FarisRehman created this revision.
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Herald added a subscriber: dang.
Herald added a reviewer: awarzynski.
Herald added a reviewer: jansvoboda11.
FarisRehman requested review of this revision.
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Herald added a subscriber: cfe-commits.
Add support for the following layout options:
- -ffree-form
- -ffixed-form
- -ffixed-line-length-n
The default fixed line length is 72, based off the current default.
This patch does not add `-ffree-line-length-n` as Fortran::parser::Options does
not have a variable for free form columns.
Whilst `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.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D95460
Files:
clang/include/clang/Driver/Options.td
clang/lib/Driver/ToolChains/Flang.cpp
flang/include/flang/Frontend/FrontendOptions.h
flang/lib/Frontend/CompilerInstance.cpp
flang/lib/Frontend/CompilerInvocation.cpp
flang/test/Flang-Driver/Inputs/fixed-form-test.f
flang/test/Flang-Driver/Inputs/fixed-line-length-test.f
flang/test/Flang-Driver/driver-help-hidden.f90
flang/test/Flang-Driver/driver-help.f90
flang/test/Flang-Driver/fixed-free-flag.f90
flang/test/Flang-Driver/fixed-line-length.f90
Index: flang/test/Flang-Driver/fixed-line-length.f90
===================================================================
--- /dev/null
+++ flang/test/Flang-Driver/fixed-line-length.f90
@@ -0,0 +1,43 @@
+! Ensure argument -ffixed-line-length-n works as expected.
+
+! REQUIRES: new-flang-driver
+
+!--------------------------
+! FLANG DRIVER (flang-new)
+!--------------------------
+! RUN: %flang-new -E %S/Inputs/fixed-line-length-test.f 2>&1 | FileCheck %s --check-prefix=DEFAULTLENGTH
+! RUN: not %flang-new -E -ffixed-line-length-3 %S/Inputs/fixed-line-length-test.f 2>&1 | FileCheck %s --check-prefix=INVALIDLENGTH
+! RUN: %flang-new -E -ffixed-line-length-none %S/Inputs/fixed-line-length-test.f 2>&1 | FileCheck %s --check-prefix=UNLIMITEDLENGTH
+! RUN: %flang-new -E -ffixed-line-length-0 %S/Inputs/fixed-line-length-test.f 2>&1 | FileCheck %s --check-prefix=UNLIMITEDLENGTH
+! RUN: %flang-new -E -ffixed-line-length-13 %S/Inputs/fixed-line-length-test.f 2>&1 | FileCheck %s --check-prefix=LENGTH13
+
+!----------------------------------------
+! FRONTEND FLANG DRIVER (flang-new -fc1)
+!----------------------------------------
+! RUN: %flang-new -fc1 -E %S/Inputs/fixed-line-length-test.f 2>&1 | FileCheck %s --check-prefix=DEFAULTLENGTH
+! RUN: not %flang-new -fc1 -E -ffixed-line-length-3 %S/Inputs/fixed-line-length-test.f 2>&1 | FileCheck %s --check-prefix=INVALIDLENGTH
+! RUN: %flang-new -fc1 -E -ffixed-line-length-none %S/Inputs/fixed-line-length-test.f 2>&1 | FileCheck %s --check-prefix=UNLIMITEDLENGTH
+! RUN: %flang-new -fc1 -E -ffixed-line-length-0 %S/Inputs/fixed-line-length-test.f 2>&1 | FileCheck %s --check-prefix=UNLIMITEDLENGTH
+! RUN: %flang-new -fc1 -E -ffixed-line-length-13 %S/Inputs/fixed-line-length-test.f 2>&1 | FileCheck %s --check-prefix=LENGTH13
+
+!-------------------------------------
+! EXPECTED OUTPUT WITH DEFAULT LENGTH
+!-------------------------------------
+! The line should be trimmed to 72 characters when reading based on the default value of fixed line length.
+! DEFAULTLENGTH: programaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+!-----------------------------------------
+! EXPECTED OUTPUT WITH LENGTH LESS THAN 7
+!-----------------------------------------
+! INVALIDLENGTH: invalid value '{{(-)?[0-9]+}}'
+
+!---------------------------------------
+! EXPECTED OUTPUT WITH UNLIMITED LENGTH
+!---------------------------------------
+! The line should not be trimmed and so 73 characters (including spaces) should be read.
+! UNLIMITEDLENGTH: programaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+!--------------------------------
+! EXPECTED OUTPUT WITH LENGTH 13
+!--------------------------------
+! LENGTH13: program
Index: flang/test/Flang-Driver/fixed-free-flag.f90
===================================================================
--- /dev/null
+++ flang/test/Flang-Driver/fixed-free-flag.f90
@@ -0,0 +1,25 @@
+! Ensure arguments -ffree-form and -ffixed-form work as expected.
+
+! REQUIRES: new-flang-driver
+
+!--------------------------
+! FLANG DRIVER (flang-new)
+!--------------------------
+! RUN: not %flang-new -fsyntax-only -ffree-form %S/Inputs/fixed-form-test.f %S/Inputs/free-form-test.f90 2>&1 | FileCheck %s --check-prefix=FREEFORM
+! RUN: %flang-new -fsyntax-only -ffixed-form %S/Inputs/free-form-test.f90 %S/Inputs/fixed-form-test.f 2>&1 | FileCheck %s --check-prefix=FIXEDFORM
+
+!----------------------------------------
+! FRONTEND FLANG DRIVER (flang-new -fc1)
+!----------------------------------------
+! RUN: not %flang-new -fc1 -fsyntax-only -ffree-form %S/Inputs/fixed-form-test.f %S/Inputs/free-form-test.f90 2>&1 | FileCheck %s --check-prefix=FREEFORM
+! RUN: %flang-new -fc1 -fsyntax-only -ffixed-form %S/Inputs/free-form-test.f90 %S/Inputs/fixed-form-test.f 2>&1 | FileCheck %s --check-prefix=FIXEDFORM
+
+!------------------------------------
+! EXPECTED OUTPUT FOR FREE FORM MODE
+!------------------------------------
+! FREEFORM:error: Could not parse
+
+!-------------------------------------
+! EXPECTED OUTPUT FOR FIXED FORM MODE
+!-------------------------------------
+! FIXEDFORM:free-form-test.f90:1:1: Character in fixed-form label field must be a digit
Index: flang/test/Flang-Driver/driver-help.f90
===================================================================
--- flang/test/Flang-Driver/driver-help.f90
+++ flang/test/Flang-Driver/driver-help.f90
@@ -23,6 +23,8 @@
! HELP-NEXT: -D <macro>=<value> Define <macro> to <value> (or 1 if <value> omitted)
! HELP-NEXT: -E Only run the preprocessor
! HELP-NEXT: -fcolor-diagnostics Enable colors in diagnostics
+! HELP-NEXT: -ffixed-line-length-<value>
+! HELP-NEXT: Set column after which characters are ignored
! HELP-NEXT: -fno-color-diagnostics Disable colors in diagnostics
! HELP-NEXT: -help Display available options
! HELP-NEXT: -I <dir> Add directory to the end of the list of include search paths
@@ -39,6 +41,8 @@
! HELP-FC1-NEXT: -D <macro>=<value> Define <macro> to <value> (or 1 if <value> omitted)
! HELP-FC1-NEXT: -emit-obj Emit native object files
! HELP-FC1-NEXT: -E Only run the preprocessor
+! HELP-FC1-NEXT: -ffixed-line-length-<value>
+! HELP-FC1-NEXT: Set column after which characters are ignored
! HELP-FC1-NEXT: -help Display available options
! HELP-FC1-NEXT: -I <dir> Add directory to the end of the list of include search paths
! HELP-FC1-NEXT: -o <file> Write output to <file>
Index: flang/test/Flang-Driver/driver-help-hidden.f90
===================================================================
--- flang/test/Flang-Driver/driver-help-hidden.f90
+++ flang/test/Flang-Driver/driver-help-hidden.f90
@@ -23,6 +23,8 @@
! CHECK-NEXT: -D <macro>=<value> Define <macro> to <value> (or 1 if <value> omitted)
! CHECK-NEXT: -E Only run the preprocessor
! CHECK-NEXT: -fcolor-diagnostics Enable colors in diagnostics
+! CHECK-NEXT: -ffixed-line-length-<value>
+! CHECK-NEXT: Set column after which characters are ignored
! CHECK-NEXT: -fno-color-diagnostics Disable colors in diagnostics
! CHECK-NEXT: -help Display available options
! CHECK-NEXT: -I <dir> Add directory to the end of the list of include search paths
Index: flang/test/Flang-Driver/Inputs/fixed-line-length-test.f
===================================================================
--- /dev/null
+++ flang/test/Flang-Driver/Inputs/fixed-line-length-test.f
@@ -0,0 +1,3 @@
+! The length of the line below is exactly 73 characters
+ program aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+ end
\ No newline at end of file
Index: flang/test/Flang-Driver/Inputs/fixed-form-test.f
===================================================================
--- flang/test/Flang-Driver/Inputs/fixed-form-test.f
+++ flang/test/Flang-Driver/Inputs/fixed-form-test.f
@@ -1,2 +1,3 @@
program FixedForm
+c end
end
Index: flang/lib/Frontend/CompilerInvocation.cpp
===================================================================
--- flang/lib/Frontend/CompilerInvocation.cpp
+++ flang/lib/Frontend/CompilerInvocation.cpp
@@ -158,6 +158,45 @@
opts.inputs_.emplace_back(std::move(inputs[i]), ik);
}
+
+ // Set fortranForm_ based on options -ffree-form and -ffixed-form.
+ for (const auto *currentArg :
+ args.filtered(clang::driver::options::OPT_ffixed_form,
+ clang::driver::options::OPT_ffree_form)) {
+ if (currentArg->getOption().matches(
+ clang::driver::options::OPT_ffixed_form)) {
+ opts.fortranForm_ = FortranForm::FixedForm;
+ } else {
+ opts.fortranForm_ = FortranForm::FreeForm;
+ }
+ currentArg->claim();
+ }
+
+ // Set fixedFormColumns_ based on -ffixed-line-length-n
+ for (const auto *currentArg :
+ args.filtered(clang::driver::options::OPT_ffixed_line_length_VALUE)) {
+ llvm::StringRef argValue = llvm::StringRef(currentArg->getValue());
+ std::int64_t columns = -1;
+ if (argValue == "none") {
+ columns = 0;
+ } else if (argValue.getAsInteger(10, columns)) {
+ columns = -1;
+ }
+ if (columns < 0) {
+ diags.Report(clang::diag::err_drv_invalid_value_with_suggestion)
+ << currentArg->getOption().getName() << currentArg->getValue()
+ << "value must be 'none' or a non-negative integer";
+ } else if (columns == 0) {
+ opts.fixedFormColumns_ = 1000000;
+ } else if (columns < 7) {
+ diags.Report(clang::diag::err_drv_invalid_value_with_suggestion)
+ << currentArg->getOption().getName() << currentArg->getValue()
+ << "value must be at least seven";
+ } else {
+ opts.fixedFormColumns_ = columns;
+ }
+ currentArg->claim();
+ }
return dashX;
}
@@ -274,8 +313,16 @@
void CompilerInvocation::setFortranOpts() {
auto &fortranOptions = fortranOpts();
+ const auto &frontendOptions = frontendOpts();
const auto &preprocessorOptions = preprocessorOpts();
+ if (frontendOptions.fortranForm_ == FortranForm::FixedForm) {
+ fortranOptions.isFixedForm = true;
+ } else if (frontendOptions.fortranForm_ == FortranForm::FreeForm) {
+ fortranOptions.isFixedForm = false;
+ }
+ fortranOptions.fixedFormColumns = frontendOptions.fixedFormColumns_;
+
collectMacroDefinitions(preprocessorOptions, fortranOptions);
fortranOptions.searchDirectories.insert(
Index: flang/lib/Frontend/CompilerInstance.cpp
===================================================================
--- flang/lib/Frontend/CompilerInstance.cpp
+++ flang/lib/Frontend/CompilerInstance.cpp
@@ -148,12 +148,14 @@
// Run the frontend action `act` for every input file.
for (const FrontendInputFile &fif : frontendOpts().inputs_) {
if (act.BeginSourceFile(*this, fif)) {
- // Switch between fixed and free form format based on the input file
- // extension. Ideally we should have all Fortran options set before
- // entering this loop (i.e. processing any input files). However, we
- // can't decide between fixed and free form based on the file extension
- // earlier than this.
- invoc.fortranOpts().isFixedForm = fif.IsFixedForm();
+ if (invoc.frontendOpts().fortranForm_ == FortranForm::Unknown) {
+ // Switch between fixed and free form format based on the input file
+ // extension. Ideally we should have all Fortran options set before
+ // entering this loop (i.e. processing any input files). However, we
+ // can't decide between fixed and free form based on the file extension
+ // earlier than this.
+ invoc.fortranOpts().isFixedForm = fif.IsFixedForm();
+ }
if (llvm::Error err = act.Execute()) {
consumeError(std::move(err));
}
Index: flang/include/flang/Frontend/FrontendOptions.h
===================================================================
--- flang/include/flang/Frontend/FrontendOptions.h
+++ flang/include/flang/Frontend/FrontendOptions.h
@@ -74,6 +74,17 @@
Fortran,
};
+enum class FortranForm {
+ /// The user has not specified a form. Base the form off the file extension.
+ Unknown,
+
+ /// -ffree-form
+ FixedForm,
+
+ /// -ffixed-form
+ FreeForm
+};
+
/// The kind of a file that we've been handed as an input.
class InputKind {
private:
@@ -159,6 +170,13 @@
/// The frontend action to perform.
frontend::ActionKind programAction_;
+ // The form to process files in, if specified.
+ FortranForm fortranForm_ = FortranForm::Unknown;
+
+ // The column after which characters are ignored in fixed-form lines in the
+ // source file.
+ int fixedFormColumns_ = 72;
+
public:
FrontendOptions() : showHelp_(false), showVersion_(false) {}
Index: clang/lib/Driver/ToolChains/Flang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Flang.cpp
+++ clang/lib/Driver/ToolChains/Flang.cpp
@@ -21,7 +21,9 @@
void Flang::AddPreprocessingOptions(const ArgList &Args,
ArgStringList &CmdArgs) const {
- Args.AddAllArgs(CmdArgs, {options::OPT_D, options::OPT_U, options::OPT_I});
+ Args.AddAllArgs(CmdArgs, {options::OPT_D, options::OPT_U, options::OPT_I,
+ options::OPT_ffixed_form, options::OPT_ffree_form,
+ options::OPT_ffixed_line_length_VALUE});
}
void Flang::ConstructJob(Compilation &C, const JobAction &JA,
Index: clang/include/clang/Driver/Options.td
===================================================================
--- clang/include/clang/Driver/Options.td
+++ clang/include/clang/Driver/Options.td
@@ -4071,7 +4071,9 @@
def fcheck_EQ : Joined<["-"], "fcheck=">, Group<gfortran_Group>;
def fcoarray_EQ : Joined<["-"], "fcoarray=">, Group<gfortran_Group>;
def fconvert_EQ : Joined<["-"], "fconvert=">, Group<gfortran_Group>;
-def ffixed_line_length_VALUE : Joined<["-"], "ffixed-line-length-">, Group<gfortran_Group>;
+def ffixed_line_length_VALUE : Joined<["-"], "ffixed-line-length-">, Flags<[FlangOption, FC1Option]>,
+ HelpText<"Set column after which characters are ignored in typical fixed-form lines in the source file">,
+ Group<gfortran_Group>;
def ffpe_trap_EQ : Joined<["-"], "ffpe-trap=">, Group<gfortran_Group>;
def ffree_line_length_VALUE : Joined<["-"], "ffree-line-length-">, Group<gfortran_Group>;
def finit_character_EQ : Joined<["-"], "finit-character=">, Group<gfortran_Group>;
@@ -4105,8 +4107,8 @@
defm dump_parse_tree : BooleanFFlag<"dump-parse-tree">, Group<gfortran_Group>;
defm external_blas : BooleanFFlag<"external-blas">, Group<gfortran_Group>;
defm f2c : BooleanFFlag<"f2c">, Group<gfortran_Group>;
-defm fixed_form : BooleanFFlag<"fixed-form">, Group<gfortran_Group>;
-defm free_form : BooleanFFlag<"free-form">, Group<gfortran_Group>;
+defm fixed_form : BooleanFFlag<"fixed-form">, Flags<[FlangOption, FC1Option]>, Group<gfortran_Group>;
+defm free_form : BooleanFFlag<"free-form">, Flags<[FlangOption, FC1Option]>, Group<gfortran_Group>;
defm frontend_optimize : BooleanFFlag<"frontend-optimize">, Group<gfortran_Group>;
defm implicit_none : BooleanFFlag<"implicit-none">, Group<gfortran_Group>;
defm init_local_zero : BooleanFFlag<"init-local-zero">, Group<gfortran_Group>;
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