Commit Graph

19 Commits

Author SHA1 Message Date
Valentin Clement cc306740cc
[flang] Handle logical constant value for quiet in STOP stmt
This patch handles the quiet argument in the STOP statement. It adds
ability to lower LOGICAL constant.

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

Reviewed By: kiranchandramohan, PeteSteinfeld

Differential Revision: https://reviews.llvm.org/D118897

Co-authored-by: Jean Perier <jperier@nvidia.com>
2022-02-04 10:12:25 +01:00
Valentin Clement ca53e049e0
[flang] Lower integer constant code for STOP stmt
This patch lower the integer constant code in the STOP statement.

The code is lowered to `arith.constant`.

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

Reviewed By: schweitz, kiranchandramohan

Differential Revision: https://reviews.llvm.org/D118787
2022-02-03 11:31:12 +01:00
Valentin Clement db01b123d0
[flang] Lower PAUSE statement
Lower the PAUSE statement to a runtime call.

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

Reviewed By: kiranchandramohan, schweitz

Differential Revision: https://reviews.llvm.org/D118699

Co-authored-by: Eric Schweitz <eschweitz@nvidia.com>
Co-authored-by: Jean Perier <jperier@nvidia.com>
2022-02-02 08:16:12 +01:00
Valentin Clement aab4263ad6
[flang] Lower basic STOP statement
This patch lowers STOP statement without arguments
and ERROR STOP. STOP statement with arguments lowering will
come in later patches ince it requires some expression lowering
to be added.
STOP statement is lowered to a runtime call.

Also makes sure we are creating a constant in the MLIR arith constant.

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

Reviewed By: kiranchandramohan, schweitz

Differential Revision: https://reviews.llvm.org/D118697

Co-authored-by: Eric Schweitz <eschweitz@nvidia.com>
2022-02-01 20:54:45 +01:00
Valentin Clement 89275300d8
[flang] Add lowering for basic empty SUBROUTINE
This patch adds the ability to lower an empty subroutine.

Reviewed By: kiranchandramohan

Differential Revision: https://reviews.llvm.org/D118695
2022-02-01 15:28:18 +01:00
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
Andrzej Warzynski d18a9aeae9 [flang] Make the frontend driver error out when requesting multiple actions
With this change, the following invocations will be treated as errors
(multiple actions are specified):
```
$ flang-new -fc1 -E -fsyntax-only file.95
$ flang-new -fc1 -fsyntax-only -fdebug-dump-symbols file.95
```
In the examples above it is not clear whether it is `-fsyntax-only` or
the other action that is run (i.e. `-E` or `-fdebug-dump-symbols`). It
makes sense to disallow such usage. This should also lead to cleaner and
clearer tests (the `RUN` lines using `%flang_fc1` will only allow one
action).

This change means that `flang-new -fc1` and `clang -cc1` will behave
differently when multiple action options are specified. As frontend
drivers are mostly used by compiler developers, this shouldn't affect or
confuse the compiler end-users. Also, `flang-new` and `clang` remain
consistent.

Tests are updated accordingly. More specifically, I've made sure that
every test specifies only one action. I've also taken the opportunity to
simplify "multiple-input-files.f90" a bit.

Differential Revision: https://reviews.llvm.org/D111781
2021-12-17 10:05:28 +00:00
Quinn Pham b90eef3004 [NFC][flang] Inclusive language: remove instances of master
[NFC] As part of using inclusive language within the llvm project, this patch:
- replaces master with main in C++style.md to match the renaming of the master
branch,
- removes master from `FortranIR.md` where it is superfluous,
- renames a logical variable in `pre-fir-tree04.f90` containing master.

Reviewed By: ZarkoCA

Differential Revision: https://reviews.llvm.org/D113923
2021-11-25 15:11:10 -06:00
Andrzej Warzynski e7be90bd27 [flang] Update the regression tests to use the new driver when enabled
This patch updates most of the remaining regression tests (~400) to use
`flang-new` rather then `f18` when `FLANG_BUILD_NEW_DRIVER` is set.
This allows us to share more Flang regression tests between `f18` and
`flang-new`. A handful of tests have not been ported yet - these are
currently either failing or not supported by the new driver.

Summary of changes:
  * RUN lines in tests are updated to use `%flang_fc1` instead of `%f18`
  * option spellings in tests are updated to forms accepted by both `f18` and
    `flang-new`
  * variables in Bash scripts are renamed (e.g. F18 --> FLANG_FC1)
The updated tests will now be run with the new driver, `flang-new`,
whenever it is enabled (i.e when `FLANG_BUILD_NEW_DRIVER` is set).

Although this patch touches many files, vast majority of the changes are
automatic:
```
grep -IEZlr "%f18" flang/test/ | xargs -0 -l sed -i 's/%f18/%flang_fc1/g
```

Differential Revision: https://reviews.llvm.org/D100309
2021-04-15 08:52:23 +00:00
Andrzej Warzynski 547624af19 [flang][driver] Revert RUN-line change
In https://reviews.llvm.org/D98283, the RUN line in pre-fir-tree04.f90
was updated to use `%flang_fc1` instead of `%f18` (so that the test is
shared between the old and the new driver). Unfortunately, the new
driver does not know yet how to find standard intrinsics modules. As a
result, the test fails when `FLANG_BUILD_NEW_DRIVER` is set to On.

I'm restoring the original RUN line. This is rather straightforward, so
sending without a review. This should make Flang builders happy.
2021-03-10 16:58:24 +00:00
Eric Schweitz 987ee6e3cc [flang][fir] Upstream the pre-FIR tree changes.
The PFT has been updated to support Fortran 77.
clang-tidy cleanup.

Authors: Val Donaldson, Jean Perier, Eric Schweitz, et.al.

Differential Revision: https://reviews.llvm.org/D98283
2021-03-10 07:45:58 -08:00
Faris Rehman 529f71811b [flang][driver] Add debug measure-parse-tree and pre-fir-tree options
Add the following options:
* -fdebug-measure-parse-tree
* -fdebug-pre-fir-tree

Summary of changes:
- Add 2 new frontend actions: DebugMeasureParseTreeAction and DebugPreFIRTreeAction
- Add MeasurementVisitor to FrontendActions.h
- Make reportFatalSemanticErrors return true if there are any fatal errors
- Port most of the `-fdebug-pre-fir-tree` tests to use the new driver if built, otherwise use f18.

Differential Revision: https://reviews.llvm.org/D96884
2021-02-19 11:27:54 +00:00
peter klausler 34eb0adaa9 [flang] Add -fsyntax-only to f18; retain -fparse-only synonym
Now that semantics is working, the standard -fsyntax-only option of
GNU and Clang should be used as the name of the option that causes
f18 to just run the front-end.  Support both options in f18, silently
accepting the old option as a synonym for the new one (as
preferred by the code owner), and replace all instances of the
old -fparse-only option with -fsyntax-only throughout the source base.

Differential Revision: https://reviews.llvm.org/D95887
2021-02-03 09:01:39 -08:00
Valentin Clement 05169af5ce [flang][openacc] Handle optional end directive in combined construct
OpenACC combined construct can have an optional end directive. This patch handle this
case in the parsing/unparsing with a canonicalization step. Unlike OmpEndLoopDirective,
this doesn't need a special treatment in the pre-fir tree as there is no clause attached to
a AccEndCombinedDirective.

Reviewed By: klausler

Differential Revision: https://reviews.llvm.org/D84481
2020-08-13 14:05:00 -04:00
Valentin Clement b27ab9ce74 [flang][openacc] Skeleton for OpenACC construct lowering
Summary:
This patch introduce the basic infrastructure to be able to lower
OpenACC constructs to the future OpenACC dialect.

Reviewers: schweitz, kiranchandramohan, DavidTruby, sscalpone, jdoerfert, ichoyjx

Reviewed By: ichoyjx

Subscribers: ichoyjx, SouraVX, mgorny, jfb, sstefan1, llvm-commits

Tags: #llvm, #flang

Differential Revision: https://reviews.llvm.org/D84195
2020-07-22 21:34:22 -04:00
Anchu Rajendran 70f1b4b412 [flang] Implemented 2 Semantic checks for DATA statement and fixed a few bugs
Summary
  - Implemented C876, C877
  - Fixed IsConstantExpr to check C879
  - Fixed bugs in few test cases - data01.f90, block-data01.f90,
  pre-fir-tree02.f90
  - Modified implementation of C8106 to identify all automatic objects
  and modified equivalence01.f90 to reflect the changes

Differential Revision: https://reviews.llvm.org/D78424
2020-06-03 10:33:26 +05:30
Eric Schweitz fbac9ce226 [flang] Batch together the changes to the PFT intermediate data
structure for upstreaming to llvm-project.

These files have had many changes since they were originally upstreamed.
Some of the changes are cosmetic.  Most of the functional changes were
done to support the lowering of control-flow syntax from the front-end
parse trees to the FIR dialect.

This patch is meant to be a reviewable size. The functionality it
provides will be used by code yet to be upstreamed in lowering.

review comments:

[review D80449][NFC] make PFT ParentVariant a ReferenceVariant

ReferenceVariant had to be slightly updated to also support
non constant references (which is required for ParentType).

[review D80449] extend Variable implementation beyond a comment
2020-05-29 15:24:20 -07:00
Tim Keith 99aa87a5b5 [flang][NFC] Simplify semantics test scripts
There were several different ways of handling the option to f18 to
find predefined modules:
- test_errors.sh was created by cmake substituting
  FLANG_INTRINSIC_MODULES_DIR into test_errors.sh.in
- some tests used the flang script which has the option built it
- some tests used %f18_with_includes which was replaced by the path
  to f18 plus the -I option
- some included -I../../include/flang in their run command

To make this more consistent, change %f18 to include the
-intrinsic-module-directory option and use it everywhere, including
to replace %flang and %f18_with_includes. This requires changing all
of the invocations of the test scripts to put %f18 at the end so that
it can expand to more than one argument.

This eliminates the need to generate test_errors.sh which means we
don't need flang/test/Semantics/CMakeLists.txt or the %B substitution.
That makes the test_errors.sh command like the others, replacing
%B/test/Semantics/test_errors.sh with %S/test_errors.sh.

Also remove the OPTIONS: functionality as custom options can be included
in the RUN: command. And remove -I/../../include/flang as that is now
always included.

Differential Revision: https://reviews.llvm.org/D79634
2020-05-11 11:49:25 -07:00
Luke Ireland f1a8eae3b6 [flang] Port all remaining regression tests to lit
We have re-classified a subset of the regression tests as unit tests and
now we are porting the remaining ones.

Test discovery and running is now performed by lit rather than ctest.
The tests continue to use their original scripts with minor
modifications. Most of the changes were mechanical and so scripted.
A few changes were made by hand. Details

Manual:
  * modfile09-*.f90 tests depend on being run together as some tests have
    dependencies on modules created by other tests. This will need
     separating out when porting away from test_modfile.sh, but for now,
     added modfile09-*.f90 to the Inputs directory and added a single
     tests modfile09.f90 to hold the run line.
  * getdefinition03-a.f90 includes a non-test file getdefinition03-b.f90.
    Manually edited the former to find the latter in Inputs so as to add
    only one test.
  * Same pattern for getsymbols03-{a,b}.f90

Auto:
  * Remaining tests have a lit RUN line added to them based on the type
    of test they are.
  * Failing tests also have an XFAIL line added to them.
  * Generic tests have their pre-existing RUN lines replaced with the
    word "EXEC" to avoid conflict with the added lit RUN line.

Original-commit: flang-compiler/f18@63ec0af9f4
Reviewed-on: https://github.com/flang-compiler/f18/pull/1027
Tree-same-pre-rewrite: false
2020-03-13 11:58:11 +00:00