be statically
determined by the linker. That change will be a bit more invasive so we
defer this for later.

Depends on D36816.

Reviewers: dblaikie, echristo, pcc

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D36615

llvm-svn: 311525
2017-08-23 04:49:41 +00:00
Dean Michael Berris 71f88a955d [XRay][compiler-rt] Support sled versioning for custom event sleds
Summary:
This change introduces versions to the instrumentation map entries we
emit for XRay instrumentaiton points. The status quo for the version is
currently set to 0 (as emitted by the LLVM back-end), and versions will
count up to 255 (unsigned char).

This change is in preparation for supporting the newer version of the
custom event sleds that will be emitted by the LLVM compiler.

While we're here, we take the opportunity to stash more registers and
align the stack properly in the __xray_CustomEvent trampoline.

Reviewers: kpw, pcc, dblaikie

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D36816

llvm-svn: 311524
2017-08-23 04:42:37 +00:00
Yonghong Song c4ea1010c1 bpf: add -mcpu=# support for bpf
-mcpu=# will support:
  . generic: the default insn set
  . v1: insn set version 1, the same as generic
  . v2: insn set version 2, version 1 + additional jmp insns
  . probe: the compiler will probe the underlying kernel to
           decide proper version of insn set.

Examples:
$ clang -target bpf -mcpu=v1 -c t.c
$ clang -target bpf -mcpu=v2 -c t.c
$ clang -target bpf -mcpu=generic -c t.c
$ clang -target bpf -mcpu=probe -c t.c
$ clang -target bpf -mcpu=v3 -c t.c
error: unknown target CPU 'v3'

Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
llvm-svn: 311523
2017-08-23 04:26:17 +00:00
Yonghong Song dc1dbf6ef3 bpf: add variants of -mcpu=# and support for additional jmp insns
-mcpu=# will support:
  . generic: the default insn set
  . v1: insn set version 1, the same as generic
  . v2: insn set version 2, version 1 + additional jmp insns
  . probe: the compiler will probe the underlying kernel to
           decide proper version of insn set.

We did not not use -mcpu=native since llc/llvm will interpret -mcpu=native
as the underlying hardware architecture regardless of -march value.

Currently, only x86_64 supports -mcpu=probe. Other architecture will
silently revert to "generic".

Also added -mcpu=help to print available cpu parameters.
llvm will print out the information only if there are at least one
cpu and at least one feature. Add an unused dummy feature to
enable the printout.

Examples for usage:
$ llc -march=bpf -mcpu=v1 -filetype=asm t.ll
$ llc -march=bpf -mcpu=v2 -filetype=asm t.ll
$ llc -march=bpf -mcpu=generic -filetype=asm t.ll
$ llc -march=bpf -mcpu=probe -filetype=asm t.ll
$ llc -march=bpf -mcpu=v3 -filetype=asm t.ll
'v3' is not a recognized processor for this target (ignoring processor)
...
$ llc -march=bpf -mcpu=help -filetype=asm t.ll
Available CPUs for this target:

  generic - Select the generic processor.
  probe   - Select the probe processor.
  v1      - Select the v1 processor.
  v2      - Select the v2 processor.

Available features for this target:

  dummy - unused feature.

Use +feature to enable a feature, or -feature to disable it.
For example, llc -mcpu=mycpu -mattr=+feature1,-feature2
...

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
llvm-svn: 311522
2017-08-23 04:25:57 +00:00