platform/upstream/llvm.git
6 years agoTableGen: Explicitly test some cases of self-references and !cast errors
Nicolai Haehnle [Mon, 19 Mar 2018 14:14:10 +0000 (14:14 +0000)]
TableGen: Explicitly test some cases of self-references and !cast errors

Summary:
These are cases of self-references that exist today in practice. Let's
add tests for them to avoid regressions.

The self-references in PPCInstrInfo.td can be expressed in a simpler
way. Allowing this type of self-reference while at the same time
consistently doing late-resolve even for self-references is problematic
because there are references to fields that aren't in any class. Since
there's no need for this type of self-reference anyway, let's just
remove it.

Change-Id: I914e0b3e1ae7adae33855fac409b536879bc3f62

Reviewers: arsenm, craig.topper, tra, MartinO

Subscribers: nemanjai, wdng, kbarton, llvm-commits

Differential Revision: https://reviews.llvm.org/D44474

llvm-svn: 327848

6 years agoTableGen: Only fold when some operand made resolve progress
Nicolai Haehnle [Mon, 19 Mar 2018 14:14:04 +0000 (14:14 +0000)]
TableGen: Only fold when some operand made resolve progress

Summary:
Make sure that we always fold immediately, so there's no point in
attempting to re-fold when nothing changes.

Change-Id: I069e1989455b6f2ca8606152f6adc1a5e817f1c8

Reviewers: arsenm, craig.topper, tra, MartinO

Subscribers: wdng, llvm-commits

Differential Revision: https://reviews.llvm.org/D44198

llvm-svn: 327847

6 years agoTableGen: Remove OpInit::Fold
Nicolai Haehnle [Mon, 19 Mar 2018 14:13:59 +0000 (14:13 +0000)]
TableGen: Remove OpInit::Fold

Summary:
Virtual dispatch is not actually used anywhere.

Change-Id: I9829c5c59920ea27fb9bc17f1442156a3bb09a65

Reviewers: arsenm, craig.topper, tra, MartinO

Subscribers: wdng, llvm-commits

Differential Revision: https://reviews.llvm.org/D44197

llvm-svn: 327846

6 years agoTableGen: Move GenStrConcat to a helper function in BinOpInit
Nicolai Haehnle [Mon, 19 Mar 2018 14:13:54 +0000 (14:13 +0000)]
TableGen: Move GenStrConcat to a helper function in BinOpInit

Summary:
Make it accessible for more users.

Change-Id: Ib05f09ba14e7942ced5d2f24b205efa285e40cd5

Reviewers: arsenm, craig.topper, tra, MartinO

Subscribers: wdng, llvm-commits

Differential Revision: https://reviews.llvm.org/D44196

llvm-svn: 327845

6 years agoTableGen: Remove the cast-from-string-to-variable-reference feature
Nicolai Haehnle [Mon, 19 Mar 2018 14:13:37 +0000 (14:13 +0000)]
TableGen: Remove the cast-from-string-to-variable-reference feature

Summary:
Cast-from-string for records isn't going away, but cast-from-string for
variables is a pretty dodgy feature to have, especially when referencing
template arguments. It's doubtful that this ever worked in a reliable
way, and nobody seems to be using it, so let's get rid of it and get
some related cleanups.

Change-Id: I395ac8a43fef4cf98e611f2f552300d21e99b66a

Reviewers: arsenm, craig.topper, tra, MartinO

Subscribers: wdng, llvm-commits

Differential Revision: https://reviews.llvm.org/D44195

llvm-svn: 327844

6 years agoAMDGPU/GlobalISel: RegBankSelect for basic int ops
Matt Arsenault [Mon, 19 Mar 2018 14:07:23 +0000 (14:07 +0000)]
AMDGPU/GlobalISel: RegBankSelect for basic int ops

llvm-svn: 327843

6 years agoAMDGPU: Don't leave dead illegal VGPR->SGPR copies
Matt Arsenault [Mon, 19 Mar 2018 14:07:15 +0000 (14:07 +0000)]
AMDGPU: Don't leave dead illegal VGPR->SGPR copies

Normally DCE kills these, but at -O0 these get left behind
leaving suspicious looking illegal copies.

Replace with IMPLICIT_DEF to avoid iterator issues.

llvm-svn: 327842

6 years ago[NFC] Fix minor typos in comments
Karl-Johan Karlsson [Mon, 19 Mar 2018 13:48:40 +0000 (13:48 +0000)]
[NFC] Fix minor typos in comments

llvm-svn: 327841

6 years ago[MergeICmps] Re-land 324317 "Enable the MergeICmps Pass by default."
Clement Courbet [Mon, 19 Mar 2018 13:37:04 +0000 (13:37 +0000)]
[MergeICmps] Re-land 324317 "Enable the MergeICmps Pass by default."

Now that PR36557 is fixed.

llvm-svn: 327840

6 years ago[ARM] Support for v4f16 and v8f16 vectors
Sjoerd Meijer [Mon, 19 Mar 2018 13:35:25 +0000 (13:35 +0000)]
[ARM] Support for v4f16 and v8f16 vectors

This is the groundwork for adding the Armv8.2-A FP16 vector intrinsics, which
uses v4f16 and v8f16 vector operands and return values. All the moving parts
are tested with two intrinsics, a 1-operand v8f16 and a 2-operand v4f16
intrinsic. In a follow-up patch the rest of the intrinsics and tests will be
added.

Differential Revision: https://reviews.llvm.org/D44538

llvm-svn: 327839

6 years agoStylish change. NFC
Xin Tong [Mon, 19 Mar 2018 13:35:23 +0000 (13:35 +0000)]
Stylish change. NFC

llvm-svn: 327838

6 years ago[llvm-mca] Add pipeline stall events.
Andrea Di Biagio [Mon, 19 Mar 2018 13:23:07 +0000 (13:23 +0000)]
[llvm-mca] Add pipeline stall events.

This patch introduces a new class named HWStallEvent (see HWEventListener.h),
and updates the event listener interface. A HWStallEvent represents a pipeline
stall caused by the lack of hardware resources. Similarly to HWInstructionEvent,
the event type is an unsigned, and the exact meaning depends on the subtarget.
At the moment, HWStallEvent supports a few generic dispatch events.

The main goals of this patch is to remove the logic that counts dispatch stalls
from the DispatchUnit to the BackendStatistics view.

Previously, DispatchUnit was responsible for counting and classifying dispatch
stall events. With this patch, we delegate the task of counting and classifying
stall events to the listeners (i.e. in our case, it is view
"BackendStatistics"). So, the DispatchUnit doesn't have to do extra
(unnecessary) bookkeeping.

This patch also helps futher simplifying the Backend interface. Now class
BackendStatistics no longer has to query the Backend interface to obtain the
number of dispatch stalls. As a consequence, we can get rid of all the
'getNumXXX()' methods from class Backend.
The long term goal is to remove all the remaining dependencies between the
Backend and the BackendStatistics interface.

Differential Revision: https://reviews.llvm.org/D44621

llvm-svn: 327837

6 years ago[ARM] Pass half or i16 types for NEON intrinsics
Sjoerd Meijer [Mon, 19 Mar 2018 13:22:49 +0000 (13:22 +0000)]
[ARM] Pass half or i16 types for NEON intrinsics

For generating NEON intrinsics, this determines the NEON data type, and whether
it should be a half type or an i16 type. I.e., we always pass a half type for
AArch64, this hasn't changed, but now also for ARM but only when FullFP16 is
enabled, and i16 otherwise.

This is intended to be non-functional change, but together with the backend
work in D44538 which adds support for f16 vectors, this enables adding the
AArch32 FP16 (vector) intrinsics.

Differential Revision: https://reviews.llvm.org/D44561

llvm-svn: 327836

6 years agobuild_llvm_package.bat: Drop LLDB from the package.
Hans Wennborg [Mon, 19 Mar 2018 13:05:37 +0000 (13:05 +0000)]
build_llvm_package.bat: Drop LLDB from the package.

I don't think anyone ever got this to work, what with getting exactly
the right Python dependency and so on. Removing it simplifies the
script, removes a number of hairy dependencies, and cuts ~30 MB off the
installer size.

llvm-svn: 327835

6 years ago[SystemZ] Bugfix of CC liveness in emitMemMemWrapper (CLC).
Jonas Paulsson [Mon, 19 Mar 2018 13:05:22 +0000 (13:05 +0000)]
[SystemZ]  Bugfix of CC liveness in emitMemMemWrapper (CLC).

If DoneMBB becomes empty it must have CC added to its live-in list, since it
will fall-through into EndMBB. This happens when the CLC loop does the
complete range.

Review: Ulrich Weigand
llvm-svn: 327834

6 years ago[clang-tidy] New check bugprone-unused-return-value
Alexander Kornienko [Mon, 19 Mar 2018 13:02:32 +0000 (13:02 +0000)]
[clang-tidy] New check bugprone-unused-return-value

Summary:
Detects function calls where the return value is unused.

Checked functions can be configured.

Reviewers: alexfh, aaron.ballman, ilya-biryukov, hokein

Reviewed By: alexfh, aaron.ballman

Subscribers: hintonda, JonasToth, Eugene.Zelenko, mgorny, xazax.hun, cfe-commits

Tags: #clang-tools-extra

Patch by Kalle Huttunen!

Differential Revision: https://reviews.llvm.org/D41655

llvm-svn: 327833

6 years agoHexagonISelLowering.cpp: fix 'enum in bool context' warning
Hans Wennborg [Mon, 19 Mar 2018 12:55:58 +0000 (12:55 +0000)]
HexagonISelLowering.cpp: fix 'enum in bool context' warning

llvm-svn: 327832

6 years ago[RISCV] Peephole optimisation for load/store of global values or constant addresses
Alex Bradbury [Mon, 19 Mar 2018 11:54:28 +0000 (11:54 +0000)]
[RISCV] Peephole optimisation for load/store of global values or constant addresses

(load (add base, off), 0) -> (load base, off)
(store val, (add base, off)) -> (store val, base, off)

This is similar to an equivalent peephole optimisation in PPCISelDAGToDAG.

llvm-svn: 327831

6 years ago[MSan] fix the types of RegSaveAreaPtrPtr and OverflowArgAreaPtrPtr
Alexander Potapenko [Mon, 19 Mar 2018 10:08:04 +0000 (10:08 +0000)]
[MSan] fix the types of RegSaveAreaPtrPtr and OverflowArgAreaPtrPtr

Despite their names, RegSaveAreaPtrPtr and OverflowArgAreaPtrPtr
used to be i8* instead of i8**.

This is important, because these pointers are dereferenced twice
(first in CreateLoad(), then in getShadowOriginPtr()), but for some
reason MSan allowed this - most certainly because it was possible
to optimize getShadowOriginPtr() away at compile time.

Differential revision: https://reviews.llvm.org/D44520

llvm-svn: 327830

6 years ago[MSan] Don't create zero offsets in getShadowPtrForArgument(). NFC
Alexander Potapenko [Mon, 19 Mar 2018 10:03:47 +0000 (10:03 +0000)]
[MSan] Don't create zero offsets in getShadowPtrForArgument(). NFC

For MSan instrumentation with MS.ParamTLS and MS.ParamOriginTLS being
TLS variables, the CreateAdd() with ArgOffset==0 is a no-op, because
the compiler is able to fold the addition of 0.

But for KMSAN, which receives ParamTLS and ParamOriginTLS from a call
to the runtime library, this introduces a stray instruction which
complicates reading/testing the IR.

Differential revision: https://reviews.llvm.org/D44514

llvm-svn: 327829

6 years ago[MSan] Introduce insertWarningFn(). NFC
Alexander Potapenko [Mon, 19 Mar 2018 09:59:44 +0000 (09:59 +0000)]
[MSan] Introduce insertWarningFn(). NFC

This is a step towards the upcoming KMSAN implementation patch.
KMSAN is going to use a different warning function,
__msan_warning_32(uptr origin), so we'd better create the warning
calls in one place.

Differential Revision: https://reviews.llvm.org/D44513

llvm-svn: 327828

6 years ago[ARM] Fix warnings about missing parentheses in ARMAsmParser
Mikhail Maltsev [Mon, 19 Mar 2018 09:48:58 +0000 (09:48 +0000)]
[ARM] Fix warnings about missing parentheses in ARMAsmParser

llvm-svn: 327827

6 years ago[SCEV] Factor out isKnownViaInduction. NFC.
Serguei Katkov [Mon, 19 Mar 2018 08:32:09 +0000 (08:32 +0000)]
[SCEV] Factor out isKnownViaInduction. NFC.

This just extracts the isKnownViaInduction from isKnownPredicate.

Reviewers: sanjoy, mkazantsev, reames
Reviewed By: mkazantsev
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D44554

llvm-svn: 327824

6 years ago[ELF] Recommit 327248 with Arm using the .got for _GLOBAL_OFFSET_TABLE_
Peter Smith [Mon, 19 Mar 2018 06:52:51 +0000 (06:52 +0000)]
[ELF] Recommit 327248 with Arm using the .got for _GLOBAL_OFFSET_TABLE_

This is the same as 327248 except Arm defining _GLOBAL_OFFSET_TABLE_ to
be the base of the .got section as some existing code is relying upon it.

For most Targets the _GLOBAL_OFFSET_TABLE_ symbol is expected to be at
the start of the .got.plt section so that _GLOBAL_OFFSET_TABLE_[0] =
reserved value that is by convention the address of the dynamic section.
Previously we had defined _GLOBAL_OFFSET_TABLE_ as either the start or end
of the .got section with the intention that the .got.plt section would
follow the .got. However this does not always hold with the current
default section ordering so _GLOBAL_OFFSET_TABLE_[0] may not be consistent
with the reserved first entry of the .got.plt.

X86, X86_64 and AArch64 will use the .got.plt. Arm, Mips and Power use .got

Fixes PR36555

Differential Revision: https://reviews.llvm.org/D44259

llvm-svn: 327823

6 years ago[SCEV] Re-land: Fix isKnownPredicate
Serguei Katkov [Mon, 19 Mar 2018 06:35:30 +0000 (06:35 +0000)]
[SCEV] Re-land: Fix isKnownPredicate

This is re-land of https://reviews.llvm.org/rL327362 with a fix
and regression test.

The crash was due to it is possible that for found MDL loop,
LHS or RHS may contain an invariant unknown SCEV which
does not dominate the MDL. Please see regression
test for an example.

Reviewers: sanjoy, mkazantsev, reames
Reviewed By: mkazantsev
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D44553

llvm-svn: 327822

6 years ago[X86] Merge XADD8rr regular expression with XADD16rr/XADD32rr/XADD64rr in a couple...
Craig Topper [Mon, 19 Mar 2018 04:21:42 +0000 (04:21 +0000)]
[X86] Merge XADD8rr regular expression with XADD16rr/XADD32rr/XADD64rr in a couple scheduler models.

llvm-svn: 327821

6 years ago[X86] Add ADD16i16/ADD32i32/ADD64i32 and similar to the scheduler models to match...
Craig Topper [Mon, 19 Mar 2018 04:21:40 +0000 (04:21 +0000)]
[X86] Add ADD16i16/ADD32i32/ADD64i32 and similar to the scheduler models to match ADD8i8.

Also move ADC8i8 and SBB8i8 in the Sandy Bridge model to the same class as ADC8ri and SBB8ri. That seems more accurate since its the 8i8 is just the register forced to AL instead of coming from modrm.

llvm-svn: 327820

6 years ago[X6] Remove two unused InstrItinClass
Craig Topper [Mon, 19 Mar 2018 02:07:32 +0000 (02:07 +0000)]
[X6] Remove two unused InstrItinClass

llvm-svn: 327819

6 years agoremainder: Port from amd builtins
Jan Vesely [Mon, 19 Mar 2018 01:01:10 +0000 (01:01 +0000)]
remainder: Port from amd builtins

Mostly ported from amd_builtins, uses only denormal path for fp32.
Passes CTS on carrizo and turks

Reviewer: Aaron Watry <awatry@gmail.com>
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
llvm-svn: 327818

6 years ago[X86] Use IIC_CMOV64_RR/RM on 64-bit cmov instructions.
Craig Topper [Mon, 19 Mar 2018 00:56:12 +0000 (00:56 +0000)]
[X86] Use IIC_CMOV64_RR/RM on 64-bit cmov instructions.

llvm-svn: 327817

6 years ago[X86] Merge 32 and 64-bit RORX/SHLX/SARX/SHRX into single regular expressions in...
Craig Topper [Mon, 19 Mar 2018 00:56:11 +0000 (00:56 +0000)]
[X86] Merge 32 and 64-bit RORX/SHLX/SARX/SHRX into single regular expressions in scheduler models.

llvm-svn: 327816

6 years ago[X86] Merge 8-bit instructions into instregex with 16/32/64 instructions in the sched...
Craig Topper [Mon, 19 Mar 2018 00:56:09 +0000 (00:56 +0000)]
[X86] Merge 8-bit instructions into instregex with 16/32/64 instructions in the scheduler models as much as possible. NFCI

This reduces the total number of generated scheduler classes from 5404 to 5316.

llvm-svn: 327815

6 years ago[AVR] Lower i128 divisions to runtime library calls
Dylan McKay [Mon, 19 Mar 2018 00:55:50 +0000 (00:55 +0000)]
[AVR] Lower i128 divisions to runtime library calls

This patch adds i128 division support by instruction LLVM to lower
128-bit divisions to the __udivmodti4 and __divmodti4 rtlib functions.

This also adds test for 64-bit division and 128-bit division.

Patch by Peter Nimmervoll.

llvm-svn: 327814

6 years ago[Mips] Remove duplicate lines from MipsScheduleP5600.td and enable FullInstRWOverlapC...
Craig Topper [Sun, 18 Mar 2018 22:16:54 +0000 (22:16 +0000)]
[Mips] Remove duplicate lines from MipsScheduleP5600.td and enable FullInstRWOverlapCheck.

This fixes the errors found by the new check added in r327808.

llvm-svn: 327813

6 years ago[AArch64] Fix a few InstRWs in the A53 scheduler model and enable FullInstRWOverlapCheck.
Craig Topper [Sun, 18 Mar 2018 22:16:53 +0000 (22:16 +0000)]
[AArch64] Fix a few InstRWs in the A53 scheduler model and enable FullInstRWOverlapCheck.

This fixes the errors found by the new check added in r327808.

llvm-svn: 327812

6 years ago[SelectionDAG] Don't default the SelectionDAG* parameter to SDValue::dump to nullptr...
Craig Topper [Sun, 18 Mar 2018 21:28:11 +0000 (21:28 +0000)]
[SelectionDAG] Don't default the SelectionDAG* parameter to SDValue::dump to nullptr. Use two different signatures instead.

This matches what we do in SDNode.

This should allow SDValue::dump to be used in the debugger without getting an error if you don't pass an argument.

llvm-svn: 327811

6 years agoMove the codebase to use: DWARFCompileUnit -> DWARFUnit
Jan Kratochvil [Sun, 18 Mar 2018 20:11:02 +0000 (20:11 +0000)]
Move the codebase to use: DWARFCompileUnit -> DWARFUnit

Now the codebase can use the DWARFUnit superclass. It will make it later
seamlessly work also with DWARFPartialUnit for DWZ.

This patch is only a search-and-replace easily undone, nothing interesting
in it.

Differential revision: https://reviews.llvm.org/D42892

llvm-svn: 327810

6 years agoDWARFUnit split out of DWARFCompileUnit
Jan Kratochvil [Sun, 18 Mar 2018 20:09:02 +0000 (20:09 +0000)]
DWARFUnit split out of DWARFCompileUnit

DW_TAG_partial_unit for DWZ can be then presented by DWARFPartialUnit also
inherited from DWARFUnit.

Differential revision: https://reviews.llvm.org/D40466

llvm-svn: 327809

6 years ago[TableGen] When trying to reuse a scheduler class for instructions from an InstRW...
Craig Topper [Sun, 18 Mar 2018 19:56:15 +0000 (19:56 +0000)]
[TableGen] When trying to reuse a scheduler class for instructions from an InstRW, make sure we haven't already seen another InstRW containing this instruction on this CPU.

This is similar to the check later when we remap some of the instructions from one class to a new one. But if we reuse the class we don't get to do that check.

So many CPUs have violations of this check that I had to add a flag to the SchedMachineModel to allow it to be disabled. Hopefully we can get those cleaned up quickly and remove this flag.

A lot of the violations are due to overlapping regular expressions, but that's not the only kind of issue it found.

llvm-svn: 327808

6 years ago[X86][Btver2] Fix crc32 schedule costs
Simon Pilgrim [Sun, 18 Mar 2018 19:54:42 +0000 (19:54 +0000)]
[X86][Btver2] Fix crc32 schedule costs

The default is currently FAdd for some reason

llvm-svn: 327807

6 years agoUpdated C++2a status with changes from Jacksonville WG21 meeting
Marshall Clow [Sun, 18 Mar 2018 19:29:21 +0000 (19:29 +0000)]
Updated C++2a status with changes from Jacksonville WG21 meeting

llvm-svn: 327806

6 years ago[X86][Btver2] Add crc32 resource tests
Simon Pilgrim [Sun, 18 Mar 2018 18:55:34 +0000 (18:55 +0000)]
[X86][Btver2] Add crc32 resource tests

llvm-svn: 327805

6 years ago[X86][Btver2] FADD/FHADD ymm instructions are double pumped on the JFPA functional...
Simon Pilgrim [Sun, 18 Mar 2018 18:45:57 +0000 (18:45 +0000)]
[X86][Btver2] FADD/FHADD ymm instructions are double pumped on the JFPA functional pipe

llvm-svn: 327804

6 years ago[X86][Btver2] Float bitwise ymm instructions are double pumped on the JFPX (JFPA...
Simon Pilgrim [Sun, 18 Mar 2018 17:10:12 +0000 (17:10 +0000)]
[X86][Btver2] Float bitwise ymm instructions are double pumped on the JFPX (JFPA/JFPM) functional pipes

llvm-svn: 327803

6 years agoResolve unused variable 'VR' warning in RetainCountChecker.cpp
Bjorn Pettersson [Sun, 18 Mar 2018 16:07:20 +0000 (16:07 +0000)]
Resolve unused variable 'VR' warning in RetainCountChecker.cpp

Getting rid of
  error: unused variable 'VR' [-Werror,-Wunused-variable]
warning/error at
  lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp:1933

llvm-svn: 327802

6 years ago[X86][Btver2] F16C instructions are performed on the JSTC functional pipe
Simon Pilgrim [Sun, 18 Mar 2018 15:59:51 +0000 (15:59 +0000)]
[X86][Btver2] F16C instructions are performed on the JSTC functional pipe

llvm-svn: 327801

6 years ago[LICM] Salvage DI from dying Instructions
Anastasis Grammenos [Sun, 18 Mar 2018 15:59:19 +0000 (15:59 +0000)]
[LICM] Salvage DI from dying Instructions

LICM deletes trivially dead instructions which it won't attempt to sink.
Attempt to salvage debug values which reference these instructions.

llvm-svn: 327800

6 years ago[InstCombine] peek through unsigned FP casts for zero-equality compares (PR36682)
Roman Lebedev [Sun, 18 Mar 2018 15:53:02 +0000 (15:53 +0000)]
[InstCombine] peek through unsigned FP casts for zero-equality compares (PR36682)

Summary:
This pattern came up in PR36682 / D44390
https://bugs.llvm.org/show_bug.cgi?id=36682
https://reviews.llvm.org/D44390
https://godbolt.org/g/oKvT5H

See also D44416

Reviewers: spatel, majnemer, efriedma, arsenm

Reviewed By: spatel

Subscribers: wdng, llvm-commits

Differential Revision: https://reviews.llvm.org/D44424

llvm-svn: 327799

6 years ago[llvm-mca] Allow the definition of multiple register files.
Andrea Di Biagio [Sun, 18 Mar 2018 15:33:27 +0000 (15:33 +0000)]
[llvm-mca] Allow the definition of multiple register files.

This is a refactoring in preparation for other two changes that will allow
scheduling models to define multiple register files. This is the first step
towards fixing PR36662.

class RegisterFile (in Dispatch.h) now can emulate multiple register files.
Internally, it tracks the number of available physical registers in each
register file (described by class RegisterFileInfo).

Each register file is associated to a list of MCRegisterClass indices. Knowing
the register class indices allows to map physical registers to register files.

The long term goal is to allow processor models to optionally specify how many
register files are implemented via tablegen.

Differential Revision: https://reviews.llvm.org/D44488

llvm-svn: 327798

6 years ago[InstCombine] add nnan requirement for sqrt(x) * sqrt(y) -> sqrt(x*y)
Sanjay Patel [Sun, 18 Mar 2018 14:32:54 +0000 (14:32 +0000)]
[InstCombine] add nnan requirement for sqrt(x) * sqrt(y) -> sqrt(x*y)

This is similar to D43765.

llvm-svn: 327797

6 years ago[InstSimplify] loosen FMF for sqrt(X) * sqrt(X) --> X
Sanjay Patel [Sun, 18 Mar 2018 14:12:25 +0000 (14:12 +0000)]
[InstSimplify] loosen FMF for sqrt(X) * sqrt(X) --> X

As shown in the code comment, we don't need all of 'fast',
but we do need reassoc + nsz + nnan.

Differential Revision: https://reviews.llvm.org/D43765

llvm-svn: 327796

6 years ago[X86][Btver2] Strip default latency/resource values. NFCI.
Simon Pilgrim [Sun, 18 Mar 2018 13:16:11 +0000 (13:16 +0000)]
[X86][Btver2] Strip default latency/resource values. NFCI.

llvm-svn: 327795

6 years ago[X86][Btver2] SSE4A EXTRQ/INSERTQ instructions are performed on the JVALU0/JVALU1...
Simon Pilgrim [Sun, 18 Mar 2018 13:05:09 +0000 (13:05 +0000)]
[X86][Btver2] SSE4A EXTRQ/INSERTQ instructions are performed on the JVALU0/JVALU1 functional pipes

llvm-svn: 327794

6 years ago[X86][Btver2] Modelled float bitwise instructions as being performed on the float...
Simon Pilgrim [Sun, 18 Mar 2018 12:37:35 +0000 (12:37 +0000)]
[X86][Btver2] Modelled float bitwise instructions as being performed on the float cluster (FPA/FPM) not the integer.

llvm-svn: 327793

6 years ago[dsymutil] Fix add_llvm_tool_symlink
Jonas Devlieghere [Sun, 18 Mar 2018 12:27:05 +0000 (12:27 +0000)]
[dsymutil] Fix add_llvm_tool_symlink

Update the arguments to add_llvm_tool_symlink to symlink llvm-dsymutil
to dsymutil.

llvm-svn: 327792

6 years ago[X86][Btver2] Correctly distinguish between scheduling pipe and functional unit for...
Simon Pilgrim [Sun, 18 Mar 2018 12:09:17 +0000 (12:09 +0000)]
[X86][Btver2] Correctly distinguish between scheduling pipe and functional unit for JWriteResFpuPair defs

Jaguar's FPU has 2 scheduler pipes (JFPU0/JFPU1) which forward to multiple functional sub-units each. We need to model that an micro-op will both consume the scheduler pipe and a functional unit.

This patch just handles the ops defined through JWriteResFpuPair, I'll go through the custom cases later.

llvm-svn: 327791

6 years ago[dsymutil] Rename llvm-dsymutil -> dsymutil
Jonas Devlieghere [Sun, 18 Mar 2018 11:38:41 +0000 (11:38 +0000)]
[dsymutil] Rename llvm-dsymutil -> dsymutil

Now that almost all functionality of Apple's dsymutil has been
upstreamed, the open source variant can be used as a drop in
replacement. Hence we feel it's no longer necessary to have the llvm
prefix.

Differential revision: https://reviews.llvm.org/D44527

llvm-svn: 327790

6 years ago[X86][Btver2] Merge equivalent VBLENDVY + VPERMILY schedule groups
Simon Pilgrim [Sun, 18 Mar 2018 10:22:35 +0000 (10:22 +0000)]
[X86][Btver2] Merge equivalent VBLENDVY + VPERMILY schedule groups

Thanks to Craig Topper for noticing this.

llvm-svn: 327789

6 years ago[X86][Btver2] Add llvm-mca tests to show pipe resource usage of most vector instructions
Simon Pilgrim [Sun, 18 Mar 2018 09:32:38 +0000 (09:32 +0000)]
[X86][Btver2] Add llvm-mca tests to show pipe resource usage of most vector instructions

Hopefully these tests can be easily reused should any other subtarget get in depth llvm-mca coverage (we can either copy the tests or move them into a common dir and run it with multiple prefixes).

llvm-svn: 327788

6 years ago[X86] Fix a bunch of overlapping regular expressions in the scheduler models.
Craig Topper [Sun, 18 Mar 2018 08:38:06 +0000 (08:38 +0000)]
[X86] Fix a bunch of overlapping regular expressions in the scheduler models.

llvm-svn: 327787

6 years ago[X86] Fix a couple typos in the Zen scheduler model.
Craig Topper [Sun, 18 Mar 2018 08:38:04 +0000 (08:38 +0000)]
[X86] Fix a couple typos in the Zen scheduler model.

llvm-svn: 327786

6 years ago[TableGen] Remove unnecessary uses of make_range.
Craig Topper [Sun, 18 Mar 2018 08:38:03 +0000 (08:38 +0000)]
[TableGen] Remove unnecessary uses of make_range.

llvm-svn: 327785

6 years ago[TableGen] Move some variables into for loop declaration. NFC
Craig Topper [Sun, 18 Mar 2018 08:38:02 +0000 (08:38 +0000)]
[TableGen] Move some variables into for loop declaration. NFC

They aren't needed after the loop.

llvm-svn: 327784

6 years ago[X86] Remove MMX_MASKMOVQ64 and VMASKMOVDQU from scheduler models.
Craig Topper [Sun, 18 Mar 2018 03:24:42 +0000 (03:24 +0000)]
[X86] Remove MMX_MASKMOVQ64 and VMASKMOVDQU from scheduler models.

The information was so wildly inaccurate and incomplete its better to just remove it.

MMX_MASKMOVQ64 showed up twice in several scheduler models. In Haswell and Broadwell they were on adjacent lines. On Skylake the copies had different information.

MMX_MASKMOVQ and MASKMOVDQU were completely missing.

MMX_MASKMOVQ64 was listed on Haswell/Broadwell as 1 cycle on port 1 despite it being a store instruction.

Filed PR36780 to track fixing this right.

llvm-svn: 327783

6 years ago[C++17] Allow an empty expression in an if init statement
Zhihao Yuan [Sat, 17 Mar 2018 21:42:10 +0000 (21:42 +0000)]
[C++17] Allow an empty expression in an if init statement

Summary:
This fixes [PR35381](https://llvm.org/pr35381) and an additional bug where clang didn't warn about the C++17 extension when having an expression in the init statement.

Thanks Nicolas Lesser for contributing the patch.

Reviewers: rsmith

Reviewed By: rsmith

Subscribers: erik.pilkington, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D40445

llvm-svn: 327782

6 years agoImplement DR2229, which prohibits unnamed bit-fields from having qualifiers in C++.
Aaron Ballman [Sat, 17 Mar 2018 21:08:40 +0000 (21:08 +0000)]
Implement DR2229, which prohibits unnamed bit-fields from having qualifiers in C++.

llvm-svn: 327781

6 years agoFix codegen for structured binding binding in conditions
Zhihao Yuan [Sat, 17 Mar 2018 21:01:27 +0000 (21:01 +0000)]
Fix codegen for structured binding binding in conditions

Summary:
The codegen for conditions assumes that a normal variable declaration is used in a condition, but this is not the case when a structured binding is used.

This fixes [PR36747](http://llvm.org/pr36747).

Thanks Nicolas Lesser for contributing the patch.

Reviewers: lichray, rsmith

Reviewed By: lichray

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D44534

llvm-svn: 327780

6 years ago[AArch64] Skip an unnecessary getCopyToReg in DYNAMIC_STACKALLOC
Martin Storsjo [Sat, 17 Mar 2018 20:08:48 +0000 (20:08 +0000)]
[AArch64] Skip an unnecessary getCopyToReg in DYNAMIC_STACKALLOC

Differential Revision: https://reviews.llvm.org/D44586

llvm-svn: 327779

6 years agoRevert "[DAG, X86] Revert r327197 "Revert r327170, r327171, r327172""
Nirav Dave [Sat, 17 Mar 2018 19:24:54 +0000 (19:24 +0000)]
Revert "[DAG, X86] Revert r327197 "Revert r327170, r327171, r327172""

as it times out building test-suite on PPC.

llvm-svn: 327778

6 years ago[DAG, X86] Revert r327197 "Revert r327170, r327171, r327172"
Nirav Dave [Sat, 17 Mar 2018 17:42:10 +0000 (17:42 +0000)]
[DAG, X86] Revert r327197 "Revert r327170, r327171, r327172"

Reland ISel cycle checking improvements after simplifying and reducing
node id invariant traversal.

llvm-svn: 327777

6 years agoFix some user facing typos
Sylvestre Ledru [Sat, 17 Mar 2018 17:30:08 +0000 (17:30 +0000)]
Fix some user facing typos

llvm-svn: 327776

6 years ago[Driver] Fix the descriptions for -Tdata and -Ttext options
Aaron Smith [Sat, 17 Mar 2018 15:24:35 +0000 (15:24 +0000)]
[Driver] Fix the descriptions for -Tdata and -Ttext options

Reviewers: llvm-commits

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D44581

llvm-svn: 327775

6 years agoAMDGPU/GlobalISel: Cleanup constant legality
Matt Arsenault [Sat, 17 Mar 2018 15:17:48 +0000 (15:17 +0000)]
AMDGPU/GlobalISel: Cleanup constant legality

llvm-svn: 327774

6 years agoAMDGPU/GlobalISel: Basic G_GEP legality
Matt Arsenault [Sat, 17 Mar 2018 15:17:45 +0000 (15:17 +0000)]
AMDGPU/GlobalISel: Basic G_GEP legality

llvm-svn: 327773

6 years agoAMDGPU/GlobalISel: Basic legality for load/store
Matt Arsenault [Sat, 17 Mar 2018 15:17:41 +0000 (15:17 +0000)]
AMDGPU/GlobalISel: Basic legality for load/store

llvm-svn: 327772

6 years ago[bindings/go] Add a missing `,` in the test code to fix a go compile
Chandler Carruth [Sat, 17 Mar 2018 15:12:52 +0000 (15:12 +0000)]
[bindings/go] Add a missing `,` in the test code to fix a go compile
failure.

llvm-svn: 327771

6 years ago[cxx_status] Add entry for the Reflection TS.
Richard Smith [Sat, 17 Mar 2018 14:34:21 +0000 (14:34 +0000)]
[cxx_status] Add entry for the Reflection TS.

llvm-svn: 327770

6 years ago[cxx_status] Update to match Jacksonville 2018 motions.
Richard Smith [Sat, 17 Mar 2018 14:28:47 +0000 (14:28 +0000)]
[cxx_status] Update to match Jacksonville 2018 motions.

Also rearrange how we list DR motions: rather than listing them as part of some
later standard, list them against the feature they are a DR against. Explicitly
add a description of how we handle DRs.

llvm-svn: 327769

6 years agoAdding nocf_check attribute for cf-protection fine tuning
Oren Ben Simhon [Sat, 17 Mar 2018 13:31:35 +0000 (13:31 +0000)]
Adding nocf_check attribute for cf-protection fine tuning

The patch adds nocf_check target independent attribute for disabling checks that were enabled by cf-protection flag.
The attribute can be appertained to functions and function pointers.
Attribute name follows GCC's similar attribute name.

Differential Revision: https://reviews.llvm.org/D41880

llvm-svn: 327768

6 years ago[X86] Added support for nocf_check attribute for indirect Branch Tracking
Oren Ben Simhon [Sat, 17 Mar 2018 13:29:46 +0000 (13:29 +0000)]
[X86] Added support for nocf_check attribute for indirect Branch Tracking

X86 Supports Indirect Branch Tracking (IBT) as part of Control-Flow Enforcement Technology (CET).
IBT instruments ENDBR instructions used to specify valid targets of indirect call / jmp.
TheĀ `nocf_check` attribute has two roles in the context of X86 IBT technology:
1. Appertains to a function - do not add ENDBR instruction at the beginning of the function.
2. Appertains to a function pointer - do not track the target function of this pointer by adding nocf_check prefix to the indirect-call instruction.

This patch implementsĀ `nocf_check` context for Indirect Branch Tracking.
It also auto generatesĀ `nocf_check` prefixes before indirect branchs to jump tables that are guarded by range checks.

Differential Revision: https://reviews.llvm.org/D41879

llvm-svn: 327767

6 years ago[SystemZ] Add 'REQUIRES: asserts' to test case using debug output.
Jonas Paulsson [Sat, 17 Mar 2018 09:15:13 +0000 (09:15 +0000)]
[SystemZ]  Add 'REQUIRES: asserts' to test case using debug output.

llvm-svn: 327766

6 years ago[SystemZ] computeKnownBitsForTargetNode() / ComputeNumSignBitsForTargetNode()
Jonas Paulsson [Sat, 17 Mar 2018 08:32:12 +0000 (08:32 +0000)]
[SystemZ]  computeKnownBitsForTargetNode() / ComputeNumSignBitsForTargetNode()

Improve/implement these methods to improve DAG combining. This mainly
concerns intrinsics.

Some constant operands to SystemZISD nodes have been marked Opaque to avoid
transforming back and forth between generic and target nodes infinitely.

Review: Ulrich Weigand
llvm-svn: 327765

6 years ago[SelectionDAG] Handle big endian target BITCAST in computeKnownBits()
Jonas Paulsson [Sat, 17 Mar 2018 08:04:00 +0000 (08:04 +0000)]
[SelectionDAG]  Handle big endian target BITCAST in computeKnownBits()

The BITCAST handling in computeKnownBits() previously only worked for little
endian.

This patch reverses the iteration over elements for a big endian target which
allows this to work in this case also.

SystemZ test case.

Review: Eli Friedman
https://reviews.llvm.org/D44249

llvm-svn: 327764

6 years agoBugfix, extern declarations for libomp functions are `extern "C"` declarations
George Rokos [Sat, 17 Mar 2018 02:07:42 +0000 (02:07 +0000)]
Bugfix, extern declarations for libomp functions are `extern "C"` declarations

llvm-svn: 327763

6 years agoRevert "Mmap interceptor new option, Write Exec runtime detector"
Vitaly Buka [Sat, 17 Mar 2018 00:31:41 +0000 (00:31 +0000)]
Revert "Mmap interceptor new option, Write Exec runtime detector"

Breaks Android bot.

This reverts commit r327747.

llvm-svn: 327762

6 years ago[GlobalsAA] Fix a pretty terrible bug that has been in GlobalsAA for
Chandler Carruth [Fri, 16 Mar 2018 23:51:33 +0000 (23:51 +0000)]
[GlobalsAA] Fix a pretty terrible bug that has been in GlobalsAA for
a long time.

The key thing is that we need to create value handles for every function
that we create a `FunctionInfo` object around. Without this, when that
function is deleted we can end up creating a new function that collides
with its address and look up a stale AA result. With that AA result we
can in turn miscompile code in ways that break.

This is seriously one of the most absurd miscompiles I've seen. It only
reproduced for us recently and only when building a very large server
with both ThinLTO and PGO.

A *HUGE* shout out to Wei Mi who tracked all of this down and came up
with this patch. I'm just landing it because I happened to still by at
a computer.

He or I can work on crafting a test case to hit this (now that we know
what to target) but it'll take a while, and we've been chasing this for
a long time and need it fix Right Now.

llvm-svn: 327761

6 years ago[MachineOutliner] Make KILLs invisible
Jessica Paquette [Fri, 16 Mar 2018 22:53:34 +0000 (22:53 +0000)]
[MachineOutliner] Make KILLs invisible

At the point the outliner runs, KILLs don't impact anything, but they're still
considered unique instructions. This commit makes them invisible like
DebugValues so that they can still be outlined without impacting outlining
decisions.

llvm-svn: 327760

6 years ago[Fuzzer] Build the shared memory hooks for Fuchsia
Petr Hosek [Fri, 16 Mar 2018 22:40:55 +0000 (22:40 +0000)]
[Fuzzer] Build the shared memory hooks for Fuchsia

This is needed otherwise we'll get undefined references when trying
to use the libFuzzer built for Fuchsia.

Differential Revision: https://reviews.llvm.org/D44590

llvm-svn: 327759

6 years agoOpenBSD UBsan support final missing bits
Vitaly Buka [Fri, 16 Mar 2018 22:29:29 +0000 (22:29 +0000)]
OpenBSD UBsan support final missing bits

Summary:
One forgotten file change + reordering one header due to clang-format

Patch by David CARLIER

Reviewers: vitalybuka, vsk

Subscribers: kubamracek, fedor.sergeev, llvm-commits, #sanitizers

Differential Revision: https://reviews.llvm.org/D44556

llvm-svn: 327758

6 years ago[llvm-mca] Remove method getSchedModel() from the Backend.
Andrea Di Biagio [Fri, 16 Mar 2018 22:21:52 +0000 (22:21 +0000)]
[llvm-mca] Remove method getSchedModel() from the Backend.

llvm-svn: 327756

6 years ago[MS] Fix bug in r327732 with devirtualized complete destructor calls
Reid Kleckner [Fri, 16 Mar 2018 22:20:57 +0000 (22:20 +0000)]
[MS] Fix bug in r327732 with devirtualized complete destructor calls

llvm-svn: 327754

6 years agoFix the Windows build after r327750
Frederic Riss [Fri, 16 Mar 2018 22:19:58 +0000 (22:19 +0000)]
Fix the Windows build after r327750

llvm-svn: 327753

6 years ago[asan] Replace vfork with fork.
Evgeniy Stepanov [Fri, 16 Mar 2018 22:15:05 +0000 (22:15 +0000)]
[asan] Replace vfork with fork.

Summary:
vfork is not ASan-friendly because it modifies stack shadow in the
parent process address space. While it is possible to compensate for that with, for example,
__asan_handle_no_return before each call to _exit or execve and friends, simply replacing
vfork with fork looks like by far the easiest solution.

Posix compliant programs can not detect the difference between vfork and fork.

Fixes https://github.com/google/sanitizers/issues/925

Reviewers: kcc, vitalybuka

Subscribers: kubamracek, llvm-commits

Differential Revision: https://reviews.llvm.org/D44587

llvm-svn: 327752

6 years ago[DWARFASTParserClang] Complete external record types before using them as a decl...
Frederic Riss [Fri, 16 Mar 2018 22:12:22 +0000 (22:12 +0000)]
[DWARFASTParserClang] Complete external record types before using them as a decl context.

Summary:
When in a gmodules-like debugging scenario, you can have a parent decl context
that gets imported from an external AST. When this happens, we must be careful
to complete this type before adding children to it, otherwise it sometimes
results in a crash.

Reviewers: clayborg, jingham

Subscribers: aprantl, JDevlieghere, lldb-commits

Differential Revision: https://reviews.llvm.org/D43592

llvm-svn: 327750

6 years ago[llvm-mca] Remove unused methods from Backend. NFC
Andrea Di Biagio [Fri, 16 Mar 2018 22:02:47 +0000 (22:02 +0000)]
[llvm-mca] Remove unused methods from Backend. NFC

llvm-svn: 327749

6 years ago[asan] Remove empty fork interceptor.
Evgeniy Stepanov [Fri, 16 Mar 2018 21:31:49 +0000 (21:31 +0000)]
[asan] Remove empty fork interceptor.

After a partial revert, ASan somehow ended up with an empty interceptor for fork().

llvm-svn: 327748

6 years agoMmap interceptor new option, Write Exec runtime detector
Vitaly Buka [Fri, 16 Mar 2018 21:25:09 +0000 (21:25 +0000)]
Mmap interceptor new option, Write Exec runtime detector

Summary: Following-up the refactoring of mmap interceptors, adding a new common option to detect PROT_WRITE|PROT_EXEC pages request.

Patch by David CARLIER

Reviewers: vitalybuka, vsk

Reviewed By: vitalybuka

Subscribers: krytarowski, #sanitizers

Differential Revision: https://reviews.llvm.org/D44194

llvm-svn: 327747

6 years ago[Analysis] Fix some Clang-tidy modernize and Include What You Use warnings; other...
Eugene Zelenko [Fri, 16 Mar 2018 21:22:42 +0000 (21:22 +0000)]
[Analysis] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).

llvm-svn: 327746

6 years agoQuiet unused variable warnings. NFC.
David L Kreitzer [Fri, 16 Mar 2018 21:21:23 +0000 (21:21 +0000)]
Quiet unused variable warnings. NFC.

Differential revision: https://reviews.llvm.org/D44583

llvm-svn: 327745

6 years ago[X86] Pass SelectionDAG into X86ISelAddressMode::dump and on to SDNode::dump.
Craig Topper [Fri, 16 Mar 2018 21:10:07 +0000 (21:10 +0000)]
[X86] Pass SelectionDAG into X86ISelAddressMode::dump and on to SDNode::dump.

This prevents a crash in SelectionDAGDumper with -debug when trying to print mem operands if one of the registers in the addressing mode comes from a load.

llvm-svn: 327744