3338ef93b0
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
39 lines
1.8 KiB
Fortran
39 lines
1.8 KiB
Fortran
! Ensure the driver correctly switches between fixed and free form based on the file extension.
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! This test exploits the fact that the prescanner treats whitespace differently for free
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! and fixed form input files.
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!--------------------------
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! FLANG DRIVER (flang)
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!--------------------------
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! RUN: %flang -E -Xflang -fno-reformat %S/Inputs/free-form-test.f90 2>&1 | FileCheck %s --check-prefix=FREEFORM
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! RUN: %flang -E -Xflang -fno-reformat %S/Inputs/fixed-form-test.f 2>&1 | FileCheck %s --check-prefix=FIXEDFORM
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! RUN: %flang -E -Xflang -fno-reformat %S/Inputs/free-form-test.f90 %S/Inputs/fixed-form-test.f 2>&1 | FileCheck %s --check-prefix=MULTIPLEFORMS
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!-----------------------------------------
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! FRONTEND FLANG DRIVER (flang_fc1)
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!-----------------------------------------
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! RUN: %flang_fc1 -E -fno-reformat %S/Inputs/free-form-test.f90 2>&1 | FileCheck %s --check-prefix=FREEFORM
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! RUN: %flang_fc1 -E -fno-reformat %S/Inputs/fixed-form-test.f 2>&1 | FileCheck %s --check-prefix=FIXEDFORM
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! RUN: %flang_fc1 -E -fno-reformat %S/Inputs/free-form-test.f90 %S/Inputs/fixed-form-test.f 2>&1 | FileCheck %s --check-prefix=MULTIPLEFORMS
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!-------------------------------------
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! EXPECTED OUTPUT FOR A FREE FORM FILE
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!-------------------------------------
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! FREEFORM:program freeform
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! FREEFORM-NOT:programfixedform
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!---------------------------------------
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! EXPECTED OUTPUT FOR A FIXED FORM FILE
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!---------------------------------------
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! FIXEDFORM:programfixedform
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! FIXEDFORM-NOT:program freeform
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!------------------------------------------------
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! EXPECTED OUTPUT FOR 2 FILES OF DIFFERENT FORMS
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!------------------------------------------------
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! MULTIPLEFORMS:program freeform
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! MULTIPLEFORMS-NOT:programfixedform
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! MULTIPLEFORMS-NEXT:end
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! MULTIPLEFORMS-NEXT:programfixedform
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! MULTIPLEFORMS-NOT:program freeform
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