Commit Graph

4333 Commits

Author SHA1 Message Date
Krzysztof Parzyszek cc5cd2c013 [Hexagon] Add front-end support for Hexagon V65
llvm-svn: 320579
2017-12-13 13:48:07 +00:00
Craig Topper 9a724aa38f [Driver][CodeGen] Add -mprefer-vector-width driver option and attribute during CodeGen.
This adds a new command line option -mprefer-vector-width to specify a preferred vector width for the vectorizers. Valid values are 'none' and unsigned integers. The driver will check that it meets those constraints. Specific supported integers will be managed by the targets in the backend.

Clang will take the value and add it as a new function attribute during CodeGen.

This represents the alternate direction proposed by Sanjay in this RFC: http://lists.llvm.org/pipermail/llvm-dev/2017-November/118734.html

The syntax here matches gcc, though gcc treats it as an x86 specific command line argument. gcc only allows values of 128, 256, and 512. I'm not having clang check any values.

Differential Revision: https://reviews.llvm.org/D40230

llvm-svn: 320419
2017-12-11 21:09:19 +00:00
Erich Keane 6c4835978a Revert 320391: Certain targets are failing, pulling back to diagnose.
llvm-svn: 320398
2017-12-11 18:14:51 +00:00
Erich Keane bb322555af For Linux/gnu compatibility, preinclude <stdc-predef.h> if the file is available
As reported in llvm bugzilla 32377.
Here’s a patch to add preinclude of stdc-predef.h.

The gcc documentation says “On GNU/Linux, <stdc-predef.h> is pre-included.” See https://gcc.gnu.org/gcc-4.8/porting_to.html;

The preinclude is inhibited with –ffreestanding.

Basically I fixed the failing test cases by adding –ffreestanding which inhibits this behavior.

I fixed all the failing tests, including some in extra/test, there's a separate patch for that which is linked here

Note: this is a recommit after a test failure took down the original (r318669)

Patch By: mibintc
Differential Revision: https://reviews.llvm.org/D34158

llvm-svn: 320391
2017-12-11 17:36:42 +00:00
Simon Pilgrim d038b475ac Fix MSVC 'not all control paths return a value' warning
llvm-svn: 320297
2017-12-10 11:05:14 +00:00
Alex Lorenz f04fb276e7 [driver][darwin] Refactor the target selection code, NFC
The simulator variant of Darwin's platforms is removed in favor of a new
environment field.
The code that selects the platform and the version is split into 4 different
functions instead of being all in one function.
This is an NFC commit, although it slightly improves the
"invalid version number" diagnostic by displaying the environment variable
instead of -m<os>-version-min if the OS version was derived from the
environment.

rdar://35813850

Differential Revision: https://reviews.llvm.org/D41035

llvm-svn: 320235
2017-12-09 02:27:11 +00:00
Evgeniy Stepanov 12817e59de Hardware-assisted AddressSanitizer (clang part).
Summary:
Driver, frontend and LLVM codegen for HWASan.
A clone of ASan, basically.

Reviewers: kcc, pcc, alekseyshl

Subscribers: srhines, javed.absar, cfe-commits

Differential Revision: https://reviews.llvm.org/D40936

llvm-svn: 320232
2017-12-09 01:32:07 +00:00
Kamil Rytarowski 62d421f32b Don't link NetBSD programs with -ldl in linkXRayRuntimeDeps
Summary:
There is no such library on NetBSD, the corresponding functions like dlopen(3) are in libc.

Sponsored by <The NetBSD Foundation>

Reviewers: joerg, vitalybuka, eugenis

Reviewed By: vitalybuka

Subscribers: dberris, llvm-commits, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D41021

llvm-svn: 320220
2017-12-09 00:34:01 +00:00
Kamil Rytarowski bb9a852afd Fix a comment in the code
The -ldl library is missing on NetBSD too, make the comment more generic.

llvm-svn: 320165
2017-12-08 17:38:25 +00:00
Alex Lorenz 6cdef0efb7 [driver] Set the 'simulator' environment for Darwin when compiling for
iOS/tvOS/watchOS simulator

rdar://35135215

Differential Revision: https://reviews.llvm.org/D40682

llvm-svn: 320073
2017-12-07 19:04:10 +00:00
Sam Clegg d09a356666 [WebAssembly] Pass through --undefined to Wasm LLD
This is a follow-on to D40724 (Wasm entrypoint changes #1,
add `--undefined` argument to LLD).

Patch by Nicholas Wilson

Differential Revision: https://reviews.llvm.org/D40739

llvm-svn: 319623
2017-12-02 23:11:13 +00:00
Keith Walker c5bbd11406 Revert [ARM] disable FPU features when using soft floating point.
This reverts r319420
It is failing the test Driver/arm-mfpu.c so reverting while I investigate the failure.

llvm-svn: 319425
2017-11-30 12:05:18 +00:00
Keith Walker a4097075e2 [ARM] disable FPU features when using soft floating point.
To be compatible with GCC if soft floating point is in effect any FPU
specified is effectively ignored, eg,

  -mfloat-abi=soft -fpu=neon

If any floating point features which require FPU hardware are enabled
they must be disable.

There was some support for doing this for NEON, but it did not handle
VFP, nor did it prevent the backend from emitting the build attribute
Tag_FP_arch describing the generated code as using the floating point
hardware if a FPU was specified (even though soft float does not use
the FPU).

Disabling the hardware floating point features for targets which are
compiling for soft float has meant that some tests which were incorrectly
checking for hardware support also needed to be updated. In such cases,
where appropriate the tests have been updated to check compiling for
soft float and a non-soft float variant (usually softfp). This was
usually because the target specified in the test defaulted to soft float.

Differential Revision: https://reviews.llvm.org/D40256

llvm-svn: 319420
2017-11-30 11:38:56 +00:00
Dean Michael Berris 1a5b10d5b4 [XRay][clang] Introduce -fxray-always-emit-customevents
Summary:
The -fxray-always-emit-customevents flag instructs clang to always emit
the LLVM IR for calls to the `__xray_customevent(...)` built-in
function. The default behaviour currently respects whether the function
has an `[[clang::xray_never_instrument]]` attribute, and thus not lower
the appropriate IR code for the custom event built-in.

This change allows users calling through to the
`__xray_customevent(...)` built-in to always see those calls lowered to
the corresponding LLVM IR to lay down instrumentation points for these
custom event calls.

Using this flag enables us to emit even just the user-provided custom
events even while never instrumenting the start/end of the function
where they appear. This is useful in cases where "phase markers" using
__xray_customevent(...) can have very few instructions, must never be
instrumented when entered/exited.

Reviewers: rnk, dblaikie, kpw

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D40601

llvm-svn: 319388
2017-11-30 00:04:54 +00:00
Reid Kleckner 7383b8e4fe Reformat switch statement added in r319297, NFC
llvm-svn: 319364
2017-11-29 21:36:00 +00:00
Chad Rosier 5360f9404e [Driver] Turns out the GNU assembler does support falkor/saphira.
llvm-svn: 319323
2017-11-29 16:42:44 +00:00
Ismail Donmez 64f99dfa08 Fix function call to fix build
../tools/clang/lib/Driver/ToolChains/Cuda.cpp:80:18: error: reference to non-static member function must be called; did you mean to call it with no arguments?
    if (Distro(D.getVFS).IsDebian())
               ~~^~~~~~
                       ()

llvm-svn: 319322
2017-11-29 15:18:02 +00:00
Sylvestre Ledru 02082c39f3 Follow up of r319317, add the missing header file
llvm-svn: 319319
2017-11-29 15:11:53 +00:00
Sylvestre Ledru 0cfcdc3ffd Add the nvidia-cuda-toolkit Debian package path to search path
Summary:
Reported here:
http://bugs.debian.org/882505

Patch by Andreas Beckmann


Reviewers: Hahnfeld, tra

Reviewed By: tra

Subscribers: jlebar, cfe-commits

Differential Revision: https://reviews.llvm.org/D40453

llvm-svn: 319317
2017-11-29 15:03:28 +00:00
Martell Malone c950c651a4 Toolchain: Normalize dwarf, sjlj and seh eh
This is a re-apply of r319294.

adds -fseh-exceptions and -fdwarf-exceptions flags

clang will check if the user has specified an exception model flag,
in the absense of specifying the exception model clang will then check
the driver default and append the model flag for that target to cc1

-fno-exceptions has a higher priority then specifying the model

move __SEH__ macro definitions out of Targets into InitPreprocessor
behind the -fseh-exceptions flag

move __ARM_DWARF_EH__ macrodefinitions out of verious targets and into
InitPreprocessor behind the -fdwarf-exceptions flag and arm|thumb check

remove unused USESEHExceptions from the MinGW Driver

fold USESjLjExceptions into a new GetExceptionModel function that
gives the toolchain classes more flexibility with eh models

Reviewers: rnk, mstorsjo

Differential Revision: https://reviews.llvm.org/D39673

llvm-svn: 319297
2017-11-29 07:25:12 +00:00
Martell Malone 2fa25706ed Revert "Toolchain: Normalize dwarf, sjlj and seh eh"
This reverts rL319294.
The windows sanitizer does not like seh on x86.
Will re apply with None type for x86

llvm-svn: 319295
2017-11-29 06:51:27 +00:00
Martell Malone 390cfcb0b1 Toolchain: Normalize dwarf, sjlj and seh eh
adds -fseh-exceptions and -fdwarf-exceptions flags

clang will check if the user has specified an exception model flag,
in the absense of specifying the exception model clang will then check
the driver default and append the model flag for that target to cc1

clang cc1 assumes dwarf is the default if none is passed
and -fno-exceptions has a higher priority then specifying the model

move __SEH__ macro definitions out of Targets into InitPreprocessor
behind the -fseh-exceptions flag

move __ARM_DWARF_EH__ macrodefinitions out of verious targets and into
InitPreprocessor behind the -fdwarf-exceptions flag and arm|thumb check

remove unused USESEHExceptions from the MinGW Driver

fold USESjLjExceptions into a new GetExceptionModel function that
gives the toolchain classes more flexibility with eh models

Reviewers: rnk, mstorsjo

Differential Revision: https://reviews.llvm.org/D39673

llvm-svn: 319294
2017-11-29 06:25:13 +00:00
Dan Gohman 1384ee936e [WebAssemby] Enable "-mthread-model single" by default, for now.
The WebAssembly standard does not yet have threads, and while it's in the
process of being standardized, it'll take some time for it to make it
through and be available in all popular implementations. With increasing
numbers of people using the LLVM wasm backend through LLVM directly rather
than through Emscripten, it's increasingly important to have friendly
defaults.

See also https://bugs.llvm.org/show_bug.cgi?id=35411

llvm-svn: 319101
2017-11-27 21:39:16 +00:00
Pirama Arumuga Nainar 87ff0a7467 Switch CPU names not recognized by GNU assembler
Summary:
Switch CPU names not recognized by GNU assembler to a close CPU that it
does recognize.  In this patch, kryo, falkor and saphira all get
replaced by cortex-a57 when invoking the assembler.  In addition, krait
was already being replaced by cortex-a15.

Reviewers: weimingz

Subscribers: srhines, cfe-commits

Differential Revision: https://reviews.llvm.org/D40476

llvm-svn: 319077
2017-11-27 19:18:39 +00:00
Kamil Rytarowski 2ce208d8e2 Enable additonal features in NetBSD
Summary:
Enable for x86_64:

 - ESan,
 - KASan,
 - MSan.

Enable for x86_64 and i386:

 - Scudo.

These features are under active development and in various level of completeness.

Sponsored by <The NetBSD Foundation>

Reviewers: dvyukov, joerg, vitalybuka, eugenis

Reviewed By: eugenis

Subscribers: llvm-commits, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D40456

llvm-svn: 319007
2017-11-26 22:24:22 +00:00
Petr Hosek 5668d83e0e [Driver] Make the use of relax relocations a per target option
The support for relax relocations is dependent on the linker and
different toolchains within the same compiler can be using different
linkers some of which may or may not support relax relocations.

Give toolchains the option to control whether they want to use relax
relocations in addition to the existing (global) build system option.

Differential Revision: https://reviews.llvm.org/D39831

llvm-svn: 318816
2017-11-22 01:38:31 +00:00
Hans Wennborg 14e8a5a32d Add -finstrument-function-entry-bare flag
This is an instrumentation flag that's similar to
-finstrument-functions, but it only inserts calls on function entry, the
calls are inserted post-inlining, and they don't take any arugments.

This is intended for users who want to instrument function entry with
minimal overhead.

(-pg would be another alternative, but forces frame pointer emission and
affects link flags, so is probably best left alone to be used for
generating gcov data.)

Differential revision: https://reviews.llvm.org/D40276

llvm-svn: 318785
2017-11-21 17:30:34 +00:00
Jonas Hahnfeld 7c78cc5273 [OpenMP] Consistently use cubin extension for nvlink
This was previously done in some places, but for example not for
bundling so that single object compilation with -c failed. In
addition cubin was used for all file types during unbundling which
is incorrect for assembly files that are passed to ptxas.
Tighten up the tests so that we can't regress in that area.

Differential Revision: https://reviews.llvm.org/D40250

llvm-svn: 318763
2017-11-21 14:44:45 +00:00
Erich Keane 523edb0a3a Revert r318669/318694
Broke some libclang tests, so reverting for now.

llvm-svn: 318698
2017-11-20 21:46:29 +00:00
Mandeep Singh Grang 8f54ae15a0 [AutoComplete] Use stronger sort predicate for autocomplete candidates to remove non-deterministic ordering
Summary: This fixes the failure in test/Driver/autocomplete.c uncovered by D39245.

Reviewers: yamaguchi, teemperor, ruiu

Reviewed By: yamaguchi, ruiu

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D40234

llvm-svn: 318681
2017-11-20 18:49:14 +00:00
Erich Keane 5c086c7626 For Linux/gnu compatibility, preinclude <stdc-predef.h> if the file is available
As reported in llvm bugzilla 32377.
Here’s a patch to add preinclude of stdc-predef.h.

The gcc documentation says “On GNU/Linux, <stdc-predef.h> is pre-included.” 
See https://gcc.gnu.org/gcc-4.8/porting_to.html;

The preinclude is inhibited with –ffreestanding.

Basically I fixed the failing test cases by adding –ffreestanding which inhibits
this behavior.

I fixed all the failing tests, including some in extra/test, there's a separate
patch for that which is linked here

Patch By: mibintc

Differential Revision: https://reviews.llvm.org/D34158

llvm-svn: 318669
2017-11-20 17:57:42 +00:00
Peter Smith 931c9fa8fe [ARM] For assembler files recognize -Xassembler or -Wa, -mthumb
Attempt to fix warning picked up by buildbot.

llvm-svn: 318648
2017-11-20 13:53:55 +00:00
Peter Smith 3947cb3cf0 [ARM] For assembler files recognize -Xassembler or -Wa, -mthumb
The Unified Arm Assembler Language is designed so that the majority of
assembler files can be assembled for both Arm and Thumb with the choice
made as a compilation option.

The way this is done in gcc is to pass -mthumb to the assembler with either
-Wa,-mthumb or -Xassembler -mthumb. This change adds support for these
options to clang. There is no assembler equivalent of -mno-thumb, -marm or
-mno-arm so we don't need to recognize these.

Ideally we would do all of the processing in
CollectArgsForIntegratedAssembler(). Unfortunately we need to change the
triple and at that point it is too late. Instead we look for the option
earlier in ComputeLLVMTriple().
    
Fixes PR34519
    
Differential Revision: https://reviews.llvm.org/D40127

llvm-svn: 318647
2017-11-20 13:43:55 +00:00
Saleem Abdulrasool b3a66f7641 Driver: remove `SupportsObjCGC` (NFC)
This option is not used in the frontend.  Remove the method.

llvm-svn: 318609
2017-11-19 00:45:33 +00:00
Martell Malone 13c5d7379a [Driver] add initial support for alpine linux
set -pie as default for musl linux targets
add detection of alpine linux
append appropriate compile flags for alpine

Reviewers: rnk

Differential Revision: https://reviews.llvm.org/D39588

llvm-svn: 318608
2017-11-19 00:08:12 +00:00
Hans Wennborg 76c26c1dca Switch -mcount and -finstrument-functions to emit EnterExitInstrumenter attributes
This updates -mcount to use the new attribute names (LLVM r318195), and
switches over -finstrument-functions to also use these attributes rather
than inserting instrumentation in the frontend.

It also adds a new flag, -finstrument-functions-after-inlining, which
makes the cygprofile instrumentation get inserted after inlining rather
than before.

Differential Revision: https://reviews.llvm.org/D39331

llvm-svn: 318199
2017-11-14 21:13:27 +00:00
Hans Wennborg 5fd1f17370 Update a link to the old code.google.com bug tracker
llvm-svn: 318109
2017-11-13 23:27:54 +00:00
Mandeep Singh Grang 789b19a6b6 [clang] Remove redundant return [NFC]
Reviewers: rsmith, sfantao, mcrosier

Reviewed By: mcrosier

Subscribers: jholewinski, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D39915

llvm-svn: 318074
2017-11-13 19:29:31 +00:00
Jake Ehrlich c451cf240b Add CLANG_DEFAULT_OBJCOPY to allow Clang to use llvm-objcopy for dwarf fission
llvm-objcopy is getting to where it can be used in non-trivial ways
(such as for dwarf fission in clang). It now supports dwarf fission but
this feature hasn't been thoroughly tested yet. This change allows
people to optionally build clang to use llvm-objcopy rather than GNU
objcopy. By default GNU objcopy is still used so nothing should change.

Differential Revision: https://reviews.llvm.org/D39029

llvm-svn: 317960
2017-11-11 01:15:41 +00:00
Konstantin Zhuravlyov 8914a6d50e AMDGPU/NFC: Move getAMDGPUTargetFeatures to AMDGPU toolchain
Differential Revision: https://reviews.llvm.org/D39877

llvm-svn: 317909
2017-11-10 19:09:57 +00:00
Dean Michael Berris 46d0cd3413 Revert "[XRay][darwin] Initial XRay in Darwin Support"
This reverts r317875.

llvm-svn: 317877
2017-11-10 07:00:55 +00:00
Dean Michael Berris bfd111bca5 [XRay][darwin] Initial XRay in Darwin Support
Summary:
This change implements the changes required in both clang and
compiler-rt to allow building XRay-instrumented binaries in Darwin. For
now we limit this to x86_64. We also start building the XRay runtime
library in compiler-rt for osx.

A caveat to this is that we don't have the tests set up and running
yet, which we'll do in a set of follow-on changes.

This patch uses the monorepo layout for the coordinated change across
multiple projects.

Reviewers: kubamracek

Subscribers: mgorny, cfe-commits, llvm-commits

Differential Revision: https://reviews.llvm.org/D39114

llvm-svn: 317875
2017-11-10 05:50:13 +00:00
Steven Wu 9278019eb3 [Driver] Make clang/cc conforms to UNIX standard
Summary:
This is basically reverting r261774 with a tweak for clang-cl. UNIX
standard states:
When c99 encounters a compilation error that causes an object file not
to be created, it shall write a diagnostic to standard error and
continue to compile other source code operands, but it shall not perform
the link phase and it shall return a non-zero exit status

The same goes for c89 or cc. And they are all alias or shims pointing to
clang on Darwin.

The original commit was intended for CUDA so the error message doesn't
get emit twice for both host and device. It seems that the clang driver
has been changed to model the CUDA dependency differently. Now the
driver behaves the same without this commit.

rdar://problem/32223263

Reviewers: thakis, dexonsmith, tra

Reviewed By: tra

Subscribers: jlebar, cfe-commits

Differential Revision: https://reviews.llvm.org/D39502

llvm-svn: 317860
2017-11-10 01:32:47 +00:00
Sriraman Tallam 5c65148565 New clang option -fno-plt which avoids the PLT and lazy binding while making external calls.
Differential Revision: https://reviews.llvm.org/D39079

llvm-svn: 317605
2017-11-07 19:37:51 +00:00
Dave Lee f96bedfce3 Vary Windows toolchain selection by -fuse-ld
Summary:
This change allows binutils to be used for linking with MSVC. Currently, when
using an MSVC target and `-fuse-ld=bfd`, the driver produces an invalid linker
invocation.

Reviewers: rnk, compnerd

Reviewed By: compnerd

Subscribers: smeenai, cfe-commits

Differential Revision: https://reviews.llvm.org/D39509

llvm-svn: 317511
2017-11-06 21:18:05 +00:00
Martell Malone db5b34ce30 [Driver] MinGW: Remove custom linker detection
This is a re-apply of rL313082 which was reverted in rL313088

In rL289668 the ability to specify the default linker at compile time
was added but because the MinGW driver used custom detection we could
not take advantage of this new CMAKE flag CLANG_DEFAULT_LINKER.

rL289668 added no test cases and the mingw driver was either overlooked
or purposefully skipped because it has some custom linker tests
Removing them here because they are covered by the generic case.

Reviewers: rnk

Differntial Revision: https://reviews.llvm.org/D37727

llvm-svn: 317397
2017-11-04 02:07:59 +00:00
Kostya Kortchinsky 8acdc98271 [Driver] Add Scudo as a possible -fsanitize= option
Summary:
This change adds Scudo as a possible Sanitizer option via -fsanitize=.
This allows for easier static & shared linking of the Scudo library, it allows
us to enforce PIE (otherwise the security of the allocator is moot), and check
for incompatible Sanitizers combo.

In its current form, Scudo is not compatible with any other Sanitizer, but the
plan is to make it work in conjunction with UBsan (-fsanitize=scudo,undefined),
which will require additional work outside of the scope of this change.

Reviewers: eugenis, kcc, alekseyshl

Reviewed By: eugenis, alekseyshl

Subscribers: llvm-commits, srhines

Differential Revision: https://reviews.llvm.org/D39334

llvm-svn: 317337
2017-11-03 17:04:13 +00:00
Justin Lebar 648f4cad52 [CUDA] Mark CUDA as a no-errno platform.
Summary:
CUDA doesn't support errno at all, so this is the right thing -- or at
least, in the right direction.

But also, this unbreaks the CUDA test-suite math tests [0] after D39481.
__cuda_cmath.h forwards nexttoward() to __builtin_nexttoward, which,
after that patch, was lowering to a libcall that doesn't exist in NVPTX.

[0] http://lab.llvm.org:8011/builders/clang-cuda-build/builds/14999

Reviewers: tra

Subscribers: sanjoy, cfe-commits

Differential Revision: https://reviews.llvm.org/D39586

llvm-svn: 317297
2017-11-03 02:30:00 +00:00
Erich Keane a957ffbce3 Add default calling convention support for regcall.
Added support for regcall as default calling convention. Also added code to
exclude main when applying default calling conventions.

Patch-By: eandrews

Differential Revision: https://reviews.llvm.org/D39210

llvm-svn: 317268
2017-11-02 21:08:00 +00:00
Vlad Tsyrklevich 634c601fe3 [CFI] Add CFI-icall pointer type generalization
Summary:
This change allows generalizing pointers in type signatures used for
cfi-icall by enabling the -fsanitize-cfi-icall-generalize-pointers flag.
This works by 1) emitting an additional generalized type signature
metadata node for functions and 2) llvm.type.test()ing for the
generalized type for translation units with the flag specified.

This flag is incompatible with -fsanitize-cfi-cross-dso because it would
require emitting twice as many type hashes which would increase artifact
size.

Reviewers: pcc, eugenis

Reviewed By: pcc

Subscribers: kcc

Differential Revision: https://reviews.llvm.org/D39358

llvm-svn: 317044
2017-10-31 22:39:44 +00:00