d18a9aeae9
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
72 lines
3.0 KiB
Fortran
72 lines
3.0 KiB
Fortran
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!--------------------------
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! FLANG DRIVER (flang)
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!--------------------------
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! NOTE: Use `-E` so that the compiler driver stops after the 1st compilation phase, preprocessing. That's all we need.
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! TEST 1: Both input files are processed (output is printed to stdout)
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! RUN: %flang -E %s %S/Inputs/hello-world.f90 | FileCheck %s --match-full-lines -check-prefix=FLANG
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! TEST 2: None of the files is processed (not possible to specify the output file when multiple input files are present)
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! RUN: not %flang -E -o - %S/Inputs/hello-world.f90 %s 2>&1 | FileCheck %s --match-full-lines -check-prefix=ERROR
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! RUN: not %flang -E -o %t %S/Inputs/hello-world.f90 %s 2>&1 | FileCheck %s --match-full-lines -check-prefix=ERROR
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!----------------------------------------
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! FLANG FRONTEND DRIVER (flang -fc1)
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!----------------------------------------
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! TEST 3: Both input files are processed
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! This particular test case generates output files in the same directory as the input files. We need to copy the input files into a
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! temporary directory to avoid polluting the source directory.
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! RUN: rm -rf %t-dir && mkdir -p %t-dir && cd %t-dir
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! RUN: cp %s . && cp %S/Inputs/hello-world.f90 .
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! RUN: %flang_fc1 -test-io hello-world.f90 multiple-input-files.f90 2>&1 \
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! RUN: && FileCheck %s --input-file=multiple-input-files.txt --match-full-lines -check-prefix=FC1-OUTPUT1 \
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! RUN: && FileCheck %s --input-file=hello-world.txt --match-full-lines -check-prefix=FC1-OUTPUT2
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! TEST 4: Only the last input file is processed
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! RUN: %flang_fc1 -test-io %s %S/Inputs/hello-world.f90 -o %t 2>&1 \
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! RUN: && FileCheck %s --input-file=%t --match-full-lines -check-prefix=FC1-OUTPUT3
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!-----------------------
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! EXPECTED OUTPUT
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!-----------------------
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! TEST 1: By default, `flang` prints the output from all input files to
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! stdout
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! FLANG-LABEL: Program arithmetic
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! FLANG-NEXT: Integer :: i, j
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! FLANG-NEXT: i = 2; j = 3; i= i * j;
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! FLANG-NEXT: End Program arithmetic
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! FLANG-LABEL: program hello
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! FLANG-NEXT: implicit none
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! FLANG-NEXT: write(*,*) 'Hello world!'
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! FLANG-NEXT:end program hello
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! TEST 2: `-o` does not when multiple input files are present
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! ERROR: flang-new: error: cannot specify -o when generating multiple output files
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! TEST 3: The output file _was not_ specified - `flang_fc1` will process all
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! input files and generate one output file for every input file.
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! FC1-OUTPUT1-LABEL: Program arithmetic
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! FC1-OUTPUT1-NEXT: Integer :: i, j
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! FC1-OUTPUT1-NEXT: i = 2; j = 3; i= i * j;
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! FC1-OUTPUT1-NEXT: End Program arithmetic
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! FC1-OUTPUT2-LABEL:program hello
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! FC1-OUTPUT2-NEXT: implicit none
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! FC1-OUTPUT2-NEXT: write(*,*) 'Hello world!'
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! FC1-OUTPUT2-NEXT:end program hello
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! TEST 4: The output file _was_ specified - `flang_fc1` will process only
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! the last input file and generate the corresponding output.
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! FC1-OUTPUT3-LABEL:program hello
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! FC1-OUTPUT3-NEXT: implicit none
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! FC1-OUTPUT3-NEXT: write(*,*) 'Hello world!'
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! FC1-OUTPUT3-NEXT:end program hello
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Program arithmetic
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Integer :: i, j
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i = 2; j = 3; i= i * j;
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End Program arithmetic
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