lldb.git
3 years agoFix header mismatch in DIBuilder Type APIs
Harlan Haskins [Mon, 2 Apr 2018 19:11:44 +0000 (19:11 +0000)]
Fix header mismatch in DIBuilder Type APIs

Some of the headers changed slightly, and the accompanying
implementation didn't change. This caused a silent failure.

llvm-svn: 329003

3 years ago[llvm-pdbutil] Add an export subcommand.
Zachary Turner [Mon, 2 Apr 2018 18:35:21 +0000 (18:35 +0000)]
[llvm-pdbutil] Add an export subcommand.

This command can dump the binary contents of a stream to a file.
This is useful when you want to do side-by-side comparisons of
a specific stream from two PDBs to examine the differences between
them.  You can export both of them to a file, then open them up
side by side in a hex editor (for example), so as to eliminate any
differences that might arise from the contents being on different
blocks in the PDB.

In subsequent patches I plan to improve the "explain" subcommand
so that you can explain the contents of a binary file that isn't
necessarily a full PDB, but one of these dumped streams, by telling
the subcommand how to interpret the contents.

llvm-svn: 329002

3 years agoTemporarily revert r328404:
Eric Christopher [Mon, 2 Apr 2018 18:33:47 +0000 (18:33 +0000)]
Temporarily revert r328404:

commit 519b97132a4c960e8dedbfe4290d86970d92e995
Author: Richard Trieu <rtrieu@google.com>
Date:   Sat Mar 24 00:52:44 2018 +0000

    [ODRHash] Support pointer and reference types.

    git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@328404 91177308-0d34-0410-b5e6-96231b3b80d8

As it's breaking some tests. I've communicated with Richard offline about testcases.

llvm-svn: 329001

3 years agoAdd -fclang-abi-compat=6 flag for upcoming ABI changes.
Richard Smith [Mon, 2 Apr 2018 18:29:44 +0000 (18:29 +0000)]
Add -fclang-abi-compat=6 flag for upcoming ABI changes.

llvm-svn: 329000

3 years agoAdd helper to determine if a field is a zero-length bitfield.
Richard Smith [Mon, 2 Apr 2018 18:29:43 +0000 (18:29 +0000)]
Add helper to determine if a field is a zero-length bitfield.

llvm-svn: 328999

3 years agoRemove unused PACKAGE_TARNAME; looks like a remnant of the old autoconf build.
Nico Weber [Mon, 2 Apr 2018 18:13:05 +0000 (18:13 +0000)]
Remove unused PACKAGE_TARNAME; looks like a remnant of the old autoconf build.

llvm-svn: 328998

3 years agoRevert r328932 as it caused Windows and MacOS bot failures.
Mike Edwards [Mon, 2 Apr 2018 18:02:36 +0000 (18:02 +0000)]
Revert r328932 as it caused Windows and MacOS bot failures.

http://green.lab.llvm.org/green/job/clang-stage1-configure-RA/43991/

llvm-svn: 328997

3 years agoRemove some unused cmake standard library includes.
Nico Weber [Mon, 2 Apr 2018 17:52:19 +0000 (17:52 +0000)]
Remove some unused cmake standard library includes.

llvm-svn: 328996

3 years agoRemove more feature test macros that became unused after r328989.
Nico Weber [Mon, 2 Apr 2018 17:45:47 +0000 (17:45 +0000)]
Remove more feature test macros that became unused after r328989.

llvm-svn: 328995

3 years ago[CUDA] Let device-side shared variables be initialized with undef
Yaxun Liu [Mon, 2 Apr 2018 17:38:24 +0000 (17:38 +0000)]
[CUDA] Let device-side shared variables be initialized with undef

CUDA shared variable should be initialized with undef.

Patch by Greg Rodgers.
Revised and lit test added by Yaxun Liu.

Differential Revision: https://reviews.llvm.org/D44985

llvm-svn: 328994

3 years ago[coroutines] Add __builtin_coro_noop => llvm.coro.noop
Gor Nishanov [Mon, 2 Apr 2018 17:35:37 +0000 (17:35 +0000)]
[coroutines] Add __builtin_coro_noop => llvm.coro.noop

A recent addition to Coroutines TS (https://wg21.link/p0913) adds a pre-defined
coroutine noop_coroutine that does nothing. To implement this feature, we implemented
an llvm.coro.noop intrinsic that returns a coroutine handle to a coroutine that
does nothing when resumed or destroyed.

This patch adds a builtin __builtin_coro_noop() that maps to llvm.coro.noop intrinsic.

Related llvm change: https://reviews.llvm.org/D45114

llvm-svn: 328993

3 years agoRemove HAVE_LIBPSAPI, HAVE_SHELL32.
Nico Weber [Mon, 2 Apr 2018 17:32:48 +0000 (17:32 +0000)]
Remove HAVE_LIBPSAPI, HAVE_SHELL32.

These used to be set in the old autoconf build, but the cmake build has had a
"TODO: actually check for these" comment since it was checked in, and they
were set to 1 on mingw unconditionally.  It seems safe to say that they always
exist under mingw, so just remove them and assume they're set exactly when on
mingw (with msvc, we use `pragma comment` instead of linking these via flags).

llvm-svn: 328992

3 years ago[DeadArgumentElim] Clone function level metadatas
Rong Xu [Mon, 2 Apr 2018 17:27:38 +0000 (17:27 +0000)]
[DeadArgumentElim] Clone function level metadatas

Some Function level metadatas, such as function entry count, are not cloned in
DeadArgumentElim. This happens a lot in lto/thinlto because of DeadArgumentElim
after internalization.

This patch clones the metadatas in the original function to the new function.

Differential Revision: https://reviews.llvm.org/D44127

llvm-svn: 328991

3 years agoAdded a BSD archive tool.
Greg Clayton [Mon, 2 Apr 2018 17:20:21 +0000 (17:20 +0000)]
Added a BSD archive tool.

This is a combination stand alone BSD archive tool that can dump BSD archives:

% bsd.py /path/to/foo.a

Search archives for an object file:

% bsd.py --object foo.o bar.a

Dump the symbol definitions found in the __.SYMDEF objects:

% bsd.py --symdef bar.a

Find symbols by name that are listed in the __.SYMDEF objects:

% bsd.py --symbol _Z123 bar.a

Extract objects from BSD archives:

% bsd.py --object foo.o bar.a --extract
% bsd.py --object foo.o bar.a --extract --outfile /tmp/foo.o
% bsd.py --object foo.o bar.a --extract --mtime 0x1234556

It also has installs a new LLDB command line command when imported into LLDB:

(lldb) command script import ~/Dropbox/bin/bsd.py
The "verify-debug-map-objects" command has been installed, type "help verify-debug-map-objects" for detailed help.
(lldb) verify-debug-map-objects a.out

This will iterate through all object files and verify the modification times match for any .o files, it will verify any .o files from BSD archives are found and have matching modification times and print out errors if any are found.

llvm-svn: 328990

3 years agoRemove HAVE_DIRENT_H.
Nico Weber [Mon, 2 Apr 2018 17:17:29 +0000 (17:17 +0000)]
Remove HAVE_DIRENT_H.

The autoconf manual: "This macro is obsolescent, as all current systems with
directory libraries have <dirent.h>. New programs need not use this macro."

llvm-svn: 328989

3 years ago[AMDGPU][MC][GFX9] Added instructions v_cvt_norm_*16_f16, v_sat_pk_u8_i16
Dmitry Preobrazhensky [Mon, 2 Apr 2018 17:09:20 +0000 (17:09 +0000)]
[AMDGPU][MC][GFX9] Added instructions v_cvt_norm_*16_f16, v_sat_pk_u8_i16

See bug 36847: https://bugs.llvm.org/show_bug.cgi?id=36847

Differential Revision: https://reviews.llvm.org/D45097

Reviewers: artem.tamazov, arsenm, timcorringham
llvm-svn: 328988

3 years ago[profile] Fix value profile runtime merging issues
Rong Xu [Mon, 2 Apr 2018 16:57:00 +0000 (16:57 +0000)]
[profile] Fix value profile runtime merging issues

This patch fixes the following issues:
(1) The strong definition of the merge hook function was not working which
breaks the online value profile merging. This patch removes the weak
attribute of VPMergeHook and assigns the value dynamically.
(2) Truncate the proifle file so that we don't have garbage data at the end of
the file.
(3) Add new __llvm_profile_instrument_target_value() interface to do the value
profile update in batch. This is needed as the original incremental by 1
in __llvm_profile_instrument_target() is too slow for online merge.

Differential Revision: https://reviews.llvm.org/D44847

llvm-svn: 328987

3 years ago[coroutines] Add support for llvm.coro.noop intrinsics
Gor Nishanov [Mon, 2 Apr 2018 16:55:12 +0000 (16:55 +0000)]
[coroutines] Add support for llvm.coro.noop intrinsics

Summary:
A recent addition to Coroutines TS (https://wg21.link/p0913) adds a pre-defined coroutine noop_coroutine that does nothing.
To implement this feature, we implemented an llvm.coro.noop intrinsic that returns a coroutine handle to a coroutine that does nothing when resumed or destroyed.

Reviewers: EricWF, modocache, rnk, lewissbaker

Reviewed By: modocache

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D45114

llvm-svn: 328986

3 years ago[Core] Grab-bag of improvements for Scalar.
Davide Italiano [Mon, 2 Apr 2018 16:50:54 +0000 (16:50 +0000)]
[Core] Grab-bag of improvements for Scalar.

Remove Scalar::Cast.

It was noted on the list that this method is unused. So, this patch
removes it.

Fix Scalar::Promote for most integer types

This fixes promotion of most integer types (128- and 256-bit types are
handled in a subsequent patch) to floating-point types. Previously
promotion was done bitwise, where value preservation is correct.

Fix Scalar::Promote for 128- and 256-bit integer types

This patch fixes the behavior of Scalar::Promote when trying to
perform a binary operation involving a 128- or 256-bit integer type
and a floating-point type. Now, the integer is cast to the floating
point type for the operation.

Patch by Tom Tromey!

Differential Revision:  https://reviews.llvm.org/D44907

llvm-svn: 328985

3 years agoSupport template template parameters
Frederic Riss [Mon, 2 Apr 2018 16:18:32 +0000 (16:18 +0000)]
Support template template parameters

Summary:
We would fail to resolve (and thus display the value of) any
templated type which contained a template template argument even
though we don't really use template arguments.

This patch adds minimal support for template template arguments,
but I doubt we need any more than that.

Reviewers: clayborg, jingham

Subscribers: JDevlieghere, lldb-commits

Differential Revision: https://reviews.llvm.org/D44613

llvm-svn: 328984

3 years ago[AMDGPU][MC][GFX9] Added s_atomic_* and s_buffer_atomic_* instructions
Dmitry Preobrazhensky [Mon, 2 Apr 2018 16:10:25 +0000 (16:10 +0000)]
[AMDGPU][MC][GFX9] Added s_atomic_* and s_buffer_atomic_* instructions

Fixed a bug which caused Tablegen crash.

See bug 36837: https://bugs.llvm.org/show_bug.cgi?id=36837

Differential Revision: https://reviews.llvm.org/D45085

Reviewers: artem.tamazov, arsenm, timcorringham
llvm-svn: 328983

3 years ago[PPC] Add a test for toc-relative access on ppc64le.
Sean Fertile [Mon, 2 Apr 2018 15:42:07 +0000 (15:42 +0000)]
[PPC] Add a test for toc-relative access on ppc64le.

Adds a simple test for accessing a local global variable in the ElfV2 abi.
Checks that the toc base used is the expected offset from the .TOC. symbol,
and that the offsets for the global are calculated relative to the toc base.

llvm-svn: 328982

3 years ago[Hexagon] Clean up some code in HexagonAsmPrinter, NFC
Krzysztof Parzyszek [Mon, 2 Apr 2018 15:06:55 +0000 (15:06 +0000)]
[Hexagon] Clean up some code in HexagonAsmPrinter, NFC

llvm-svn: 328981

3 years ago[SLP] Fix PR36481: vectorize reassociated instructions.
Alexey Bataev [Mon, 2 Apr 2018 14:51:37 +0000 (14:51 +0000)]
[SLP] Fix PR36481: vectorize reassociated instructions.

Summary:
If the load/extractelement/extractvalue instructions are not originally
consecutive, the SLP vectorizer is unable to vectorize them. Patch
allows reordering of such instructions.

Reviewers: RKSimon, spatel, hfinkel, mkuper, Ayal, ashahid

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D43776

llvm-svn: 328980

3 years agoRemove stro(u?)ll() config checks. Those were needed pre-MSVC2013, but we require...
Nico Weber [Mon, 2 Apr 2018 14:36:34 +0000 (14:36 +0000)]
Remove stro(u?)ll() config checks. Those were needed pre-MSVC2013, but we require 2015 nowadays.

llvm-svn: 328979

3 years agoRevert r328975, it makes TableGen assert on the bots.
Nico Weber [Mon, 2 Apr 2018 14:20:23 +0000 (14:20 +0000)]
Revert r328975, it makes TableGen assert on the bots.

llvm-svn: 328978

3 years agoRemove HAVE_WRITEV that's unused after r255837.
Nico Weber [Mon, 2 Apr 2018 14:18:13 +0000 (14:18 +0000)]
Remove HAVE_WRITEV that's unused after r255837.

llvm-svn: 328977

3 years agoMore fixes after r328970.
Nico Weber [Mon, 2 Apr 2018 13:55:56 +0000 (13:55 +0000)]
More fixes after r328970.

llvm-svn: 328976

3 years ago[AMDGPU][MC][GFX9] Added s_atomic_* and s_buffer_atomic_* instructions
Dmitry Preobrazhensky [Mon, 2 Apr 2018 13:52:23 +0000 (13:52 +0000)]
[AMDGPU][MC][GFX9] Added s_atomic_* and s_buffer_atomic_* instructions

See bug 36837: https://bugs.llvm.org/show_bug.cgi?id=36837

Differential Revision: https://reviews.llvm.org/D45085

Reviewers: artem.tamazov, arsenm, timcorringham
llvm-svn: 328975

3 years agoAttempt to heal bots after r328970.
Nico Weber [Mon, 2 Apr 2018 13:49:35 +0000 (13:49 +0000)]
Attempt to heal bots after r328970.

llvm-svn: 328974

3 years ago[X86] Reduce Store Forward Block issues in HW - Recommit after fixing Bug 36346
Lama Saba [Mon, 2 Apr 2018 13:48:28 +0000 (13:48 +0000)]
[X86] Reduce Store Forward Block issues in HW - Recommit after fixing Bug 36346

If a load follows a store and reloads data that the store has written to memory, Intel microarchitectures can in many cases forward the data directly from the store to the load, This "store forwarding" saves cycles by enabling the load to directly obtain the data instead of accessing the data from cache or memory.
A "store forward block" occurs in cases that a store cannot be forwarded to the load. The most typical case of store forward block on Intel Core microarchiticutre that a small store cannot be forwarded to a large load.
The estimated penalty for a store forward block is ~13 cycles.

This pass tries to recognize and handle cases where "store forward block" is created by the compiler when lowering memcpy calls to a sequence
of a load and a store.

The pass currently only handles cases where memcpy is lowered to XMM/YMM registers, it tries to break the memcpy into smaller copies.
breaking the memcpy should be possible since there is no atomicity guarantee for loads and stores to XMM/YMM.

Differential revision: https://reviews.llvm.org/D41330

Change-Id: Ib48836ccdf6005989f7d4466fa2035b7b04415d9
llvm-svn: 328973

3 years ago[llvm-mca] Do not assume that implicit reads cannot be associated with ReadAdvance...
Andrea Di Biagio [Mon, 2 Apr 2018 13:46:49 +0000 (13:46 +0000)]
[llvm-mca] Do not assume that implicit reads cannot be associated with ReadAdvance entries.

Before, the instruction builder incorrectly assumed that only explicit reads
could have been associated with ReadAdvance entries.
This patch fixes the issue and adds a test to verify it.

llvm-svn: 328972

3 years agoAttempt to fix papertrail-warnings.test on Windows bots.
Nico Weber [Mon, 2 Apr 2018 13:45:39 +0000 (13:45 +0000)]
Attempt to fix papertrail-warnings.test on Windows bots.

llvm-svn: 328971

3 years agoAssume existence of inttypes.h and stdint.h in DataTypes.h.
Nico Weber [Mon, 2 Apr 2018 13:22:26 +0000 (13:22 +0000)]
Assume existence of inttypes.h and stdint.h in DataTypes.h.

These should exist in all toolchains LLVM supports nowadays.

Enables making DataTypes.h a regular header instead of a .h.cmake file and
allows deleting a bunch of cmake goop (which should also speed up cmake
configure time a bit).

All the code this removes is 9+ years old.
https://reviews.llvm.org/D45155

llvm-svn: 328970

3 years ago[PowerPC] fix assertion failure due to missing instruction in P9InstrResources.td
Hiroshi Inoue [Mon, 2 Apr 2018 12:18:21 +0000 (12:18 +0000)]
[PowerPC] fix assertion failure due to missing instruction in P9InstrResources.td

This patch adds L(D|W|H|B)XTLS instructions introduced by https://reviews.llvm.org/rL327635 in P9InstrResources.td.

llvm-svn: 328969

3 years agoFix unused variable warning introduced at revision 328910.
Andrea Di Biagio [Mon, 2 Apr 2018 12:04:37 +0000 (12:04 +0000)]
Fix unused variable warning introduced at revision 328910.

llvm-svn: 328968

3 years ago[ELF] - cref.s: check that we print symbols from archives. NFCI.
George Rimar [Mon, 2 Apr 2018 11:28:44 +0000 (11:28 +0000)]
[ELF] - cref.s: check that we print symbols from archives. NFCI.

This is consistent with bfd and we already supported it,
though test did not contain the explicit check.

llvm-svn: 328967

3 years ago[test] Exit lldb-dotest in a more Pythonic way.
Jonas Devlieghere [Mon, 2 Apr 2018 10:44:36 +0000 (10:44 +0000)]
[test] Exit lldb-dotest in a more Pythonic way.

As suggested by Keith Smiley in:
https://github.com/apple/swift-lldb/pull/486

llvm-svn: 328966

3 years ago[dsymutil] Upstream emitting of papertrail warnings.
Jonas Devlieghere [Mon, 2 Apr 2018 10:40:43 +0000 (10:40 +0000)]
[dsymutil] Upstream emitting of papertrail warnings.

When running dsymutil as part of your build system, it can be desirable
for warnings to be part of the end product, rather than just being
emitted to the output stream. This patch upstreams that functionality.

Differential revision: https://reviews.llvm.org/D44639

llvm-svn: 328965

3 years agoWdocumentation fix. NFCI.
Simon Pilgrim [Mon, 2 Apr 2018 10:34:39 +0000 (10:34 +0000)]
Wdocumentation fix. NFCI.

llvm-svn: 328964

3 years agoWdocumentation fixes. NFCI.
Simon Pilgrim [Mon, 2 Apr 2018 10:21:51 +0000 (10:21 +0000)]
Wdocumentation fixes. NFCI.

llvm-svn: 328963

3 years ago[X86][Silvermont] Use correct latency and throughput information for divide and squar...
Craig Topper [Mon, 2 Apr 2018 06:34:16 +0000 (06:34 +0000)]
[X86][Silvermont] Use correct latency and throughput information for divide and square root in the scheduler model.

Data taken from Table 16-17 in the Intel Optimization Manual.

llvm-svn: 328962

3 years ago[X86][SkylakeServer] Correct throughput for 512-bit sqrt and divide.
Craig Topper [Mon, 2 Apr 2018 05:54:34 +0000 (05:54 +0000)]
[X86][SkylakeServer] Correct throughput for 512-bit sqrt and divide.

Data taken from the AVX512_SKX_PortAssign spreadsheet at http://instlatx64.atw.hu/

llvm-svn: 328961

3 years ago[X86] Correct the throughput for divide instructions in Sandy Bridge/Haswell/Broadwel...
Craig Topper [Mon, 2 Apr 2018 05:33:28 +0000 (05:33 +0000)]
[X86] Correct the throughput for divide instructions in Sandy Bridge/Haswell/Broadwell/Skylake scheduler models.

Fixes most of PR36898. Still need to fix the 512-bit instructions, but Agner's tables don't have those.

llvm-svn: 328960

3 years ago[X86] Fix the SchedRW for AVX512 shift instructions.
Craig Topper [Mon, 2 Apr 2018 03:15:02 +0000 (03:15 +0000)]
[X86] Fix the SchedRW for AVX512 shift instructions.

It was being inadvertently defaulted to an FADD scheduler class.

llvm-svn: 328959

3 years ago[X86] Give the AVX512 VEXTRACT instructions the same SchedRWs as the SSE/AVX versions.
Craig Topper [Mon, 2 Apr 2018 02:44:55 +0000 (02:44 +0000)]
[X86] Give the AVX512 VEXTRACT instructions the same SchedRWs as the SSE/AVX versions.

llvm-svn: 328958

3 years agoRemove a few unreferenced config.h defines.
Nico Weber [Mon, 2 Apr 2018 01:46:08 +0000 (01:46 +0000)]
Remove a few unreferenced config.h defines.

Found by looking through the output of

  for f in $(grep -o '\bHAVE_[A-Z0-9_]*\b' llvm/cmake/config-ix.cmake); do
    echo $f $(git grep $f '*' | wc -l);
  done

in the monorepo.

llvm-svn: 328957

3 years ago[X86] Add an itinerary to BTR64rr.
Craig Topper [Mon, 2 Apr 2018 01:12:34 +0000 (01:12 +0000)]
[X86] Add an itinerary to BTR64rr.

llvm-svn: 328956

3 years ago[X86] Make sure all the classes declare in the Haswell scheduler model are prefixed...
Craig Topper [Mon, 2 Apr 2018 01:12:32 +0000 (01:12 +0000)]
[X86] Make sure all the classes declare in the Haswell scheduler model are prefixed with HW.

The tablegen files all share a namespace so we shouldn't use a generic names in a specific scheduler model.

llvm-svn: 328955

3 years ago[X86] Give VINSERTPS the same intinerary as INSERTPS.
Craig Topper [Mon, 2 Apr 2018 00:48:11 +0000 (00:48 +0000)]
[X86] Give VINSERTPS the same intinerary as INSERTPS.

llvm-svn: 328954

3 years agoAdd C API bindings for DIBuilder 'Type' APIs
Harlan Haskins [Mon, 2 Apr 2018 00:17:40 +0000 (00:17 +0000)]
Add C API bindings for DIBuilder 'Type' APIs

This patch adds a set of unstable C API bindings to the DIBuilder interface for
creating structure, function, and aggregate types.

This patch also removes the existing implementations of these functions from
the Go bindings and updates the Go API to fit the new C APIs.

llvm-svn: 328953

3 years ago[X86] Cleanup ADCX/ADOX instruction definitions.
Craig Topper [Sun, 1 Apr 2018 23:58:50 +0000 (23:58 +0000)]
[X86] Cleanup ADCX/ADOX instruction definitions.

Give them both the same itineraries. Add hasSideEffects = 0 to ADOX since they don't have patterns. Rename source operands to $src1 and $src2 instead of $src0 and $src. Add ReadAfterLd to the memory form SchedRW.

llvm-svn: 328952

3 years ago[Coroutines] Schedule coro-split before asan
Brian Gesiak [Sun, 1 Apr 2018 23:55:21 +0000 (23:55 +0000)]
[Coroutines] Schedule coro-split before asan

Summary:
The docs for the LLVM coroutines intrinsic `@llvm.coro.id` state that
"The second argument, if not null, designates a particular alloca instruction
to be a coroutine promise."

However, if the address sanitizer pass is run before the `@llvm.coro.id`
intrinsic is lowered, the `alloca` instruction passed to the intrinsic as its
second argument is converted, as per the
https://github.com/google/sanitizers/wiki/AddressSanitizerAlgorithm docs, to
an `inttoptr` instruction that accesses the address of the promise.

On optimization levels `-O1` and above, the `-asan` pass is run after
`-coro-early`, `-coro-split`, and `-coro-elide`, and before
`-coro-cleanup`, and so there is no issue. At `-O0`, however, `-asan`
is run in between `-coro-early` and `-coro-split`, which causes an
assertion to be hit when the `inttoptr` instruction is forcibly cast to
an `alloca`.

Rearrange the passes such that the coroutine passes are registered
before the sanitizer passes.

Test Plan:
Compile a simple C++ program that uses coroutines in `-O0` with
`-fsanitize-address`, and confirm no assertion is hit:
`clang++ coro-example.cpp -fcoroutines-ts -g -fsanitize=address -fno-omit-frame-pointer`.

Reviewers: GorNishanov, lewissbaker, EricWF

Reviewed By: GorNishanov

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D43927

llvm-svn: 328951

3 years ago[AArch64] Reserve x18 register on Fuchsia
Petr Hosek [Sun, 1 Apr 2018 23:44:04 +0000 (23:44 +0000)]
[AArch64] Reserve x18 register on Fuchsia

This register is reserved as a platform register on Fuchsia.

Differential Revision: https://reviews.llvm.org/D45105

llvm-svn: 328950

3 years ago[Coroutines] Find custom allocators in class scope
Brian Gesiak [Sun, 1 Apr 2018 22:59:22 +0000 (22:59 +0000)]
[Coroutines] Find custom allocators in class scope

Summary:
https://reviews.llvm.org/rL325291 implemented Coroutines TS N4723
section [dcl.fct.def.coroutine]/7, but it performed lookup of allocator
functions within both the global and class scope, whereas the specified
behavior is to perform lookup for custom allocators within just the
class scope.

To fix, add parameters to the `Sema::FindAllocationFunctions` function
such that it can be used to lookup allocators in global scope,
class scope, or both (instead of just being able to look up in just global
scope or in both global and class scope). Then, use those parameters
from within the coroutine Sema.

This incorrect behavior had the unfortunate side-effect of causing the
bug https://bugs.llvm.org/show_bug.cgi?id=36578 (or at least the reports
of that bug in C++ programs). That bug would occur for any C++ user with
a coroutine frame that took a single pointer argument, since it would
then find the global placement form `operator new`, described in the
C++ standard 18.6.1.3.1. This patch prevents Clang from generating code
that triggers the LLVM assert described in that bug report.

Test Plan: `check-clang`

Reviewers: GorNishanov, eric_niebler, lewissbaker

Reviewed By: GorNishanov

Subscribers: EricWF, cfe-commits

Differential Revision: https://reviews.llvm.org/D44552

llvm-svn: 328949

3 years ago[DebugCounter] Make -debug-counter cl::Hidden.
Craig Topper [Sun, 1 Apr 2018 22:16:52 +0000 (22:16 +0000)]
[DebugCounter] Make -debug-counter cl::Hidden.

llvm-svn: 328948

3 years ago[LegacyPassManager] Make 'print-module-scope' cl::Hidden like the rest of the printin...
Craig Topper [Sun, 1 Apr 2018 21:54:26 +0000 (21:54 +0000)]
[LegacyPassManager] Make 'print-module-scope' cl::Hidden like the rest of the printing options.

llvm-svn: 328947

3 years ago[X86] Give ADC8/16/32/64mi the same scheduling information as ADC8/16/32/64mr and...
Craig Topper [Sun, 1 Apr 2018 21:54:24 +0000 (21:54 +0000)]
[X86] Give ADC8/16/32/64mi the same scheduling information as ADC8/16/32/64mr and SBB8/16/32/64mi.

It doesn't make a lot of sense that it would be different.

llvm-svn: 328946

3 years ago[x86] Correct the operand structure of the ADOX instruction.
Chandler Carruth [Sun, 1 Apr 2018 21:53:18 +0000 (21:53 +0000)]
[x86] Correct the operand structure of the ADOX instruction.

This also moves to define it in the same way as ADCX which seems to use
constraints a bit better.

This is pulled out of the review for reducing the use of popf for
restoring EFLAGS, but is independent. There are still more problems with
our definitions for these instructions that Craig is going to look at
but this is at least less broken and he can start from this to improve
them more fully.

Thanks to Craig for the review here.

llvm-svn: 328945

3 years ago[x86] Expose more of the condition conversion routines in the public API
Chandler Carruth [Sun, 1 Apr 2018 21:47:55 +0000 (21:47 +0000)]
[x86] Expose more of the condition conversion routines in the public API
for X86's instruction information. I've now got a second patch under
review that needs these same APIs. This bit is nicely orthogonal and
obvious, so landing it. NFC.

llvm-svn: 328944

3 years ago[tools] Change std::sort to llvm::sort in response to r327219
Mandeep Singh Grang [Sun, 1 Apr 2018 21:24:53 +0000 (21:24 +0000)]
[tools] Change std::sort to llvm::sort in response to r327219

Summary:
r327219 added wrappers to std::sort which randomly shuffle the container before sorting.
This will help in uncovering non-determinism caused due to undefined sorting
order of objects having the same key.

To make use of that infrastructure we need to invoke llvm::sort instead of std::sort.

Note: This patch is one of a series of patches to replace *all* std::sort to llvm::sort.
Refer the comments section in D44363 for a list of all the required patches.

Reviewers: JDevlieghere, zturner, echristo, dberris, friss

Reviewed By: echristo

Subscribers: gbedwell, llvm-commits

Differential Revision: https://reviews.llvm.org/D45141

llvm-svn: 328943

3 years agoFix a major swiftcall ABI bug with trivial C++ class types.
John McCall [Sun, 1 Apr 2018 21:04:30 +0000 (21:04 +0000)]
Fix a major swiftcall ABI bug with trivial C++ class types.

The problem with the previous logic was that there might not be any
explicit copy/move constructor declarations, e.g. if the type is
trivial and we've never type-checked a copy of it.  Relying on Sema's
computation seems much more reliable.

Also, I believe Richard's recommendation is exactly the rule we use
now on the Itanium ABI, modulo the trivial_abi attribute (which this
change of course fixes our handling of in Swift).

This does mean that we have a less portable rule for deciding
indirectness for swiftcall.  I would prefer it if we just applied the
Itanium rule universally under swiftcall, but in the meantime, I need
to fix this bug.

This only arises when defining functions with class-type arguments
in C++, as we do in the Swift runtime.  It doesn't affect normal Swift
operation because we don't import code as C++.

llvm-svn: 328942

3 years ago[include] Change std::sort to llvm::sort in response to r327219
Mandeep Singh Grang [Sun, 1 Apr 2018 18:39:50 +0000 (18:39 +0000)]
[include] Change std::sort to llvm::sort in response to r327219

Summary:
r327219 added wrappers to std::sort which randomly shuffle the container before sorting.
This will help in uncovering non-determinism caused due to undefined sorting
order of objects having the same key.

To make use of that infrastructure we need to invoke llvm::sort instead of std::sort.

Note: This patch is one of a series of patches to replace *all* std::sort to llvm::sort.
Refer the comments section in D44363 for a list of all the required patches.

Reviewers: echristo, zturner, mzolotukhin, lhames

Reviewed By: echristo

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D45135

llvm-svn: 328940

3 years agoAMDGPU: Make isIntrinsicSourceOfDivergence table-driven
Nicolai Haehnle [Sun, 1 Apr 2018 17:09:14 +0000 (17:09 +0000)]
AMDGPU: Make isIntrinsicSourceOfDivergence table-driven

Summary:
This is in preparation for the new dimension-aware image intrinsics,
which I'd rather not have to list here by hand.

Change-Id: Iaa16e3a635a11283918ce0d9e1e618591b0bf6fa

Reviewers: arsenm, rampitec, b-sumner

Subscribers: kzhuravl, wdng, yaxunl, dstuttard, tpr, llvm-commits, t-tye

Differential Revision: https://reviews.llvm.org/D44938

llvm-svn: 328939

3 years agoAMDGPU: Make getTgtMemIntrinsic table-driven for resource-based intrinsics
Nicolai Haehnle [Sun, 1 Apr 2018 17:09:07 +0000 (17:09 +0000)]
AMDGPU: Make getTgtMemIntrinsic table-driven for resource-based intrinsics

Summary:
Avoids having to list all intrinsics manually.

This is in preparation for the new dimension-aware image intrinsics,
which I'd rather not have to list here by hand.

Change-Id: If7ced04998397ef68c4cb8f7de66b5050fb767e5

Reviewers: arsenm, rampitec, b-sumner

Subscribers: kzhuravl, wdng, mgorny, yaxunl, dstuttard, tpr, llvm-commits, t-tye

Differential Revision: https://reviews.llvm.org/D44937

llvm-svn: 328938

3 years agoTableGen: Support Intrinsic values in SearchableTable
Nicolai Haehnle [Sun, 1 Apr 2018 17:08:58 +0000 (17:08 +0000)]
TableGen: Support Intrinsic values in SearchableTable

Summary:
We will use this in the AMDGPU backend in a subsequent patch
in the stack to lookup target-specific per-intrinsic information.

The generic CodeGenIntrinsic machinery is used to ensure that,
even though we don't calculate actual enum values here, we do
get the intrinsics in the right order for the binary search
index.

Change-Id: If61cd5587963a4c5a1cc53df1e59c5e4dec1f9dc

Reviewers: arsenm, rampitec, b-sumner

Subscribers: wdng, tpr, llvm-commits

Differential Revision: https://reviews.llvm.org/D44935

llvm-svn: 328937

3 years agoTableGen: More helpful error messages
Nicolai Haehnle [Sun, 1 Apr 2018 17:08:49 +0000 (17:08 +0000)]
TableGen: More helpful error messages

Summary: Change-Id: I3c23f6f6597912423762780cd8c5315870412bbe

Reviewers: arsenm, rampitec, b-sumner

Subscribers: wdng, llvm-commits

Differential Revision: https://reviews.llvm.org/D44936

Change-Id: Ie62614a3e2d7774f46e4034478b28f57100a2c92
llvm-svn: 328936

3 years ago[DebugInfo] Change std::sort to llvm::sort in response to r327219
Mandeep Singh Grang [Sun, 1 Apr 2018 16:18:49 +0000 (16:18 +0000)]
[DebugInfo] Change std::sort to llvm::sort in response to r327219

Summary:
r327219 added wrappers to std::sort which randomly shuffle the container before sorting.
This will help in uncovering non-determinism caused due to undefined sorting
order of objects having the same key.

To make use of that infrastructure we need to invoke llvm::sort instead of std::sort.

Note: This patch is one of a series of patches to replace *all* std::sort to llvm::sort.
Refer the comments section in D44363 for a list of all the required patches.

Reviewers: echristo, zturner, samsonov

Reviewed By: echristo

Subscribers: JDevlieghere, llvm-commits

Differential Revision: https://reviews.llvm.org/D45134

llvm-svn: 328935

3 years ago[ThinLTO] Add an import cutoff for debugging/triaging
Teresa Johnson [Sun, 1 Apr 2018 15:54:40 +0000 (15:54 +0000)]
[ThinLTO] Add an import cutoff for debugging/triaging

Summary:
Adds -import-cutoff=N which will stop importing during the thin link
after N imports. Default is -1 (no  limit).

Reviewers: wmi

Subscribers: inglorion, llvm-commits

Differential Revision: https://reviews.llvm.org/D45127

llvm-svn: 328934

3 years ago[LoopRotate] Rotate loops with loop exiting latches
David Green [Sun, 1 Apr 2018 12:48:24 +0000 (12:48 +0000)]
[LoopRotate] Rotate loops with loop exiting latches

If a loop has a loop exiting latch, it can be profitable
to rotate the loop if it leads to the simplification of
a phi node. Perform rotation in these cases even if loop
rotate itself didnt simplify the loop to get there.

Differential Revision: https://reviews.llvm.org/D44199

llvm-svn: 328933

3 years ago[clang-tidy] Define __clang_analyzer__ macro for clang-tidy for compatibility with...
Zinovy Nis [Sun, 1 Apr 2018 11:51:57 +0000 (11:51 +0000)]
[clang-tidy] Define __clang_analyzer__ macro for clang-tidy for compatibility with clang static analyzer

This macro is widely used in many well-known projects, ex. Chromium.
But it's not set for clang-tidy, so for ex. DCHECK in Chromium is not considered as [[no-return]], and a lot of false-positive warnings about nullptr dereferenced are emitted.
This patch fixes the issue by explicitly added macro definition.

Differential Revision: https://reviews.llvm.org/D44906

llvm-svn: 328932

3 years ago[X86] Don't check for folding into a store when deciding if we can promote an i16...
Craig Topper [Sun, 1 Apr 2018 06:29:32 +0000 (06:29 +0000)]
[X86] Don't check for folding into a store when deciding if we can promote an i16 mul.

There's no RMW mul operation.

llvm-svn: 328931

3 years ago[X86] Check if the load and store are to the same pointer before preventing i16 RMW...
Craig Topper [Sun, 1 Apr 2018 06:29:28 +0000 (06:29 +0000)]
[X86] Check if the load and store are to the same pointer before preventing i16 RMW shifts and subtracts from being promoted.

llvm-svn: 328930

3 years ago[X86] Add test case to show failure to promote i16 subtract when the LHS is a load...
Craig Topper [Sun, 1 Apr 2018 06:29:27 +0000 (06:29 +0000)]
[X86] Add test case to show failure to promote i16 subtract when the LHS is a load and the result is stored to a different address.

We mistakenly believe we might be able to fold this as a RMW operation, but that doesn't end up happening.

llvm-svn: 328929

3 years ago[X86] Allow i16 subtracts to be promoted if the load is on the LHS and its not being...
Craig Topper [Sun, 1 Apr 2018 06:29:25 +0000 (06:29 +0000)]
[X86] Allow i16 subtracts to be promoted if the load is on the LHS and its not being stored.

llvm-svn: 328928

3 years ago[X86] Add test case to show failure to promote i16 subtract because we mistakenly...
Craig Topper [Sun, 1 Apr 2018 06:29:23 +0000 (06:29 +0000)]
[X86] Add test case to show failure to promote i16 subtract because we mistakenly believe the load can be folded. NFC

The left hand side of the subtract is a load, but we cna't fold those unless we also have a store.

llvm-svn: 328927

3 years ago[X86] Remove unneeded temporary variable. NFC
Craig Topper [Sun, 1 Apr 2018 06:29:21 +0000 (06:29 +0000)]
[X86] Remove unneeded temporary variable. NFC

This Promote flag was alwasys set to true except in the default case. But in the default case we don't need to set PVT and can just return false.

llvm-svn: 328926

3 years ago[Analysis] Change std::sort to llvm::sort in response to r327219
Mandeep Singh Grang [Sun, 1 Apr 2018 01:46:51 +0000 (01:46 +0000)]
[Analysis] Change std::sort to llvm::sort in response to r327219

Summary:
r327219 added wrappers to std::sort which randomly shuffle the container before sorting.
This will help in uncovering non-determinism caused due to undefined sorting
order of objects having the same key.

To make use of that infrastructure we need to invoke llvm::sort instead of std::sort.

Note: This patch is one of a series of patches to replace *all* std::sort to llvm::sort.
Refer D44363 for a list of all the required patches.

Reviewers: sanjoy, dexonsmith, hfinkel, RKSimon

Reviewed By: dexonsmith

Subscribers: david2050, llvm-commits

Differential Revision: https://reviews.llvm.org/D44944

llvm-svn: 328925

3 years agoAdd missing include to ContinuousRangeMap.h
Eric Fiselier [Sun, 1 Apr 2018 00:33:51 +0000 (00:33 +0000)]
Add missing include to ContinuousRangeMap.h

llvm-svn: 328924

3 years agoAdd missing include to Visibility.h
Eric Fiselier [Sun, 1 Apr 2018 00:31:14 +0000 (00:31 +0000)]
Add missing include to Visibility.h

llvm-svn: 328923

3 years agoRevert r328845, it caused crbug.com/827810.
Nico Weber [Sat, 31 Mar 2018 18:26:25 +0000 (18:26 +0000)]
Revert r328845, it caused crbug.com/827810.

llvm-svn: 328922

3 years ago[DAGCombine] (float)((int) f) --> ftrunc (PR36617)
Sanjay Patel [Sat, 31 Mar 2018 17:55:44 +0000 (17:55 +0000)]
[DAGCombine] (float)((int) f) --> ftrunc (PR36617)

fptosi / fptoui round towards zero, and that's the same behavior as ISD::FTRUNC,
so replace a pair of casts with the equivalent node. We don't have to account for
special cases (NaN, INF) because out-of-range casts are undefined.

Differential Revision: https://reviews.llvm.org/D44909

llvm-svn: 328921

3 years ago[llvm-rtdyld] Fix the InputFileList cl::opt description: it accepts multiple
Lang Hames [Sat, 31 Mar 2018 16:01:01 +0000 (16:01 +0000)]
[llvm-rtdyld] Fix the InputFileList cl::opt description: it accepts multiple
input files.

llvm-svn: 328920

3 years ago[analyzer] Unroll the loop when it has a unsigned counter.
Henry Wong [Sat, 31 Mar 2018 12:46:46 +0000 (12:46 +0000)]
[analyzer] Unroll the loop when it has a unsigned counter.

Summary:
The original implementation in the `LoopUnrolling.cpp` didn't consider the case where the counter is unsigned. This case is only handled in `simpleCondition()`, but this is not enough, we also need to deal with the unsinged counter with the counter initialization.

Since `IntegerLiteral` is `signed`, there is a `ImplicitCastExpr<IntegralCast>` in `unsigned counter = IntergerLiteral`. This patch add the `ignoringParenImpCasts()` in the `IntegerLiteral` matcher.

Reviewers: szepet, a.sidorin, NoQ, george.karpenkov

Reviewed By: szepet, george.karpenkov

Subscribers: xazax.hun, rnkovacs, cfe-commits, MTC

Differential Revision: https://reviews.llvm.org/D45086

llvm-svn: 328919

3 years ago[X86][Btver2] Add MMX_PSHUFB to the JWritePSHUFB InstRW entries
Simon Pilgrim [Sat, 31 Mar 2018 09:15:54 +0000 (09:15 +0000)]
[X86][Btver2] Add MMX_PSHUFB to the JWritePSHUFB InstRW entries

llvm-svn: 328918

3 years agoFix trailing whitespace. NFCI.
Simon Pilgrim [Sat, 31 Mar 2018 09:14:14 +0000 (09:14 +0000)]
Fix trailing whitespace. NFCI.

llvm-svn: 328917

3 years agoUnbreak the build of the go bindings after r328839.
Benjamin Kramer [Sat, 31 Mar 2018 07:41:25 +0000 (07:41 +0000)]
Unbreak the build of the go bindings after r328839.

llvm-svn: 328916

3 years ago[MIR-Canon] Adding support for local idempotent instruction hoisting.
Puyan Lotfi [Sat, 31 Mar 2018 05:48:51 +0000 (05:48 +0000)]
[MIR-Canon] Adding support for local idempotent instruction hoisting.

llvm-svn: 328915

3 years ago[X86] Add SchedRW for PMULLD
Craig Topper [Sat, 31 Mar 2018 04:54:32 +0000 (04:54 +0000)]
[X86] Add SchedRW for PMULLD

Summary:
It seems many CPUs don't implement this instruction as well as the other vector multiplies. Often using a multi uop flow. Silvermont in particular has a 7 uop flow with 11 cycle throughput. Sandy Bridge implements it as a single uop with 5 cycle latency and 1 cycle throughput. But Haswell and later use 2 uops with 10 cycle latency and 2 cycle throughput.

This patch adds a new X86SchedWritePair we can use to tag this instruction separately. I've provided correct information for Silvermont, Btver2, and Sandy Bridge. I've removed the InstRWs for SandyBridge. I've left Haswell/Broadwell/Skylake InstRWs in place because I wasn't sure how to account for the different load latency between 128 and 256 bits. I also left Znver1 InstRWs in place because the existing values don't match Agner's spreadsheet.

I also left a FIXME in the SandyBridge model because it being used for the "generic" model is too optimistic for the 256/512-bit versions since those are multiple uops on all known CPUs.

Reviewers: RKSimon, GGanesh, courbet

Reviewed By: RKSimon

Subscribers: gchatelet, gbedwell, andreadb, llvm-commits

Differential Revision: https://reviews.llvm.org/D44972

llvm-svn: 328914

3 years ago[analyzer] Hopefully fix the ARM buildbot.
George Karpenkov [Sat, 31 Mar 2018 02:17:15 +0000 (02:17 +0000)]
[analyzer] Hopefully fix the ARM buildbot.

llvm-svn: 328913

3 years ago[analyzer] Fix assertion crash in CStringChecker
George Karpenkov [Sat, 31 Mar 2018 01:20:08 +0000 (01:20 +0000)]
[analyzer] Fix assertion crash in CStringChecker

An offset might be unknown.

rdar://39054939

Differential Revision: https://reviews.llvm.org/D45115

llvm-svn: 328912

3 years ago[analyzer] Cache offset computation for MemRegion
George Karpenkov [Sat, 31 Mar 2018 01:20:07 +0000 (01:20 +0000)]
[analyzer] Cache offset computation for MemRegion

Achieves almost a 200% speedup on the example where the performance of
visitors was problematic.

Performance on sqlite3 is unaffected.

rdar://38818362

Differential Revision: https://reviews.llvm.org/D45113

llvm-svn: 328911

3 years ago[analyzer] Fix liveness calculation for C++17 structured bindings
George Karpenkov [Sat, 31 Mar 2018 01:20:06 +0000 (01:20 +0000)]
[analyzer] Fix liveness calculation for C++17 structured bindings

C++ structured bindings for non-tuple-types are defined in a peculiar
way, where the resulting declaration is not a VarDecl, but a
BindingDecl.
That means a lot of existing machinery stops working.

rdar://36912381

Differential Revision: https://reviews.llvm.org/D44956

llvm-svn: 328910

3 years ago[ThinLTO] Add an option to force summary call edges cold for debugging
Teresa Johnson [Sat, 31 Mar 2018 00:18:08 +0000 (00:18 +0000)]
[ThinLTO] Add an option to force summary call edges cold for debugging

Summary:
Useful to selectively disable importing into specific modules for
debugging/triaging/workarounds.

Reviewers: eraman

Subscribers: inglorion, llvm-commits

Differential Revision: https://reviews.llvm.org/D45062

llvm-svn: 328909

3 years ago[ELF] Simplify read32. NFC
Fangrui Song [Fri, 30 Mar 2018 23:13:00 +0000 (23:13 +0000)]
[ELF] Simplify read32. NFC

llvm-svn: 328908

3 years agoFix a bunch of typoes. NFC
Fangrui Song [Fri, 30 Mar 2018 22:22:31 +0000 (22:22 +0000)]
Fix a bunch of typoes. NFC

llvm-svn: 328907

3 years ago[ASTImporter] Add test helper Fixture
Peter Szecsi [Fri, 30 Mar 2018 22:03:29 +0000 (22:03 +0000)]
[ASTImporter] Add test helper Fixture

Add a helper test Fixture, so we can add tests which can check internal
attributes of AST nodes like getPreviousDecl(), isVirtual(), etc.
This enables us to check if a redeclaration chain is correctly built during
import, if the virtual flag is preserved during import, etc. We cannot check
such attributes with the existing testImport.
Also, this fixture makes it possible to import from several "From" contexts.

We also added several test cases here, some of them are disabled.
We plan to pass the disabled tests in other patches.

Patch by Gabor Marton!

Differential Revision: https://reviews.llvm.org/D43967

llvm-svn: 328906

3 years agoELF: Place ordered sections in the middle of the unordered section list on targets...
Peter Collingbourne [Fri, 30 Mar 2018 21:36:54 +0000 (21:36 +0000)]
ELF: Place ordered sections in the middle of the unordered section list on targets with limited-range branches.

It generally does not matter much where we place sections ordered
by --symbol-ordering-file relative to other sections. But if the
ordered sections are hot (which is the case already for some users
of --symbol-ordering-file, and is increasingly more likely to be
the case once profile-guided section layout lands) and the target
has limited-range branches, it is beneficial to place the ordered
sections in the middle of the output section in order to decrease
the likelihood that a range extension thunk will be required to call
a hot function from a cold function or vice versa.

That is what this patch does. After D44966 it reduces the size of
Chromium for Android's .text section by 60KB.

Differential Revision: https://reviews.llvm.org/D44969

llvm-svn: 328905

3 years agoPrevent data races in concurrent ThinLTO processes.
Ekaterina Romanova [Fri, 30 Mar 2018 21:35:42 +0000 (21:35 +0000)]
Prevent data races in concurrent ThinLTO processes.

Make sure ThinLTO with caching doesn't use non-atomic writes to the cache file (to prevent data races and cache files corruption).

1. Place temp file to the same place where the caching directory is (instead of creating it the directory pointed to by TMP/TEMP variable). This will help to prevent using non-atomic rename and falling back to non-atomic "direct" write to the cache file.
2. if rename failed do not write to the cache file directly (direct write to the file is non-atomic and could cause data race conditions).
3. if cache file doesn't exist (e.g., because 'rename' failed or because some other reasons), bypass using the cache altogether.

Differential Revision:  https://reviews.llvm.org/D45076

llvm-svn: 328904

3 years ago[analyzer] Fix test triple in missing-bind-temporary.cpp.
Artem Dergachev [Fri, 30 Mar 2018 21:22:35 +0000 (21:22 +0000)]
[analyzer] Fix test triple in missing-bind-temporary.cpp.

Otherwise the default triple for x86-windows-msvc2015 auto-inserts
__attribute__((thiscall)) to some calls.

Fixes the respective buildbot.

llvm-svn: 328903