[NFC][flang][runtime] Moved freestanding-tools.h to use it in FortranDecimal. (#87827)

I will add `toupper` implementation into it in the next PR.

[flang][runtime] Prepare enabling PRINT of integer32 for device. (#86247)

This commit adds required files into the offload build closure,
which means adding RT_API_ATTRS and other markers.

The i

[flang][runtime] Prepare enabling PRINT of integer32 for device. (#86247)

This commit adds required files into the offload build closure,
which means adding RT_API_ATTRS and other markers.

The implementation does not work for CUDA yet, because of
std::variant,swap,reverse usage. These issues will be resolved
separately (e.g. by using libcudacxx header files).

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[flang][runtime] Enable more APIs in the offload build. (#76486)

[flang] Move runtime API headers to flang/include/flang/Runtime

Move the closure of the subset of flang/runtime/*.h header files that
are referenced by source files outside flang/runtime (apart from

[flang] Move runtime API headers to flang/include/flang/Runtime

Move the closure of the subset of flang/runtime/*.h header files that
are referenced by source files outside flang/runtime (apart from unit tests)
into a new directory (flang/include/flang/Runtime) so that relative
include paths into ../runtime need not be used.

flang/runtime/pgmath.h.inc is moved to flang/include/flang/Evaluate;
it's not used by the runtime.

Differential Revision: https://reviews.llvm.org/D109107

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[flang] Remove *- C++ -* incantation from runtime .cpp files. NFC

We should only need to spell the language out in .h files.

Differential Revision: https://reviews.llvm.org/D109138

[flang] Reformat with latest clang-format and .clang-format

Original-commit: flang-compiler/f18@9fe84f45d7fd685051004678d6b5775dcc4c6f8f
Reviewed-on: https://github.com/flang-compiler/f18/pull/1094

[flang] Progress on Fortran I/O runtime

Use internal units for internal I/O state

Replace use of virtual functions

reference_wrapper

Internal formatted output to array descriptor

Delete dead cod

[flang] Progress on Fortran I/O runtime

Use internal units for internal I/O state

Replace use of virtual functions

reference_wrapper

Internal formatted output to array descriptor

Delete dead code

Begin list-directed internal output

Refactorings and renamings for clarity

List-directed external I/O (character)

COMPLEX list-directed output

Control list items

First cut at unformatted I/O

More OPEN statement work; rename class to ExternalFileUnit

Complete OPEN (exc. for POSITION=), add CLOSE()

OPEN(POSITION=)

Flush buffers on crash and for terminal output; clean up

Documentation

Fix backquote in documentation

Fix typo in comment

Begin implementation of input

Refactor binary floating-point properties to a new header, simplify numeric output editing

Dodge spurious GCC 7.2 build warning

Address review comments

Original-commit: flang-compiler/f18@9c4bba11cf2329575ea9ee446f69e9caa797135c
Reviewed-on: https://github.com/flang-compiler/f18/pull/982

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[flang] Initial buffer framing code

Address review comments

Integer output data editing (I,B,O,Z)

Full integer output formatting

Stub out some work in progress

Progress on E output data editing

[flang] Initial buffer framing code

Address review comments

Integer output data editing (I,B,O,Z)

Full integer output formatting

Stub out some work in progress

Progress on E output data editing

E, D, EN, and ES output editing done

Fw.d output editing

Real G output editing

G output editing for reals

Make environment a distinct module

CHARACTER and LOGICAL output editing

Minimal decimal representations for E0, F0, G0 editing

Move real output editing code into its own file

Fix/dodge some GCC build problems

Prep work for external I/O statement state

External HELLO, WORLD

Fix build problem with GCC

Add virtual destructors where needed

Add new test

Original-commit: flang-compiler/f18@c3f1774f8eee903928b7e46636edfb03425eabc0
Reviewed-on: https://github.com/flang-compiler/f18/pull/950

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[flang] Changed *.cc file extension to *.cpp (updated scripts) (flang-compiler/f18#958)

Updated CMake files accordingly, using better regex
Updated license headers to match new extension and fit wi

[flang] Changed *.cc file extension to *.cpp (updated scripts) (flang-compiler/f18#958)

Updated CMake files accordingly, using better regex
Updated license headers to match new extension and fit within 80 columns
Updated other comments within files that referred to the old extension

Original-commit: flang-compiler/f18@ae7721e611918631d1e3821dbb60f5ffcd9a69b1
Reviewed-on: https://github.com/flang-compiler/f18/pull/958

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