Commit Graph

293 Commits

Author SHA1 Message Date
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
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
Saleem Abdulrasool 8ba8b02879 Driver: default to `unsigned int` `wchar_t` for ARM
AAPCS and AAPCS64 mandate that `wchar_t` with `-fno-short-wchar` is an
`unsigned int` rather than a `signed int`.  Ensure that the driver does
not flip the signedness of `wchar_t` for those targets.

Add additional tests to ensure that this does not regress.

llvm-svn: 316858
2017-10-29 06:01:14 +00:00
Aaron Ballman 6173655639 Fix a typo with -fno-double-square-bracket-attributes and add a test to demonstrate that it works as expected in C++11 mode. Additionally corrected the handling of -fdouble-square-bracket-attributes to be properly passed down to the cc1 option.
llvm-svn: 316275
2017-10-21 20:28:58 +00:00
Erich Keane 87baae2162 Allow /showIncludes with /P
r213589 was checked in as a solution to
https://bugs.llvm.org/show_bug.cgi?id=20336.

However, it is possible to use /EP with /P
to suppress #line directives AND output to
a file. There is no reason in that case to
suppress /showIncludes.

This was reported here:
https://bugs.llvm.org/show_bug.cgi?id=34997

Differential Revision: https://reviews.llvm.org/D39104

llvm-svn: 316225
2017-10-20 19:18:30 +00:00
Richard Smith daae9528b7 Revert r316193.
This patch breaks users using -fno-canonical-prefixes, for whom resolving
symlinks is not acceptable.

llvm-svn: 316195
2017-10-20 00:25:07 +00:00
Peter Wu 90161dad75 Try to shorten system header paths when using -MD depfiles
GCC tries to shorten system headers in depfiles using its real path
(resolving components like ".." and following symlinks). Mimic this
feature to ensure that the Ninja build tool detects the correct
dependencies when a symlink changes directory levels, see
https://github.com/ninja-build/ninja/issues/1330

An option to disable this feature is added in case "these changed header
paths may conflict with some compilation environments", see
https://gcc.gnu.org/ml/gcc-patches/2012-09/msg00287.html

Note that the original feature request for GCC
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52974) also included paths
preprocessed output (-E) and diagnostics. That is not implemented now
since I am not sure if it breaks something else.

Differential Revision: https://reviews.llvm.org/D37954

llvm-svn: 316193
2017-10-19 23:53:27 +00:00
Sumanth Gundapaneni 57098f5ac3 [Hexagon] Handling of new HVX flags and target-features
This patch has the following changes
A new flag "-mhvx-length={64B|128B}" is introduced to specify the length of the vector.
Previously we have used "-mhvx-double" for 128 Bytes. This adds the target-feature "+hvx-length{64|128}b"

The "-mhvx" flag must be provided on command line to enable HVX for Hexagon. If no -mhvx-length flag
is specified, a default length is picked from the arch mentioned in this priority order from either -mhvx=vxx
or -mcpu. For v60 and v62 the default length is 64 Byte. For unknown versions, the length is 128 Byte. The 
-mhvx flag adds the target-feature "+hvxv{hvx_version}"

The 64 Byte mode is soon going to be deprecated. A warning is emitted if 64 Byte is enabled. A warning is
still emitted for the default 64 Byte as well. This warning can be suppressed with a -Wno flag.

The "-mhvx-double" and "-mno-hvx-double" flags are deprecated. A warning is emitted if the driver sees
them on commandline. "-mhvx-double" is an alias to "-mhvx-length=128B"

The compilation will error out if -mhvx-length is specified with out an -mhvx/-mhvx= flag

The macro HVX_LENGTH is defined and is set to the length of the vector. 
Eg: #define HVX_LENGTH 64

The macro HVX_ARCH is defined and is set to the version of the HVX. 
Eg: #define HVX_ARCH 62

Differential Revision: https://reviews.llvm.org/D38852

llvm-svn: 316102
2017-10-18 18:10:13 +00:00
Wei Mi 9b3d627280 [Bitfield] Add an option to access bitfield in a fine-grained manner.
Currently all the consecutive bitfields are wrapped as a large integer unless there is unamed zero sized bitfield in between. The patch provides an alternative manner which makes the bitfield to be accessed as separate memory location if it has legal integer width and is naturally aligned. Such separate bitfield may split the original consecutive bitfields into subgroups of consecutive bitfields, and each subgroup will be wrapped as an integer. Now This is all controlled by an option -ffine-grained-bitfield-accesses. The alternative of bitfield access manner can improve the access efficiency of those bitfields with legal width and being aligned, but may reduce the chance of load/store combining of other bitfields, so it depends on how the bitfields are defined and actually accessed to choose when to use the option. For now the option is off by default.

Differential revision: https://reviews.llvm.org/D36562

llvm-svn: 315915
2017-10-16 16:50:27 +00:00
Martell Malone f6f6a9c199 [driver] [cl] Add/fix c++17/c++latest
Patch by: daxpedda

Differential Revision: https://reviews.llvm.org/D38123

llvm-svn: 315864
2017-10-15 17:27:58 +00:00
Saleem Abdulrasool 729379a1e1 Driver: hoist the `wchar_t` handling to the driver
Move the logic for determining the `wchar_t` type information into the
driver.  Rather than passing the single bit of information of
`-fshort-wchar` indicate to the frontend the desired type of `wchar_t`
through a new `-cc1` option of `-fwchar-type` and indicate the
signedness through `-f{,no-}signed-wchar`.  This replicates the current
logic which was spread throughout Basic into the
`RenderCharacterOptions`.

Most of the changes to the tests are to ensure that the frontend uses
the correct type.  Add a new test set under `test/Driver/wchar_t.c` to
ensure that we calculate the proper types for the various cases.

llvm-svn: 315126
2017-10-06 23:09:55 +00:00
Sumanth Gundapaneni 2d9aa7432f [Hexagon] Move getHexagonTargetFeatures to Hexagon.cpp (NFC)
Differential Revision: https://reviews.llvm.org/D38548

llvm-svn: 314926
2017-10-04 19:09:29 +00:00
Paul Robinson a82808115e [PS4] Tidy up some debug-tuning v. triple decision-making.
llvm-svn: 314558
2017-09-29 21:25:07 +00:00
Paul Robinson 1787f81221 [DWARF] Allow forward declarations of a class template instantiation
to have child entries describing the template parameters.  This will
be on by default for SCE tuning.

Differential Revision: https://reviews.llvm.org/D14358

llvm-svn: 314444
2017-09-28 18:37:02 +00:00
Vedant Kumar df50259f98 [Driver] Disable uwtable by default in -ffreestanding mode
We make the same decision when compiling the kernel or kexts -- we
should do this in -ffreestanding mode as well to avoid size regressions
in a potentially large set of firmware projects.

It's still possible to get uwtable information in -ffreestanding mode by
compiling with -funwind-tables (I expect this to be a rare case: I
certainly haven't seen any projects like that).

Context: -munwind-tables was enabled by default for some arm targets in
r310006.

Testing: check-clang

rdar://problem/33934446

Differential Revision: https://reviews.llvm.org/D37777

llvm-svn: 313087
2017-09-12 22:51:53 +00:00
Peter Collingbourne b52e23669c IR: Represent -ggnu-pubnames with a flag on the DICompileUnit.
This allows the flag to be persisted through to LTO.

Differential Revision: https://reviews.llvm.org/D37655

llvm-svn: 313078
2017-09-12 21:50:41 +00:00
Saleem Abdulrasool 015bded23f Driver: default to `-fno-use-cxatexit` on Windows
This primarily impacts the Windows MSVC and Windows itanium
environments.  Windows MSVC does not use `__cxa_atexit` and Itanium
follows suit.  Simplify the logic for the default value calculation and
blanket the Windows environments to default to off for use of
`__cxa_atexit`.

llvm-svn: 312941
2017-09-11 20:18:09 +00:00
Jonathan Roelofs 6fbb9e017d Fix validation of the -mthread-model flag in the Clang driver
The ToolChain class validates the -mthread-model flag in the constructor which
doesn't work correctly since the thread model methods are virtual methods. The
check is moved into Clang::ConstructJob() when constructing the internal
command line.

https://reviews.llvm.org/D37496

Patch by: Ian Tessier!

llvm-svn: 312748
2017-09-07 22:01:25 +00:00
Saleem Abdulrasool 6bf6a9a124 Driver: delete some dead code (NFC)
This code has been `#if 0`'ed out for a very long time.  After speaking
with Duncan, opt to remove it even if it is something which should be
fixed.  If the underlying issue is still valid, this can be restored
with proper explanation and tests.

llvm-svn: 312618
2017-09-06 05:11:19 +00:00
Saleem Abdulrasool c2320add83 Driver: remove unused variable (NFC)
Remove `IsHosted` which is no longer needed in `RenderSSPOptions` after
SVN r312595.  The single use can now be inlined.  NFC

llvm-svn: 312616
2017-09-06 04:56:23 +00:00
Bruno Cardoso Lopes bad2c4a000 Fix indentation mistake from r312595
llvm-svn: 312599
2017-09-06 00:44:10 +00:00
Bruno Cardoso Lopes c1843c2c85 [Darwin] Enable -fstack-protector (back) by default with -ffreestanding
Go back to behavior prior to r289005.

rdar://problem/32987198

llvm-svn: 312595
2017-09-05 23:50:58 +00:00
Saleem Abdulrasool 6c3ed7b654 Driver; extract target specific option application (NFC)
Extract the target specific option application.  This is a huge switch
which was inlined into the `ConstructJob` option which adds a large
amount of code to the already large function.  Extract it to simply
reduce the line count.  NFC

llvm-svn: 312436
2017-09-03 04:47:00 +00:00
Saleem Abdulrasool 9934eabaf9 Driver: extract debugging related options (NFC)
Out-of-line the logic for selecting the debug information handling.
This is still split across the new function and partially inline in the
job construction.  This is needed since the split portion attempts to
record the "-cc1" arguments.  This needs to be the very last item to
ensure that all the flags are recorded.  NFC.

llvm-svn: 312435
2017-09-03 04:46:59 +00:00
Saleem Abdulrasool fb302caa36 Driver: move `-mfpmath` into FP Options (NFC)
Move the `-mfpmath` handling with the rest of the floating point
optimization flags.

llvm-svn: 312434
2017-09-03 04:46:57 +00:00
Saleem Abdulrasool 99f4ead12a Driver: extract `-fbuiltin` option handling (NFC)
Extract the handling of the `-fbuiltin` family of flags to the driver.
This centralises the handling of those options, keeping the long
standing `#if 0`'ed block of code.  This requires some additional code
archaeology to determine if we need to enable this functionality.

llvm-svn: 312392
2017-09-01 23:44:01 +00:00
Saleem Abdulrasool e6d219df25 Driver: extract floating point optimization handling (NFC)
Extract the logic for the floating point handling into its own function.
None of this information is needed for calculating the remainder of the
arguments to the frontend.  NFC

llvm-svn: 312385
2017-09-01 22:04:24 +00:00
Saleem Abdulrasool 75557fa024 Driver: extract diagnostics flag handling (NFC)
Extract a function to render the diagnostics options to the clang
frontend.  This continues the simplification of the clang cc1 command
line invocation generation.  NFC

llvm-svn: 312351
2017-09-01 18:57:34 +00:00
Saleem Abdulrasool b2d4ebb0c0 Driver: extract ObjC option rendering (NFC)
Extract the ObjC option rendering for the frontend.  This localises the
option translation.  It augments the existing `AddRuntimeObjCOptions`
which handles the runtime/ABI versioning flags only.  This new function
handles the non-runtime selecting flags.  This logic was previously
inlined into the `ConstructJob` function.

Minor change to the flag ordering to group the blocks related flags
together.

llvm-svn: 312344
2017-09-01 17:43:59 +00:00
Saleem Abdulrasool e196e94eca Driver: extract modules flag handling (NFC)
Extract a function to render the options related to modules.  This
reduces the cyclomatic complexity of the `ConstructJob` function.  NFC.

llvm-svn: 312330
2017-09-01 15:25:17 +00:00
Saleem Abdulrasool 0a322c6c81 Driver: extract ARCMT flag construction (NFC)
Extract the ARC migration tool flag handling into its own function.
This simplifies the flow of the clang frontend command line construction
function.  NFC.

llvm-svn: 312244
2017-08-31 15:35:01 +00:00
Boris Kolpackov d30446fd77 [modules] Add ability to specify module name to module file mapping (reapply)
Extend the -fmodule-file option to support the [<name>=]<file> value format.
If the name is omitted, then the old semantics is preserved (the module file
is loaded whether needed or not). If the name is specified, then the mapping
is treated as just another prebuilt module search mechanism, similar to
-fprebuilt-module-path, and the module file is only loaded if actually used
(e.g., via import). With one exception: this mapping also overrides module
file references embedded in other modules (which can be useful if module files
are moved/renamed as often happens during remote compilation).

This override semantics requires some extra work: we now store the module name
in addition to the file name in the serialized AST representation.

Reviewed By: rsmith

Differential Revision: https://reviews.llvm.org/D35020

llvm-svn: 312220
2017-08-31 06:26:43 +00:00
Saleem Abdulrasool 24aafa5799 Driver: out-of-line static analyzer flag handling (NFC)
Extract the analyzer flag handling into its own function to reduce the
overall complexity of the construction of the clang compiler arguments.
NFC.

llvm-svn: 312124
2017-08-30 14:18:08 +00:00
Victor Leschuk db68911b07 Revert r312105 [modules] Add ability to specify module name to module file mapping
Looks like it breaks win10 builder.

llvm-svn: 312112
2017-08-30 11:31:56 +00:00
Boris Kolpackov 7a71b4b658 [modules] Add ability to specify module name to module file mapping
Extend the -fmodule-file option to support the [<name>=]<file> value format.
If the name is omitted, then the old semantics is preserved (the module file
is loaded whether needed or not). If the name is specified, then the mapping
is treated as just another prebuilt module search mechanism, similar to
-fprebuilt-module-path, and the module file is only loaded if actually used
(e.g., via import). With one exception: this mapping also overrides module
file references embedded in other modules (which can be useful if module files
are moved/renamed as often happens during remote compilation).

This override semantics requires some extra work: we now store the module name
in addition to the file name in the serialized AST representation.

Reviewed By: rsmith

Differential Revision: https://reviews.llvm.org/D35020

llvm-svn: 312105
2017-08-30 08:45:59 +00:00
Saleem Abdulrasool d5ba54549d Driver: refactor SSP argument handling (NFC)
Out-of-line the SSP argument handling for the sake of readability.  Pass
along some state information to avoid re-computing the command line
flags.

llvm-svn: 312084
2017-08-29 23:59:08 +00:00
Saleem Abdulrasool 68c808f6e3 Driver: refactor OpenCL argument forwarding
Extract the argument forwarding for OpenCL arguments.  Make this more
data driven as we are just repeating the argument name and spelling.
This costs a slight bit more memory due to the string duplication, but
makes it easier to follow.  It should be possible to forward the
internal string representation from the TableGen data to avoid this.
But, this makes the code simpler to follow for now.

llvm-svn: 312083
2017-08-29 23:59:07 +00:00
Saleem Abdulrasool 33d4138235 Driver: reuse existing `D` variable (NFC)
Change the rest of the function to use the `D` variable for the driver
instance.  NFC.

llvm-svn: 312082
2017-08-29 23:59:06 +00:00
Saleem Abdulrasool 374b558603 Driver: hoist a local variable (NFC)
Hoist the `getToolChain().getTriple()` to a variable rather than
re-fetching it every time.  NFC.

llvm-svn: 312081
2017-08-29 23:59:05 +00:00
Reid Kleckner ea2683ecb8 Fix inaccurate comment about -fdelayed-template-parsing and MSVC
llvm-svn: 311899
2017-08-28 17:59:24 +00:00
Richard Smith f667ad5f98 Add flag to request Clang is ABI-compatible with older versions of itself
This patch adds a flag -fclang-abi-compat that can be used to request that
Clang attempts to be ABI-compatible with some older version of itself.

This is provided on a best-effort basis; right now, this can be used to undo
the ABI change in r310401, reverting Clang to its prior C++ ABI for pass/return
by value of class types affected by that change, and to undo the ABI change in
r262688, reverting Clang to using integer registers rather than SSE registers
for passing <1 x long long> vectors. The intent is that we will maintain this
backwards compatibility path as we make ABI-breaking fixes in future.

The reversion to the old behavior for r310401 is also applied to the PS4 target
since that change is not part of its platform ABI (which is essentially to do
whatever Clang 3.2 did).

llvm-svn: 311823
2017-08-26 01:04:35 +00:00
Dehao Chen 5e97f23441 Expose -mllvm -accurate-sample-profile to clang.
Summary: With accurate sample profile, we can do more aggressive size optimization. For some size-critical application, this can reduce the text size by 20%

Reviewers: davidxl, rsmith

Reviewed By: davidxl, rsmith

Subscribers: mehdi_amini, eraman, sanjoy, cfe-commits

Differential Revision: https://reviews.llvm.org/D37091

llvm-svn: 311707
2017-08-24 21:37:33 +00:00
Hal Finkel 67814df3ea Base optimization-record file names on the final output
Using Output.getFilename() to construct the file name used for optimization
recording in Clang::ConstructJob, when -c is provided, does not work correctly
if we're not using the integrated assembler. With -no-integrated-as (or
-save-temps) Output.getFilename() gives the name of the temporary assembly
file, not the final output file. Instead, use the final output (as provided by
-o). If this is not available, then fall back to using a name based on the
input file.

Fixes PR31532.

llvm-svn: 311041
2017-08-16 21:34:27 +00:00
Simon Dardis ad9d05de8f [mips] Support implicit gpopt with N64 when using -fno-pic
As clang defaults to -mno-abicalls when using -fno-pic for N64, implicitly use
-mgpopt in that case.

Reviewers: atanasyan

Differential Revision: https://reviews.llvm.org/D36315

llvm-svn: 310714
2017-08-11 15:01:34 +00:00
Gheorghe-Teodor Bercea 2c92693280 [OpenMP] OpenMP device offloading code generation produces a cubin file which is then integrated in the host binary using the host linker.
Diff: D29654

llvm-svn: 310362
2017-08-08 14:33:05 +00:00
Alex Lorenz 7e9c478cda Revert r310291, r310300 and r310332 because of test failure on Darwin
The commit r310291 introduced the failure. r310332 was a test fix commit and
r310300 was a followup commit. I reverted these two to avoid merge conflicts
when reverting.

The 'openmp-offload.c' test is failing on Darwin because the following
run lines:
// RUN:   touch %t1.o
// RUN:   touch %t2.o
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -save-temps -no-canonical-prefixes %t1.o %t2.o 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-TWOCUBIN %s

trigger the following assertion:

Driver.cpp:3418:
    assert(CachedResults.find(ActionTC) != CachedResults.end() &&
           "Result does not exist??");

llvm-svn: 310345
2017-08-08 11:20:17 +00:00
Gheorghe-Teodor Bercea 4cdba82ee0 [OpenMP] Integrate OpenMP target region cubin into host binary
Summary: OpenMP device offloading code generation produces a cubin file which is then integrated in the host binary using the host linker.

Reviewers: arpith-jacob, caomhin, carlo.bertolli, ABataev, Hahnfeld, jlebar, rnk, hfinkel, tstellar

Reviewed By: hfinkel

Subscribers: sfantao, rnk, rengolin, cfe-commits

Differential Revision: https://reviews.llvm.org/D29654

llvm-svn: 310291
2017-08-07 20:01:48 +00:00
Akira Hatanaka b72e35a4c4 [Driver][Darwin] Pass -munwind-table when !UseSjLjExceptions.
This commit fixes a bug where clang/llvm doesn't emit an unwind table
for a function when it is marked noexcept. Without this patch, the
following code terminates with an uncaught exception on ARM64:

int foo1() noexcept {
  try {
    throw 0;
  } catch (int i) {
    return 0;
  }
  return 1;
}

int main() {
  return foo1();
}

rdar://problem/32411865

Differential Revision: https://reviews.llvm.org/D35693

llvm-svn: 310006
2017-08-03 23:55:42 +00:00
Simon Dardis d72c5e54c0 [mips] Revert r309942 & r309940
This reverts commit r309942 & commit r309940.

A revert was requested following post commit review.

llvm-svn: 309978
2017-08-03 19:39:51 +00:00
Simon Dardis 50f6d35457 [mips] Implement -muninit-const-in-rodata
This option when combined with -mgpopt and -membedded-data places all
uninitialized constant variables in the read-only section.

Reviewers: atanasyan, nitesh.jain

Differential Revision: https://reviews.llvm.org/D35917

llvm-svn: 309940
2017-08-03 14:01:17 +00:00
Simon Dardis eeed000f62 [mips] Add support -m(no-)embedded-data option
Add support for the -membedded-data option which places constant data in
the .rodata section, rather than the .sdata section.

Reviewers: atanasyan, nitesh.jain

Differential Revision: https://reviews.llvm.org/D35914

llvm-svn: 309935
2017-08-03 13:04:29 +00:00
Simon Dardis 7d31878674 [mips] Add support for -m(no-)extern-data.
Add support for -m(no-)extern-data when using -mgpopt in the driver. It is
enabled by default in the backend.

Reviewers: atanasyan, slthakur

Differential Revision: https://reviews.llvm.org/D35550

llvm-svn: 308879
2017-07-24 14:02:09 +00:00
Simon Dardis 9f1d5d8cd5 [mips] Add support for -m(no-)local-sdata
Teach the driver to support -mlocal-sdata. The backend already matches GCC's
default behaviour.

Reviewers: atanasyan, slthakur

Differential Revision: https://reviews.llvm.org/D35549

llvm-svn: 308683
2017-07-20 22:23:21 +00:00
Simon Dardis 31636a1fd9 Reland "[mips] Teach the driver to accept -m(no-)gpopt."
This patch teaches the driver to pass -mgpopt by default to the backend when it
is supported, i.e. we are using -mno-abicalls.

Reviewers: atanasyan, slthakur

Differential Revision: https://reviews.llvm.org/D35548

This version fixes a logic error that generated warnings incorrectly and
gets rid of spurious arguments to the backend when -mgpopt is not used.

llvm-svn: 308619
2017-07-20 14:04:12 +00:00
Simon Dardis 4c5fd9cd7f Revert "Reland "[mips] Teach the driver to accept -m(no-)gpopt.""
This reverts r308458. Investigating further buildbot breakage.

llvm-svn: 308459
2017-07-19 13:34:08 +00:00
Simon Dardis badcc7e74b Reland "[mips] Teach the driver to accept -m(no-)gpopt."
This patch teaches the driver to pass -mgpopt by default to the backend when it
is supported, i.e. we are using -mno-abicalls.

Reviewers: atanasyan, slthakur

Differential Revision: https://reviews.llvm.org/D35548

This version fixes a logic error that generated warnings incorrectly.

llvm-svn: 308458
2017-07-19 13:12:37 +00:00
Simon Dardis a923f0e9ce Revert "[mips] Teach the driver to accept -m(no-)gpopt."
Revert r308431 and r308432, these caused broke some buildbots.

llvm-svn: 308436
2017-07-19 11:11:02 +00:00
Simon Dardis e435e41e01 [mips] Teach the driver to accept -m(no-)gpopt.
This patch teaches the driver to pass -mgpopt by default to the backend when it
is supported, i.e. we are using -mno-abicalls.

Reviewers: atanasyan, slthakur

Differential Revision: https://reviews.llvm.org/D35548

llvm-svn: 308431
2017-07-19 10:38:03 +00:00
Brad Smith 733fe193d3 Enable TLS support on OpenBSD, but default to the emulatated TLS model.
llvm-svn: 308155
2017-07-17 00:49:31 +00:00
Paul Robinson d23f2a8ad5 [PS4] Disable LTO unit features under ThinLTO, like for Darwin.
llvm-svn: 307964
2017-07-13 21:25:47 +00:00
Gheorghe-Teodor Bercea f0f29608d0 [OpenMP] Extend CLANG target options with device offloading kind.
Summary: Pass the type of the device offloading when building the tool chain for a particular target architecture. This is required when supporting multiple tool chains that target a single device type. In our particular use case, the OpenMP and CUDA tool chains will use the same ```addClangTargetOptions ``` method. This enables the reuse of common options and ensures control over options only supported by a particular tool chain.

Reviewers: arpith-jacob, caomhin, carlo.bertolli, ABataev, jlebar, hfinkel, tstellar, Hahnfeld

Reviewed By: hfinkel

Subscribers: jgravelle-google, aheejin, rengolin, jfb, dschuff, sbc100, cfe-commits

Differential Revision: https://reviews.llvm.org/D29647

llvm-svn: 307272
2017-07-06 16:22:21 +00:00
Joerg Sonnenberger c91996817f Add an option group for deprecated warnings. Add the removed
-fslp-vectorize-aggressive and -fno-slp-vectorize-aggressive flags back
under this group and test for the warning. Document the future removal
in the ReleaseNotes.

Differential Revision: https://reviews.llvm.org/D34926

llvm-svn: 306965
2017-07-01 21:36:21 +00:00
Brian Gesiak 562eab97ea Un-revert "[Driver] Add -fdiagnostics-hotness-threshold"
Summary:
Un-revert https://reviews.llvm.org/D34868, but with a slight tweak to the
documentation to fix an error -- I had used the wrong syntax for a link.

llvm-svn: 306948
2017-07-01 05:45:26 +00:00
Brian Gesiak 55e9c111b4 Revert "[Driver] Add -fdiagnostics-hotness-threshold"
Summary:
The commit caused a documentation breakage.

llvm-svn: 306946
2017-07-01 04:54:53 +00:00
Brian Gesiak dc6fa5d1f6 [Driver] Add -fdiagnostics-hotness-threshold
Summary:
Depends on https://reviews.llvm.org/D34867.

Add a Clang frontend option to enable optimization remark hotness
thresholds, which were added to LLVM in https://reviews.llvm.org/D34867.
This prevents diagnostics that do not meet a minimum hotness
threshold from being output. When generating optimization remarks for large
codebases with a ton of cold code paths, this option can be used
to limit the optimization remark output at a reasonable size.
Discussion of this change can be read here:
http://lists.llvm.org/pipermail/llvm-dev/2017-June/114377.html

Reviewers: anemet, davidxl, hfinkel

Reviewed By: anemet

Subscribers: fhahn, cfe-commits

Differential Revision: https://reviews.llvm.org/D34868

llvm-svn: 306945
2017-07-01 04:44:38 +00:00
Daniel Jasper d27538a70e Fix heap use after free introduced by r306769.
llvm-svn: 306804
2017-06-30 08:02:37 +00:00
Chandler Carruth b853ef9947 Remove Clang support for '-fvectorize-slp-aggressive' which used LLVM's
basic block vectorizer. This vectorizer has had no known users for many,
many years and is completely surpassed by the normal
'-fvectorize-slp'-controlled SLP vectorizer in LLVM.

Hal proposed this back in 2014 to no objections:
http://lists.llvm.org/pipermail/llvm-dev/2014-November/079091.html

While this patch completely removes the flag, Joerg is working on
a patch that will add it back in a way that warns users and ignores the
flag in a clear and well factored way (so that we can keep doing this
going forward).

Differential Revision: https://reviews.llvm.org/D34846

llvm-svn: 306786
2017-06-30 05:13:31 +00:00
Eric Christopher 53b2cb77cc Unified logic for computing target ABI in backend and front end by moving this common code to Support/TargetParser.
Modeled Triple::GNU after front end code (aapcs abi) and updated tests that expect apcs abi.

Patch by Ana Pazos!

llvm-svn: 306769
2017-06-30 00:03:56 +00:00
Gheorghe-Teodor Bercea 3addb7d850 [OpenMP] Pass -fopenmp-is-device to preprocessing and machine specific code generation stages
Summary: The preprocessing and code generation and optimization stages of the compiler are also passed the "-fopenmp-is-device" flag. This is used to trigger machine specific preprocessing and code generation when performing device offloading to an NVIDIA GPU via OpenMP directives.

Reviewers: arpith-jacob, caomhin, carlo.bertolli, Hahnfeld, hfinkel, tstellar

Reviewed By: Hahnfeld

Subscribers: Hahnfeld, rengolin

Differential Revision: https://reviews.llvm.org/D29645

llvm-svn: 306691
2017-06-29 15:59:19 +00:00
Gheorghe-Teodor Bercea 59d7b77b16 [OpenMP] Add support for auxiliary triple specification
Summary: Device offloading requires the specification of an additional flag containing the triple of the //other// architecture the code is being compiled on if such an architecture exists. If compiling for the host, the auxiliary triple flag will contain the triple describing the device and vice versa.

Reviewers: arpith-jacob, sfantao, caomhin, carlo.bertolli, ABataev, Hahnfeld, jlebar, hfinkel, tstellar

Reviewed By: Hahnfeld

Subscribers: rengolin, cfe-commits

Differential Revision: https://reviews.llvm.org/D29339

llvm-svn: 306689
2017-06-29 15:49:03 +00:00
Vedant Kumar 99b312994c Remove a redundant call to ArgList::hasFlag. NFC.
llvm-svn: 306497
2017-06-28 01:56:07 +00:00
Saleem Abdulrasool d064e91ece Revert "Revert r305164/5/7."
Restore the `-gz` option to the driver with some minor tweaks to handle
the additional case for `-Wa,--compress-debug-sections`.

This intends to make the compression of the debug information
controllable from the driver.  The following is the behaviour:

  -gz           enable compression (ambiguous for format, will default to zlib-gnu)
  -gz=none      disable compression
  -gz=zlib-gnu  enable compression (deprecated GNU style zlib compression)
  -gz=zlib      enable compression (zlib based compression)

Although -Wa,-compress-debug-sections works, it should be discouraged
when using the driver to invoke the assembler.  However, we permit the
assembler to accept the GNU as style argument --compress-debug-sections
to maintain compatibility.

Note, -gz/-gz= does *NOT* imply -g.  That is, you need to additionally
specific -g for debug information to be generated.

llvm-svn: 306115
2017-06-23 15:34:16 +00:00
Yuka Takahashi cdb5348738 Fix a bug that warnings generated with -M or -MM flags
This is a patch for bug: https://bugs.llvm.org/show_bug.cgi?id=6817

Warnings should not be emitted with -M and -MM flags, because this mode
is only used for generate MakeFiles.

llvm-svn: 305561
2017-06-16 16:01:13 +00:00
Daniel Jasper cdc4408bbf Revert r305164/5/7.
cc1as does not currently access the "--" version of this flag. At the
very least this needs to be fixed and proper test cases need to be
added.

Simple reproducer:
clang -Wa,--compress-debug-sections /tmp/test.cc

Result:
error: unknown argument: '--compress-debug-sections'

llvm-svn: 305182
2017-06-12 08:08:18 +00:00
Saleem Abdulrasool 617034da8f test: attempt to repair build bots
Split the no-ias tests and give them a target to ensure that they go
down the GNU toolchain path.  Adjust the no compression support tests.

llvm-svn: 305167
2017-06-11 18:55:17 +00:00
Saleem Abdulrasool 7289ba9165 Driver: add support for `-gz` and `-gz=`
These options control the behaviour of the compression of debug info
sections on ELF targets.  Our behaviour slightly diverges from the
behaviour of GCC.  `-gz` maps to the `-compress-debug-sections` rather
than `-compress-debug-sections=zlib` or
`-compress-debug-sections=zlib-gnu`.  This small divergence allows us to
be compatible across versions of binutils (=zlib support was introduced
in 2.26, while earlier versions only support =zlib-gnu).  This also
allows users to not have to worry about the version of the assembler
they may be using if they are not using the IAS.  Previously, users
would have had to go through the internal option
`-compress-debug-sectionss` and pass that through to the assembler,
which is no longer needed.

llvm-svn: 305165
2017-06-11 17:49:23 +00:00
Saleem Abdulrasool d3ba0ac2a5 Driver: pass along [-]-[no]compress-debug-sections unfiltered
Rather than validating the flags, pass them through without any
validation.  Arguments passed via -Wa or -Xassembler are passed directly
to the assembler without validation.  The validation was previously
required since we did not provide proper driver level support for
controlling the debug compression on ELF targets.  A subsequent change
will add support for the `-gz` and `-gz=` flags which provide proper
driver level control of the ELF compressed debug sections.

llvm-svn: 305164
2017-06-11 17:49:17 +00:00
Richard Smith 86a3ef5b03 Add -frewrite-imports flag.
If specified, when preprocessing, the contents of imported .pcm files will be
included in preprocessed output. The resulting preprocessed file can then be
compiled standalone without the module sources or .pcm files.

llvm-svn: 305116
2017-06-09 21:24:02 +00:00
Reid Kleckner ca77dd591e [clang-cl] Implement /diagnostic: flag
This flag has three possible values: caret, column, and classic.

"caret" corresponds to clang's default mode, "column" removes the caret
and code snippet, and "classic" emits nothing.

Documentation is here:
https://docs.microsoft.com/en-us/cpp/build/reference/diagnostics-compiler-diagnostic-options

Implements the last part of PR33237

llvm-svn: 304316
2017-05-31 17:37:49 +00:00
Reid Kleckner 6344f10fa9 Fix incorrect spelling of calling conv flag and add -Wno-msvc-not-found to test
llvm-svn: 304308
2017-05-31 15:50:35 +00:00
Reid Kleckner 4b2f3269ab [clang-cl] Improve default calling convention flag handling
Ignore default CC flags that don't make sense for the target arch. This
is consistent with MSVC.

Addresses part of PR33237

llvm-svn: 304305
2017-05-31 15:39:28 +00:00
David Blaikie 9bb296cb05 Enable -fno-split-dwarf-inlining even when -gsplit-dwarf isn't specified.
Since -gsplit-dwarf is specified on a backend compile (in ThinLTO
parlance) it isn't passed during the frontend compile (because no ELF
object/dwo file is produced then), yet the -fno-split-dwarf-inlining
value needs to be encoded in the LLVM DebugInfo metadata to have
effect...

So let it be specified & it'll be silently ignored if -gsplit-dwarf
isn't used in the end, otherwise it'll be used on a per-cu basis
depending on where it's specified in the frontend compile actions.

llvm-svn: 301684
2017-04-28 20:50:25 +00:00
David Blaikie 8150355498 Move Split DWARF handling to an MC option/command line argument rather than using metadata
Since Split DWARF needs to name the actual .dwo file that is generated,
it can't be known at the time the llvm::Module is produced as it may be
merged with other Modules before the object is generated and that object
may be generated with any name.

By passing the Split DWARF file name when LLVM is producing object code
the .dwo file name in the object file can match correctly.

The support for Split DWARF for implicit modules remains the same -
using metadata to store the dwo name and dwo id so that potentially
multiple skeleton CUs referring to different dwo files can be generated
from one llvm::Module.

llvm-svn: 301063
2017-04-21 23:35:36 +00:00
Alex Lorenz 1be800c511 Add support for editor placeholders to Clang
This commit teaches Clang to recognize editor placeholders that are produced
when an IDE like Xcode inserts a code-completion result that includes a
placeholder. Now when the lexer sees a placeholder token, it emits an
'editor placeholder in source file' error and creates an identifier token
that represents the placeholder. The parser/sema can now recognize the
placeholders and can suppress the diagnostics related to the placeholders. This
ensures that live issues in an IDE like Xcode won't get spurious diagnostics
related to placeholders.

This commit also adds a new compiler option named '-fallow-editor-placeholders'
that silences the 'editor placeholder in source file' error. This is useful
for an IDE like Xcode as we don't want to display those errors in live issues.

rdar://31581400

Differential Revision: https://reviews.llvm.org/D32081

llvm-svn: 300667
2017-04-19 08:58:56 +00:00
Richard Smith 34e485f922 [modules-ts] Fold together -x c++ and -x c++-module at -cc1 level.
The driver needs to know whether it's building a module interface or
implementation unit because it affects which outputs it produces and how it
builds the command pipeline. But the frontend doesn't need to know and should
not care: all it needs to know is what action it is being asked to perform on
the input.

(This is in preparation for permitting -emit-obj to be used on a module
interface unit to produce object code without going via a "full" PCM file.)

llvm-svn: 300611
2017-04-18 21:55:37 +00:00
Oliver Stannard 692dc54b0d [ARM] Add hardware build attributes in assembler
This passes an option to the ARM assembly parser to emit build
attributes for the hardware selected by command line options, when
assembling an assembly file.

This is not enabled for C/C++, as this would result in duplicate build
attribute directives being emitted in each inline assembly block, when
emitting assembly.

This also adds an option to allow disabling this behaviour for assembly
files, for users who were relying on the old behaviour.

Differential revision: https://reviews.llvm.org/D31813

llvm-svn: 300550
2017-04-18 13:21:05 +00:00
Dean Michael Berris 835832d37a [XRay] Add -fxray-{always,never}-instrument= flags to clang
Summary:
The -fxray-always-instrument= and -fxray-never-instrument= flags take
filenames that are used to imbue the XRay instrumentation attributes
using a whitelist mechanism (similar to the sanitizer special cases
list). We use the same syntax and semantics as the sanitizer blacklists
files in the implementation.

As implemented, we respect the attributes that are already defined in
the source file (i.e. those that have the
[[clang::xray_{always,never}_instrument]] attributes) before applying
the always/never instrument lists.

Reviewers: rsmith, chandlerc

Subscribers: jfb, mgorny, cfe-commits

Differential Revision: https://reviews.llvm.org/D30388

llvm-svn: 299041
2017-03-30 00:29:36 +00:00
Eric Christopher ca32517c3a Add the -grecord-gcc-switches option and pass the flags down on the compile unit.
Patch by Zhizhou Yang

llvm-svn: 299037
2017-03-29 23:34:20 +00:00
Eric Christopher 758aad76d8 Remove the -faltivec alias option and replace it with -maltivec everywhere.
The alias was only ever used on darwin and had some issues there,
and isn't used in practice much. Also fixes a problem with -mno-altivec
not turning off -maltivec.

Also add a diagnostic for faltivec/fno-altivec that directs users to use
maltivec options and include the altivec.h file explicitly.

llvm-svn: 298449
2017-03-21 22:06:18 +00:00
Dehao Chen ea4b78fcb3 Add support for -fno-auto-profile and -fno-profile-sample-use
Summary: We need to be able to disable samplepgo for specific files by supporting -fno-auto-profile and -fno-profile-sample-use

Reviewers: davidxl, dnovillo, echristo

Reviewed By: echristo

Subscribers: echristo, cfe-commits

Differential Revision: https://reviews.llvm.org/D31213

llvm-svn: 298446
2017-03-21 21:40:53 +00:00
Guansong Zhang 4747cf5677 enable -save-temps with -finclude-defult-header
Currently the two flags can not work together.

To illustrate the issue, we can have an one line file a.cl contains only an empty function

cat a.cl

void test(){}

Then use

clang -v -save-temps -x cl -Xclang -cl-std=CL2.0 -Xclang -finclude-default-header -target amdgcn -S -c a.cl

we will get redefinition errors for various things.

The reason is that the -finclude-default-header flag is not meant to be on cc1 command other than the preprocessor.

The fix is modeled after the code just below the change to filter the -finclude-default-header flag out when we are not in the preprocess phase.

Differential Revision: https://reviews.llvm.org/D30743

llvm-svn: 297890
2017-03-15 20:57:11 +00:00
John Brawn 5c4c61184a [Driver] Restructure handling of -ffast-math and similar options
The way -ffast-math and the various related options to tweak floating-point
handling are handled is inflexible and rather confusing. This patch restructures
things so that we go through the options adjusting our idea of what's enabled as
we go, instead of trying to figure each individual thing out by working
backwards from the end, as this makes the behaviour of each individual option
more clear.

Doing it this way also means we get gcc-compatible behaviour for when the
__FAST_MATH__ and __FINITE_MATH_ONLY__ macros are defined, as they should depend
on the final set of features that are enabled and not just on -ffast-math and
-ffinite-math-only specifically.

Differential Revision: http://reviews.llvm.org/D30582

llvm-svn: 297837
2017-03-15 14:03:32 +00:00
David L. Jones f561abab56 [Driver] Consolidate tools and toolchains by target platform. (NFC)
Summary:
(This is a move-only refactoring patch. There are no functionality changes.)

This patch splits apart the Clang driver's tool and toolchain implementation
files. Each target platform toolchain is moved to its own file, along with the
closest-related tools. Each target platform toolchain has separate headers and
implementation files, so the hierarchy of classes is unchanged.

There are some remaining shared free functions, mostly from Tools.cpp. Several
of these move to their own architecture-specific files, similar to r296056. Some
of them are only used by a single target platform; since the tools and
toolchains are now together, some helpers now live in a platform-specific file.
The balance are helpers related to manipulating argument lists, so they are now
in a new file pair, CommonArgs.h and .cpp.

I've tried to cluster the code logically, which is fairly straightforward for
most of the target platforms and shared architectures. I think I've made
reasonable choices for these, as well as the various shared helpers; but of
course, I'm happy to hear feedback in the review.

There are some particular things I don't like about this patch, but haven't been
able to find a better overall solution. The first is the proliferation of files:
there are several files that are tiny because the toolchain is not very
different from its base (usually the Gnu tools/toolchain). I think this is
mostly a reflection of the true complexity, though, so it may not be "fixable"
in any reasonable sense. The second thing I don't like are the includes like
"../Something.h". I've avoided this largely by clustering into the current file
structure. However, a few of these includes remain, and in those cases it
doesn't make sense to me to sink an existing file any deeper.

Reviewers: rsmith, mehdi_amini, compnerd, rnk, javed.absar

Subscribers: emaste, jfb, danalbert, srhines, dschuff, jyknight, nemanjai, nhaehnle, mgorny, cfe-commits

Differential Revision: https://reviews.llvm.org/D30372

llvm-svn: 297250
2017-03-08 01:02:16 +00:00