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llvm-project/flang/test/Flang-Driver/input-from-stdin.f90

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[flang][driver] Fix reading from stdin when using `-test-io` This patch adds logic in the InputOutputTestAction frontend action for reading input from stdin. Without this patch the following fails: ``` flang-new -fc1 -test-io - ``` The implementation of `InputOutputTestAction` is cleaned-up and a test for reading from stdin is added. Note that there's a difference between `-test-io` and e.g. `-E` in terms of file I/O. The frontend action for the former handles all file I/O on it's own. Conversely, the action corresponding to -E relies on the prescanner API to handle this. Currently we can't test reading from stdin for `flang-new -`. In this case `libclangDriver` assumes `-x -c`. This in turn leads to `flang-new -cc1`, which is not supported.
2021-02-05 00:23:42 +08:00
! Verify that reading from stdin works as expected
! REQUIRES: new-flang-driver
!--------------------------
! FLANG DRIVER (flang-new)
!--------------------------
[clang][driver] Set the input type to Fortran when reading from stdin This patch makes sure that for the following invocation of the new Flang driver, clangDriver sets the input type to Fortran: ``` flang-new -E - ``` This change does not affect `clang`, i.e. for the following invocation the input type is set to C: ``` clang -E - ``` This change leverages the fact that for `flang-new` the driver is in Flang mode. Differential Revision: https://reviews.llvm.org/D96777
2021-02-16 21:31:53 +08:00
! Input type is implicit
! RUN: cat %s | flang-new -E - | FileCheck %s --check-prefix=PP-NOT-DEFINED
! RUN: cat %s | flang-new -DNEW -E - | FileCheck %s --check-prefix=PP-DEFINED
! Input type is explicit
! RUN: cat %s | flang-new -E -x f95-cpp-input - | FileCheck %s --check-prefix=PP-NOT-DEFINED
! RUN: cat %s | flang-new -DNEW -E -x f95-cpp-input - | FileCheck %s --check-prefix=PP-DEFINED
[flang][driver] Fix reading from stdin when using `-test-io` This patch adds logic in the InputOutputTestAction frontend action for reading input from stdin. Without this patch the following fails: ``` flang-new -fc1 -test-io - ``` The implementation of `InputOutputTestAction` is cleaned-up and a test for reading from stdin is added. Note that there's a difference between `-test-io` and e.g. `-E` in terms of file I/O. The frontend action for the former handles all file I/O on it's own. Conversely, the action corresponding to -E relies on the prescanner API to handle this. Currently we can't test reading from stdin for `flang-new -`. In this case `libclangDriver` assumes `-x -c`. This in turn leads to `flang-new -cc1`, which is not supported.
2021-02-05 00:23:42 +08:00
!---------------------------------------
! FLANG FRONTEND DRIVER (flang-new -fc1)
!---------------------------------------
[clang][driver] Set the input type to Fortran when reading from stdin This patch makes sure that for the following invocation of the new Flang driver, clangDriver sets the input type to Fortran: ``` flang-new -E - ``` This change does not affect `clang`, i.e. for the following invocation the input type is set to C: ``` clang -E - ``` This change leverages the fact that for `flang-new` the driver is in Flang mode. Differential Revision: https://reviews.llvm.org/D96777
2021-02-16 21:31:53 +08:00
! Test `-E`: for the corresponding frontend actions the driver relies on the prescanner API to handle file I/O
[flang][driver] Fix reading from stdin when using `-test-io` This patch adds logic in the InputOutputTestAction frontend action for reading input from stdin. Without this patch the following fails: ``` flang-new -fc1 -test-io - ``` The implementation of `InputOutputTestAction` is cleaned-up and a test for reading from stdin is added. Note that there's a difference between `-test-io` and e.g. `-E` in terms of file I/O. The frontend action for the former handles all file I/O on it's own. Conversely, the action corresponding to -E relies on the prescanner API to handle this. Currently we can't test reading from stdin for `flang-new -`. In this case `libclangDriver` assumes `-x -c`. This in turn leads to `flang-new -cc1`, which is not supported.
2021-02-05 00:23:42 +08:00
! RUN: cat %s | flang-new -fc1 -E | FileCheck %s --check-prefix=PP-NOT-DEFINED
! RUN: cat %s | flang-new -fc1 -DNEW -E | FileCheck %s --check-prefix=PP-DEFINED
[clang][driver] Set the input type to Fortran when reading from stdin This patch makes sure that for the following invocation of the new Flang driver, clangDriver sets the input type to Fortran: ``` flang-new -E - ``` This change does not affect `clang`, i.e. for the following invocation the input type is set to C: ``` clang -E - ``` This change leverages the fact that for `flang-new` the driver is in Flang mode. Differential Revision: https://reviews.llvm.org/D96777
2021-02-16 21:31:53 +08:00
! Test `-test-io`: for the corresponding frontend action (`InputOutputTestAction`) the driver handles the file I/O on its own
[flang][driver] Fix reading from stdin when using `-test-io` This patch adds logic in the InputOutputTestAction frontend action for reading input from stdin. Without this patch the following fails: ``` flang-new -fc1 -test-io - ``` The implementation of `InputOutputTestAction` is cleaned-up and a test for reading from stdin is added. Note that there's a difference between `-test-io` and e.g. `-E` in terms of file I/O. The frontend action for the former handles all file I/O on it's own. Conversely, the action corresponding to -E relies on the prescanner API to handle this. Currently we can't test reading from stdin for `flang-new -`. In this case `libclangDriver` assumes `-x -c`. This in turn leads to `flang-new -cc1`, which is not supported.
2021-02-05 00:23:42 +08:00
! the corresponding action (`PrintPreprocessedAction`)
! RUN: cat %s | flang-new -fc1 -test-io | FileCheck %s --check-prefix=IO --match-full-lines
! RUN: cat %s | flang-new -fc1 -DNEW -test-io | FileCheck %s --check-prefix=IO --match-full-lines
!-------------------------
! EXPECTED OUTPUT for `-E`
!-------------------------
! PP-NOT-DEFINED: program b
! PP-DEFINED: program a
!-------------------------------
! EXPECTED OUTPUT for `-test-io`
!-------------------------------
! IO: #ifdef NEW
! IO-NEXT: Program A
! IO-NEXT: #else
! IO-NEXT: Program B
! IO-NEXT: #endif
#ifdef NEW
Program A
#else
Program B
#endif