Original-commit: flang-compiler/f18@582c6d1eca5bc29fddadae4d25e418da4ace2c11
Reviewed-on: https://github.com/flang-compiler/f18/pull/311
Tree-same-pre-rewrite: false

Original-commit: flang-compiler/f18@40461345124b95de1f35828885e95d8bf0a235f1
Reviewed-on: https://github.com/flang-compiler/f18/pull/311
Tree-same-pre-rewrite: false

Original-commit: flang-compiler/f18@c9823da20746313005ee017413f8207a720a10b0
Reviewed-on: https://github.com/flang-compiler/f18/pull/311
Tree-same-pre-rewrite: false

Original-commit: flang-compiler/f18@386cd8a9b43f4e65c3e42febbae991fa87d277a9
Reviewed-on: https://github.com/flang-compiler/f18/pull/311
Tree-same-pre-rewrite: false

Original-commit: flang-compiler/f18@88cdb49f4892a20f2628f11373a0f1c9c32a6c1e
Reviewed-on: https://github.com/flang-compiler/f18/pull/311
Tree-same-pre-rewrite: false

Original-commit: flang-compiler/f18@051c1dd923a3b321d1a19768414caf93732a3426
Reviewed-on: https://github.com/flang-compiler/f18/pull/311
Tree-same-pre-rewrite: false

Original-commit: flang-compiler/f18@f2d751d8a6c1bf31f69031bbdab0a823999ebf5c
Reviewed-on: https://github.com/flang-compiler/f18/pull/311
Tree-same-pre-rewrite: false

Original-commit: flang-compiler/f18@56e83d4dd64dd7d30b2ce4bbf124f2c39bc14b58
Reviewed-on: https://github.com/flang-compiler/f18/pull/311
Tree-same-pre-rewrite: false

Original-commit: flang-compiler/f18@2c3368fb5f6178bb997936bb506deecc2d8b7d03
Reviewed-on: https://github.com/flang-compiler/f18/pull/311
Tree-same-pre-rewrite: false

Original-commit: flang-compiler/f18@bea98aeb9638b9d584488ae5faf72d53f1747a5f
Reviewed-on: https://github.com/flang-compiler/f18/pull/311
Tree-same-pre-rewrite: false

Add `ForwardReference<>` class template

Original-commit: flang-compiler/f18@b541a4d167530138025b8a0c8dd1031144ab8435
Reviewed-on: https://github.com/flang-compiler/f18/pull/314

Original-commit: flang-compiler/f18@09e9501951499625fdabdc04f3bcf7ae85b37467
Reviewed-on: https://github.com/flang-compiler/f18/pull/314

Original-commit: flang-compiler/f18@65abebd838ef6b20960f69595709db55f3e5a9b7
Reviewed-on: https://github.com/flang-compiler/f18/pull/314
Tree-same-pre-rewrite: false

Fix flang-compiler/f18#312

Original-commit: flang-compiler/f18@74a9426adf29b21a0971f6db224efbd77da989af
Reviewed-on: https://github.com/flang-compiler/f18/pull/313

Original-commit: flang-compiler/f18@3248ec1cf93a18a7172eaeb90688de9fae4ab753
Reviewed-on: https://github.com/flang-compiler/f18/pull/313

Original-commit: flang-compiler/f18@7d0b365a6dcd02df245ee6ea2fcbadbdb31e86f6
Reviewed-on: https://github.com/flang-compiler/f18/pull/313
Tree-same-pre-rewrite: false

Original-commit: flang-compiler/f18@0b1369ce5511d728c10c1b00ca14a2c9c4572ac7
Reviewed-on: https://github.com/flang-compiler/f18/pull/313
Tree-same-pre-rewrite: false

Original-commit: flang-compiler/f18@625ffb4f1a09343725907fe51597e88e28a0ca91
Reviewed-on: https://github.com/flang-compiler/f18/pull/313
Tree-same-pre-rewrite: false

Fixed reference to a header file

Original-commit: flang-compiler/f18@658bc758d7c4bcea7ffbf06968a2faa3f4c8a124
Reviewed-on: https://github.com/flang-compiler/f18/pull/310

Original-commit: flang-compiler/f18@22f93f0b307384ebe022aa300771fef40039c11e
Reviewed-on: https://github.com/flang-compiler/f18/pull/310

Rename to Fortran.h, update style guide, run clang-format on everything

Original-commit: flang-compiler/f18@0cf07c3ace6b713f8ec0fb348af99a4ef04dd9e3
Reviewed-on: https://github.com/flang-compiler/f18/pull/308

Original-commit: flang-compiler/f18@3a9a185383fb4bf967624258f59e2f22cd143ed5
Reviewed-on: https://github.com/flang-compiler/f18/pull/308

Original-commit: flang-compiler/f18@aa2907d2260c34085360917e7fab43d8ee79b6e4
Reviewed-on: https://github.com/flang-compiler/f18/pull/308
Tree-same-pre-rewrite: false

Fix bug in test_modfile.sh

Original-commit: flang-compiler/f18@6e95724f0e2efda36c0efc16d7f6bfde90975a00
Reviewed-on: https://github.com/flang-compiler/f18/pull/309

The expected mod files specified in the test do not necessarily
appear in sorted order, and the desired order depends on what the
`comm` command expects. So sort them to be sure it is right.

Original-commit: flang-compiler/f18@730d0d0562dd0a4eabfde020fef9fe371d401ff5
Reviewed-on: https://github.com/flang-compiler/f18/pull/309

Various name resolution bug fixes

Original-commit: flang-compiler/f18@fc831f600e5d37f646d4a83fbec7befc4d5dffda
Reviewed-on: https://github.com/flang-compiler/f18/pull/305

This showed up in procinterface01. A function can have more than one
PrefixSpec (e.g. `real elemental f()`). We need to ignore that ones
that aren't types.

Also, process the type after the ImplicitPart rather than after the
SpecificationPart. The type of the function result variable could
be accessed between those places.

Original-commit: flang-compiler/f18@df85eedb925b6f8739d6f6ccd9820ff5d9e4f4c5
Reviewed-on: https://github.com/flang-compiler/f18/pull/305

A module procedure interface body can access entities in its host
without an IMPORT statement. So the `ImportKind` of the scope created
for such an interface body should be `Default`, not `None` as it is
for other interface bodies.

Original-commit: flang-compiler/f18@24bb2668fdb626a4df76719345b02e533d015d79
Reviewed-on: https://github.com/flang-compiler/f18/pull/305
Tree-same-pre-rewrite: false

The `GenericDetails::CheckSpecific()` check was happening too early.
We have to wait until all procedures of the generic have been seen.
The generic can have the same name as a module procedure only if that
module procedure is a specific procedure of the generic.

Improve the `SayAlreadyDeclared` error message when the previous
declaration is a use-association

Original-commit: flang-compiler/f18@269e3db6020a5acc51a291dfea98455e6a97d2d5
Reviewed-on: https://github.com/flang-compiler/f18/pull/305
Tree-same-pre-rewrite: false

When a generic has the same name as a module procedure or derived type,
the latter weren't being written to the `.mod` file. Fix that by calling
`PutSymbol()` on those symbols from the generic. Change `PutSymbol()` to
accept `Symbol *` to make that more convenient.

Original-commit: flang-compiler/f18@1778efe981812b1d1d1b684647c72085f44c3209
Reviewed-on: https://github.com/flang-compiler/f18/pull/305
Tree-same-pre-rewrite: false

When a function-stmt has a type in the prefix (`type(t) function f()`),
the type cannot be resolve until after processing the USE and IMPLICIT
statements. So save the parse-tree of the type and process it at the
end of the specification section.

Add `ProcessTypeSpec()` to handle the process of setting up to walk
a type spec, walking it, restoring the state, and returning the type
spec. We do this several other places too.

Original-commit: flang-compiler/f18@bcde294d0e62c6ef8506392f66816814ae976dff
Reviewed-on: https://github.com/flang-compiler/f18/pull/305
Tree-same-pre-rewrite: false

A statement entity (`data-i-do-variable` or `ac-do-variable`) that
doesn't have a type specified gets the type it would have in the
enclosing scope. That means if there is a visible variable with the
same name, the statement entity gets its type. We were failing to
do that and just applying the implicit rules.

Original-commit: flang-compiler/f18@72bc7c29ba8d4be6a7c93080bb7fac7a3bc73577
Reviewed-on: https://github.com/flang-compiler/f18/pull/305
Tree-same-pre-rewrite: false

If an external subprogram is called and then declared, we have to
replace the `ProcEntityDetails` with `SubprogramDetails` in the symbol.
While doing so we can also check that the call was consistent with the
declaration for function vs. subprogram.

Original-commit: flang-compiler/f18@e43a2dae790cd0f54ecaec2ffc1235fd2b7754e9
Reviewed-on: https://github.com/flang-compiler/f18/pull/305
Tree-same-pre-rewrite: false

We were setting `expectedProcFlag_` to indicate if a `ProcedureDesignator`
was used in a function or subroutine context. That didn't work if they
were nested, for example: `call f(g())`.

Instead, at the point we know function vs. subroutine (i.e. in the
`CallStmt` and `FunctionReference` nodes), explicitly walk the children,
passing in the flag.

Original-commit: flang-compiler/f18@8a13283f98c366b74b35bc003f7bc908212a0c6c
Reviewed-on: https://github.com/flang-compiler/f18/pull/305
Tree-same-pre-rewrite: false

fix flang-compiler/f18#303, better error recovery for misplaced type parameter declarat…

Original-commit: flang-compiler/f18@79684ed2ebd3d1a3670fad87de69f104305116cc
Reviewed-on: https://github.com/flang-compiler/f18/pull/307

Original-commit: flang-compiler/f18@ebaa23cbcd91ba83b65b8dd174baffab1395bc65
Reviewed-on: https://github.com/flang-compiler/f18/pull/307

Small edits to C++17 usage notes

Original-commit: flang-compiler/f18@0e51862dd2646ee763d8f31628ba61f0621072ea
Reviewed-on: https://github.com/flang-compiler/f18/pull/306

Original-commit: flang-compiler/f18@bdf62ac90020c84516400085b75109979d599dd7
Reviewed-on: https://github.com/flang-compiler/f18/pull/306

Fortran IR: part 2, lowest layer of the IR hierarchy. Specifically, Basic Blocks

Original-commit: flang-compiler/f18@5bae9491740cf402218233fd1bc69ee9c92d8a8b
Reviewed-on: https://github.com/flang-compiler/f18/pull/294

Original-commit: flang-compiler/f18@b1c731b0266576d103f2dc44dfdb3410795cd81d
Reviewed-on: https://github.com/flang-compiler/f18/pull/294