[flang] Multiplication, more tests.

Original-commit: flang-compiler/f18@e7ef16d2166cc946d59dd072754f8a347290e00a
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Refactor rounding code.

Original-commit: flang-compiler/f18@8ef2418791e62d8a90802a2e6754975a52412479
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Get real add/subtract working and tested.

Original-commit: flang-compiler/f18@c1b4389638d83cf9be712afc43cddc5d57e4dd48
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] start negative number tests

Original-commit: flang-compiler/f18@1b52ec8d3bc01640a46b2561918c5bb608d64d80
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Get back to passing all tests.

Original-commit: flang-compiler/f18@d08dc86ede2a6a3c2b14b03f1cc8be9e924c0aff
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Use EnumSet<> for real flags

Original-commit: flang-compiler/f18@a61f193036e6ea33e5e28bc23ceeb2c13ee14ff2
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] some real debugging

Original-commit: flang-compiler/f18@9653814ed3623f2abf592242b6d914bddc8766c7
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] begin testing reals

Original-commit: flang-compiler/f18@9d261b594bbf2a6dcec833239635599b28007e4d
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Convert REAL code to use IEEE encodings.

Original-commit: flang-compiler/f18@b36e50f46566cbb6975fc8c9325a003ef6abfcd9
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] real work

Original-commit: flang-compiler/f18@030347a906eda6384fd4d69dfe7d8e638aee9a2d
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] More work on reals.

Original-commit: flang-compiler/f18@3ba634a2140f413f1e7ecb1ac570aa6fc73f0cd7
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] more work on reals

Original-commit: flang-compiler/f18@3afe85bf153e39e20fd2562c605167caf48e7cff
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] begin real.h

Original-commit: flang-compiler/f18@b0f0cd896161d769efc3f499cd3ae1359c82953a
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] bugfixing from clang build

Original-commit: flang-compiler/f18@a05e108288065ebea3976922fb511e8c1851bd76
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Reading numbers from strings.

Original-commit: flang-compiler/f18@8cbadfe7778a400756bc34dcbb5fe39334a742f8
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Template specializations and more automatic configuration

Original-commit: flang-compiler/f18@a230a539076bd57f64f1d2fd63852941453c4cda
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Rename fixed-point to integer.

Original-commit: flang-compiler/f18@3fe9c505a58df5fcd1e2966451cba82c295200bd
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] More tests; full build and test cycle.

Original-commit: flang-compiler/f18@ac363643042cbb3c39234196f2a8c815af359199
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] More tests

Original-commit: flang-compiler/f18@e4371fca37a16c5dd9eea5a846248ce19c9cdb6b
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] More intrinsics

Original-commit: flang-compiler/f18@55f974be59e2a691439159c99bef0f3250eb8fb3
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Add pop count and parity code and tests.

Original-commit: flang-compiler/f18@a77f2831833551407f2a29e019b61f0da7bc66ec
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Complete conversion to value semantics

Original-commit: flang-compiler/f18@e98206ca97530e4d5532a6174582ed3897533a8e
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Converted multiplication

Original-commit: flang-compiler/f18@7d4c3182105d4736ffc4e678b647b1013f7f33be
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Converted shift intrinsics.

Original-commit: flang-compiler/f18@2e9be8ad66e6af9e7ccff2807645212311805974
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Continue conversion to value semantics

Original-commit: flang-compiler/f18@03fe2666110ce464da49190e83c703031edee932
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Begin conversion to value semantics.

Original-commit: flang-compiler/f18@9ea9dae7e7ccb2d73297bb4a1e4e073e8dda30cb
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Reformat

Original-commit: flang-compiler/f18@104ca5f4c6c462ba74b500a00badc916605e4f66
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Testing framework, debugging of fixed-point code.

Original-commit: flang-compiler/f18@a8fb2d75a50fb958079fa81fc7a37a2a08e8e78c
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] unit testing for LZBC

Original-commit: flang-compiler/f18@c8541fb8fbdd0ee35afe53ed1fb685573712b950
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] add fixed-point.h

Original-commit: flang-compiler/f18@21c85a5c21aa15ad2a29ea9f2af2bf5357d2f3c6
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] begin work

Original-commit: flang-compiler/f18@82e434bf5966afa6e86a24a4de69d1ab537eb607
Reviewed-on: https://github.com/flang-compiler/f18/pull/101
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#103 from ThePortlandGroup/pmk-issue98

Issue 98, better error recovery for specification-part

Original-commit: flang-compiler/f18@0239a080e0a387aeb0a45e750c82c230d6a1b7c1
Reviewed-on: https://github.com/flang-compiler/f18/pull/103

[flang] Issue 98, better error recovery for specification-part

Original-commit: flang-compiler/f18@0b0812a82b15decf430de2c3ca991623cf53e5e2
Reviewed-on: https://github.com/flang-compiler/f18/pull/103

[flang] Merge pull request flang-compiler/f18#102 from ThePortlandGroup/pmk-omp-fix

Allow tab in fixed form compiler directives.  Reformat C++.

Original-commit: flang-compiler/f18@1b7519b5a8209a1cb0504fbfcd3d3b124aa2be3a
Reviewed-on: https://github.com/flang-compiler/f18/pull/102

[flang] Allow tab in fixed form compiler directives.  Reformat C++.

Original-commit: flang-compiler/f18@59ba17cb2478bd0b0f4ed6084c424677c7b46371
Reviewed-on: https://github.com/flang-compiler/f18/pull/102

[flang] Merge pull request flang-compiler/f18#100 from ThePortlandGroup/tsk5

Remove extraneous Pre/Post for ProcedureDeclarationStmt

Original-commit: flang-compiler/f18@c7cf8c09b91da4bbea14092a3107fc5904312e1c
Reviewed-on: https://github.com/flang-compiler/f18/pull/100

[flang] Remove extraneous Pre/Post for ProcedureDeclarationStmt

clang give a compilation error on resolve-names.cc because there are
two overloadings of Pre(ProcedureDeclarationStmt) available in
ResolveNamesVisitor. One is defined in DeclTypeSpecVisitor and the other
in DeclarationVisitor. They are both brought in to ResolveNamesVisitor
via `using` statements.

The one in DeclarationVisitor is the one that is supposed to be called.
The other should have been removed when this one was added. This is the
one that gcc chooses to call, so this doesn't change any behavior.

The same applies to the Post method as well.

Original-commit: flang-compiler/f18@872f8faf96164a01f18100fc1942f68523be6d76
Reviewed-on: https://github.com/flang-compiler/f18/pull/100

[flang] Merge pull request flang-compiler/f18#99 from ThePortlandGroup/tsk7

Add Dump() routines for debugging.

Original-commit: flang-compiler/f18@cf7d2785aa5064708b0f67e897a850df26f927e8
Reviewed-on: https://github.com/flang-compiler/f18/pull/99

[flang] Add Dump() routines for debugging.

Add Dump() routines based on operator<< for the type so that they are
easy to call from the debugger. Overload for both pointer and reference
types and for dumping to std::cerr or a specific ostream.

Original-commit: flang-compiler/f18@ec6676eff04a0b231f7f5f3e1e2486f2c93e2810
Reviewed-on: https://github.com/flang-compiler/f18/pull/99

[flang] Merge pull request flang-compiler/f18#97 from ThePortlandGroup/tsk5

Process procedure declarations and derived types.

Original-commit: flang-compiler/f18@d356b3b7c46ffd89c02761241a7d5589acd2b0cd
Reviewed-on: https://github.com/flang-compiler/f18/pull/97

[flang] Address review comments.

Replace operator=(Symbol) and operator=(DeclTypeSpec) with set_symbol()
and set_type() to make it clearer. Eliminate the move constructor as it
is not needed. Make all but the accessor functions out-of-line.

Change HasExplicitType() to NeedsExplicitType(), reversing its sense.
HasExplicitType() returned true for symbols that didn't have or need an
explicit type, which was confusing.

Original-commit: flang-compiler/f18@ada13ac6a32145fe260d78cb0e736998e5eabd15
Reviewed-on: https://github.com/flang-compiler/f18/pull/97

[flang] Process procedure declarations and derived types.

Add ObjectEntityDetails and ProcEntityDetails to distinguish between an
entity from an object-decl and one from a proc-decl. When we don't know,
it stays as EntityDetails until it is resolved. DeclareEntity() in
DeclarationVisitor creates this kind of symbol.

Add flags to Symbol as a convenient place for boolean flags common to
many kinds of symbols. Use it to mark symbols known to be functions or
subroutines so that we can report errors when they are used incorrectly.
Improve handling of EXTERNAL statement.

Handle ProcDecl nodes and add symbols for them.

Partial processing of derived types. Data component declarations are
processed and added to the derived type. Define TypeBoundProc and
TypeBoundGeneric in type.h. Procedure components, type-bound procedures,
etc. are not handled yet and nothing is done with the derived type once
it is created. Eliminate DerivedTypeDefBuilder in favor of just setting
fields in derivedTypeData_.

Add GetDeclTypeSpec to go with BeginDeclTypeSpec and EndDeclTypeSpec, to
avoid directly access the private variable.

Add tests in resolve20.f90 for errors related to procedure declarations.
Add missing copyrights to other tests.

Original-commit: flang-compiler/f18@40e65c14656a1c60eae5a8fdfbdcab062ad6f1d2
Reviewed-on: https://github.com/flang-compiler/f18/pull/97
Tree-same-pre-rewrite: false

[flang] Add MessageHandler::Say2.

This handles the common case of an error message referring to
a name, and an attached message referring to another name.
For example, reporting an error where a name is already declared
and mentioning the previous declaration.

Original-commit: flang-compiler/f18@901b50dcf2860c5fcd5f94f0198981fe871d6716
Reviewed-on: https://github.com/flang-compiler/f18/pull/97
Tree-same-pre-rewrite: false

[flang] Extract DeclarationVisitor from ResolveNamesVisitor

The is a refactoring to move all handling of declarations from
ResolveNamesVisitor to a new class. No function change.

Original-commit: flang-compiler/f18@2a5589ab969421b1723c63105fe6922941ec1096
Reviewed-on: https://github.com/flang-compiler/f18/pull/97
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#96 from ThePortlandGroup/omppar

Omppar

Original-commit: flang-compiler/f18@8c259b93004558b74ae9c771e319c18ab86ea409
Reviewed-on: https://github.com/flang-compiler/f18/pull/96

[flang] Fix comment in openmp-grammar.h.  Fix unparse of reduction operator.

Original-commit: flang-compiler/f18@f6a7a03492525bcdf31e61f3a71e28cbe5818e95
Reviewed-on: https://github.com/flang-compiler/f18/pull/96

[flang] Remove unintended change.

Original-commit: flang-compiler/f18@a545cd5de4f16accf7862df0f9c895cede7b432f
Reviewed-on: https://github.com/flang-compiler/f18/pull/96
Tree-same-pre-rewrite: false

[flang] Fix space in issue unparse.cc  between directive and its first clause.

Original-commit: flang-compiler/f18@d9478c1a59050e59b14bf57d5e62c88c71bbe58a
Reviewed-on: https://github.com/flang-compiler/f18/pull/96
Tree-same-pre-rewrite: false

[flang] update unparsing openmp directives and clauses.

Original-commit: flang-compiler/f18@76121cda6c29404c232453f7302ac39eb0f9dbce
Reviewed-on: https://github.com/flang-compiler/f18/pull/96
Tree-same-pre-rewrite: false

[flang] Update unparse.cc and move declarative directives for now.

Original-commit: flang-compiler/f18@d79503f98ffc1f1975533e0a9ec94f0cbeb5b9fd
Reviewed-on: https://github.com/flang-compiler/f18/pull/96
Tree-same-pre-rewrite: false

[flang] add more clauses, declarative directives, standalone directives, and directives enclosing do loop.

Original-commit: flang-compiler/f18@483a54b0c890a550165e985f1ae10c4ab9c5ac79
Reviewed-on: https://github.com/flang-compiler/f18/pull/96
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#95 from ThePortlandGroup/tsk3

Improvements to generics.

Original-commit: flang-compiler/f18@4d1664206f76c4f7f749113e09a0173fe4eb64f9
Reviewed-on: https://github.com/flang-compiler/f18/pull/95

[flang] Improvements to generics.

When a generic or specific procedure is use-associated, make a copy of
it in the current scope (replacing the symbol that has UseDetails) so
that we can make changes to it. This permits a generic to be defined in
one module and extended with more specific procedures in another.

When a specific procedure has the same name as its generic, it can't be
stored directly in the scope because that is indexed by name and the
generic is already there. So instead we store the specific in the
GenericDetails of the generic symbol.

Enforce the rule that a generic and a procedure can only have the same
name if the procedure is one of the specifics of the generic.

Refactorings done is support of this change:
- Add FindSymbol() and EraseSymbol() as helpers to find or erase a
  symbol in the current scope. Make use of FindSymbol() where appropriate.
- Add SayAlreadyDeclared() to report a common error.

Original-commit: flang-compiler/f18@be479b988772c942a473cb0453b906ed51cea498
Reviewed-on: https://github.com/flang-compiler/f18/pull/95

[flang] Create LICENSE

We expect to adopt the llvm.org license in the near future.

Original-commit: flang-compiler/f18@a1a01e949b389db784127f9ccbddaad460335c3a

[flang] Update build instructions (flang-compiler/f18#94)

* Update build instructions

Add an overview and update the build instructions for f18.

Original-commit: flang-compiler/f18@a60060cfe110cbb32705408b42755d03f69e3302
Reviewed-on: https://github.com/flang-compiler/f18/pull/94

[flang] Merge pull request flang-compiler/f18#93 from ThePortlandGroup/tsk3

Clean up; fix assert and crashes

Original-commit: flang-compiler/f18@1e91e792921023ee2f78a918c3d3229773ea2124
Reviewed-on: https://github.com/flang-compiler/f18/pull/93

[flang] Address review comments.

Original-commit: flang-compiler/f18@5361f3c810ad6e161006f43fb8759e36e9497591
Reviewed-on: https://github.com/flang-compiler/f18/pull/93

[flang] Clean up; fix assert and crashes

This is the result of running `f18 -fdebug-resolve-names` on a bunch of
Fortran source and fixing the resulting assertion errors and segmentation
faults.

Most of the problems were with encountering attributes, array specs, or
declaration type specs when we weren't prepared to handle them. Those
were fixed by adding calls to {Begin,End}DeclTypeSpec and {Begin,End}Decl
when encountering certain nodes, though the real work for those nodes is
still to be done.

Extract some common functionality into PostAttrSpec and CheckUseError.

Add missing XOR to GenericSpec.

Original-commit: flang-compiler/f18@3c0ff7ded4b3f5512a03e994edd8a0d5074e1149
Reviewed-on: https://github.com/flang-compiler/f18/pull/93
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#92 from ThePortlandGroup/pmk-runtime

Document and initiate development of run time descriptors.

Original-commit: flang-compiler/f18@8dd289d7f5dbd79e13db28766f880d8bddbd545f
Reviewed-on: https://github.com/flang-compiler/f18/pull/92

[flang] More descriptor work.

Original-commit: flang-compiler/f18@269cb528764d7d8925ef499be2c906a71f0d0d52
Reviewed-on: https://github.com/flang-compiler/f18/pull/92

[flang] Refine type bound define assignment.

Original-commit: flang-compiler/f18@1552251c45ec3b733ae5272513fcac1e49bc5133
Reviewed-on: https://github.com/flang-compiler/f18/pull/92
Tree-same-pre-rewrite: false

[flang] Separate generic from specialized parts of derived types and their components.

Original-commit: flang-compiler/f18@b578f607bebcee5b75703cbe04d7e8e5ddebe077
Reviewed-on: https://github.com/flang-compiler/f18/pull/92
Tree-same-pre-rewrite: false

[flang] rearrange some TODO comments

Original-commit: flang-compiler/f18@64fc7fdf2cb5be779f3025a780308d587af9ded0
Reviewed-on: https://github.com/flang-compiler/f18/pull/92
Tree-same-pre-rewrite: false

[flang] more review comments

Original-commit: flang-compiler/f18@d85e171b11c7d684e84096025450e8a836e4b00e
Reviewed-on: https://github.com/flang-compiler/f18/pull/92
Tree-same-pre-rewrite: false

[flang] more thinking about requirements for defined assignment &c.

Original-commit: flang-compiler/f18@20fb1a40452dc21bafe601247375165525539f3e
Reviewed-on: https://github.com/flang-compiler/f18/pull/92
Tree-same-pre-rewrite: false

[flang] review comments

Original-commit: flang-compiler/f18@87f158c68f41fba0afa71a85e66d3252099a8012
Reviewed-on: https://github.com/flang-compiler/f18/pull/92
Tree-same-pre-rewrite: false

[flang] Add a TODO.

Original-commit: flang-compiler/f18@b9b929384b018bc1898d1b099bcc47a675b165fe
Reviewed-on: https://github.com/flang-compiler/f18/pull/92
Tree-same-pre-rewrite: false

[flang] Fix clang-only build warning, run clang-format.

Original-commit: flang-compiler/f18@bbc6b253463909f3c891bcb396019ecb9b6fcdb1
Reviewed-on: https://github.com/flang-compiler/f18/pull/92
Tree-same-pre-rewrite: false

[flang] Document and initiate development of run time descriptors.

Original-commit: flang-compiler/f18@79edea528f2f27deee424cfe967ed71bb523891d
Reviewed-on: https://github.com/flang-compiler/f18/pull/92
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#90 from ThePortlandGroup/pmk5

Fix issue flang-compiler/f18#89

Original-commit: flang-compiler/f18@119fa65b2cc0ff3bb57dd4a0b17c08b9ddbaffd4
Reviewed-on: https://github.com/flang-compiler/f18/pull/90

[flang] clang-format

Original-commit: flang-compiler/f18@acb149dc7ca2e6c9f86a602d2fd0b234b636f9ee
Reviewed-on: https://github.com/flang-compiler/f18/pull/90

[flang] Fine tuning of space recognition.

Original-commit: flang-compiler/f18@622befa9ca00ef950f0f6575b71218b426caa974
Reviewed-on: https://github.com/flang-compiler/f18/pull/90
Tree-same-pre-rewrite: false

[flang] Dodge bogus warning about unused anonymous variable in refactored code.

Original-commit: flang-compiler/f18@1d3cfe003806254e8c4d6981d62d52dffa76be77
Reviewed-on: https://github.com/flang-compiler/f18/pull/90
Tree-same-pre-rewrite: false

[flang] Fix tokenization of signed-int-literal-constant, allow internal space.

Original-commit: flang-compiler/f18@afa6425b487c0cfb2d50b6b758055ed0dbe27300
Reviewed-on: https://github.com/flang-compiler/f18/pull/90
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#91 from ThePortlandGroup/omppar

Add OpenMP parallel directives and private/firstprivate clauses to pa…

Original-commit: flang-compiler/f18@ba4eeb5a97b34adc3895485d26c1556bf0cd9493
Reviewed-on: https://github.com/flang-compiler/f18/pull/91

[flang] Modified directive names and clauses to reflect in OpenMP Spec.

Original-commit: flang-compiler/f18@c2f756f4785271ff564636c821d868e9cb756935
Reviewed-on: https://github.com/flang-compiler/f18/pull/91

[flang] Add OpenMP parallel directives and private/firstprivate clauses to parser.

Original-commit: flang-compiler/f18@ea8abe45cc0ef2fce18d6f34b7e7cdda31ee2034
Reviewed-on: https://github.com/flang-compiler/f18/pull/91
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#88 from ThePortlandGroup/tsk3

Name resolution on interface blocks.

Original-commit: flang-compiler/f18@a902406caa0c695092f9fb85922133e7bfd6c854
Reviewed-on: https://github.com/flang-compiler/f18/pull/88

[flang] Refactor: make some methods out-of-line.

Original-commit: flang-compiler/f18@d2d5457e4653fb51f0c48b81066c5c38ba5ac302
Reviewed-on: https://github.com/flang-compiler/f18/pull/88

[flang] Support interface blocks.

Add subprogram symbols for each interface-body and set isInterface on
them. Create a symbol with GenericDetails for each generic interface
block and add interface specifications to the specific procedures of
the generic. InterfaceVisitor takes care of this.

Before processing the specification part of modules and subprograms,
collect the names of module subprograms and internal subprograms and add
them to the symbol table with SubprogramNameDetails. This allows us to
reference them from interface blocks in the specification part.
SubprogramNameDetails is converted to SubprogramDetails when the real
subprogram is visited.

This is achieved by setting subpNamesOnly_ and then walking the
ModuleSubprogramPart or InternalSubprogramPart. Creating the symbol and
scope for a module or subprogram now happens when the Module,
SubroutineSubprogram, or FunctionSubprogram node is encountered so
this can happen in the right order.

Add BeginSubprogram and EndSubprogram to handle the parts in common
between subprograms and interface specifications.

Add GenericSpec to type.h to represent all possible generic specs.
Only generic names are resolved so far.

Add tests for new error messages. Change resolve02.f90 to reflect the
new errors reported.

Original-commit: flang-compiler/f18@03148b49dd0c58e36aca2660a56fcefadd97b99d
Reviewed-on: https://github.com/flang-compiler/f18/pull/88
Tree-same-pre-rewrite: false

[flang] Separate const and non-const operator* in Indirection

Without this, Walk(const Indirection<T>...) can call a Walk function
with non-const T.

Original-commit: flang-compiler/f18@8c98b0a9b971670aa42d6075979162ca44b124e3
Reviewed-on: https://github.com/flang-compiler/f18/pull/88
Tree-same-pre-rewrite: false

[flang] Extract class SubprogramVisitor out of ResolveNamesVisitor.

This is just refactoring. SubprogramVisitor now contains the functionality
related to subprograms, including statement functions. This is preparation
for handling interface blocks.

Also, change MessageHandler to create the Messages object and return it
through an accessor rather than having it created outside and passed in.
This saves us from having to pass it up through the chain of constructors.

Original-commit: flang-compiler/f18@f73cfa2fe928acc7e3744991a842231260467c6e
Reviewed-on: https://github.com/flang-compiler/f18/pull/88
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#87 from ThePortlandGroup/pmk4

Quash extra spaces after macro replacement

Original-commit: flang-compiler/f18@fd80d448038360f6e9acc4ad85e4c8f1835fb211
Reviewed-on: https://github.com/flang-compiler/f18/pull/87

[flang] address review comment

Original-commit: flang-compiler/f18@bd8a96cf70ba69ff12b73ee5b3c3f804d0842ed4
Reviewed-on: https://github.com/flang-compiler/f18/pull/87

[flang] Document preprocessing more.

Original-commit: flang-compiler/f18@93f7a0b01139e3788926aa82f60bd9a839941ae1
Reviewed-on: https://github.com/flang-compiler/f18/pull/87
Tree-same-pre-rewrite: false

[flang] a little more refinement

Original-commit: flang-compiler/f18@5754d426e88740b86829ee0b61462251d531f7b2
Reviewed-on: https://github.com/flang-compiler/f18/pull/87
Tree-same-pre-rewrite: false

[flang] Clean up for merge.

Original-commit: flang-compiler/f18@608ef132c0e3ede991a4af1caf116232ec7fbb42
Reviewed-on: https://github.com/flang-compiler/f18/pull/87
Tree-same-pre-rewrite: false

[flang] Remove blanks from macro-replaced text in fixed form source.

Original-commit: flang-compiler/f18@c33dad2162a7553abba8d8bd0240141d6f2657a1
Reviewed-on: https://github.com/flang-compiler/f18/pull/87
Tree-same-pre-rewrite: false

[flang] Implement proper swap() and operator=(&&) for some types that need them.

Original-commit: flang-compiler/f18@a9c53d8bb5bb9d2fc0c3976c3f693f1672d5ac8e
Reviewed-on: https://github.com/flang-compiler/f18/pull/87
Tree-same-pre-rewrite: false

[flang] Quash multiple blanks when preprocessing.

Original-commit: flang-compiler/f18@d91680b469fc627a1325fe28c7382fd16a279892
Reviewed-on: https://github.com/flang-compiler/f18/pull/87
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#86 from ThePortlandGroup/pmk3

Tweak compiler directive continuation line processing

Original-commit: flang-compiler/f18@bbd5250db97b4acfc28ac23926d8911222493dcf
Reviewed-on: https://github.com/flang-compiler/f18/pull/86

[flang] Tweak compiler directive continuation line processing to insert a space across the line break when needed.

Original-commit: flang-compiler/f18@de3a4a01ec58580d88fcec60637cbd96bf022917
Reviewed-on: https://github.com/flang-compiler/f18/pull/86

[flang] Merge pull request flang-compiler/f18#85 from ThePortlandGroup/pmk2

Fixes for compiler directive continuation lines

Original-commit: flang-compiler/f18@e4a5e129f5ee059db67528d776349fb1b24611ec
Reviewed-on: https://github.com/flang-compiler/f18/pull/85

[flang] Fix another bug found in test.

Original-commit: flang-compiler/f18@7c5df7f3f8cfb8eb543d0177ae3cce837b4d30c8
Reviewed-on: https://github.com/flang-compiler/f18/pull/85

[flang] fix previous changes after testing

Original-commit: flang-compiler/f18@c088704f135cdb27cf13b5961ee1563ea2389aef
Reviewed-on: https://github.com/flang-compiler/f18/pull/85
Tree-same-pre-rewrite: false

[flang] Observe line length limit when unparsing BOZ literals.

Original-commit: flang-compiler/f18@2c2e4035b6cb3cbeeed3f2bd555022df97c93c8c
Reviewed-on: https://github.com/flang-compiler/f18/pull/85
Tree-same-pre-rewrite: false

[flang] Fix compiler directive continuation lines.

Original-commit: flang-compiler/f18@f30e3b71f86bcec3f7ff0fb956f45ffb2a5427e6
Reviewed-on: https://github.com/flang-compiler/f18/pull/85
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#84 from ThePortlandGroup/pmk1

Build with g++ 8.1.0

Original-commit: flang-compiler/f18@a1cd245ba206493e296dcea50ea0786b7b02b8ef
Reviewed-on: https://github.com/flang-compiler/f18/pull/84

[flang] reformat for merge

Original-commit: flang-compiler/f18@ca8f9611f52ad24d969343a00e31b5e7e1675d38
Reviewed-on: https://github.com/flang-compiler/f18/pull/84

[flang] Keep message.cc buildable by g++ 7.2.

Original-commit: flang-compiler/f18@edd311972f1bd0da2df1e373a211babca5fa842f
Reviewed-on: https://github.com/flang-compiler/f18/pull/84
Tree-same-pre-rewrite: false