64 Commits

Author SHA1 Message Date
Michael Kruse
77581e2751 Reapply "[Flang] Remove FLANG_INCLUDE_RUNTIME (#124126)"
This reverts commit 27539c3f903be26c487703943d3c27d45d4542b2. Retry
with new buildbot configuration after master restart.

Original message:

Remove the FLANG_INCLUDE_RUNTIME option which was replaced by
LLVM_ENABLE_RUNTIMES=flang-rt.

The FLANG_INCLUDE_RUNTIME option was added in #122336 which disables the
non-runtimes build instructions for the Flang runtime so they do not
conflict with the LLVM_ENABLE_RUNTIMES=flang-rt option added in #110217.
In order to not maintain multiple build instructions for the same thing,
this PR completely removes the old build instructions (effectively
forcing FLANG_INCLUDE_RUNTIME=OFF).

As per discussion in
https://discourse.llvm.org/t/buildbot-changes-with-llvm-enable-runtimes-flang-rt/83571/2
we now implicitly add LLVM_ENABLE_RUNTIMES=flang-rt whenever Flang is
compiled in a bootstrapping (non-standalone) build. Because it is
possible to build Flang-RT separately, this behavior can be disabled
using `-DFLANG_ENABLE_FLANG_RT=OFF`. Also see the discussion an
implicitly adding runtimes/projects in #123964.
2025-04-30 12:32:49 +02:00
Alexander Richardson
e4332e4706
[flang] Fix build when examples are disabled
Without this change I get a build error due to the missing Bye target
when I configure my build with -DLLVM_INCLUDE_EXAMPLES=OFF.
This check for LLVM_BUILD_EXAMPLES matches the checks in llvm and lld.

Reviewed By: mgorny

Pull Request: https://github.com/llvm/llvm-project/pull/137908
2025-04-29 22:42:12 -07:00
Michael Kruse
27539c3f90 Revert "[Flang] Remove FLANG_INCLUDE_RUNTIME (#124126)"
The production buildbot master apparently has not yet been restarted
since https://github.com/llvm/llvm-zorg/pull/393 landed.

This reverts commit 96d1baedefc3581b53bc4389bb171760bec6f191.
2025-03-26 19:02:13 +01:00
Michael Kruse
96d1baedef
[Flang] Remove FLANG_INCLUDE_RUNTIME (#124126)
Remove the FLANG_INCLUDE_RUNTIME option which was replaced by
LLVM_ENABLE_RUNTIMES=flang-rt.

The FLANG_INCLUDE_RUNTIME option was added in #122336 which disables the
non-runtimes build instructions for the Flang runtime so they do not
conflict with the LLVM_ENABLE_RUNTIMES=flang-rt option added in #110217.
In order to not maintain multiple build instructions for the same thing,
this PR completely removes the old build instructions (effectively
forcing FLANG_INCLUDE_RUNTIME=OFF).

As per discussion in
https://discourse.llvm.org/t/buildbot-changes-with-llvm-enable-runtimes-flang-rt/83571/2
we now implicitly add LLVM_ENABLE_RUNTIMES=flang-rt whenever Flang is
compiled in a bootstrapping (non-standalone) build. Because it is
possible to build Flang-RT separately, this behavior can be disabled
using `-DFLANG_ENABLE_FLANG_RT=OFF`. Also see the discussion an
implicitly adding runtimes/projects in #123964.
2025-03-26 18:50:41 +01:00
Michael Kruse
bddf24ddbd
[Flang] Add omp_lib dependency to check-flang (#130975)
With `LLVM_ENABLE_RUNTIMES=openmp`, flang enables the OpenMP regression
tests, but `check-flang` was not ensuring that the OpenMP requirements
are built first. Fix by adding a `libomp-mod` to `flang-test-depends`.

Adding `libomp-mod` to extra_targets is necessary because there is no
target from openmp/ that is reachable from the parent
bootstrapping-build. `ninja openmp` fails because openmp/ has no
`openmp` target. `check-openmp` would also run the OpenMP tests and does
not even build `omp_lib.mod`. `runtimes` would build all the runtimes,
not just OpenMP.

Also fix the misleading CMake configure status messages that suggest the
only way to build omp_lib.mod/.h is `LLVM_ENABLE_PROJECTS=openmp`.
2025-03-14 09:24:28 +01:00
Michał Górny
c30a7f4594
[flang] Fix standalone builds against installed MLIR (#126387)
1. Add a new `MLIR_DEPS` argument group to `flang_add_library()`, and
move MLIR-specific dependencies to that group. These dependencies are
added as usual in regular builds, and are skipped in standalone builds,
since MLIR targets are not visible there (and were already built and
installed).
2. Fix the value of `MLIR_MAIN_SRC_DIR` to refer to the current source
directory rather than the directory written into MLIR CMake files. The
latter refers to the directory used to build the MLIR package, and is no
longer valid.
3. Fix non-dylib friendly linking of `LLVMTargetParser` in `Optimizer`
unittests.

With these changes, I can successfully run Flang's regression tests.
2025-02-15 07:15:00 +00:00
Michael Kruse
5c8c2b3db5
[Flang] Rename libFortranRuntime.a to libflang_rt.runtime.a (#122341)
Following the conclusion of the
[RFC](https://discourse.llvm.org/t/rfc-names-for-flang-rt-libraries/84321),
rename Flang's runtime libraries as follows:

 * libFortranRuntime.(a|so) to libflang_rt.runtime.(a|so)
 * libFortranFloat128Math.a to libflang_rt.quadmath.a
* libCufRuntime_cuda_${CUDAToolkit_VERSION_MAJOR}.(a|so) to
libflang_rt.cuda_${CUDAToolkit_VERSION_MAJOR}.(a|so)

This follows the same naming scheme as Compiler-RT libraries
(`libclang_rt.${component}.(a|so)`). It provides some consistency
between Flang's runtime libraries for current and potential future
library components.
2025-02-08 18:02:54 +01:00
Michael Kruse
e6e8ac59ba
[Flang] Optionally do not compile the runtime in-tree (#122336)
Introduce the CMake switch FLANG_INCLUDE_RUNTIME. When set to off, do
not add build instructions for the runtime.

This is required for Flang-RT (#110217) and the current runtime CMake
code to co-exist. When using `LLVM_ENABLE_RUNTIME=flang-rt`, the in-tree
build instructions are in conflict and must be disabled.
2025-02-08 01:06:27 +01:00
Brad Richardson
06eb10dadf
[flang][driver] rename flang-new to flang (#110023)
This does a global rename from `flang-new` to `flang`. I also
removed/changed any TODOs that I found related to making this change.

---------

Co-authored-by: H. Vetinari <h.vetinari@gmx.com>
Co-authored-by: Andrzej Warzynski <andrzej.warzynski@arm.com>
2024-10-10 09:26:04 +01:00
Tom Eccles
3b19e480c0
[flang] Warn when F128 is unsupported (#102147) (#106957)
This generates `warning: REAL(KIND=16) is not an enabled type for this
target` if that type is used in a build not correctly configured to
support this type. Uses of `selected_real_kind(30)` return -1.

Relanding #102147 because the test errors turned out to be specific to a
downstream configuration.
2024-09-05 15:59:36 +01:00
Tom Eccles
8ae877a089
Revert "[flang] Warn when F128 is unsupported" (#106561)
Reverts llvm/llvm-project#102147

It seems some systems which should support F128 are wrongly detected as
not supporting.

This might be due to checking `LDBL_MANT_DIG` instead of
`__LDBL_MANT_DIG__`. I will investigate.
2024-08-29 15:37:59 +01:00
Tom Eccles
114ff99e93
[flang] Warn when F128 is unsupported (#102147)
This generates `warning: REAL(KIND=16) is not an enabled type for this
target` if that type is used in a build not correctly configured to
support this type. Uses of `selected_real_kind(30)` return -1.
2024-08-28 16:33:39 +01:00
Michael Kruse
76e7c8f4aa
[flang] Revise IDE folder structure (#89745)
Update the folder titles for targets in the monorepository that have not
seen taken care of for some time. These are the folders that targets are
organized in Visual Studio and XCode (`set_property(TARGET <target>
PROPERTY FOLDER "<title>")`) when using the respective CMake's IDE
generator.

 * Ensure that every target is in a folder
 * Use a folder hierarchy with each LLVM subproject as a top-level folder
 * Use consistent folder names between subprojects
 * When using target-creating functions from AddLLVM.cmake, automatically
deduce the folder. This reduces the number of
`set_property`/`set_target_property`, but are still necessary when
`add_custom_target`, `add_executable`, `add_library`, etc. are used. A
LLVM_SUBPROJECT_TITLE definition is used for that in each subproject's
root CMakeLists.txt.
2024-05-25 17:24:58 +02:00
David Truby
8d5386669e
[flang] Generate main only when a Fortran program statement is present (#89938)
This patch changes the behaviour for flang to only create and link to a
`main` entry point when the Fortran code has a program statement in it.

This means that flang-new can be used to link even when the program is
a mixed C/Fortran code with `main` present in C and no entry point
present in Fortran.

This also removes the `-fno-fortran-main` flag as this no longer has any
functionality.
2024-04-29 14:16:25 +01:00
David Spickett
ffc67bb360 Revert "[Flang] [FlangRT] Introduce FlangRT project as solution to Flang's runtime LLVM integration"
This reverts commit 6403287eff71a3d6f6c862346d6ed3f0f000eb70.

This is failing on all but 1 of Linaro's flang builders.
CMake Error at /home/tcwg-buildbot/worker/clang-aarch64-full-2stage/llvm/flang-rt/unittests/CMakeLists.txt:37 (message):
  Target llvm_gtest not found.
2023-10-02 09:02:05 +00:00
Paul Scoropan
6403287eff [Flang] [FlangRT] Introduce FlangRT project as solution to Flang's runtime LLVM integration
See discourse thread https://discourse.llvm.org/t/rfc-support-cmake-option-to-control-link-type-built-for-flang-runtime-libraries/71602/18 for full details.

Flang-rt is the new library target for the flang runtime libraries. It builds the Flang-rt library (which contains the sources of FortranRuntime and FortranDecimal) and the Fortran_main library. See documentation in this patch for detailed description (flang-rt/docs/GettingStarted.md).

This patch aims to:
- integrate Flang's runtime into existing llvm infrasturcture so that Flang's runtime can be built similarly to other runtimes via the runtimes target or via the llvm target as an enabled runtime
- decouple the FortranDecimal library sources that were used by both compiler and runtime so that different build configurations can be applied for compiler vs runtime
- add support for running flang-rt testsuites, which were created by migrating relevant tests from `flang/test` and `flang/unittest` to `flang-rt/test` and `flang-rt/unittest`, using a new `check-flang-rt` target.
- provide documentation on how to build and use the new FlangRT runtime

Reviewed By: DanielCChen

Differential Revision: https://reviews.llvm.org/D154869
2023-09-30 12:35:33 -04:00
Andrzej Warzynski
e5d98c15cb Revert "[flang][driver] Allow main program to be in an archive"
This reverts commit 876df74dd47196a9ca3b4fff21ffb5441491a0a0.

My understanding (based on https://reviews.llvm.org/D149429) is that
this patch has caused all of Flang's buildbots to fail. I'm not really
able to verify 100% as the buildbot UI is incredibly slow ATM. I am
reverting either way so that we can discuss the right solution offline.
2023-04-28 09:39:27 +01:00
Shao-Ce SUN
876df74dd4 [flang][driver] Allow main program to be in an archive
Add --undefined=_QQmain to the link line, so that a Fortran main program
will be included in the link job even if it is in an archive (unless we
are building a shared object). For now, this is only applied to the Gnu
toolchain.

We also add a section on the linker invocation to docs/FlangDriver.md.

The new tests require llvm-ar to construct an archive we can include in
the link job. This is a new dependency for flang/test (which already
depends on similar tools such as llvm-objdump).

See discussions in
https://github.com/llvm/llvm-project/issues/54787
which this patch fixes.

Reviewed By: awarzynski

Differential Revision: https://reviews.llvm.org/D134821
2023-04-28 09:53:25 +08:00
Ethan Luis McDonough
00d0749f92
[flang] Feature list plugin
Plugin that counts the number of times each tree node occurs in a given program.  Used for test coverage.

Updated to fix build issues.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D143704
2023-04-24 23:41:32 -05:00
Ethan Luis McDonough
22293a3d85
Revert "[flang] Feature list plugin" due to failing build
This reverts commit 823ddba1b325f30fc3fb2e9d695c211b856a4d5d.
2023-03-22 15:49:50 -05:00
Ethan Luis McDonough
823ddba1b3
[flang] Feature list plugin
Plugin that counts the number of times each tree node occurs in a given program.  Used for test coverage.

Updated to fix build issues.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D143704
2023-03-22 01:27:55 -05:00
David Spickett
0b958fe411 [flang] Make tests depend on llvm-readobj not llvm-readelf
d4320cb2a5ef1680e519fa6b7cfd3a2f88cfed16 fixed a regular build
issue by making the flang tests depend on llvm-readelf.

Turns out llvm-readelf is a symlink to llvm-readobj and for
whatever reason, doesn't have the right exports at the moment
to be picked up in a standalone build.

https://lab.llvm.org/buildbot/#/builders/175/builds/26448

Maybe we should fix that, but for now, just require llvm-readobj
instead.
2023-03-16 16:39:22 +00:00
Shao-Ce SUN
d4320cb2a5 [flang] Fix build error caused by missing llvm-readelf
Fix build error in D145883. Thanks @awarzynski!

Reviewed By: awarzynski

Differential Revision: https://reviews.llvm.org/D146204
2023-03-16 17:47:33 +08:00
Slava Zakharin
1c5d121440 [flang] Handle Flang examples consistently with LLVM.
Without this change the problem is that flangOmpReport and
flangPrintFunctionNames libraries are not built under 'all',
but they are imported targets via LLVMExports.cmake so that
any out-of-tree build that configures upon LLVM+Flang package
will get this CMake error:
```
  The imported target "flangPrintFunctionNames" references the file

     ".../lib/flangPrintFunctionNames.so"

  but this file does not exist.
```

flang-aarch64-out-of-tree buildbot (https://lab.llvm.org/buildbot/#/builders/175)
does not catch this issue, because it does not enable Flang on the first stage.

This change gets rid of FLANG_BUILD_EXAMPLES in favor of LLVM_BUILD_EXAMPLES
and uses available LLVM CMake macros to add example executables/libraries.

Differential Revision: https://reviews.llvm.org/D145992
2023-03-14 13:08:43 -07:00
Usman Nadeem
54dc764db7 [Flang][Test] Add support to change the default target triple for tests
In this patch I added support to change the default target triple used
by flang tests using the cmake variable: FLANG_TEST_TARGET_TRIPLE.

This functionality is implemented using the LLVM_TARGET_TRIPLE_ENV
variable, so that must be defined as well.

An example use:
`-DLLVM_TARGET_TRIPLE_ENV="LLVM_TARGET_TRIPLE_ENV" -DFLANG_TEST_TARGET_TRIPLE="aarch64-linux-gnu"`

Differential revision: https://reviews.llvm.org/D138530

Change-Id: I38e4a46a65109d415a9b72c8a0bf8a955e937280
2022-11-28 16:02:22 -08:00
Usman Nadeem
d34dce25d9 [Flang] Allow registering plugin extensions with the pass builder
Pass plugins are compiled and linked dynamically by default. Setting
`LLVM_${NAME}_LINK_INTO_TOOLS` to `ON` turns the project into a
statically linked extension. Projects like Polly can be used this way by
adding `-DLLVM_POLLY_LINK_INTO_TOOLS=ON` to the `cmake` command.

The changes in this patch makes the PassBuilder in Flang aware of
statically linked pass plugins, see the documentation for more details:
https://github.com/llvm/llvm-project/blob/main/llvm/docs/WritingAnLLVMNewPMPass.rst#id21

Differential Revision: https://reviews.llvm.org/D137673

Change-Id: Id1aa501dcb4821d0ec779f375cc8e8d6b0b92fce
2022-11-10 14:16:15 -08:00
Tarun Prabhu
c3821b8d2a [flang] Add -fpass-plugin option to flang
This patch adds the -fpass-plugin option to flang which dynamically loads LLVM
passes from the shared object passed as the argument to the flag. The behavior
of the option is designed to replicate that of the same option in clang and
thus has the same capabilities and limitations.

Features:

  Multiple instances of -fpass-plugin=path-to-file can be specified and each
  of the files will be loaded in that order.

  The flag can be passed to both flang-new and flang-new -fc1.

  The flag will be listed when the -help flag is passed to both flang-new and
  flang-new -fc1. It will also be listed when the --help-hidden flag is passed.

Limitations:

  Dynamically loaded plugins are not supported in clang on Windows and are not
  supported in flang either.

Addenda:

  Some minor stylistic changes are made in the files that were modified to
  enable this functionality. Those changes make the naming of functions more
  consistent, but do not change any functionality that is not directly
  related to enabling -fpass-plugin.

Differential Revision: https://reviews.llvm.org/D129156
2022-11-10 08:03:46 -07:00
Renaud-K
ba65584d15 Alias Analysis infra in Flang
Differential revision: https://reviews.llvm.org/D136889
2022-11-04 13:39:00 -07:00
Andrzej Warzynski
97a32d3e43 [flang][driver] Add support for generating executables
This patch adds 2 missing items required for `flang-new` to be able to
generate executables:

1. The Fortran_main runtime library, which implements the main entry
   point into Fortran's `PROGRAM` in Flang,

2. Extra linker flags to include Fortran runtime libraries (e.g.
   Fortran_main).

Fortran_main is the bridge between object files generated by Flang and
the C runtime that takes care of program set-up at system-level. For
every Fortran `PROGRAM`, Flang generates the `_QQmain` function.
Fortran_main implements the C `main` function that simply calls
`_QQmain`.

Additionally, "<driver-path>/../lib" directory is added to the list of
search directories for libraries. This is where the required runtime
libraries are currently located. Note that this the case for the build
directory. We haven't considered installation directories/targets yet.

With this change, you can generate an executable that will print `hello,
world!` as follows:

```bash
$ cat hello.f95
PROGRAM HELLO
  write(*, *) "hello, world!"
END PROGRAM HELLO
$ flang-new -flang-experimental-exec hello.f95
./a.out
hello, world!
```

NOTE 1: Fortran_main has to be a static library at all times. It invokes
`_QQmain`, which is the main entry point generated by Flang for the
given input file (you can check this with `flang-new -S hello.f95 -o - |
grep "Qmain"`). This means that Fortran_main has an unresolved
dependency at build time. The linker will allow this for a static
library. However, if Fortran_main was a shared object, then the linker
will produce an error: `undefined symbol: `_QQmain`.

NOTE 2: When Fortran runtime libraries are generated as shared libraries
(excluding Fortran_main, which is always static), you will need to
tell the dynamic linker (by e.g. tweaking LD_LIBRARY_PATH) where to look
for them when invoking the executables. For example:
```bash
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:<flang-build-dir>/lib/ ./a.out
```

NOTE 3: This feature is considered experimental and currently guarded
with a flag: `-flang-experimental-exec`.

Differential Revision: https://reviews.llvm.org/D122008

[1] https://github.com/flang-compiler/f18-llvm-project

CREDITS: Fortran_main was originally written by Eric Schweitz, Jean
Perier, Peter Klausler and Steve Scalpone in the fir-dev` branch in [1].

Co-authored-by: Eric Schweitz <eschweitz@nvidia.com>
Co-authored-by: Peter Klausler <pklausler@nvidia.com>
Co-authored-by: Jean Perier <jperier@nvidia.com>
Co-authored-by: Steve Scalpone <sscalpone@nvidia.com
2022-04-25 12:00:23 +00:00
Andrzej Warzynski
dd56939a4b [flang][driver] Add support for generating LLVM bytecode files
Support for generating LLVM BC files is added in Flang's compiler and
frontend drivers. This requires the `BitcodeWriterPass` pass to be run
on the input LLVM IR module and is implemented as a dedicated frontend
aciton. The new functionality as seen by the user (compiler driver):
```
flang-new -c -emit-llvm file.90
```
or (frontend driver):
```
flang-new -fc1 -emit-llvm-bc file.f90
```

The new behaviour is consistent with `clang` and `clang -cc1`.

Differential Revision: https://reviews.llvm.org/D123211
2022-04-13 10:19:56 +00:00
Valentin Clement
b38e78cc44
[flang][NFC] Add module lowering tests
This patch adds test for the lowering of Fortran modules.

This patch is part of the upstreaming effort from fir-dev branch.

Reviewed By: PeteSteinfeld

Differential Revision: https://reviews.llvm.org/D122317

Co-authored-by: Jean Perier <jperier@nvidia.com>
Co-authored-by: Eric Schweitz <eschweitz@nvidia.com>
2022-03-23 17:51:09 +01:00
Andrzej Warzynski
38101b4e95 [flang][driver] Add support for -S and implement -c/-emit-obj
This patch adds support for:
  * `-S` in Flang's compiler and frontend drivers,
and implements:
  * `-emit-obj` in Flang's frontend driver and `-c` in Flang's compiler
    driver (this is consistent with Clang).
(these options were already available before, but only as placeholders).
The semantics of these options in Clang and Flang are identical.

The `EmitObjAction` frontend action is renamed as `BackendAction`. This
new name more accurately reflects the fact that this action will
primarily run the code-gen/backend pipeline in LLVM. It also makes more
sense as an action implementing both `-emit-obj` and `-S` (originally,
it was just `-emit-obj`).

`tripleName` from FirContext.cpp is deleted and, when a target triple is
required, `mlir::LLVM::LLVMDialect::getTargetTripleAttrName()` is used
instead. In practice, this means that `fir.triple` is replaced with
`llvm.target_triple`. The former was effectively ignored. The latter is
used when lowering from the LLVM dialect in MLIR to LLVM IR (i.e. it's
embedded in the generated LLVM IR module). The driver can then re-use
it when configuring the backend. With this change, the LLVM IR files
generated by e.g. `tco` will from now on contain the correct target
triple.

The code-gen.f90 test is replaced with code-gen-x86.f90 and
code-gen-aarch64.f90. With 2 seperate files we can verify that
`--target` is correctly taken into account. LIT configuration is updated
to enable e.g.:
```
! REQUIRES: aarch64-registered-target
```

Differential Revision: https://reviews.llvm.org/D120568
2022-03-09 15:48:09 +00:00
Valentin Clement
e1a12767ee
[flang] Initial lowering for empty program
This patch enable lowering from Fortran to FIR for a basic empty
program. It brings all the infrastructure needed for that. As discussed
previously, this is the first patch for lowering and follow up patches
should be smaller.

With this patch we can lower the following code:

```
program basic
end program
```

To a the FIR equivalent:

```
func @_QQmain() {
  return
}
```

Follow up patch will add lowering of more complex constructs.

Reviewed By: kiranchandramohan, schweitz, PeteSteinfeld

Differential Revision: https://reviews.llvm.org/D118436
2022-01-28 22:39:58 +01:00
Kiran Chandramohan
7ce8c6fcf1 [Flang] Replace notifyMatchFailure with TODO hard failures
For unimplemented patterns we revert to using TODO hard failures instead of
notifyMatchFailure.

For fir.select_type revert to using mlir::emiterror.
For the fir.embox TODO on a type with len params we cannot add a test since the type cannot be converted to llvm.

Adding negative tests using not and checking for the error message.
TODO exits with an error in a build without assertion but aborts in a
build with assertions. Abort requires using not with the --crash
option. The two different usages of not is handled by using a custom
command %not_todo_cmd which is converted to not or not --crash
depending on the presence or absence of assertions. Using llvm-config
to check the presence of assertions.

Reviewed By: clementval, awarzynski

Differential Revision: https://reviews.llvm.org/D114371
2021-12-02 10:25:02 +00:00
Kiran Chandramohan
003c9c7457 Revert "[Flang] Replace notifyMatchFailure with TODO hard failures"
This reverts commit 46fd7fd7b342039b59ec534bab8b93fa5d34f6e2.
2021-12-01 14:23:48 +00:00
Kiran Chandramohan
46fd7fd7b3 [Flang] Replace notifyMatchFailure with TODO hard failures
For unimplemented patterns we revert to using TODO hard failures instead of
notifyMatchFailure.

For fir.select_type revert to using mlir::emiterror.
For the fir.embox TODO on a type with len params we cannot add a test since the type cannot be converted to llvm.

Adding negative tests using not and checking for the error message.
TODO exits with an error in a build without assertion but aborts in a
build with assertions. Abort requires using not with the --crash
option. The two different usages of not is handled by using a custom
command %not_todo_cmd which is converted to not or not --crash
depending on the presence or absence of assertions. Using llvm-config
to check the presence of assertions.

Reviewed By: clementval, awarzynski

Differential Revision: https://reviews.llvm.org/D114371
2021-12-01 08:19:44 +00:00
Andrzej Warzynski
5c52753d9f [Flang] Fix failing plugin tests
The updated tests were originally added in
https://reviews.llvm.org/D109890 and are currently causing some
buildbots to fail.

This patch:
* adds missing items in the `REQUIRERS` list in tests
* adds `flangOmpReport` (the plugin library added in D109890) as a CMake
  dependency for tests (only when examples are enabled)

Differential Revision: https://reviews.llvm.org/D110682
2021-09-29 09:27:11 +00:00
Stuart Ellis
520e5db26a [flang][driver] Add print function name Plugin example
Replacing Hello World example Plugin with one that counts and prints the names of
functions and subroutines.
This involves changing the `PluginParseTreeAction` Plugin base class to
inherit from `PrescanAndSemaAction` class to get access to the Parse Tree
so that the Plugin can walk it.
Additionally, there are tests of this new Plugin to check it prints the correct
things in different circumstances.

Depends on: D106137

Reviewed By: awarzynski

Differential Revision: https://reviews.llvm.org/D107089
2021-08-19 08:25:34 +00:00
Andrzej Warzynski
8150c1bd8e [flang] Disable Plugins in out-of-tree builds
https://reviews.llvm.org/D106137 added support for plugins in Flang. The
CMake configuration for plugins requires some LLVM variables that are
not available in out-of-tree builds (e.g. `LLVM_SHLIB_OUTPUT_INTDIR`).
This has caused the out-of-tree BuildBot worker to start failing:
  * https://lab.llvm.org/buildbot/#/builders/175

This patch effectively disables plugins in out-of-tree builds and fixes
the configuration error. In order to support plugins in out-of-tree
builds, we would have to find a way to access the missing CMake
variables from LLVM. This could be implemented at a later time.

Differential Revision: https://reviews.llvm.org/D107973
2021-08-12 19:29:28 +00:00
Stuart Ellis
f52fc591fa [flang][driver] Add support for Frontend Plugins
Introducing a plugin API and a simple HelloWorld Plugin example.
This patch adds the `-load` and `-plugin` flags to frontend driver and
the code around using custom frontend actions from within a plugin
shared library object.

It also adds to the Driver-help test to check the help option with the
updated driver flags.

Additionally, the patch creates a plugin-example test to check the
HelloWorld plugin example runs correctly. As part of this, a new CMake
flag (`FLANG_BUILD_EXAMPLES`) is added to allow the example to be built
and for the test to run.

This Plugin API has only been tested on Linux.

Reviewed By: awarzynski

Differential Revision: https://reviews.llvm.org/D106137
2021-08-12 11:42:16 +01:00
Andrzej Warzynski
7b73ca3043 [flang][driver] Delete f18 (i.e. the old Flang driver)
This patch removes `f18`, a.k.a. the old driver. It is being replaced
with the new driver, `flang-new`, which has reached feature parity with
`f18` a while ago. This was discussed in [1] and also in [2].

With this change, `FLANG_BUILD_NEW_DRIVER` is no longer needed and is
also deleted. This means that we are making the dependency on Clang permanent
(i.e. it cannot be disabled with a CMake flag).

LIT set-up is updated accordingly. All references to `f18` or `f18.cpp`
are either updated or removed.

The `F18_FC` variable from the `flang` bash script is replaced with
`FLANG_FC`. The former is still supported for backwards compatibility.

[1] https://lists.llvm.org/pipermail/flang-dev/2021-June/000742.html
[2] https://reviews.llvm.org/D103177

Differential Revision: https://reviews.llvm.org/D105811
2021-08-05 12:57:15 +00:00
Andrzej Warzynski
fe892114e3 [flang][nfc] Simplify CMake
Folds `list(APPEND <list> [<element>...])` into the definition of
`<list>`.
2021-07-12 17:11:33 +00:00
Tim Keith
8e1c09ee5f [flang] Build intrinsic .mod files in include/flang
The build was putting .mod files for intrinsic modules in
tools/flang/include/flang but the install puts them in include/flang,
as does the out-of-tree build. This confused things for the driver.
This change makes the build consistent with the install and simplifies
the flang script accordingly.

Also, clean up the cmake commands for building the .mod files.

Differential Revision: https://reviews.llvm.org/D98522
2021-03-15 08:03:02 -07:00
clementval
8260232cdd [flang][fir] Add fir-opt tool
This patch introduce the fir-opt tool. Similar to mlir-opt for FIR.
It will be used in following patches to test fir opt and round-trip.

Reviewed By: schweitz, mehdi_amini

Differential Revision: https://reviews.llvm.org/D96535
2021-02-16 11:48:40 -05:00
clementval
af186e9372 Revert "[flang][fir] Add fir-opt tool"
This reverts commit df1eeaa7b404f7c5a96a812479f0ee2ce8354f6a.

Buildbot failure.
2021-02-12 22:27:48 -05:00
Valentin Clement
df1eeaa7b4 [flang][fir] Add fir-opt tool
This patch introduce the fir-opt tool. Similar to mlir-opt for FIR.
It will be used in following patches to test fir opt and round-trip.

Reviewed By: schweitz, mehdi_amini

Differential Revision: https://reviews.llvm.org/D96535
2021-02-12 22:20:38 -05:00
Sourabh Singh Tomar
6a7deff58e [flang] Remove LINK_WITH_FIR cmake switch
Most components required for this are already there.

Build and Testing clean.
ninja check-flang

Reviewed By: clementval, tskeith

Differential Revision: https://reviews.llvm.org/D96411
2021-02-11 22:52:13 +05:30
Caroline Concatto
257b29715b [flang][driver] Add the new flang compiler and frontend drivers
Summary:

This is the first patch implementing the new Flang driver as outlined in [1],
[2] & [3]. It creates Flang driver (`flang-new`) and Flang frontend driver
(`flang-new -fc1`). These will be renamed as `flang` and `flang -fc1` once the
current Flang throwaway driver, `flang`, can be replaced with `flang-new`.

Currently only 2 options are supported: `-help` and `--version`.

`flang-new` is implemented in terms of libclangDriver, defaulting the driver
mode to `FlangMode` (added to libclangDriver in [4]). This ensures that the
driver runs in Flang mode regardless of the name of the binary inferred from
argv[0].

The design of the new Flang compiler and frontend drivers is inspired by it
counterparts in Clang [3]. Currently, the new Flang compiler and frontend
drivers re-use Clang libraries: clangBasic, clangDriver and clangFrontend.

To identify Flang options, this patch adds FlangOption/FC1Option enums.
Driver::printHelp is updated so that `flang-new` prints only Flang options.
The new Flang driver is disabled by default. To enable it, set
`-DBUILD_FLANG_NEW_DRIVER=ON` when configuring CMake and add clang to
`LLVM_ENABLE_PROJECTS` (e.g. -DLLVM_ENABLE_PROJECTS=“clang;flang;mlir”).

[1] “RFC: new Flang driver - next steps”
http://lists.llvm.org/pipermail/flang-dev/2020-July/000470.html
[2] “RFC: Adding a fortran mode to the clang driver for flang”
http://lists.llvm.org/pipermail/cfe-dev/2019-June/062669.html
[3] “RFC: refactoring libclangDriver/libclangFrontend to share with Flang”
http://lists.llvm.org/pipermail/cfe-dev/2020-July/066393.html
[4] https://reviews.llvm.org/rG6bf55804924d5a1d902925ad080b1a2b57c5c75c

co-authored-by: Andrzej Warzynski <andrzej.warzynski@arm.com>

Reviewed By: richard.barton.arm, sameeranjoshi

Differential Revision: https://reviews.llvm.org/D86089
2020-09-11 10:55:54 +01:00
Andrzej Warzynski
621681e3e5 [Flang] Fix multi-config generator builds
Based on https://reviews.llvm.org/D84022 with additional changes to
maintain out-of-tree builds.

Original commit message:
Currently the binaries are output directly into the bin subdirectory of
the build directory. This doesn't work correctly with multi-config
generators which should output the binaries into <CONFIG_NAME>/bin
instead.

The original patch was implemented by David Truby and the additional
changes added here were also proposed by David Truby.

Differential Revision: https://reviews.llvm.org/D85078/

Co-authored-by: David Truby <david.truby@arm.com>
2020-08-05 08:59:11 +01:00
David Truby
4ef2e594d5 [flang] Run non-gtest unit tests with lit.
Summary:
As a corrollary, these tests are now run as part of the check-flang
target.

Reviewers: sscalpone

Subscribers: mgorny, delcypher, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D83946
2020-07-24 14:49:39 +01:00