[flang] Fix UTF-8 bugs and add related tests

Original-commit: flang-compiler/f18@9dd19ede9ed76570653d698bd1261950e74dda4b
Reviewed-on: https://github.com/flang-compiler/f18/pull/471
Tree-same-pre-rewrite: false

[flang] checkpoint character intrinsic folding

Original-commit: flang-compiler/f18@f495ed92bd1291b6efdb378da79f8f0a9741e15e
Reviewed-on: https://github.com/flang-compiler/f18/pull/471
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#483 from flang-compiler/jpr-482-fix

Fix issue flang-compiler/f18#482 related to folding warnings

Original-commit: flang-compiler/f18@8532032960b684685933efab9e23bd866a14a370
Reviewed-on: https://github.com/flang-compiler/f18/pull/483

[flang] Address formatting comment

Original-commit: flang-compiler/f18@0f5fb6e75a6217a404048a74d5b02d908857fbc0
Reviewed-on: https://github.com/flang-compiler/f18/pull/483

[flang] Remove OS dependency in folding test

Original-commit: flang-compiler/f18@3728898ea9e16eb04510894cf95feaddf8f4fd63
Reviewed-on: https://github.com/flang-compiler/f18/pull/483
Tree-same-pre-rewrite: false

[flang] Fix 482: do not check floating point environment flags with clang

Original-commit: flang-compiler/f18@fc423c151654055e50c3fad563be4e0a6afd7348
Reviewed-on: https://github.com/flang-compiler/f18/pull/483
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#485 from flang-compiler/pmk-iso_fortran_env

Define a placeholder for ISO_FORTRAN_ENV standard module

Original-commit: flang-compiler/f18@927ed4283e3ff2ac6180cf725710bf6b1000b216
Reviewed-on: https://github.com/flang-compiler/f18/pull/485

[flang] Other changes moved to their own branch.

Original-commit: flang-compiler/f18@6a922d085af655c2345dfe1c6f2360982728e55f
Reviewed-on: https://github.com/flang-compiler/f18/pull/485

[flang] Placeholder for standard module iso_fortran_env

Original-commit: flang-compiler/f18@386ebb04901f2fc46e7a5c2e64fbfa0586065acb
Reviewed-on: https://github.com/flang-compiler/f18/pull/485
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#480 from flang-compiler/pmk-fixes

Fix two bugs

Original-commit: flang-compiler/f18@9023d3c3ac5993d0703d77a2c48247aef999000e
Reviewed-on: https://github.com/flang-compiler/f18/pull/480

[flang] Apply suggestion from code review

Original-commit: flang-compiler/f18@211c99917c60c6d2ae9efe260515b0b182a2136f
Reviewed-on: https://github.com/flang-compiler/f18/pull/480

[flang] Fix two bugs

Original-commit: flang-compiler/f18@919e512c083c1e145cdc2dec1d2af2d4a3df4bcf
Reviewed-on: https://github.com/flang-compiler/f18/pull/480
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#479 from flang-compiler/pmk-unparse-expr

Unparse the typedExpr from semantics

Original-commit: flang-compiler/f18@f41b303b96ffe03c28619e6e84cfbbcaa18e1a08
Reviewed-on: https://github.com/flang-compiler/f18/pull/479

[flang] Unparse the typedExpr from semantics, when present, rather than original parse tree expressions

Original-commit: flang-compiler/f18@4274cc8eaa6e6ff3aa9b17646efb81f43e1e526a
Reviewed-on: https://github.com/flang-compiler/f18/pull/479

[flang] Merge pull request flang-compiler/f18#477 from flang-compiler/pmk-fixes

Roll up some minor fixes + tweak name resolution pass order

Original-commit: flang-compiler/f18@ae5796115580363ba9e72cf130d63ad9791b3f81
Reviewed-on: https://github.com/flang-compiler/f18/pull/477

[flang] Fix build warning, add comment about extension not supported

Original-commit: flang-compiler/f18@1033ae05ca3b8050c85992d3517eee6ea7ede260
Reviewed-on: https://github.com/flang-compiler/f18/pull/477

[flang] Skim executable parts to detect dummy procedure calls

Original-commit: flang-compiler/f18@b085255e5c8fa8e2d16b76c49beb76e005ca6060
Reviewed-on: https://github.com/flang-compiler/f18/pull/477
Tree-same-pre-rewrite: false

[flang] INTRINSIC attribute should convert symbol to procedure; also check C840

Original-commit: flang-compiler/f18@b698b84ccd1cab75c376f2df1519917403147957
Reviewed-on: https://github.com/flang-compiler/f18/pull/477
Tree-same-pre-rewrite: false

[flang] Fix arg specs for CMPLX intrinsic

Original-commit: flang-compiler/f18@3586b8a6469c91092f68beb76b77501c3920bb4b
Reviewed-on: https://github.com/flang-compiler/f18/pull/477
Tree-same-pre-rewrite: false

[flang] Fix LEN(char array), it is not elemental.

Original-commit: flang-compiler/f18@b44eb2e7b1fd8d86e95d3c24014e542bdb39877d
Reviewed-on: https://github.com/flang-compiler/f18/pull/477
Tree-same-pre-rewrite: false

[flang] allow alternate return indicators

Original-commit: flang-compiler/f18@a04150a4f96f251e7b4a940877ef421a60c1a163
Reviewed-on: https://github.com/flang-compiler/f18/pull/477
Tree-same-pre-rewrite: false

[flang] Allow for FINAL procedures in PDT instantiation

Original-commit: flang-compiler/f18@e276374b29a5aa9dc9c2c257e6059af5fcdf0529
Reviewed-on: https://github.com/flang-compiler/f18/pull/477
Tree-same-pre-rewrite: false

[flang] Fix correction of misparsed struct const as actual arg, and semantics of MODULE PROCEDURE in INTERFACE

Original-commit: flang-compiler/f18@6c86de6cef0079ef689211c09624ff0e0ecd71a4
Reviewed-on: https://github.com/flang-compiler/f18/pull/477
Tree-same-pre-rewrite: false

[flang] Allow some BOZ usage when unambiguous (extension)

Original-commit: flang-compiler/f18@bf3bd54c88492c91f749896d33c6aae79a830acd
Reviewed-on: https://github.com/flang-compiler/f18/pull/477
Tree-same-pre-rewrite: false

[flang] Rearrange references to AllSources singleton, fix FindScope for module files

Original-commit: flang-compiler/f18@50ccc1c819d274c0f40358bf15b5f7ac4c7a199a
Reviewed-on: https://github.com/flang-compiler/f18/pull/477
Tree-same-pre-rewrite: false

[flang] Fix spelling of ISHFT

Original-commit: flang-compiler/f18@3c93c40ed504eac555cde3f3f4f443af989db6fd
Reviewed-on: https://github.com/flang-compiler/f18/pull/477
Tree-same-pre-rewrite: false

[flang] Placeholders for some standard modules

Original-commit: flang-compiler/f18@a7182af0d5a6c66faab45977554c1074a3fb9d7f
Reviewed-on: https://github.com/flang-compiler/f18/pull/477
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#475 from flang-compiler/tsk-darwin

Fix test_folding.sh to work on MacOS

Original-commit: flang-compiler/f18@7a21f8f09ef3137e47ec7fad3193ba78c0070825
Reviewed-on: https://github.com/flang-compiler/f18/pull/475

[flang] Fix test_folding.sh to work on MacOS

There were a couple of small incompatibilities:
- There is no `ldd` on MacOS; instead use `otools -L`.
  This has not been tested when libpgmath is linked in to f18.
- `wc` outputs spaces where on Linux it outputs tabs; change how
  the number of lines is extracted to work on both.

Also, fix a bug: change `passed_warnings` to `$passed_warnings`.

Original-commit: flang-compiler/f18@5bede9e188e0f5e6b8ac922725d9d19a6aae96e6
Reviewed-on: https://github.com/flang-compiler/f18/pull/475

[flang] Merge pull request flang-compiler/f18#462 from flang-compiler/tsk-doc

Update description of semantic analysis

Original-commit: flang-compiler/f18@f4ae518a891e1ca1622ae13bc1d27bb51f3a7a7b
Reviewed-on: https://github.com/flang-compiler/f18/pull/462

[flang] Address more review comments

Original-commit: flang-compiler/f18@c7b3a39aa5775a64e0ea6ae20d891b1441a2e221
Reviewed-on: https://github.com/flang-compiler/f18/pull/462

[flang] Fix typos, adjust nested list formatting

Original-commit: flang-compiler/f18@c07a86ce218b52b84f2e9f4fe8e566c3a28ce441
Reviewed-on: https://github.com/flang-compiler/f18/pull/462
Tree-same-pre-rewrite: false

[flang] Update description of semantic analysis

Semantics.md described the plans for semantic analysis as of some
time ago. Update it to document what has been implemented.

Original-commit: flang-compiler/f18@d32e34067127aaba139ffd6beee2ad9b41c8aa6c
Reviewed-on: https://github.com/flang-compiler/f18/pull/462
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#472 from flang-compiler/pmk-ta-fixes

Roll up some fixes to problems found running more correctness tests

Original-commit: flang-compiler/f18@8e192713ac6ff817efba773a24c38471b397ed15
Reviewed-on: https://github.com/flang-compiler/f18/pull/472

[flang] Reformatting before merging

Original-commit: flang-compiler/f18@9f084c1da60024637126ac7c236653dc79c71fc0
Reviewed-on: https://github.com/flang-compiler/f18/pull/472

[flang] Two more fixes made while waiting for code review

Original-commit: flang-compiler/f18@6dc58004abb025c653896957bdc774ed6e954965
Reviewed-on: https://github.com/flang-compiler/f18/pull/472
Tree-same-pre-rewrite: false

[flang] Address review comment

Original-commit: flang-compiler/f18@17be1f6a7db3aff8453e0cf4e8ec982122b08142
Reviewed-on: https://github.com/flang-compiler/f18/pull/472
Tree-same-pre-rewrite: false

[flang] Handle large integer literals without kinds better

Original-commit: flang-compiler/f18@381ea32d57aa65e52dbde96f6c61baabd95f4dd9
Reviewed-on: https://github.com/flang-compiler/f18/pull/472
Tree-same-pre-rewrite: false

[flang] document non-support for PGI ALLOCATE(TYPE(t)::...)

Original-commit: flang-compiler/f18@67420da79cb14cf2f3f7a5aa649b93722807bde7
Reviewed-on: https://github.com/flang-compiler/f18/pull/472
Tree-same-pre-rewrite: false

[flang] Final fixes before review

Original-commit: flang-compiler/f18@efe5c1b8ec60f7c3d2a083da12924bc4523e6f72
Reviewed-on: https://github.com/flang-compiler/f18/pull/472
Tree-same-pre-rewrite: false

[flang] PRECISION, RANGE, RADIX

Original-commit: flang-compiler/f18@de0bf5a18f74f2041c85149e52781e8f80d0352b
Reviewed-on: https://github.com/flang-compiler/f18/pull/472
Tree-same-pre-rewrite: false

[flang] Complete folding of intermixed array and component references

Original-commit: flang-compiler/f18@70db03e4ac4f74371ead09f4a5d48f32317de8a9
Reviewed-on: https://github.com/flang-compiler/f18/pull/472
Tree-same-pre-rewrite: false

[flang] Fix intrinsic folding after merging changes

Original-commit: flang-compiler/f18@a982c34b6f97c9cd173538724e91afc70f585012
Reviewed-on: https://github.com/flang-compiler/f18/pull/472
Tree-same-pre-rewrite: false

[flang] Defer conversions to objects; fix some intrinsic table entries

more fixes

Access components of constant structures

Apply implicit typing to dummy args used in automatic array dimensions

SELECTED_INT_KIND and SELECTED_REAL_KIND

Finish SELECTED_{INT,REAL}_KIND and common cases of ALL()/ANY()

Original-commit: flang-compiler/f18@e9f8e53e55867863ca06461fb6edd965c86352c7
Reviewed-on: https://github.com/flang-compiler/f18/pull/472
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#468 from flang-compiler/jpr-folding-warnings

Add location to folding warnings and related tests and prevent spurious "re-folding"

Original-commit: flang-compiler/f18@0b2b40ae99cfe44b2371c13dcd2f38a73928dca1
Reviewed-on: https://github.com/flang-compiler/f18/pull/468

[flang] Add semantic error test for integer constant containing division by zero

Original-commit: flang-compiler/f18@650cfac5397236373e3f8c4ca7a1e15e6f33e0a4
Reviewed-on: https://github.com/flang-compiler/f18/pull/468

[flang] Make integer divide by zero in constants a fatal error

Original-commit: flang-compiler/f18@e5acff6b638a7be1c48b368791f51ef026601393
Reviewed-on: https://github.com/flang-compiler/f18/pull/468
Tree-same-pre-rewrite: false

[flang] removed a relicate comment

Original-commit: flang-compiler/f18@f25113b84edbd991b62fb07b4728e52ffae321a0
Reviewed-on: https://github.com/flang-compiler/f18/pull/468
Tree-same-pre-rewrite: false

[flang] Fix support of parenthesized arguments in function folding

Original-commit: flang-compiler/f18@1ecb07cddfd884742ab4a39f28ad5e6ec6d00af9
Reviewed-on: https://github.com/flang-compiler/f18/pull/468
Tree-same-pre-rewrite: false

[flang] more folding edge cases tests

Original-commit: flang-compiler/f18@21c0ec4cc4cc367fec98c8f225e2a7d1bede5ba8
Reviewed-on: https://github.com/flang-compiler/f18/pull/468
Tree-same-pre-rewrite: false

[flang] Adding tests for folding edge case (overflows...)

Original-commit: flang-compiler/f18@6893775dee6cdc85e9ccffd9d57659ce9ef8f68a
Reviewed-on: https://github.com/flang-compiler/f18/pull/468
Tree-same-pre-rewrite: false

[flang] Folding improvments:
  - Add location to non-fatal error message (context was not given
    a location before folding in semantics).
  - Avoid refolding expression from scratch several times (update GenericExprWrapper
    after folding). So far, warning messages were generated twice per parametere init
    expressions.

Original-commit: flang-compiler/f18@bf7f6cf9cde1c6822b4daeaa44d4f67ffbaef197
Reviewed-on: https://github.com/flang-compiler/f18/pull/468
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#470 from flang-compiler/by-mp-gram

Re-write OpenMP 4.5 grammar documentation

Original-commit: flang-compiler/f18@bac3a89f81df6293f6a2b4e3f538b8fe75e0decc
Reviewed-on: https://github.com/flang-compiler/f18/pull/470

[flang] improvement for atomic construct

Original-commit: flang-compiler/f18@d57ef4a669d30bc2834872450d5cbb4401ddec89
Reviewed-on: https://github.com/flang-compiler/f18/pull/470

[flang] improvement for 'Re-write OpenMP 4.5 grammar doc with BNF'

Original-commit: flang-compiler/f18@e17e74104bf23bad2dbade8e04a2eb58902a9f34
Reviewed-on: https://github.com/flang-compiler/f18/pull/470
Tree-same-pre-rewrite: false

[flang] Re-write OpenMP 4.5 grammar doc with BNF

Original-commit: flang-compiler/f18@fe06ea9f607ab608cceaae762b2c92f37c136ee2
Reviewed-on: https://github.com/flang-compiler/f18/pull/470
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#469 from flang-compiler/jpr-fold-parameter-fix

Prevent possible infinite loop in parameter folding

Original-commit: flang-compiler/f18@debeaedfc33a9c8d8150a53faedb9d07771c1693
Reviewed-on: https://github.com/flang-compiler/f18/pull/469

[flang] add test for parameter infinite loop

Original-commit: flang-compiler/f18@552568c39764972b4e21ebeb6e9f4337eee2eb38
Reviewed-on: https://github.com/flang-compiler/f18/pull/469

[flang] fix error message typo

Original-commit: flang-compiler/f18@049163e0d4d3f65f5b30213716ac5c087ffe2053
Reviewed-on: https://github.com/flang-compiler/f18/pull/469
Tree-same-pre-rewrite: false

[flang] Prevent possible infinte loop in parameter folding

Original-commit: flang-compiler/f18@38360930ce5b63987bc17fa235016743b90168ae
Reviewed-on: https://github.com/flang-compiler/f18/pull/469
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#464 from flang-compiler/klausler-patch-1

Update FortranForCProgrammers.md

Original-commit: flang-compiler/f18@a1659546443059faec2d19661e0e6d279d03625c
Reviewed-on: https://github.com/flang-compiler/f18/pull/464

[flang] Update FortranForCProgrammers.md

Refine the text describing differences between C and Fortran pointers to correct an erroneous statement (that pointers cannot point to allocatables).  Fixes bug flang-compiler/f18#461.

Original-commit: flang-compiler/f18@eaa3c10aa814ae3b03a33817bedf52f3135d88d0
Reviewed-on: https://github.com/flang-compiler/f18/pull/464

[flang] Merge pull request flang-compiler/f18#467 from flang-compiler/jpr-allocate-checks

Fix: catch subroutine symbols in ALLOCATE

Original-commit: flang-compiler/f18@730191fcafc66f398cd9c5085272be92ecfe0c68
Reviewed-on: https://github.com/flang-compiler/f18/pull/467

[flang] Fix: catch subroutine symbols in ALLOCATE

Original-commit: flang-compiler/f18@99d4b3dcd6a34c571979ca520b10033ee9a0b973
Reviewed-on: https://github.com/flang-compiler/f18/pull/467

[flang] Merge pull request flang-compiler/f18#466 from flang-compiler/pmk1

Fixes to problems in (mostly) expression semantics

Original-commit: flang-compiler/f18@c501ef36fadac0e289982b96231dc23a062b0280
Reviewed-on: https://github.com/flang-compiler/f18/pull/466

[flang] Address review comments from Jean (thanks!)

Original-commit: flang-compiler/f18@5183c6196e36fa361d1f18717d741c2fe36a31df
Reviewed-on: https://github.com/flang-compiler/f18/pull/466

[flang] work in progress

checkpoint: changes build, tests all pass

many fixes, ready to test more

Further CLASS(*) support

More fixes for CLASS(*)

Hide data members of DynamicType

implement PRESENT() intrinsic

Original-commit: flang-compiler/f18@044ba12c20f77c130e3c468914ddc2d6c8652c6e
Reviewed-on: https://github.com/flang-compiler/f18/pull/466
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#465 from flang-compiler/pmk-fix-tim

Fix crash reported by Tim

Original-commit: flang-compiler/f18@6ad320265a54acafd724dc28f6a1e7a6a875246c
Reviewed-on: https://github.com/flang-compiler/f18/pull/465

[flang] Fix crash reported by Tim

Original-commit: flang-compiler/f18@7fe2d197ea572f61b89910c4f074768f7b3a390b
Reviewed-on: https://github.com/flang-compiler/f18/pull/465

[flang] Merge pull request flang-compiler/f18#463 from flang-compiler/pmk-fix-brian

Fix bug with comment clipping on compiler directives

Original-commit: flang-compiler/f18@9307806d7ab8942d61294c97362a2031d1c4b0c5
Reviewed-on: https://github.com/flang-compiler/f18/pull/463

[flang] Fix bug with comment clipping on compiler directives

Original-commit: flang-compiler/f18@3f4375c57cbfd98fa1a507d571fb428e8ca96a32
Reviewed-on: https://github.com/flang-compiler/f18/pull/463

[flang] Merge pull request flang-compiler/f18#460 from flang-compiler/pmk-fix-brian

Strip comments from source and directive lines after macro replacement

Original-commit: flang-compiler/f18@ab5794470a7e8fbf2dde8ed724f0a05f9bf3abf2
Reviewed-on: https://github.com/flang-compiler/f18/pull/460

[flang] Strip comments from source and directive lines after macro replacement

Original-commit: flang-compiler/f18@ecf22e6698e82b36e5d709aa0362ac9f7591ea89
Reviewed-on: https://github.com/flang-compiler/f18/pull/460

[flang] Merge pull request flang-compiler/f18#455 from flang-compiler/tsk4

Change parse tree to allow DO loop over REAL

Original-commit: flang-compiler/f18@2771ee8dd8c69eadbaaab2b02e06f586b5f26af3
Reviewed-on: https://github.com/flang-compiler/f18/pull/455

[flang] Update extensions doc for DO loop over REAL

Original-commit: flang-compiler/f18@bc8ea466fcd129b895288b4c6c1ac81336e54dab
Reviewed-on: https://github.com/flang-compiler/f18/pull/455

[flang] Address review comments

Use better names for template parameters of `LoopBounds`, and also
for the constructor arguments.

Use two overloadings of `loopBounds()` instead of `std::is_same_v<>`.

Original-commit: flang-compiler/f18@a2c0c75462caad57af40aa46a58131e946e21ce7
Reviewed-on: https://github.com/flang-compiler/f18/pull/455
Tree-same-pre-rewrite: false

[flang] Change parse tree to allow DO loop over REAL

It is a common extension to allow DO loops with REAL variable and
bounds. The parse tree currently parses those with the variable
as `scalar-int-variable-name` and the bounds as `scalar-int-expr`.
That causes the INTEGER constraint to be enforced automatically.

Change the grammar and parse tree to treat them as `scalar-variable-name`
and `scalar-expr`. This allows the name and expression to be REAL,
but we will have to verify that they aren't any other type (in a future
change).

To accomplish this, add a template parameter to `LoopBounds` for the type
of the variable name (always `Scalar<Name>` or `Scalar<Integer<Name>>`).
We sometimes need names for the instantiations of `LoopBounds` so add
type aliases like `LoopControl::Bounds` for each one.

Original-commit: flang-compiler/f18@d75aa039701186584d46f0126dcdc1186515a058
Reviewed-on: https://github.com/flang-compiler/f18/pull/455
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#452 from flang-compiler/ps_do_c1121

Added a test for C1121, DO scalar-mask-expr cannot reference IMPURE procedure

Original-commit: flang-compiler/f18@83842cc1b8e83fb2fc41911a410c2e5c335492ea
Reviewed-on: https://github.com/flang-compiler/f18/pull/452

[flang] Added a TODO to include the name of the IMPURE procedure in the error
message for referencing in IMPURE procedure in the scalar-mask-expr of
a DO CONCURRENT.

Also removed a bogus comment from the test.

Both of these changes were in response to review comments.

Original-commit: flang-compiler/f18@4447d59b3982218db131c5ce9a78b8ddb77bfe68
Reviewed-on: https://github.com/flang-compiler/f18/pull/452

[flang] Added a test for C1121 -- in a concurrent DO loop, the
scalar-mask-expr cannot reference an IMPURE procedure.

Original-commit: flang-compiler/f18@0684c6ccc23213865d65e8b09c1fbf07436bdc00
Reviewed-on: https://github.com/flang-compiler/f18/pull/452
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#453 from flang-compiler/by-mp-parser-fix

OpenMP 4.5 grammar related minor fixes

Original-commit: flang-compiler/f18@2a1c37d251fe434a40a19bc9529ca831933cd855
Reviewed-on: https://github.com/flang-compiler/f18/pull/453

[flang] OpenMP 4.5 grammar related minor fixes

1. typo and trailing spaces within OpenMP-4.5-grammar.txt

2. parse (openmp-grammar.h) and unparse(unparse.cc) for:

   SCHEDULE ([modifier [, modifier]:]kind[, chunk_size])
   Modifier ->  MONITONIC | NONMONOTONIC | SIMD

where ":" is optional except at least one modifier is present.

Original-commit: flang-compiler/f18@5cebae50390a1b22316ef2d86e87f2dabaaaa61f
Reviewed-on: https://github.com/flang-compiler/f18/pull/453

[flang] Merge pull request flang-compiler/f18#451 from flang-compiler/pmk-fix-val-bug

Allow use of (x?"a":"b") as a message argument

Original-commit: flang-compiler/f18@bbf5b816ec131eae384340ca650bada4d6001fb4
Reviewed-on: https://github.com/flang-compiler/f18/pull/451

[flang] Allow use of (x?"a":"b") as a message argument

Original-commit: flang-compiler/f18@c0d4e5545597fa744f53d2674935bc8de7793895
Reviewed-on: https://github.com/flang-compiler/f18/pull/451

[flang] Merge pull request flang-compiler/f18#449 from flang-compiler/pmk-ps-bug

Handle remaining cases in expression tree traversal

Original-commit: flang-compiler/f18@40cb0ada0f52ff352b09e88216a452c4faf11089
Reviewed-on: https://github.com/flang-compiler/f18/pull/449

[flang] Add & use mutators for Substring, Triplet, CoarrayRef

Original-commit: flang-compiler/f18@cc2de361fa5d2ee41a91e256e33003baa892d4d7
Reviewed-on: https://github.com/flang-compiler/f18/pull/449

[flang] Fix warning

Original-commit: flang-compiler/f18@4fcf88901c012cedac99869dc4ff689e6ab35803
Reviewed-on: https://github.com/flang-compiler/f18/pull/449
Tree-same-pre-rewrite: false

[flang] Address review comment

Original-commit: flang-compiler/f18@5d20cd48b6bf3afc4c6fcea69faf50e40604f6a7
Reviewed-on: https://github.com/flang-compiler/f18/pull/449
Tree-same-pre-rewrite: false

[flang] dodge clang build problem with constexpr

Original-commit: flang-compiler/f18@83995a5a981dc25babd87ebbc816f026f3033b2e
Reviewed-on: https://github.com/flang-compiler/f18/pull/449
Tree-same-pre-rewrite: false

[flang] Remove debugging

Original-commit: flang-compiler/f18@1db626f8385d24b0c9fc4d97af6e727a2516ccfd
Reviewed-on: https://github.com/flang-compiler/f18/pull/449
Tree-same-pre-rewrite: false

[flang] Fix folding of substring

Original-commit: flang-compiler/f18@62dc5e0c93d9f051ef936ee7a281240fe3657b35
Reviewed-on: https://github.com/flang-compiler/f18/pull/449
Tree-same-pre-rewrite: false

[flang] Handle remaining cases in expression traversal

Original-commit: flang-compiler/f18@5cb0de58d4cba1bae3f3e67b850dfcbc0ac586fc
Reviewed-on: https://github.com/flang-compiler/f18/pull/449
Tree-same-pre-rewrite: false

[flang] Merge pull request flang-compiler/f18#450 from flang-compiler/by-pgf90-mp

Add -mp option for pgf90 in the presence of -fopenmp

Original-commit: flang-compiler/f18@e07b20a7993f03da25ac104b96b7c2f4f5faec5a
Reviewed-on: https://github.com/flang-compiler/f18/pull/450

[flang] Add -mp option for pgf90 in the presence of -fopenmp

Original-commit: flang-compiler/f18@a9d7287420c4d48ab0dfbc2942eeb3c454c41648
Reviewed-on: https://github.com/flang-compiler/f18/pull/450

[flang] Merge pull request flang-compiler/f18#444 from flang-compiler/pmk-msg-format

Replace formatting of CharBlock & string

Original-commit: flang-compiler/f18@359bedbefdea13c84182c1ba1691249fedaabfae
Reviewed-on: https://github.com/flang-compiler/f18/pull/444

[flang] Remove support for Names in messages for now.

Original-commit: flang-compiler/f18@15d38c7059352cb4d6d8df28a35cbde3b0fe92c5
Reviewed-on: https://github.com/flang-compiler/f18/pull/444

[flang] Merge with recent changes

Original-commit: flang-compiler/f18@56a72cbbd66d0aa0b3e9a1b0e2f3a71f467d62f1
Reviewed-on: https://github.com/flang-compiler/f18/pull/444
Tree-same-pre-rewrite: false

[flang] Replace formatting of CharBlock & string

Preserve generated strings until consumed by formatting.

bugfix from premature push

Address review comments

Last fix(?)

Use %s formatting for CharBlocks and strings

Use new formatting and fix usage of std::forward<>()

Use forward_list rather than vector to save strings

Original-commit: flang-compiler/f18@8ea478420fd21a26a77c6b4e05c73529a566f4a5
Reviewed-on: https://github.com/flang-compiler/f18/pull/444
Tree-same-pre-rewrite: false

[flang] Change a user error to an internal error in ALLOCATE semantic check

Merge pull request flang-compiler/f18#448 from flang-compiler/jpr-check-allocate

Original-commit: flang-compiler/f18@66e766ac9ae2b062c3b1d8aaee63c42be2ffacf2

[flang] Change a user error to an internal error in ALLOCATE semantic check

Original-commit: flang-compiler/f18@d9a9b59634761b328e1540ba9ef2b04c19318fd8