platform/upstream/llvm.git
7 years agoFilter out invalid 'target' items from being passed to LLVM
Erich Keane [Fri, 27 Oct 2017 18:32:23 +0000 (18:32 +0000)]
Filter out invalid 'target' items from being passed to LLVM

Craig noticed that CodeGen wasn't properly ignoring the
values sent to the target attribute. This patch ignores
them.

This patch also sets the 'default' for this checking to
'supported', since only X86 has implemented the support
for checking valid CPU names and Feature Names.

One test was changed to i686, since it uses a lakemont,
which would otherwise be prohibited in x86_64.

Differential Revision: https://reviews.llvm.org/D39357

llvm-svn: 316783

7 years agoHandle all symbol types in --trace.
Rafael Espindola [Fri, 27 Oct 2017 18:30:11 +0000 (18:30 +0000)]
Handle all symbol types in --trace.

One case I was not sure was lazy symbols. bfd skips them completely,
but that is probably an artifact of how they implement archives.

llvm-svn: 316782

7 years agoRemove x86,x86_32/64 from isValidFeatureName
Erich Keane [Fri, 27 Oct 2017 18:29:02 +0000 (18:29 +0000)]
Remove x86,x86_32/64 from isValidFeatureName

These are not valid values for this, and are pretty
non-sensical, since LLVM doesn't understand them.

Differential Revision: https://reviews.llvm.org/D39378

llvm-svn: 316781

7 years ago[refactor] Describe refactorings in the operation classes
Alex Lorenz [Fri, 27 Oct 2017 18:19:11 +0000 (18:19 +0000)]
[refactor] Describe refactorings in the operation classes

This commit changes the way that the refactoring operation classes are
structured:
- Users have to call `initiate` instead of constructing an instance of the
  class. The `initiate` is now supposed to have custom initiation logic, and
  you don't need to subclass the builtin requirements.
- A new `describe` function returns a structure with the id, title and the
  description of the refactoring operation.

The refactoring action classes are now placed into one common place in
RefactoringActions.cpp instead of being separate.

Differential Revision: https://reviews.llvm.org/D38985

llvm-svn: 316780

7 years ago[X86][SSE] Add tests for inserting all-bits (-1) into a vector
Simon Pilgrim [Fri, 27 Oct 2017 18:14:12 +0000 (18:14 +0000)]
[X86][SSE] Add tests for inserting all-bits (-1) into a vector

We should be able to do this by re-materializing an all-bits vector and then blending with it

llvm-svn: 316779

7 years ago[Sema] Fix an assert-on-invalid by avoiding function template specialisation
Alex Lorenz [Fri, 27 Oct 2017 18:13:31 +0000 (18:13 +0000)]
[Sema] Fix an assert-on-invalid by avoiding function template specialisation
deduction for invalid functions

The fabricated template parameters cause an assertion because their depth
is invalid.

rdar://34109988

Differential Revision: https://reviews.llvm.org/D37341

llvm-svn: 316778

7 years ago[WebAssembly] Add crt1.o with calling lld
Sam Clegg [Fri, 27 Oct 2017 18:10:19 +0000 (18:10 +0000)]
[WebAssembly] Add crt1.o with calling lld

Also, for OS unknown targets like wasm, don't include
'unknown' in the library path. This is a fix for rL316719.

Differential Revision: https://reviews.llvm.org/D39354

llvm-svn: 316777

7 years agoInstead of enclosing an entire file, add lld:: specifier for public functions.
Rui Ueyama [Fri, 27 Oct 2017 18:04:49 +0000 (18:04 +0000)]
Instead of enclosing an entire file, add lld:: specifier for public functions.

llvm-svn: 316776

7 years agoELF: Add support for emitting dynamic relocations in the Android relocation packing...
Peter Collingbourne [Fri, 27 Oct 2017 17:49:40 +0000 (17:49 +0000)]
ELF: Add support for emitting dynamic relocations in the Android relocation packing format.

The Android relocation packing format is a more compact
format for dynamic relocations in executables and DSOs
that is based on delta encoding and SLEBs. An overview
of the format can be found in the Android source code:
https://android.googlesource.com/platform/bionic/+/refs/heads/master/tools/relocation_packer/src/delta_encoder.h

This patch implements relocation packing using that format.

This implementation uses a more intelligent algorithm for compressing
relative relocations than Android's own relocation packer. As a
result it can generally create smaller relocation sections than
that packer. If I link Chromium for Android targeting ARM32 I get a
.rel.dyn of size 174693 bytes, as compared to 371832 bytes with gold
and the Android packer.

Differential Revision: https://reviews.llvm.org/D39152

llvm-svn: 316775

7 years ago[clangd] Don't crash on extremely large JSON messages.
Benjamin Kramer [Fri, 27 Oct 2017 17:06:41 +0000 (17:06 +0000)]
[clangd] Don't crash on extremely large JSON messages.

Found by clangd-fuzzer.

llvm-svn: 316774

7 years agoNew lldb python module for managing diagnostic breakpoints
Don Hinton [Fri, 27 Oct 2017 17:02:33 +0000 (17:02 +0000)]
New lldb python module for managing diagnostic breakpoints

Summary:
Can be used to set breakpoints for either the diagnostics actually
emitted for the current compilation, a particular DiagID, or all
DiagIDs for a particular warning.

Differential Revision: https://reviews.llvm.org/D36347

llvm-svn: 316773

7 years agoAdd specific ppc64le hardware watchpoint handler
Pavel Labath [Fri, 27 Oct 2017 17:02:32 +0000 (17:02 +0000)]
Add specific ppc64le hardware watchpoint handler

Summary: Add hardware watchpoint funcionality for ppc64le

Reviewers: clayborg, zturner

Reviewed By: clayborg

Subscribers: eugene, clayborg, zturner, lbianc, gut, nemanjai, alexandreyy, kbarton, lldb-commits

Differential Revision: https://reviews.llvm.org/D38897
Patch by Ana Julia Caetano <ana.caetano@eldorado.org.br>

llvm-svn: 316772

7 years ago[X86][F16C] Fix btver2 AGU pipe scheduling
Simon Pilgrim [Fri, 27 Oct 2017 16:34:58 +0000 (16:34 +0000)]
[X86][F16C] Fix btver2 AGU pipe scheduling

Use the store AGU for stores, and the load AGU needs to be the first pipe for loads

llvm-svn: 316771

7 years ago[clangd] Harden clangd a bit against garbage input.
Benjamin Kramer [Fri, 27 Oct 2017 16:33:15 +0000 (16:33 +0000)]
[clangd] Harden clangd a bit against garbage input.

There can be nullptrs here if the YAML fails to parse. Found by
clangd-fuzzer!

llvm-svn: 316770

7 years ago[ForwardOpTree] Use space indention. NFC.
Michael Kruse [Fri, 27 Oct 2017 14:48:34 +0000 (14:48 +0000)]
[ForwardOpTree] Use space indention. NFC.

llvm-svn: 316769

7 years ago[LoopPredication] Handle the case when the guard and the latch IV have different...
Artur Pilipenko [Fri, 27 Oct 2017 14:46:17 +0000 (14:46 +0000)]
[LoopPredication] Handle the case when the guard and the latch IV have different offsets

This is a follow up change for D37569.

Currently the transformation is limited to the case when:
 * The loop has a single latch with the condition of the form: ++i <pred> latchLimit, where <pred> is u<, u<=, s<, or s<=.
 * The step of the IV used in the latch condition is 1.
 * The IV of the latch condition is the same as the post increment IV of the guard condition.
 * The guard condition is of the form i u< guardLimit.

This patch enables the transform in the case when the latch is

 latchStart + i <pred> latchLimit, where <pred> is u<, u<=, s<, or s<=.

And the guard is

 guardStart + i u< guardLimit

Reviewed By: anna

Differential Revision: https://reviews.llvm.org/D39097

llvm-svn: 316768

7 years ago[clang-tidy] Fix bug 34845, offending standard bitmask types
Jonas Toth [Fri, 27 Oct 2017 14:44:08 +0000 (14:44 +0000)]
[clang-tidy] Fix bug 34845, offending standard bitmask types

Summary:
The C++ standard allows implementations to choose the underlying type for
bitmask types (e.g. std::ios_base::openmode). MSVC implemented some of them
as signed integers resulting in warnings for usual code like
`auto dd = std::ios_base::badbit | std::ios_base::failbit;`

These false positives were reported in https://bugs.llvm.org/show_bug.cgi?id=34845

The fix allows bitwise |,&,^ for known standard bitmask types under the condition
that both operands are such bitmask types.
Shifting and bitwise complement are still forbidden.

Reviewers: aaron.ballman, alexfh, hokein

Reviewed By: aaron.ballman

Subscribers: xazax.hun

Differential Revision: https://reviews.llvm.org/D39099

llvm-svn: 316767

7 years ago[ForwardOpTree] Reload know values.
Michael Kruse [Fri, 27 Oct 2017 14:26:14 +0000 (14:26 +0000)]
[ForwardOpTree] Reload know values.

For scalar accesses, change the access target to an array element that
is known to contain the same value.

This may become an alternative to forwardKnownLoad which creates new
loads (and therefore closer to forwarding speculatives). Reloading does
not require the known value originating from a load, but can be a store
as well.

Differential Revision: https://reviews.llvm.org/D39325

llvm-svn: 316766

7 years ago[CodeGen] Fix -Wunused-private-field warning on lld-x86_64-darwin13.
Clement Courbet [Fri, 27 Oct 2017 13:34:41 +0000 (13:34 +0000)]
[CodeGen] Fix -Wunused-private-field warning on lld-x86_64-darwin13.

llvm-svn: 316765

7 years ago[CrossTU] Fix handling of Cross Translation Unit directory path
Gabor Horvath [Fri, 27 Oct 2017 12:53:37 +0000 (12:53 +0000)]
[CrossTU] Fix handling of Cross Translation Unit directory path

Differential Revision: https://reviews.llvm.org/D38842

llvm-svn: 316764

7 years ago[CodeGen][ExpandMemCmp][NFC] Simplify load sequence generation.
Clement Courbet [Fri, 27 Oct 2017 12:34:18 +0000 (12:34 +0000)]
[CodeGen][ExpandMemCmp][NFC] Simplify load sequence generation.

llvm-svn: 316763

7 years ago[LLVM-C] Publicly expose getters of MetadataType, TokenType
whitequark [Fri, 27 Oct 2017 11:51:40 +0000 (11:51 +0000)]
[LLVM-C] Publicly expose getters of MetadataType, TokenType

Patch by Robert Widmann.

Expose getters for MetadataType and TokenType publicly in the C API.
Discovered a need for these while trying to wrap the intrinsics API.

Differential Revision: https://reviews.llvm.org/D38809

llvm-svn: 316762

7 years ago[ELF] - Ignore non-absolute R_386_GOTPC relocation in debug sections.
George Rimar [Fri, 27 Oct 2017 11:49:24 +0000 (11:49 +0000)]
[ELF] - Ignore non-absolute R_386_GOTPC relocation in debug sections.

This is for PR34852.

GCC 8.0 or earlier have a bug that it emits R_386_GOTPC relocations
against _GLOBAL_OFFSET_TABLE for .debug_info. The bug seems to have
been fixed in 2017: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82630,
but we do not want LLD to report errors for such inputs.
In this patch we ignore such relocations.

Differential revision: https://reviews.llvm.org/D38625

llvm-svn: 316761

7 years ago[ELF] - Stop naming relocation sections with first input section name.
George Rimar [Fri, 27 Oct 2017 11:38:31 +0000 (11:38 +0000)]
[ELF] - Stop naming relocation sections with first input section name.

It was reported (https://reviews.llvm.org/D38724#902841) that when we use
-ffunction-sections --emit-relocs build, REL[A] output section receives the name of first
input section, like .rela.text.first_function_in_text rather than .rela.text.

It is probably not really an issue as sh_info still points to correct target section, but
it does not look clean in output and allows internal section name to leak there,
what at least looks confusing and is not consistent with ld.bfd.

Patch changes this behavior so that target output section name is used as a base.

Differential revision: https://reviews.llvm.org/D39242

llvm-svn: 316760

7 years ago[ELF] - Simplify reporting of garbage collected sections.
George Rimar [Fri, 27 Oct 2017 11:32:22 +0000 (11:32 +0000)]
[ELF] - Simplify reporting of garbage collected sections.

This moves reporting of garbage collected sections right after
we do GC. That simplifies things.

Differential revision: https://reviews.llvm.org/D39058

llvm-svn: 316759

7 years agoTest commit
Ivan Donchevskii [Fri, 27 Oct 2017 11:05:40 +0000 (11:05 +0000)]
Test commit

llvm-svn: 316758

7 years agoFix BB after r316756 "[llvm-dwarfdump] - Teach verifier to report broken DWARF expres...
George Rimar [Fri, 27 Oct 2017 10:58:04 +0000 (10:58 +0000)]
Fix BB after r316756 "[llvm-dwarfdump] - Teach verifier to report broken DWARF expressions."

Bot:
http://lab.llvm.org:8011/builders/clang-with-thin-lto-ubuntu/builds/6255

Changed format of this message by mistake.

llvm-svn: 316757

7 years ago[llvm-dwarfdump] - Teach verifier to report broken DWARF expressions.
George Rimar [Fri, 27 Oct 2017 10:42:04 +0000 (10:42 +0000)]
[llvm-dwarfdump] - Teach verifier to report broken DWARF expressions.

Patch improves next things:

* Fixes assert/crash in getOpDesc when giving it a invalid expression op code.
* DWARFExpression::print() called DWARFExpression::Operation::getEndOffset() which
  returned and used uninitialized field EndOffset. Patch fixes that.
* Teaches verifier to verify DW_AT_location and error out on broken expressions.

Differential revision: https://reviews.llvm.org/D39294

llvm-svn: 316756

7 years ago[ELF][ARM] Add missing REQUIRES: arm to tests
Peter Smith [Fri, 27 Oct 2017 09:16:46 +0000 (09:16 +0000)]
[ELF][ARM] Add missing REQUIRES: arm to tests

My apologies I missed REQUIRES: arm from a couple of Arm specific tests.

llvm-svn: 316755

7 years ago[ELF] Add support for multiple passes to createThunks()
Peter Smith [Fri, 27 Oct 2017 09:07:10 +0000 (09:07 +0000)]
[ELF] Add support for multiple passes to createThunks()

This change allows Thunks to be added on multiple passes. To do this we must
merge only the thunks added in each pass, and deal with thunks that have
drifted out of range of their callers.

A thunk may end out of range of its caller if enough thunks are added in
between the caller and the thunk. To handle this we create another thunk.

Differential Revision: https://reviews.llvm.org/D34692

llvm-svn: 316754

7 years agoDAG: Fold fma (fneg x), K, y -> fma x, -K, y
Matt Arsenault [Fri, 27 Oct 2017 09:06:07 +0000 (09:06 +0000)]
DAG: Fold fma (fneg x), K, y -> fma x, -K, y

llvm-svn: 316753

7 years ago[ELF] Introduce range extension thunks for ARM
Peter Smith [Fri, 27 Oct 2017 09:04:11 +0000 (09:04 +0000)]
[ELF] Introduce range extension thunks for ARM

This change adds initial support for range extension thunks. All thunks must
be created within the first pass so some corner cases are not supported. A
follow up patch will add support for multiple passes.

With this change the existing tests arm-branch-error.s and
arm-thumb-branch-error.s now no longer fail with an out of range branch.
These have been renamed and tests added for the range extension thunk.

Differential Revision: https://reviews.llvm.org/D34691

llvm-svn: 316752

7 years ago[ELF] Pre-create ThunkSections at Target specific intervals
Peter Smith [Fri, 27 Oct 2017 08:58:28 +0000 (08:58 +0000)]
[ELF] Pre-create ThunkSections at Target specific intervals

When an OutputSection is larger than the branch range for a Target we
need to place thunks such that they are always in range of their caller,
and sufficiently spaced to maximise the number of callers that can use
the thunk. We use the simple heuristic of placing the
ThunkSection at intervals corresponding to a target specific branch range.
If the OutputSection is small we put the thunks at the end of the executable
sections.

Differential Revision: https://reviews.llvm.org/D34689

llvm-svn: 316751

7 years ago[ELF] Record created ThunkSections in InputSectionDescription [NFC].
Peter Smith [Fri, 27 Oct 2017 08:56:20 +0000 (08:56 +0000)]
[ELF] Record created ThunkSections in InputSectionDescription [NFC].

Instead of maintaining a map of the std::vector to ThunkSections, record the
ThunkSections directly in InputSectionDescription.

Differential Revision: https://reviews.llvm.org/D37743

llvm-svn: 316750

7 years ago[CodeGen][ExpandMemcmp][NFC] Make tests more complete.
Clement Courbet [Fri, 27 Oct 2017 08:33:51 +0000 (08:33 +0000)]
[CodeGen][ExpandMemcmp][NFC] Make tests more complete.

llvm-svn: 316749

7 years ago[GVN][NFC] Refactor loop iteration with foreach
Max Kazantsev [Fri, 27 Oct 2017 08:19:35 +0000 (08:19 +0000)]
[GVN][NFC] Refactor loop iteration with foreach

llvm-svn: 316748

7 years agoAdd support for dwarf unwinding on windows on x86_64
Martin Storsjo [Fri, 27 Oct 2017 08:11:36 +0000 (08:11 +0000)]
Add support for dwarf unwinding on windows on x86_64

Clang doesn't currently support building for windows/x86_64 with
dwarf by setting command line parameters, but if manually modified
to use dwarf, we can make libunwind work in this configuration
as well.

Also include i386 in the docs when adding this as a supported
configuration; libunwind already works for i386 windows, but
can fail due to an issue unrelated to windows itself.

Differential Revision: https://reviews.llvm.org/D38819

llvm-svn: 316747

7 years agoExpress Registers_*::lastDwarfReg using _LIBUNWIND_HIGHEST_DWARF_REGISTER
Martin Storsjo [Fri, 27 Oct 2017 07:59:01 +0000 (07:59 +0000)]
Express Registers_*::lastDwarfReg using _LIBUNWIND_HIGHEST_DWARF_REGISTER

This avoids having to keep the same information duplicated in multiple
places.

Adjust _LIBUNWIND_HIGHEST_DWARF_REGISTER to actually have the value
of the highest used register and only use the value
_LIBUNWIND_HIGHEST_DWARF_REGISTER + 1 (kMaxRegisterNumber + 1) for
allocating the savedRegisters array.

Differential Revision: https://reviews.llvm.org/D39281

llvm-svn: 316745

7 years ago[clang-tidy ObjC] [3/3] New check objc-forbidden-subclassing
Haojian Wu [Fri, 27 Oct 2017 07:41:36 +0000 (07:41 +0000)]
[clang-tidy ObjC] [3/3] New check objc-forbidden-subclassing

Summary:
This is part 3 of 3 of a series of changes to improve Objective-C
linting in clang-tidy.

This adds a new clang-tidy check `objc-forbidden-subclassing` which
ensures clients do not create subclasses of Objective-C classes which
are not designed to be subclassed.

(Note that for code under your control, you should use
__attribute__((objc_subclassing_restricted)) instead -- this
is intended for third-party APIs which cannot be modified.)

By default, the following classes (which are publicly documented
as not supporting subclassing) are forbidden from subclassing:

ABNewPersonViewController
ABPeoplePickerNavigationController
ABPersonViewController
ABUnknownPersonViewController
NSHashTable
NSMapTable
NSPointerArray
NSPointerFunctions
NSTimer
UIActionSheet
UIAlertView
UIImagePickerController
UITextInputMode
UIWebView

Clients can set a CheckOption
`objc-forbidden-subclassing.ClassNames` to a semicolon-separated
list of class names, which overrides this list.

Test Plan: `ninja check-clang-tools`

Patch by Ben Hamilton!

Reviewers: hokein, alexfh

Reviewed By: hokein

Subscribers: saidinwot, Wizard, srhines, mgorny, xazax.hun

Differential Revision: https://reviews.llvm.org/D39142

llvm-svn: 316744

7 years agollvm/CodeGen/GlobalISel/InstructionSelectorImpl.h: Fix -fmodules build introduced...
NAKAMURA Takumi [Fri, 27 Oct 2017 05:45:11 +0000 (05:45 +0000)]
llvm/CodeGen/GlobalISel/InstructionSelectorImpl.h: Fix -fmodules build introduced in rL316715.

llvm-svn: 316743

7 years agoSimplify logic to find the last executable segment. NFC.
Rui Ueyama [Fri, 27 Oct 2017 05:08:39 +0000 (05:08 +0000)]
Simplify logic to find the last executable segment. NFC.

llvm-svn: 316742

7 years agoFix typo.
Rui Ueyama [Fri, 27 Oct 2017 04:59:33 +0000 (04:59 +0000)]
Fix typo.

llvm-svn: 316741

7 years agoFix a use-after-free in lldb-server
Pavel Labath [Fri, 27 Oct 2017 04:53:24 +0000 (04:53 +0000)]
Fix a use-after-free in lldb-server

UriParser::Parse is returning a StringRef pointing the the parsed
string, but we were calling it with a temporary string. Change this to a
local variable to make sure the string persists as long as we need it.

llvm-svn: 316740

7 years agoRevert rL316568 because of sudden performance drop on ARM
Max Kazantsev [Fri, 27 Oct 2017 04:17:44 +0000 (04:17 +0000)]
Revert rL316568 because of sudden performance drop on ARM

llvm-svn: 316739

7 years agoRemove a boolean flag `Create`. NFC.
Rui Ueyama [Fri, 27 Oct 2017 04:15:28 +0000 (04:15 +0000)]
Remove a boolean flag `Create`. NFC.

llvm-svn: 316738

7 years agoAdd subclass data to the FoldingSetNode for MemIntrinsicSDNodes.
Sean Fertile [Fri, 27 Oct 2017 04:02:51 +0000 (04:02 +0000)]
Add subclass data to the FoldingSetNode for MemIntrinsicSDNodes.

Not having the subclass data on an MemIntrinsicSDNodes means it was possible
to try to fold 2 nodes with the same operands but differing MMO flags. This
would trip an assertion when trying to refine the alignment between the 2
MachineMemOperands.

Differential Revision: https://reviews.llvm.org/D38898

llvm-svn: 316737

7 years agoDefine a file-local write32 as a wrapper for endian::write32.
Rui Ueyama [Fri, 27 Oct 2017 03:59:34 +0000 (03:59 +0000)]
Define a file-local write32 as a wrapper for endian::write32.

llvm-svn: 316736

7 years agoDo not use InputSection::getFile<ELFT>() if InputSection::File suffices. NFC.
Rui Ueyama [Fri, 27 Oct 2017 03:25:04 +0000 (03:25 +0000)]
Do not use InputSection::getFile<ELFT>() if InputSection::File suffices.  NFC.

llvm-svn: 316735

7 years agoDe-template EhFrameHdr. NFC.
Rui Ueyama [Fri, 27 Oct 2017 03:14:24 +0000 (03:14 +0000)]
De-template EhFrameHdr. NFC.

llvm-svn: 316734

7 years agoDe-template EhReader. NFC.
Rui Ueyama [Fri, 27 Oct 2017 03:14:09 +0000 (03:14 +0000)]
De-template EhReader. NFC.

llvm-svn: 316733

7 years agoDe-template elf::getObjMsg. NFC.
Rui Ueyama [Fri, 27 Oct 2017 03:13:54 +0000 (03:13 +0000)]
De-template elf::getObjMsg. NFC.

llvm-svn: 316732

7 years agoDe-template EhFrameSection. NFC.
Rui Ueyama [Fri, 27 Oct 2017 03:13:39 +0000 (03:13 +0000)]
De-template EhFrameSection. NFC.

llvm-svn: 316731

7 years agoMake EhFrameHdr pull data from EhFrameSection. NFC.
Rui Ueyama [Fri, 27 Oct 2017 03:13:24 +0000 (03:13 +0000)]
Make EhFrameHdr pull data from EhFrameSection. NFC.

Previously, EhFrameSection pushes data to EhFrameHdr by calling addFde
function. By making EhFrameHdr pull data from EhFrameSection, we can
eliminate a member from EhFrameHdr.

llvm-svn: 316730

7 years agoDe-template a few functions. NFC.
Rui Ueyama [Fri, 27 Oct 2017 03:13:09 +0000 (03:13 +0000)]
De-template a few functions. NFC.

llvm-svn: 316729

7 years agoDefault to using in-tree clang for building test executables
Pavel Labath [Fri, 27 Oct 2017 02:24:04 +0000 (02:24 +0000)]
Default to using in-tree clang for building test executables

Summary:
Using the in-tree clang should be the default test configuration as that
is the one compiler that we can be sure everyone has (better
reproducibility of test results). Also, it should hopefully reduce the
impact of pr35040.

This also reduces the number of settings which control the compiler
used. LLDB_TEST_C_COMPILER is used for C files and
LLDB_TEST_CXX_COMPILER for C++ files. Both of the settings default to
the in-tree clang.

Reviewers: zturner

Subscribers: mgorny, davide, lldb-commits

Differential Revision: https://reviews.llvm.org/D39215

llvm-svn: 316728

7 years agoAdd Arm Architecture plugin to the xcode project file.
Jason Molenda [Fri, 27 Oct 2017 02:21:55 +0000 (02:21 +0000)]
Add Arm Architecture plugin to the xcode project file.

llvm-svn: 316727

7 years agoInclude an error code when getRandomBytes failed.
Rui Ueyama [Fri, 27 Oct 2017 01:25:29 +0000 (01:25 +0000)]
Include an error code when getRandomBytes failed.

In a rare situation, the function can fail (e.g. it fails if it cannot
open /dev/urandom.)

llvm-svn: 316726

7 years agoFix test/Driver/wasm-toolchain.c on windows
Sam Clegg [Fri, 27 Oct 2017 01:20:16 +0000 (01:20 +0000)]
Fix test/Driver/wasm-toolchain.c on windows

llvm-svn: 316725

7 years ago[Transforms] Fix some Clang-tidy modernize and Include What You Use warnings; other...
Eugene Zelenko [Fri, 27 Oct 2017 01:09:08 +0000 (01:09 +0000)]
[Transforms] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).

llvm-svn: 316724

7 years ago[CodeGen] Add support for IncompleteArrayType in Obj-C ivars.
Volodymyr Sapsai [Fri, 27 Oct 2017 00:56:23 +0000 (00:56 +0000)]
[CodeGen] Add support for IncompleteArrayType in Obj-C ivars.

Fixes an assertion failure when ivar is a struct containing incomplete
array. Also completes support for direct flexible array members.

rdar://problem/21054495

Reviewers: rjmccall, theraven

Reviewed By: rjmccall

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D38774

llvm-svn: 316723

7 years ago[PDB] Handle an empty globals hash table with no buckets
Reid Kleckner [Fri, 27 Oct 2017 00:45:51 +0000 (00:45 +0000)]
[PDB] Handle an empty globals hash table with no buckets

llvm-svn: 316722

7 years agoRevert "[CGP] Merge empty case blocks if no extra moves are added."
Balaram Makam [Fri, 27 Oct 2017 00:35:18 +0000 (00:35 +0000)]
Revert "[CGP] Merge empty case blocks if no extra moves are added."

This reverts commit r316711. The domtree isn't getting updated correctly.

llvm-svn: 316721

7 years ago[LSan] Disable a couple of failing tests on PPC64 (pending investigation).
Alex Shlyapnikov [Fri, 27 Oct 2017 00:29:40 +0000 (00:29 +0000)]
[LSan] Disable a couple of failing tests on PPC64 (pending investigation).

llvm-svn: 316720

7 years ago[WebAssembly] Include libclang_rt.builtins in the standard way
Sam Clegg [Fri, 27 Oct 2017 00:26:07 +0000 (00:26 +0000)]
[WebAssembly] Include libclang_rt.builtins in the standard way

Differential Revision: https://reviews.llvm.org/D39218

llvm-svn: 316719

7 years ago[X86] Add 'sse4' to X86TargetInfo::isValidFeatureName
Craig Topper [Fri, 27 Oct 2017 00:18:16 +0000 (00:18 +0000)]
[X86] Add 'sse4' to X86TargetInfo::isValidFeatureName

sse4 is valid for target attribute and functions as an alias of sse4.2.

llvm-svn: 316718

7 years ago[WebAssembly] MC: Don't allow zero sized data segments
Sam Clegg [Fri, 27 Oct 2017 00:08:55 +0000 (00:08 +0000)]
[WebAssembly] MC: Don't allow zero sized data segments

This ensures that each segment has a unique address.
Without this, consecutive zero sized symbols would
end up with the same address and the linker cannot
map symbols to unique data segments.

Differential Revision: https://reviews.llvm.org/D39107

llvm-svn: 316717

7 years agoRemove an unnecessary inheritance.
Rui Ueyama [Thu, 26 Oct 2017 23:54:00 +0000 (23:54 +0000)]
Remove an unnecessary inheritance.

llvm-svn: 316716

7 years agoInstructionSelectorImpl.h: Modularize/remove ODR violations by using a static member...
David Blaikie [Thu, 26 Oct 2017 23:39:54 +0000 (23:39 +0000)]
InstructionSelectorImpl.h: Modularize/remove ODR violations by using a static member function to expose the debug name

llvm-svn: 316715

7 years agoMCCodePadder.h: Include definition of type for use with DenseMap
David Blaikie [Thu, 26 Oct 2017 23:39:52 +0000 (23:39 +0000)]
MCCodePadder.h: Include definition of type for use with DenseMap

Pointer traits require a full definition of a type to function
correctly, so the header must be included rather than only a forward
declaration.

llvm-svn: 316714

7 years agoUse -fuse-init-array if no gcc installation is found.
Nico Weber [Thu, 26 Oct 2017 23:26:29 +0000 (23:26 +0000)]
Use -fuse-init-array if no gcc installation is found.

clang currently uses .init_array instead of .ctors on Linux if it detects gcc
4.7+. Make it so that it also uses .init_array if no gcc installation is found
at all – if there's no old gcc, there's nothing we need to be compatible with.

icecc for example runs clang in a very small chroot, so before this change
clang would use .ctors if run under icecc. And lld currently silently mislinks
inputs with .ctors sections, so before this clang + icecc + lld would produce
broken binaries. (But this seems like a good change independent of that lld
bug.)

https://reviews.llvm.org/D39317

llvm-svn: 316713

7 years ago[X86] Make -march=i686 an alias of -march=pentiumpro
Craig Topper [Thu, 26 Oct 2017 23:06:19 +0000 (23:06 +0000)]
[X86] Make -march=i686 an alias of -march=pentiumpro

I think the only reason they are different is because we don't set tune_i686 for -march=i686 to match GCC. But GCC 4.9.0 seems to have changed this behavior and they do set it now. So I think they can aliases now.

Differential Revision: https://reviews.llvm.org/D39349

llvm-svn: 316712

7 years ago[CGP] Merge empty case blocks if no extra moves are added.
Balaram Makam [Thu, 26 Oct 2017 22:34:01 +0000 (22:34 +0000)]
[CGP] Merge empty case blocks if no extra moves are added.

Summary:
Currently we skip merging when extra moves may be added in the header of switch instead of the case block, if the case block is used as an incoming
block of a PHI. If all the incoming values of the PHIs are non-constants and the destination block is dominated by the switch block then extra moves are likely not added by ISel, so there is no need to skip merging in this case.

Reviewers: efriedma, junbuml, davidxl, hfinkel, qcolombet

Reviewed By: efriedma

Subscribers: dberlin, kuhar, mcrosier, llvm-commits

Differential Revision: https://reviews.llvm.org/D37343

llvm-svn: 316711

7 years agoSimplify.
Rui Ueyama [Thu, 26 Oct 2017 22:30:25 +0000 (22:30 +0000)]
Simplify.

Because of the same reason as r316600, I don't think we need a guard
against empty relocations.

llvm-svn: 316710

7 years ago[SimplifyIndVars] Shorten code by using SCEV helper [NFC]
Philip Reames [Thu, 26 Oct 2017 22:02:16 +0000 (22:02 +0000)]
[SimplifyIndVars] Shorten code by using SCEV helper [NFC]

llvm-svn: 316709

7 years ago[ARM] Honor -mfloat-abi for libcall calling convention
Eli Friedman [Thu, 26 Oct 2017 21:42:32 +0000 (21:42 +0000)]
[ARM] Honor -mfloat-abi for libcall calling convention

As far as I can tell, this matches gcc: -mfloat-abi determines the
calling convention for all functions except those explicitly defined as
soft-float in the ARM RTABI.

This change only affects cases where the user specifies -mfloat-abi to
override the default calling convention derived from the target triple.

Fixes https://bugs.llvm.org//show_bug.cgi?id=34530.

Differential Revision: https://reviews.llvm.org/D38299

llvm-svn: 316708

7 years agoMove bit operations to a new file, ELF/Bits.h.
Rui Ueyama [Thu, 26 Oct 2017 21:37:17 +0000 (21:37 +0000)]
Move bit operations to a new file, ELF/Bits.h.

llvm-svn: 316707

7 years agoSupport/reg*: Roll some non-modular headers into their singular uses
David Blaikie [Thu, 26 Oct 2017 21:32:58 +0000 (21:32 +0000)]
Support/reg*: Roll some non-modular headers into their singular uses

These headers have static variables in them, which would easily create
ODR violations if the header was included in another header, and the
constants were used by an inline function, for example.

llvm-svn: 316706

7 years ago[X86][Driver] Move all of the X86 feature flags to one spot in the Options.td file...
Craig Topper [Thu, 26 Oct 2017 21:28:33 +0000 (21:28 +0000)]
[X86][Driver] Move all of the X86 feature flags to one spot in the Options.td file and pair them up with their negations.

It looks like at one time Options.td was in alphabetical order, but that looks to have long been broken. The result is that it all the no- x86 options got separated from their other friends for no good reason.

This patch puts them all together in one place with the no- paired with its none negated version.

I've kept all the SSE and AVX/AVX512 bits together since they represent a somewhat linear progression of features. The rest I just put in alphabetical order after.

Differential Revision: https://reviews.llvm.org/D39341

llvm-svn: 316705

7 years ago[CGBlocks] Improve line info in backtraces containing *_helper_block
Vedant Kumar [Thu, 26 Oct 2017 21:27:24 +0000 (21:27 +0000)]
[CGBlocks] Improve line info in backtraces containing *_helper_block

Instead of only setting a non-zero debug location on the return
instruction in *_helper_block functions, set a proper location on all
instructions within these functions. Pick the start location of the
block literal expr for maximum clarity.

The debugger does not step into *_helper_block functions during normal
single-stepping because we mark their parameters as artificial. This is
what we want (the functions are implicitly generated and uninteresting
to most users). The stepping behavior is unchanged by this patch.

rdar://32907581

Differential Revision: https://reviews.llvm.org/D39310

llvm-svn: 316704

7 years agoDo not add discriminator encoding for debug intrinsics.
Dehao Chen [Thu, 26 Oct 2017 21:20:52 +0000 (21:20 +0000)]
Do not add discriminator encoding for debug intrinsics.

Summary: There are certain requirements for debug location of debug intrinsics, e.g. the scope of the DILocalVariable should be the same as the scope of its debug location. As a result, we should not add discriminator encoding for debug intrinsics.

Reviewers: dblaikie, aprantl

Reviewed By: aprantl

Subscribers: JDevlieghere, aprantl, bjope, sanjoy, llvm-commits

Differential Revision: https://reviews.llvm.org/D39343

llvm-svn: 316703

7 years ago[X86] Improve handling of UDIVREM8_ZEXT_HREG/SDIVREM8_SEXT_HREG to support 64-bit...
Craig Topper [Thu, 26 Oct 2017 21:12:03 +0000 (21:12 +0000)]
[X86] Improve handling of UDIVREM8_ZEXT_HREG/SDIVREM8_SEXT_HREG to support 64-bit extensions.

If the extend type is 64-bits, emit a 32-bit -> 64-bit extend after the UDIVREM8_ZEXT_HREG/UDIVREM8_SEXT_HREG operation.

This gives a shorter encoding for the second extend in the sext case, and allows us to completely remove the second extend in the zext case.

This also adds known bit and num sign bits support for UDIVREM8_ZEXT_HREG/SDIVREM8_SEXT_HREG.

Differential Revision: https://reviews.llvm.org/D38275

llvm-svn: 316702

7 years ago[www] Regenerate diagnostics reference.
Richard Smith [Thu, 26 Oct 2017 21:06:52 +0000 (21:06 +0000)]
[www] Regenerate diagnostics reference.

llvm-svn: 316701

7 years ago[X86] Teach the assembly parser to warn on duplicate registers in gather instructions.
Craig Topper [Thu, 26 Oct 2017 21:03:54 +0000 (21:03 +0000)]
[X86] Teach the assembly parser to warn on duplicate registers in gather instructions.

Fixes PR32238.

Differential Revision: https://reviews.llvm.org/D39077

llvm-svn: 316700

7 years ago[LICM] Restructure implicit exit handling to be more clear [NFCI]
Philip Reames [Thu, 26 Oct 2017 21:00:15 +0000 (21:00 +0000)]
[LICM] Restructure implicit exit handling to be more clear [NFCI]

When going to explain this to someone else, I got tripped up by the complicated meaning of IsKnownNonEscapingObject in load-store promotion.  Extract a helper routine and clarify naming/scopes to make this a bit more obvious.

llvm-svn: 316699

7 years ago[LSan] Enable LSan tests on PPC64 Linux.
Alex Shlyapnikov [Thu, 26 Oct 2017 20:59:04 +0000 (20:59 +0000)]
[LSan] Enable LSan tests on PPC64 Linux.

Summary:
LSan is functional on PPC64 Linux now, let's enable all tests.

One test required ppc specific changes: use_registers.cc.

Reviewers: eugenis

Subscribers: mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D39316

llvm-svn: 316698

7 years ago[TableGen] Use Twine instead of std::string concatenation in two calls to PrintFatalE...
Craig Topper [Thu, 26 Oct 2017 20:49:36 +0000 (20:49 +0000)]
[TableGen] Use Twine instead of std::string concatenation in two calls to PrintFatalError.

llvm-svn: 316697

7 years agoSupport/reg*.h: Make headers include their dependencies
David Blaikie [Thu, 26 Oct 2017 20:23:11 +0000 (20:23 +0000)]
Support/reg*.h: Make headers include their dependencies

llvm-svn: 316696

7 years agoFix C++ testcase I forgot to add to r316689.
Adrian Prantl [Thu, 26 Oct 2017 20:16:03 +0000 (20:16 +0000)]
Fix C++ testcase I forgot to add to r316689.

llvm-svn: 316695

7 years ago[GISel]: Missed checking if it's okay to create a G_CONSTANT of DstTy in the legaliza...
Aditya Nandakumar [Thu, 26 Oct 2017 20:13:54 +0000 (20:13 +0000)]
[GISel]: Missed checking if it's okay to create a G_CONSTANT of DstTy in the legalizationCombiner

llvm-svn: 316694

7 years ago[MinGW] Ignore the --enable-auto-import flag
Martin Storsjo [Thu, 26 Oct 2017 20:12:01 +0000 (20:12 +0000)]
[MinGW] Ignore the --enable-auto-import flag

In GNU ld, this option is enabled by default, but can be set
to reduce some warnings.

For lld, ignore the flag (for now); in case linking still succeeds
everything should be fine, if not, it should be clear to the user
what part failed (possibly requiring adjusting the user project
to not rely on this feature), instead of straight out failing due to
an unknown flag.

Differential Revision: https://reviews.llvm.org/D39330

llvm-svn: 316693

7 years ago[MinGW] Support --out-implib=name in addition to "--out-implib name"
Martin Storsjo [Thu, 26 Oct 2017 20:11:58 +0000 (20:11 +0000)]
[MinGW] Support --out-implib=name in addition to "--out-implib name"

Differential Revision: https://reviews.llvm.org/D39329

llvm-svn: 316692

7 years ago[COFF] Add a test for def files with spaces between @ and ordinal
Martin Storsjo [Thu, 26 Oct 2017 20:11:54 +0000 (20:11 +0000)]
[COFF] Add a test for def files with spaces between @ and ordinal

Differential Revision: https://reviews.llvm.org/D39328

llvm-svn: 316691

7 years ago[COFF] Support ordinals in def files with space between @ and the number
Martin Storsjo [Thu, 26 Oct 2017 20:11:32 +0000 (20:11 +0000)]
[COFF] Support ordinals in def files with space between @ and the number

Both GNU ld and MS link.exe support declaring ordinals this way.

A test will be added in lld.

Differential Revision: https://reviews.llvm.org/D39327

llvm-svn: 316690

7 years agoSimplify codegen and debug info generation for block context parameters.
Adrian Prantl [Thu, 26 Oct 2017 20:08:52 +0000 (20:08 +0000)]
Simplify codegen and debug info generation for block context parameters.

The exisiting code goes out of its way to put block parameters into an
alloca only at -O0, and then describes the funciton argument with a
dbg.declare, which is undocumented in the LLVM-CFE contract and does
not actually behave as intended after LLVM r642022.

This patch just generates the alloca unconditionally, the mem2reg pass
will eliminate it at -O1 and up anyway and points the dbg.declare to
the alloca as intended (which mem2reg will then correctly rewrite into
a dbg.value).

This reapplies r316684 with some dead code removed.

rdar://problem/35043980

Differential Revision: https://reviews.llvm.org/D39305

llvm-svn: 316689

7 years agoFix TestMinidump for r316673
Pavel Labath [Thu, 26 Oct 2017 19:08:34 +0000 (19:08 +0000)]
Fix TestMinidump for r316673

The test was asserting that we can only find one frame in the minidump.
Now that we have the default unwind plan from the ABI plugin, we are
able to find 5 more frames using the frame pointer chaining. Correct the
expectation in the test.

llvm-svn: 316688

7 years ago[Analyzer] [Tests] Write analyzers crashes to stdout, and not to a separate file
George Karpenkov [Thu, 26 Oct 2017 19:00:22 +0000 (19:00 +0000)]
[Analyzer] [Tests] Write analyzers crashes to stdout, and not to a separate file

With this change it would be sufficient to look at CI console to see the
failure.

llvm-svn: 316687

7 years agoRevert "Simplify codegen and debug info generation for block context parameters."
Adrian Prantl [Thu, 26 Oct 2017 18:32:16 +0000 (18:32 +0000)]
Revert "Simplify codegen and debug info generation for block context parameters."

This reverts commit r316684 while investigating buildbot breakage.

llvm-svn: 316686

7 years ago[x86] use an insert op to put one variable element into a constant of vectors
Sanjay Patel [Thu, 26 Oct 2017 18:27:55 +0000 (18:27 +0000)]
[x86] use an insert op to put one variable element into a constant of vectors

Instead of loading (a potential ton of) scalar constants, load those as a vector and then insert into it.

Differential Revision: https://reviews.llvm.org/D38756

llvm-svn: 316685

7 years agoSimplify codegen and debug info generation for block context parameters.
Adrian Prantl [Thu, 26 Oct 2017 18:16:05 +0000 (18:16 +0000)]
Simplify codegen and debug info generation for block context parameters.

The exisiting code goes out of its way to put block parameters into an
alloca only at -O0, and then describes the funciton argument with a
dbg.declare, which is undocumented in the LLVM-CFE contract and does
not actually behave as intended after LLVM r642022.

This patch just generates the alloca unconditionally, the mem2reg pass
will eliminate it at -O1 and up anyway and points the dbg.declare to
the alloca as intended (which mem2reg will then correctly rewrite into
a dbg.value).

rdar://problem/35043980

Differential Revision: https://reviews.llvm.org/D39305

llvm-svn: 316684

7 years ago[Sanitizers] Set default allocator_release_to_os_interval_ms to 5 seconds
Alex Shlyapnikov [Thu, 26 Oct 2017 17:59:24 +0000 (17:59 +0000)]
[Sanitizers] Set default allocator_release_to_os_interval_ms to 5 seconds

Summary:
With new release to OS approach (see D38245) it's reasonable to enable
it by default. Setting allocator_release_to_os_interval_ms to 5000 seems
to be a reasonable default (might be tuned later, based on the
feedback).

Also delaying the first release to OS in each bucket for at least
allocator_release_to_os_interval_ms after the first allocation to
prevent just allocated memory to be madvised back to OS and let short
lived processes to avoid release to OS overhead altogether.

Reviewers: cryptoad

Subscribers: kubamracek, llvm-commits, mehdi_amini

Differential Revision: https://reviews.llvm.org/D39318

llvm-svn: 316683