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llvm-project/flang/test/Driver/driver-help-hidden.f90

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[Flang][Driver] Add infrastructure for basic frontend actions and file I/O This patch introduces the dependencies required to read and manage input files provided by the command line option. It also adds the infrastructure to create and write to output files. The output is sent to either stdout or a file (specified with the `-o` flag). Separately, in order to be able to test the code for file I/O, it adds infrastructure to create frontend actions. As a basic testable example, it adds the `InputOutputTest` FrontendAction. The sole purpose of this action is to read a file from the command line and print it either to stdout or the output file. This action is run by using the `-test-io` flag also introduced in this patch (available for `flang-new` and `flang-new -fc1`). With this patch: ``` flang-new -test-io input-file.f90 ``` will read input-file.f90 and print it in the output file. The `InputOutputTest` frontend action has been introduced primarily to facilitate testing. It is hidden from users (i.e. it's only displayed with `--help-hidden`). Currently Clang doesn’t have an equivalent action. `-test-io` is used to trigger the InputOutputTest action in the Flang frontend driver. This patch makes sure that “flang-new” forwards it to “flang-new -fc1" by creating a preprocessor job. However, in Flang.cpp, `-test-io` is passed to “flang-new -fc1” without `-E`. This way we make sure that the preprocessor is _not_ run in the frontend driver. This is the desired behaviour: `-test-io` should only read the input file and print it to the output stream. co-authored-by: Andrzej Warzynski <andrzej.warzynski@arm.com> Differential Revision: https://reviews.llvm.org/D87989
2020-10-24 19:33:19 +08:00
!--------------------------
! FLANG DRIVER (flang-new)
!--------------------------
[flang][driver] Remove `%flang-new` from the LIT configuration `%flang-new` was introduced in the early days of the new driver to make a clear distinction between the tests for the current and the new driver. We have since introduced `%flang` (compiler driver) and `%flang_fc1` (frontend driver) as the long term solution. This has allowed us to share tests between `flang-new` and `f18`. This patch replaces all uses of `%flang-new` with `%flang` and `%flang_fc1`. Some tests are reformatted so that all tests look uniform and are easier to follow. Where possible, `! REQUIRES: new-flang-driver` is deleted so that more tests can be shared with `f18`. To facilitate this, `f{no-}implicit-none` are introduced in `f18` with semantics identical to `flang-new`. Two tests are deleted rather than updated: * flang/test/Frontend/print-preprocess-C-file.f90 * flang/test/Frontend/print-preprocessed-file.f90 Instead, there is plenty of preprocessor tests in flang/test/Preprocessing/. Differential Revision: https://reviews.llvm.org/D100174
2021-04-09 18:32:31 +08:00
! RUN: %flang --help-hidden 2>&1 | FileCheck %s
! RUN: not %flang -help-hidden 2>&1 | FileCheck %s --check-prefix=ERROR-FLANG
[Flang][Driver] Add infrastructure for basic frontend actions and file I/O This patch introduces the dependencies required to read and manage input files provided by the command line option. It also adds the infrastructure to create and write to output files. The output is sent to either stdout or a file (specified with the `-o` flag). Separately, in order to be able to test the code for file I/O, it adds infrastructure to create frontend actions. As a basic testable example, it adds the `InputOutputTest` FrontendAction. The sole purpose of this action is to read a file from the command line and print it either to stdout or the output file. This action is run by using the `-test-io` flag also introduced in this patch (available for `flang-new` and `flang-new -fc1`). With this patch: ``` flang-new -test-io input-file.f90 ``` will read input-file.f90 and print it in the output file. The `InputOutputTest` frontend action has been introduced primarily to facilitate testing. It is hidden from users (i.e. it's only displayed with `--help-hidden`). Currently Clang doesn’t have an equivalent action. `-test-io` is used to trigger the InputOutputTest action in the Flang frontend driver. This patch makes sure that “flang-new” forwards it to “flang-new -fc1" by creating a preprocessor job. However, in Flang.cpp, `-test-io` is passed to “flang-new -fc1” without `-E`. This way we make sure that the preprocessor is _not_ run in the frontend driver. This is the desired behaviour: `-test-io` should only read the input file and print it to the output stream. co-authored-by: Andrzej Warzynski <andrzej.warzynski@arm.com> Differential Revision: https://reviews.llvm.org/D87989
2020-10-24 19:33:19 +08:00
!----------------------------------------
! FLANG FRONTEND DRIVER (flang-new -fc1)
!----------------------------------------
[flang][driver] Remove `%flang-new` from the LIT configuration `%flang-new` was introduced in the early days of the new driver to make a clear distinction between the tests for the current and the new driver. We have since introduced `%flang` (compiler driver) and `%flang_fc1` (frontend driver) as the long term solution. This has allowed us to share tests between `flang-new` and `f18`. This patch replaces all uses of `%flang-new` with `%flang` and `%flang_fc1`. Some tests are reformatted so that all tests look uniform and are easier to follow. Where possible, `! REQUIRES: new-flang-driver` is deleted so that more tests can be shared with `f18`. To facilitate this, `f{no-}implicit-none` are introduced in `f18` with semantics identical to `flang-new`. Two tests are deleted rather than updated: * flang/test/Frontend/print-preprocess-C-file.f90 * flang/test/Frontend/print-preprocessed-file.f90 Instead, there is plenty of preprocessor tests in flang/test/Preprocessing/. Differential Revision: https://reviews.llvm.org/D100174
2021-04-09 18:32:31 +08:00
! RUN: not %flang_fc1 --help-hidden 2>&1 | FileCheck %s --check-prefix=ERROR-FLANG-FC1
! RUN: not %flang_fc1 -help-hidden 2>&1 | FileCheck %s --check-prefix=ERROR-FLANG-FC1
[Flang][Driver] Add infrastructure for basic frontend actions and file I/O This patch introduces the dependencies required to read and manage input files provided by the command line option. It also adds the infrastructure to create and write to output files. The output is sent to either stdout or a file (specified with the `-o` flag). Separately, in order to be able to test the code for file I/O, it adds infrastructure to create frontend actions. As a basic testable example, it adds the `InputOutputTest` FrontendAction. The sole purpose of this action is to read a file from the command line and print it either to stdout or the output file. This action is run by using the `-test-io` flag also introduced in this patch (available for `flang-new` and `flang-new -fc1`). With this patch: ``` flang-new -test-io input-file.f90 ``` will read input-file.f90 and print it in the output file. The `InputOutputTest` frontend action has been introduced primarily to facilitate testing. It is hidden from users (i.e. it's only displayed with `--help-hidden`). Currently Clang doesn’t have an equivalent action. `-test-io` is used to trigger the InputOutputTest action in the Flang frontend driver. This patch makes sure that “flang-new” forwards it to “flang-new -fc1" by creating a preprocessor job. However, in Flang.cpp, `-test-io` is passed to “flang-new -fc1” without `-E`. This way we make sure that the preprocessor is _not_ run in the frontend driver. This is the desired behaviour: `-test-io` should only read the input file and print it to the output stream. co-authored-by: Andrzej Warzynski <andrzej.warzynski@arm.com> Differential Revision: https://reviews.llvm.org/D87989
2020-10-24 19:33:19 +08:00
!----------------------------------------------------
! EXPECTED OUTPUT FOR FLANG DRIVER (flang-new)
!----------------------------------------------------
! CHECK:USAGE: flang-new
! CHECK-EMPTY:
! CHECK-NEXT:OPTIONS:
[flang][driver] Make sure that `-###` is marked as supported (NFC) `-###` has always been supported in the new flang driver. This patch merely makes sure that it's included when printing the help screen (i.e. `flang-new -help`).
2020-11-11 16:45:54 +08:00
! CHECK-NEXT: -### Print (but do not run) the commands to run for this compilation
[flang][driver] Add support for `-cpp/-nocpp` This patch adds support for the `-cpp` and `-nocpp` flags. The implemented semantics match f18 (i.e. the "throwaway" driver), but are different to gfortran. In Flang the preprocessor is always run. Instead, `-cpp/-nocpp` are used to control whether predefined and command-line preprocessor macro definitions are enabled or not. In practice this is sufficient to model gfortran`s `-cpp/-nocpp`. In the absence of `-cpp/-nocpp`, the driver will use the extension of the input file to decide whether to include the standard macro predefinitions. gfortran's documentation [1] was used to decide which file extension to use for this. The logic mentioned above was added in FrontendAction::BeginSourceFile. That's relatively late in the driver set-up, but this roughly where the name of the input file becomes available. The logic for deciding between fixed and free form works in a similar way and was also moved to FrontendAction::BeginSourceFile for consistency (and to reduce code-duplication). The `-cpp/-nocpp` flags are respected also when the input is read from stdin. This is different to: * gfortran (behaves as if `-cpp` was used) * f18 (behaves as if `-nocpp` was used) Starting with this patch, file extensions are significant and some test files had to be renamed to reflect that. Where possible, preprocessor tests were updated so that they can be shared between `f18` and `flang-new`. This was implemented on top of adding new test for `-cpp/-nocpp`. [1] https://gcc.gnu.org/onlinedocs/gcc/Overall-Options.html Reviewed By: kiranchandramohan Differential Revision: https://reviews.llvm.org/D99292
2021-04-07 19:42:37 +08:00
! CHECK-NEXT: -cpp Enable predefined and command line preprocessor macros
[flang][driver] Add support for `-c` and `-emit-obj` This patch adds a frontend action for emitting object files. While Flang does not support code-generation, this action remains a placeholder. This patch simply provides glue-code to connect the compiler driver with the appropriate frontend action. The new action is triggered with the `-c` compiler driver flag, i.e. `flang-new -c`. This is then translated to `flang-new -fc1 -emit-obj`, so `-emit-obj` has to be marked as supported as well. As code-generation is not available yet, `flang-new -c` results in a driver error: ``` error: code-generation is not available yet ``` Hopefully this will help communicating the level of available functionality within Flang. The definition of `emit-obj` is updated so that it can be shared between Clang and Flang. As the original definition was enclosed within a Clang-specific TableGen `let` statement, it is extracted into a new `let` statement. That felt like the cleanest option. I also commented out `-triple` in Flang::ConstructJob and updated some comments there. This is similar to https://reviews.llvm.org/D93027. I wanted to make sure that it's clear that we can't support `-triple` until we have code-generation. However, once code-generation is available we _will need_ `-triple`. As this patch adds `-emit-obj`, the emit-obj.f90 becomes irrelevant and is deleted. Instead, phases.f90 is added to demonstrate that users can control compilation phases (indeed, `-c` is a phase control flag). Reviewed By: SouraVX, clementval Differential Revision: https://reviews.llvm.org/D93301
2021-01-07 17:08:54 +08:00
! CHECK-NEXT: -c Only run preprocess, compile, and assemble steps
[flang][driver] Add support for `-D`, `-U` Add support for options -D and -U in the new Flang driver. Summary of changes: - Create PreprocessorOptions, to be used by the driver then translated into Fortran::parser::Options - Create CompilerInvocation::setFortranOpts to pass preprocessor options into the parser options - Add a dedicated method, Flang::AddPreprocessingOptions, to extract preprocessing options from the driver arguments into the preprocessor command arguments Macros specified like -DName will default to definition 1. When defining macros, the new driver will drop anything after an end-of-line character. This is consistent with gfortran and clang, but different to what currently f18 does. However, flang (which is a bash wrapper for f18), also drops everything after an end-of-line character. So gfortran-like behaviour felt like the natural choice. Test is added to demonstrate this behaviour. Reviewed By: awarzynski Differential Revision: https://reviews.llvm.org/D93401
2021-01-06 23:42:24 +08:00
! CHECK-NEXT: -D <macro>=<value> Define <macro> to <value> (or 1 if <value> omitted)
[Flang][Driver] Add PrintPreprocessedInput FrontendAction (`flang-new -E`) This patch implements the first frontend action for the Flang parser (i.e. Fortran::parser). This action runs the preprocessor and is invoked with the `-E` flag. (i.e. `flang-new -E <input-file>). The generated output is printed to either stdout or the output file (specified with `-` or `-o <output-file>`). Note that currently there is no mechanism to map options for the frontend driver (i.e. Fortran::frontend::FrontendOptions) to options for the parser (i.e. Fortran::parser::Options). Instead, Frotran::parser::options are hard-coded to: ``` std::vector<std::string> searchDirectories{"."s}; searchDirectories = searchDirectories; isFixedForm = false; _encoding(Fortran::parser::Encoding::UTF_8); ``` These default settings are compatible with the current Flang driver. Further work is required in order for CompilerInvocation to read and map clang::driver::options to Fortran::parser::options. Co-authored-by: Andrzej Warzynski <andrzej.warzynski@arm.com> Differential Revision: https://reviews.llvm.org/D88381
2020-10-27 20:26:47 +08:00
! CHECK-NEXT: -E Only run the preprocessor
[flang][driver] Add extension options and -finput-charset Add the following options: * -fimplicit-none and -fno-implicit-none * -fbackslash and -fno-backslash * -flogical-abbreviations and -fno-logical-abbreviations * -fxor-operator and -fno-xor-operator * -falternative-parameter-statement * -finput-charset=<value> Summary of changes: - Enable extensions in CompilerInvocation#ParseFrontendArgs - Add encoding_ to Fortran::frontend::FrontendOptions - Add encoding to Fortran::parser::Options Differential Revision: https://reviews.llvm.org/D96407
2021-02-05 05:11:22 +08:00
! CHECK-NEXT: -falternative-parameter-statement
! CHECK-NEXT: Enable the old style PARAMETER statement
! CHECK-NEXT: -fbackslash Specify that backslash in string introduces an escape character
[Flang][Driver] Add infrastructure for basic frontend actions and file I/O This patch introduces the dependencies required to read and manage input files provided by the command line option. It also adds the infrastructure to create and write to output files. The output is sent to either stdout or a file (specified with the `-o` flag). Separately, in order to be able to test the code for file I/O, it adds infrastructure to create frontend actions. As a basic testable example, it adds the `InputOutputTest` FrontendAction. The sole purpose of this action is to read a file from the command line and print it either to stdout or the output file. This action is run by using the `-test-io` flag also introduced in this patch (available for `flang-new` and `flang-new -fc1`). With this patch: ``` flang-new -test-io input-file.f90 ``` will read input-file.f90 and print it in the output file. The `InputOutputTest` frontend action has been introduced primarily to facilitate testing. It is hidden from users (i.e. it's only displayed with `--help-hidden`). Currently Clang doesn’t have an equivalent action. `-test-io` is used to trigger the InputOutputTest action in the Flang frontend driver. This patch makes sure that “flang-new” forwards it to “flang-new -fc1" by creating a preprocessor job. However, in Flang.cpp, `-test-io` is passed to “flang-new -fc1” without `-E`. This way we make sure that the preprocessor is _not_ run in the frontend driver. This is the desired behaviour: `-test-io` should only read the input file and print it to the output stream. co-authored-by: Andrzej Warzynski <andrzej.warzynski@arm.com> Differential Revision: https://reviews.llvm.org/D87989
2020-10-24 19:33:19 +08:00
! CHECK-NEXT: -fcolor-diagnostics Enable colors in diagnostics
[flang][driver] Add options for -fdefault* and -flarge-sizes Add support for the following Fortran dialect options: - -default* - -flarge-sizes It also adds two test cases: # For checking whether `flang-new` is passing options correctly to `flang-new -fc1`. # For checking if `fdefault-` arguments are processed properly. Also moves the Dialect related option parsing to a dedicated function and adds a member `defaultKinds()` to `CompilerInvocation` Depends on: D96032 Differential Revision: https://reviews.llvm.org/D96344
2021-03-04 00:28:11 +08:00
! CHECK-NEXT: -fdefault-double-8 Set the default double precision kind to an 8 byte wide type
! CHECK-NEXT: -fdefault-integer-8 Set the default integer kind to an 8 byte wide type
! CHECK-NEXT: -fdefault-real-8 Set the default real kind to an 8 byte wide type
[flang][driver] Add forced form flags and -ffixed-line-length Add support for the following layout options: * -ffree-form * -ffixed-form - -ffixed-line-length=n (alias -ffixed-line-length-n) Additionally remove options `-fno-free-form` and `-fno-fixed-form` as they were initially added to forward to gfortran but gfortran does not support these flags. This patch adds the flag FlangOnlyOption to the existing options `-ffixed-form`, `-ffree-form` and `-ffree-line-length-` in Options.td. As of commit 6a75496836ea14bcfd2f4b59d35a1cad4ac58cee, these flags are not currently forwarded to gfortran anyway. The default fixed line length in FrontendOptions is 72, based off the current default in Fortran::parser::Options. The line length cannot be set to a negative integer, or a positive integer less than 7 excluding 0, consistent with the behaviour of gfortran. This patch does not add `-ffree-line-length-n` as Fortran::parser::Options does not have a variable for free form columns. Whilst the `fixedFormColumns` variable is used in f18 for `-ffree-line-length-n`, f18 only allows `-ffree-line-length-none`/`-ffree-line-length-0` and not a user-specified value. `fixedFormcolumns` cannot be used in the new driver as it is ignored in the frontend when dealing with free form files. Summary of changes: - Remove -fno-fixed-form and -fno-free-form from Options.td - Make -ffixed-form, -ffree-form and -ffree-line-length-n FlangOnlyOption in Options.td - Create AddFortranDialectOptions method in Flang.cpp - Create FortranForm enum in FrontendOptions.h - Add fortranForm_ and fixedFormColumns_ to Fortran::frontend::FrontendOptions - Update fixed-form-test.f so that it guarantees that it fails when forced as a free form file to better facilitate testing. Differential Revision: https://reviews.llvm.org/D95460
2021-01-27 00:27:30 +08:00
! CHECK-NEXT: -ffixed-form Process source files in fixed form
! CHECK-NEXT: -ffixed-line-length=<value>
! CHECK-NEXT: Use <value> as character line width in fixed mode
! CHECK-NEXT: -ffree-form Process source files in free form
[flang][driver] Add extension options and -finput-charset Add the following options: * -fimplicit-none and -fno-implicit-none * -fbackslash and -fno-backslash * -flogical-abbreviations and -fno-logical-abbreviations * -fxor-operator and -fno-xor-operator * -falternative-parameter-statement * -finput-charset=<value> Summary of changes: - Enable extensions in CompilerInvocation#ParseFrontendArgs - Add encoding_ to Fortran::frontend::FrontendOptions - Add encoding to Fortran::parser::Options Differential Revision: https://reviews.llvm.org/D96407
2021-02-05 05:11:22 +08:00
! CHECK-NEXT: -fimplicit-none No implicit typing allowed unless overridden by IMPLICIT statements
! CHECK-NEXT: -finput-charset=<value> Specify the default character set for source files
[flang][driver] Add -fintrinsic-modules-path option Reviewed By: awarzynski Differential Revision: https://reviews.llvm.org/D97080
2021-03-24 00:24:57 +08:00
! CHECK-NEXT: -fintrinsic-modules-path <dir>
! CHECK-NEXT: Specify where to find the compiled intrinsic modules
[flang][driver] Add options for -fdefault* and -flarge-sizes Add support for the following Fortran dialect options: - -default* - -flarge-sizes It also adds two test cases: # For checking whether `flang-new` is passing options correctly to `flang-new -fc1`. # For checking if `fdefault-` arguments are processed properly. Also moves the Dialect related option parsing to a dedicated function and adds a member `defaultKinds()` to `CompilerInvocation` Depends on: D96032 Differential Revision: https://reviews.llvm.org/D96344
2021-03-04 00:28:11 +08:00
! CHECK-NEXT: -flarge-sizes Use INTEGER(KIND=8) for the result type in size-related intrinsics
[flang][driver] Add extension options and -finput-charset Add the following options: * -fimplicit-none and -fno-implicit-none * -fbackslash and -fno-backslash * -flogical-abbreviations and -fno-logical-abbreviations * -fxor-operator and -fno-xor-operator * -falternative-parameter-statement * -finput-charset=<value> Summary of changes: - Enable extensions in CompilerInvocation#ParseFrontendArgs - Add encoding_ to Fortran::frontend::FrontendOptions - Add encoding to Fortran::parser::Options Differential Revision: https://reviews.llvm.org/D96407
2021-02-05 05:11:22 +08:00
! CHECK-NEXT: -flogical-abbreviations Enable logical abbreviations
[flang][driver] Refactor boolean options For boolean options, e.g. `-fxor-operator`/`-fno-xor-operator`, we ought to be using TableGen multi-classes. This way, we only have to write one definition to have both forms auto-generated. This patch refactors all of Flang's boolean options to use two new multi-classes: `OptInFC1FFOption` and `OptOutFC1FFOption`. These multi-classes are based on `OptInFFOption`/`OptOutFFOption`, respectively. I've also simplified the processing of the updated options in CompilerInvocation.cpp. With the new approach, "empty" help text (i.e. no `HelpText`) is now replaced with an empty string (i.e. HelpText<"">). When running flang-new --help, that's considered as non-empty help messages, which is then printed (that's controlled by `printHelp` from llvm/lib/Option/OptTable.cpp). This means that with this patch, flang-new --help will start printing e.g. -fno-backslash, even though there is no actual help text to print for this option (apart from the empty string ""). Tests are updated accordingly. Note that with this patch, both `-fxor-operator` and `-fno-xor-operator` (and other boolean options refactored here) remain available in `flang-new` and `flang-new -fc1`. In this respect, nothing changes. In a forthcoming patch, I will refine this so that `flang-new -fc1` only accepts `-ffoo` (`OptInFC1FFOption`) or `-fno-foo` (`OptOutCC1FFOption`). For clarity, `OptInFFOption`/`OptOutFFOption` are renamed as `OptInCC1FFOption`/`OptOutCC1FFOption`, respectively. Otherwise, this is an NFC from Clang's perspective. Differential Revision: https://reviews.llvm.org/D105881
2021-06-30 18:57:48 +08:00
! CHECK-NEXT: -fno-color-diagnostics Disable colors in diagnostics
[flang][driver] Add support for -fopenmp and -fopenacc Add support for the following options: * -fopenmp * -fopenacc Update OpenMP and OpenACC semantics tests to use the new driver if it is built, otherwise use f18. OpenMP tests that include `use omp_lib` or run `test_symbols.sh` have not been updated as they require options `-intrinsic-module-directory` and `-funparse-with-symbols` which are currently not implemented in the new driver. Similarly OpenACC tests that run `test_symbols.sh` have not been updated. This patch also moves semanticsContext to CompilerInvocation and creates it in CompilerInvocation#setSemanticsOpts so that the semantics context can use Fortran::parser::Options#features. Summary of changes: - Move semanticsContext to CompilerInvocation.h - Update OpenMP and OpenACC semantics tests that do not rely on `-intrinsic-module-directory` and `-funparse-with-symbols` to use %flang Differential Revision: https://reviews.llvm.org/D96032
2021-02-10 17:24:45 +08:00
! CHECK-NEXT: -fopenacc Enable OpenACC
! CHECK-NEXT: -fopenmp Parse OpenMP pragmas and generate parallel code.
[flang][driver] Add extension options and -finput-charset Add the following options: * -fimplicit-none and -fno-implicit-none * -fbackslash and -fno-backslash * -flogical-abbreviations and -fno-logical-abbreviations * -fxor-operator and -fno-xor-operator * -falternative-parameter-statement * -finput-charset=<value> Summary of changes: - Enable extensions in CompilerInvocation#ParseFrontendArgs - Add encoding_ to Fortran::frontend::FrontendOptions - Add encoding to Fortran::parser::Options Differential Revision: https://reviews.llvm.org/D96407
2021-02-05 05:11:22 +08:00
! CHECK-NEXT: -fxor-operator Enable .XOR. as a synonym of .NEQV.
[Flang][Driver] Add infrastructure for basic frontend actions and file I/O This patch introduces the dependencies required to read and manage input files provided by the command line option. It also adds the infrastructure to create and write to output files. The output is sent to either stdout or a file (specified with the `-o` flag). Separately, in order to be able to test the code for file I/O, it adds infrastructure to create frontend actions. As a basic testable example, it adds the `InputOutputTest` FrontendAction. The sole purpose of this action is to read a file from the command line and print it either to stdout or the output file. This action is run by using the `-test-io` flag also introduced in this patch (available for `flang-new` and `flang-new -fc1`). With this patch: ``` flang-new -test-io input-file.f90 ``` will read input-file.f90 and print it in the output file. The `InputOutputTest` frontend action has been introduced primarily to facilitate testing. It is hidden from users (i.e. it's only displayed with `--help-hidden`). Currently Clang doesn’t have an equivalent action. `-test-io` is used to trigger the InputOutputTest action in the Flang frontend driver. This patch makes sure that “flang-new” forwards it to “flang-new -fc1" by creating a preprocessor job. However, in Flang.cpp, `-test-io` is passed to “flang-new -fc1” without `-E`. This way we make sure that the preprocessor is _not_ run in the frontend driver. This is the desired behaviour: `-test-io` should only read the input file and print it to the output stream. co-authored-by: Andrzej Warzynski <andrzej.warzynski@arm.com> Differential Revision: https://reviews.llvm.org/D87989
2020-10-24 19:33:19 +08:00
! CHECK-NEXT: -help Display available options
[flang][driver] Add support for `-I` in the new driver Add support for option -I in the new Flang driver. This will allow for included headers and module files in other directories, as the default search path is currently the working folder. The behaviour of this is consistent with the current f18 driver, where the current folder (i.e. ".") has the highest priority followed by the order of '-I's taking priority from first to last. Summary of changes: - Add SearchDirectoriesFromDashI to PreprocessorOptions, to be forwarded into the parser's searchDirectories - Add header files and non-functional module files to be used in regression tests. The module files are just text files and are used to demonstrated that paths specified with `-I` are taken into account when searching for .mod files. Differential Revision: https://reviews.llvm.org/D93453
2021-01-19 18:01:38 +08:00
! CHECK-NEXT: -I <dir> Add directory to the end of the list of include search paths
[flang][driver] Add support for `-J/-module-dir` Add support for option -J/-module-dir in the new Flang driver. This will allow for including module files in other directories, as the default search path is currently the working folder. This also provides an option of storing the output module in the specified folder. Differential Revision: https://reviews.llvm.org/D95448
2021-02-05 00:13:04 +08:00
! CHECK-NEXT: -module-dir <dir> Put MODULE files in <dir>
[flang][driver] Add support for `-cpp/-nocpp` This patch adds support for the `-cpp` and `-nocpp` flags. The implemented semantics match f18 (i.e. the "throwaway" driver), but are different to gfortran. In Flang the preprocessor is always run. Instead, `-cpp/-nocpp` are used to control whether predefined and command-line preprocessor macro definitions are enabled or not. In practice this is sufficient to model gfortran`s `-cpp/-nocpp`. In the absence of `-cpp/-nocpp`, the driver will use the extension of the input file to decide whether to include the standard macro predefinitions. gfortran's documentation [1] was used to decide which file extension to use for this. The logic mentioned above was added in FrontendAction::BeginSourceFile. That's relatively late in the driver set-up, but this roughly where the name of the input file becomes available. The logic for deciding between fixed and free form works in a similar way and was also moved to FrontendAction::BeginSourceFile for consistency (and to reduce code-duplication). The `-cpp/-nocpp` flags are respected also when the input is read from stdin. This is different to: * gfortran (behaves as if `-cpp` was used) * f18 (behaves as if `-nocpp` was used) Starting with this patch, file extensions are significant and some test files had to be renamed to reflect that. Where possible, preprocessor tests were updated so that they can be shared between `f18` and `flang-new`. This was implemented on top of adding new test for `-cpp/-nocpp`. [1] https://gcc.gnu.org/onlinedocs/gcc/Overall-Options.html Reviewed By: kiranchandramohan Differential Revision: https://reviews.llvm.org/D99292
2021-04-07 19:42:37 +08:00
! CHECK-NEXT: -nocpp Disable predefined and command line preprocessor macros
[Flang][Driver] Add infrastructure for basic frontend actions and file I/O This patch introduces the dependencies required to read and manage input files provided by the command line option. It also adds the infrastructure to create and write to output files. The output is sent to either stdout or a file (specified with the `-o` flag). Separately, in order to be able to test the code for file I/O, it adds infrastructure to create frontend actions. As a basic testable example, it adds the `InputOutputTest` FrontendAction. The sole purpose of this action is to read a file from the command line and print it either to stdout or the output file. This action is run by using the `-test-io` flag also introduced in this patch (available for `flang-new` and `flang-new -fc1`). With this patch: ``` flang-new -test-io input-file.f90 ``` will read input-file.f90 and print it in the output file. The `InputOutputTest` frontend action has been introduced primarily to facilitate testing. It is hidden from users (i.e. it's only displayed with `--help-hidden`). Currently Clang doesn’t have an equivalent action. `-test-io` is used to trigger the InputOutputTest action in the Flang frontend driver. This patch makes sure that “flang-new” forwards it to “flang-new -fc1" by creating a preprocessor job. However, in Flang.cpp, `-test-io` is passed to “flang-new -fc1” without `-E`. This way we make sure that the preprocessor is _not_ run in the frontend driver. This is the desired behaviour: `-test-io` should only read the input file and print it to the output stream. co-authored-by: Andrzej Warzynski <andrzej.warzynski@arm.com> Differential Revision: https://reviews.llvm.org/D87989
2020-10-24 19:33:19 +08:00
! CHECK-NEXT: -o <file> Write output to <file>
[flang][driver] Add options for -std=f2018 Reviewed By: awarzynski Differential Revision: https://reviews.llvm.org/D97119
2021-03-26 01:02:05 +08:00
! CHECK-NEXT: -pedantic Warn on language extensions
[flang] Produce proper "preprocessor output" for -E option Rename the current -E option to "-E -Xflang -fno-reformat". Add a new Parsing::EmitPreprocessedSource() routine to convert the cooked character stream output of the prescanner back to something more closely resembling output from a traditional preprocessor; call this new routine when -E appears. The new -E output is suitable for use as fixed form Fortran source to compilation by (one hopes) any Fortran compiler. If the original top-level source file had been free form source, the output will be suitable for use as free form source as well; otherwise there may be diagnostics about missing spaces if they were indeed absent in the original fixed form source. Unless the -P option appears, #line directives are interspersed with the output (but be advised, f18 will ignore these if presented with them in a later compilation). An effort has been made to preserve original alphabetic character case and source indentation. Add -P and -fno-reformat to the new drivers. Tweak test options to avoid confusion with prior -E output; use -fno-reformat where needed, but prefer to keep -E, sometimes in concert with -P, on most, updating expected results accordingly. Differential Revision: https://reviews.llvm.org/D106727
2021-07-24 07:41:04 +08:00
! CHECK-NEXT: -P Disable linemarker output in -E mode
[flang][driver] Add options for -std=f2018 Reviewed By: awarzynski Differential Revision: https://reviews.llvm.org/D97119
2021-03-26 01:02:05 +08:00
! CHECK-NEXT: -std=<value> Language standard to compile for
[flang][driver] Add support for `-D`, `-U` Add support for options -D and -U in the new Flang driver. Summary of changes: - Create PreprocessorOptions, to be used by the driver then translated into Fortran::parser::Options - Create CompilerInvocation::setFortranOpts to pass preprocessor options into the parser options - Add a dedicated method, Flang::AddPreprocessingOptions, to extract preprocessing options from the driver arguments into the preprocessor command arguments Macros specified like -DName will default to definition 1. When defining macros, the new driver will drop anything after an end-of-line character. This is consistent with gfortran and clang, but different to what currently f18 does. However, flang (which is a bash wrapper for f18), also drops everything after an end-of-line character. So gfortran-like behaviour felt like the natural choice. Test is added to demonstrate this behaviour. Reviewed By: awarzynski Differential Revision: https://reviews.llvm.org/D93401
2021-01-06 23:42:24 +08:00
! CHECK-NEXT: -U <macro> Undefine macro <macro>
[Flang][Driver] Add infrastructure for basic frontend actions and file I/O This patch introduces the dependencies required to read and manage input files provided by the command line option. It also adds the infrastructure to create and write to output files. The output is sent to either stdout or a file (specified with the `-o` flag). Separately, in order to be able to test the code for file I/O, it adds infrastructure to create frontend actions. As a basic testable example, it adds the `InputOutputTest` FrontendAction. The sole purpose of this action is to read a file from the command line and print it either to stdout or the output file. This action is run by using the `-test-io` flag also introduced in this patch (available for `flang-new` and `flang-new -fc1`). With this patch: ``` flang-new -test-io input-file.f90 ``` will read input-file.f90 and print it in the output file. The `InputOutputTest` frontend action has been introduced primarily to facilitate testing. It is hidden from users (i.e. it's only displayed with `--help-hidden`). Currently Clang doesn’t have an equivalent action. `-test-io` is used to trigger the InputOutputTest action in the Flang frontend driver. This patch makes sure that “flang-new” forwards it to “flang-new -fc1" by creating a preprocessor job. However, in Flang.cpp, `-test-io` is passed to “flang-new -fc1” without `-E`. This way we make sure that the preprocessor is _not_ run in the frontend driver. This is the desired behaviour: `-test-io` should only read the input file and print it to the output stream. co-authored-by: Andrzej Warzynski <andrzej.warzynski@arm.com> Differential Revision: https://reviews.llvm.org/D87989
2020-10-24 19:33:19 +08:00
! CHECK-NEXT: --version Print version information
[flang][driver] Add options for -Werror With the option given, warnings are treated as error. Reviewed By: awarzynski Differential Revision: https://reviews.llvm.org/D98657
2021-04-06 00:41:46 +08:00
! CHECK-NEXT: -W<warning> Enable the specified warning
[flang][driver] Add -Xflang and make -test-io a frontend-only flang This patch adds support for `-Xflang` in `flang-new`. The semantics are identical to `-Xclang`. With the addition of `-Xflang`, we can modify `-test-io` to be a compiler-frontend only flag. This makes more sense, this flag is: * very frontend specific * to be used for development and testing only * not to be exposed to the end user Originally we added it to the compiler driver, `flang-new`, in order to facilitate testing. With `-Xflang` this is no longer needed. Tests are updated accordingly. Differential Revision: https://reviews.llvm.org/D96864
2021-02-17 22:13:29 +08:00
! CHECK-NEXT: -Xflang <arg> Pass <arg> to the flang compiler
[Flang][Driver] Add infrastructure for basic frontend actions and file I/O This patch introduces the dependencies required to read and manage input files provided by the command line option. It also adds the infrastructure to create and write to output files. The output is sent to either stdout or a file (specified with the `-o` flag). Separately, in order to be able to test the code for file I/O, it adds infrastructure to create frontend actions. As a basic testable example, it adds the `InputOutputTest` FrontendAction. The sole purpose of this action is to read a file from the command line and print it either to stdout or the output file. This action is run by using the `-test-io` flag also introduced in this patch (available for `flang-new` and `flang-new -fc1`). With this patch: ``` flang-new -test-io input-file.f90 ``` will read input-file.f90 and print it in the output file. The `InputOutputTest` frontend action has been introduced primarily to facilitate testing. It is hidden from users (i.e. it's only displayed with `--help-hidden`). Currently Clang doesn’t have an equivalent action. `-test-io` is used to trigger the InputOutputTest action in the Flang frontend driver. This patch makes sure that “flang-new” forwards it to “flang-new -fc1" by creating a preprocessor job. However, in Flang.cpp, `-test-io` is passed to “flang-new -fc1” without `-E`. This way we make sure that the preprocessor is _not_ run in the frontend driver. This is the desired behaviour: `-test-io` should only read the input file and print it to the output stream. co-authored-by: Andrzej Warzynski <andrzej.warzynski@arm.com> Differential Revision: https://reviews.llvm.org/D87989
2020-10-24 19:33:19 +08:00
!-------------------------------------------------------------
! EXPECTED OUTPUT FOR FLANG DRIVER (flang-new)
!-------------------------------------------------------------
! ERROR-FLANG: error: unknown argument '-help-hidden'; did you mean '--help-hidden'?
!-------------------------------------------------------------
! EXPECTED OUTPUT FOR FLANG FRONTEND DRIVER (flang-new -fc1)
!-------------------------------------------------------------
! Frontend driver -help-hidden is not supported
! ERROR-FLANG-FC1: error: unknown argument: '{{.*}}'