Commit Graph

2485 Commits

Author SHA1 Message Date
Tim Keith 026d8807f4 [flang] Add missing check for unresolved name
Summary:
The name in an InputItem isn't necessarily resolved if an error occurred,
so it needs to be checked.

Fixes https://bugs.llvm.org/show_bug.cgi?id=45477

Reviewers: klausler, PeteSteinfeld, DavidTruby, jdoerfert, sscalpone

Reviewed By: klausler, sscalpone

Subscribers: llvm-commits

Tags: #llvm, #flang

Differential Revision: https://reviews.llvm.org/D78685
2020-04-23 07:00:38 -07:00
Valentin Clement a6c1692cb3 [Flang] fix dependency issues after D78215
Patch D78215 changes various dependencies in the CMakeLists.txt. This
results in error while compiling. This patch fixes the issue.

Reviewers: DavidTruby

Differential Revision: https://reviews.llvm.org/D78340
2020-04-21 20:32:11 +01:00
Rainer Orth 0535fab237 [Flang][test] Don't set PATH in flang/test/Semantics/common.sh
Currently, many `Flang :: Semantics` tests FAIL on Solaris.  The failure
mode is always the same:

  actual at 67: Name in ALLOCATE statement must be a variable name
  expect at 67: ERROR: Name in ALLOCATE statement must be a variable name

It turns out the issue is twofold here:

- The awk script embedded in `flang/test/Semantics/common.sh` uses a string
  value for `FS`, which isn't supported by traditional awk as documented in
  the GNU autoconf manual.

- Even though /usr/gnu/bin (with gawk installed as awk) is in my build
  environment's `PATH`, still /bin/awk is used

Although the proper fix would probably be to avoid the unportability, it's
easy to work around it for now.  `common.sh` above is the only script in
the whole tree that for unknown reasons overrides `PATH` to
`/usr/bin:/bin`, unnecessarily creating this mess in the first place.  Just
removing that setting easily avoids the issue.

Tested on `amd64-pc-solaris2.11` and `sparcv9-sun-solaris2.11`.

Differential Revision: https://reviews.llvm.org/D78550
2020-04-21 14:32:57 +02:00
Anchu Rajendran c1c01212c4 [flang]Implemented Semantic Checkes for 5 data constraints
Summary:
 C874, C875, C878, C880 and C881 checks are implemented.

Differential Revision: https://reviews.llvm.org/D78008
2020-04-18 12:21:30 +05:30
Mehdi Chinoune 2d6b9dbfef [flang] Use the Flang cmake-functions to add targets.
Summary: It also removes the cycle-dependency between FortranSemantics and FortranEvaluate.

Reviewers: #flang, jdoerfert, sscalpone

Reviewed By: #flang, sscalpone

Subscribers: DavidTruby, schweitz, tskeith, mgorny, aartbik, llvm-commits

Tags: #flang, #llvm

Differential Revision: https://reviews.llvm.org/D78215
2020-04-16 15:51:30 +01:00
David Truby 29e71ceaee [flang] Add return statement to Logical opeator=.
This removes the current undefined behavior where the function has a return type
but no return statement.

Fixes: https://bugs.llvm.org/show_bug.cgi?id=45530
2020-04-15 13:18:42 +01:00
River Riddle ebf190fcda [llvm][ADT] Move TypeSwitch class from MLIR to LLVM
This class implements a switch-like dispatch statement for a value of 'T' using dyn_cast functionality. Each `Case<T>` takes a callable to be invoked if the root value isa<T>, the callable is invoked with the result of dyn_cast<T>() as a parameter.

Differential Revision: https://reviews.llvm.org/D78070
2020-04-14 15:14:41 -07:00
River Riddle 2f21a57966 [llvm][STLExtras] Move the algorithm `interleave*` methods from MLIR to LLVM
These have proved incredibly useful for interleaving values between a range w.r.t to streams. After this revision, the mlir/Support/STLExtras.h is empty. A followup revision will remove it from the tree.

Differential Revision: https://reviews.llvm.org/D78067
2020-04-14 15:14:40 -07:00
Eric Schweitz d58a405de6 [flang] Upstream patch to enable the fir-ops test. bug 45487
Differential revision: https://reviews.llvm.org/D77834
2020-04-14 10:02:04 -07:00
Mehdi Amini ed6c452edc Add missing dependencies on the flang test target
Without this, the LLVM utilities (FileCheck) aren't built when running
`ninja check-flang` and it fails with:

llvm-project/llvm/utils/lit/lit/llvm/subst.py:134: fatal: Did not find FileCheck in...

Also the modules aren't built without depending on `module_files`, which
makes multiple tests failing.

Differential Revision: https://reviews.llvm.org/D78036
2020-04-13 18:23:01 +00:00
David Truby 413467f9ec [flang] [NFC] Adjust README.md for upstreaming.
This changes the references and build instructions for Flang so that
they are correct now that F18 has been rechristened Flang and merged
with LLVM.

Reviewed at: https://github.com/flang-compiler/f18/pull/909
2020-04-09 21:15:48 +01:00
David Truby 89c7d9633b [flang] Temporarily XFAIL failing test Fir/fir-ops.fir 2020-04-09 18:36:17 +01:00
David Truby a1726e65bc [flang] Add dependency on libSemantics to libEvaluate.
When building flang with LLVM HEAD, the unittests fail to link with ld.bfd or
ld.gold due to a linker ordering issue. Adding libSemantics as a dependency to
libEvaluate seems to fix that issue.

Reviewed at: https://github.com/flang-compiler/f18/pull/1104
2020-04-09 16:41:36 +01:00
David Truby 55d5e6cbe2 [flang] Remove flatten and merge upstreaming script.
Original-commit: flang-compiler/f18@21f3c455e8
2020-04-09 15:54:31 +01:00
David Truby 2d65baf845 [flang] Adjust README.md for upstreaming to LLVM.
Original-commit: flang-compiler/f18@24d23963b8
2020-04-09 15:54:26 +01:00
Tim Keith 0bd73f2c38 [flang] Convert std::uint64_t to std::uintmax_t as well
Original-commit: flang-compiler/f18@92a1ef6810
Reviewed-on: https://github.com/flang-compiler/f18/pull/1101
2020-04-06 10:06:34 -07:00
Tim Keith 76d71354db [flang] Add message formatting for std::int64_t
There is no printf formatting string for std::int64_t. Instead we have
to cast to std::intmax_t and use `%jd`. This change simplifies that by
automatically converting std::int64_t to std::intmax_t when formatting
messages.

Original-commit: flang-compiler/f18@8a2343dfff
Reviewed-on: https://github.com/flang-compiler/f18/pull/1101
Tree-same-pre-rewrite: false
2020-04-03 17:28:23 -07:00
Caroline Concatto 5c7ecef1e4 [flang] Adjust supported compilers statement in F18 readme
This patch is an update of the readme according to compilations done and
also information given in flang dev mailing list.
[F18] Which compilers configurations f18 have being tested/built?

Signed-off-by: Caroline Concatto <caroline.concatto@arm.com>

Original-commit: flang-compiler/f18@3749b463dc
Reviewed-on: https://github.com/flang-compiler/f18/pull/1087
2020-04-06 16:33:12 +01:00
peter klausler 455ed8de4f [flang] Process names in ASSIGN and assigned GOTO
Allow ASSIGNed integer variables as formats

Address review comment

Original-commit: flang-compiler/f18@361a151508
Reviewed-on: https://github.com/flang-compiler/f18/pull/1099
2020-04-03 14:58:07 -07:00
peter klausler 4d54bb7af8 [flang] Define CHARACTER runtime API, establish placeholder implementations
formatting

Original-commit: flang-compiler/f18@1d287d9d59
Reviewed-on: https://github.com/flang-compiler/f18/pull/1096
2020-04-02 09:38:25 -07:00
Pete Steinfeld 2b790490b6 [flang] Checks for constraints C731 through C740
In most cases, I just added the contraint names to the code and tests.

I implemented the following checks:
  - C736 A child type with a coarray ultimate component must have a parent with
    a coarray ultimate component.
  - C737 A child type with and EVENT_TYPE or LOCK_TYPE component must have a
    parent either which is EVENT_TYPE or LOCK_TYPE or a type with an EVENT_TYPE
    or LOCK_TYPE component.
  - C740 Sequence types must contain at least on component
  - C740 Data components of sequence types must either be of an intrinsic type
    or a sequenced derived type.

After implementing these checks, some tests had new errors unrelated to their
original purpose, so I fixed them.

Original-commit: flang-compiler/f18@098f01bc47
Reviewed-on: https://github.com/flang-compiler/f18/pull/1097
2020-04-02 06:41:33 -07:00
Tim Keith 1f8790050b [flang] Reformat with latest clang-format and .clang-format
Original-commit: flang-compiler/f18@9fe84f45d7
Reviewed-on: https://github.com/flang-compiler/f18/pull/1094
2020-03-28 21:00:16 -07:00
Isuru Fernando ea5efd1ea8 [flang] Support platforms without strerror_r
Original-commit: flang-compiler/f18@0575b54cc7
Reviewed-on: https://github.com/flang-compiler/f18/pull/1068
2020-03-28 16:46:43 -05:00
Isuru Fernando ddb68d248c [flang] Support windows where mkstemp and ftruncate doesn't exist
Original-commit: flang-compiler/f18@7b7e30845d
Reviewed-on: https://github.com/flang-compiler/f18/pull/1069
2020-03-28 15:07:03 -05:00
peter klausler 84a099df05 [flang] Fix missing substring bounds (bug flang-compiler/f18#1091)
Original-commit: flang-compiler/f18@3b0c150b2e
Reviewed-on: https://github.com/flang-compiler/f18/pull/1093
2020-03-27 14:17:25 -07:00
peter klausler 7a77c20dbd [flang] Semantics for SELECT CASE
Prep for review

Respond to review comments

Fix first line in new test

Original-commit: flang-compiler/f18@12f6f30600
Reviewed-on: https://github.com/flang-compiler/f18/pull/1089
2020-03-27 12:02:11 -07:00
Steve Scalpone 282358fac9 [flang] [mlir rebase] Add MLIR config and react to MLIR name changes (flang-compiler/f18#1090)
[mlir rebase] Add MLIR config and react to MLIR name changes

Similar to flang-compiler/f18#1085.  Now use the MLIR package to set up paths for include files and libraries.  Three MLIR names changed:
 * VectorOpsDialect to VectorDialect
 * AffineOpsDialect to AffineDialect
 * createVectorizePass to createSuperVectorizePass

Update README.md to explain how to link with MLIR. Update the example gcc to version 8.3.

Update drone.io config to define -DMLIR_DIR

Co-authored-by: Jean Perier <jperier@nvidia.com>

Original-commit: flang-compiler/f18@116f64315f
Reviewed-on: https://github.com/flang-compiler/f18/pull/1090
2020-03-27 09:23:32 -07:00
Patrick McCormick 6c16aa4f67 [flang] A rework of the cmake build components for in and out of tree builds.
In general all the basic functionality seems to work and removes some redundancy
and more complicated features in favor of borrowing infrastructure from LLVM
build configurations. Here's a quick summary of details and remaining issues:

  * Testing has spanned Ubuntu 18.04 & 19.10, CentOS 7, RHEL 8, and
    MacOS/darwin.  Architectures include x86_64 and Arm.  Without
    access to Window nothing has been tested there yet.

  * As we change file and directory naming schemes (i.e.,
    capitalization) some odd things can occur on MacOS systems with
    case preserving but not case senstive file system configurations.
    Can be painful and certainly something to watch out for as any
    any such changes continue.

  * Testing infrastructure still needs to be tuned up and worked on.
    Note that there do appear to be cases of some tests hanging (on
    MacOS in particular).  They appear unrelated to the build
    process.

  * Shared library configurations need testing (and probably fixing).

  * Tested both standalone and 'in-mono repo' builds.  Changes for
    supporting the mono repo builds will require LLVM-level changes that
    are straightforward when the time comes.

  * The configuration contains a work-around for LLVM's C++ standard mode
    passing down into Flang/F18 builds (i.e., LLVM CMake configuration would
    force a -std=c++11 flag to show up in command line arguments.  The
    current configuration removes that automatically and is more strict in
    following new CMake guidelines for enforcing C++17 mode across all the
    CMake files.

  * Cleaned up a lot of repetition in the command line arguments.  It
    is likely that more work is still needed to both allow for
    customization and working around CMake defailts (or those
    inherited from LLVM's configuration files). On some platforms agressive
    optimization flags (e.g. -O3) can actually break builds due to the inlining
    of templates in .cpp source files that then no longer are available for use
    cases outside those source files (shows up as link errors).   Sticking at -O2
    appears to fix this.  Currently this CMake configuration forces this in
    release mode but at the cost of stomping on any CMake, or user customized,
    settings for the release flags.

  * Made the lit tests non-source directory dependent where appropriate. This is
    done by configuring certain test shell files to refer to the correct paths
    whether an in or out of tree build is being performed. These configured
    files are output in the build directory. A %B substitution is introduced in
    lit to refer to the build directory, mirroring the %S substitution for the
    source directory, so that the tests can refer to the configured shell scripts.

Co-authored-by: David Truby <david.truby@arm.com>

Original-commit: flang-compiler/f18@d1c7184159
Reviewed-on: https://github.com/flang-compiler/f18/pull/1045
2020-03-26 18:17:04 +00:00
David Truby cc77f818f2 [flang] Add explicit nullptr check in initialisation of inDoConstruct.
This explicit check is needed as we are using braced initialisation here so
implicit narrowing conversions (such as pointer to bool) are not allowed.

Original-commit: flang-compiler/f18@ff8dad10bf
Reviewed-on: https://github.com/flang-compiler/f18/pull/1083
2020-03-25 18:37:31 +00:00
peter klausler c42f6314eb [flang] Semantics for ENTRY
initial test passes

Move some checks to check-declarations

Fix bugs found in testing

Get tests all passing

Allow declaration statements for function result to follow ENTRY

Fix another bug

Original-commit: flang-compiler/f18@e82cfee432
Reviewed-on: https://github.com/flang-compiler/f18/pull/1086
2020-03-24 14:30:34 -07:00
Pete Steinfeld e17e71735e [flang] Changes to enforce constraints C727 to C730 and most constraints related to attributes
The full list of constraints is C727, C728, C729, C730, C743, C755, C759, C778,
and C1543.

I added a function to tools.cpp to check to see if a symbol name is the name
of an intrinsic type.

The biggest change was to resolve-names.cpp to check to see if attributes were
either duplicated or in conflict with each other.  I changed all locations
where attributes were set to check for duplicates or conflicts.

I also added tests for all checks and annotated the tests and code with the
numbers of the constraints being tested/checked.

Original-commit: flang-compiler/f18@3f30e8a61e
Reviewed-on: https://github.com/flang-compiler/f18/pull/1084
2020-03-24 09:24:49 -07:00
David Truby 3214c18774 [flang] Remove non-alignment based divergences from LLVM formatting.
This only changs the clang-format file and adds documentation
referring to the new process for formatting code. A future commit
will perform a reformatting according to these new formatting
settings.

Original-commit: flang-compiler/f18@02531d788e
Reviewed-on: https://github.com/flang-compiler/f18/pull/945
2020-03-23 17:52:22 +00:00
David Truby 13ea73e42d [flang] Replace manual mmap with llvm::MemoryBuffer
The previous code had handling for cases when too many file descriptors may be
opened; this is not necessary with MemoryBuffer as the file descriptors are
closed after the mapping occurs. MemoryBuffer also internally handles the case
where a file is small and therefore an mmap is bad for performance; such files
are simply copied to memory after being opened.

Many places elsewhere in the code assume that the buffer is not empty, and the
old file opening code handles this by replacing an empty file with a buffer
containing a single newline. That behavior is now kept in the new MemoryBuffer
based code.

Original-commit: flang-compiler/f18@d34df84351
Reviewed-on: https://github.com/flang-compiler/f18/pull/1032
2020-03-24 13:35:01 +00:00
Caroline Concatto 8670e49901 [flang] [LLVMify F18] Replace the use std::ostream with LLVM streams llvm::ostream
This patch replaces the occurrence of std::ostream by llvm::raw_ostream.
In  LLVM Coding Standards[1] "All new code should use raw_ostream
instead of ostream".[1]

As a consequence, this patch also replaces the use of:
   std::stringstream by llvm::raw_string_ostream or llvm::raw_ostream*
   std::ofstream by llvm::raw_fd_ostream
   std::endl by '\n' and flush()[2]
   std::cout by llvm::outs()   and
   std::cerr by llvm::errs()

It also replaces  std::strerro by llvm::sys::StrError** , but NOT in  Fortran
runtime libraries

*std::stringstream were replaced by llvm::raw_ostream in all methods that
used std::stringstream as a parameter. Moreover, it removes the pointers to
these streams.

[1]https://llvm.org/docs/CodingStandards.html
[2]https://releases.llvm.org/2.5/docs/CodingStandards.html#ll_avoidendl

Signed-off-by: Caroline Concatto <caroline.concatto@arm.com>

Running clang-format-7

Signed-off-by: Caroline Concatto <caroline.concatto@arm.com>

Removing residue of ostream library

Signed-off-by: Caroline Concatto <caroline.concatto@arm.com>

Original-commit: flang-compiler/f18@a3507d44b8
Reviewed-on: https://github.com/flang-compiler/f18/pull/1047
2020-03-19 07:54:36 +00:00
peter klausler 9977b24a6d [flang] Improve error message for procedure passed as invalid argument to an intrinsic
Support forward references to sibling module procedures

Add tests, handle corner cases

Rename new test

Original-commit: flang-compiler/f18@234bb519cd
Reviewed-on: https://github.com/flang-compiler/f18/pull/1076
2020-03-18 14:04:08 -07:00
Tim Keith 61b1390e2a [flang] Check module subprogram against separate module procedure
When a module subprogram has the MODULE prefix the following must match
with the corresponding separate module procedure interface body:
- C1549: characteristics and dummy argument names
- C1550: binding label
- C1551: NON_RECURSIVE prefix

SubprogramMatchHelper performs all of these checks.

Rename separate-module-procs.f90 to separate-mp01.f90 so we can have
separate-mp02.f90 (etc).

Make ShapesAreCompatible public in characteristics.h.

Add Scope::IsSubmodule.

Original-commit: flang-compiler/f18@d121578af1
Reviewed-on: https://github.com/flang-compiler/f18/pull/1080
2020-03-17 16:01:59 -07:00
Tim Keith 824d198e31 [flang] Create symbols for args of separate-module-subprogram
A separate-module-subprogram is declared as `module procedure ...`
and gets its characteristics from the declaration of that name as
a separate module procedure. When we encounter one, we need to create
symbols in the new subprogram scope for the dummy arguments and
function return (if any).

The failure to create these symbols led to the bug in issue flang-compiler/f18#1054:
when a dummy argument was referenced, the compiler interpreted it as
an implicit declaration because there was no symbol for the argument.

Fixes flang-compiler/f18#1054.

Original-commit: flang-compiler/f18@4d3c4bac84
Reviewed-on: https://github.com/flang-compiler/f18/pull/1080
Tree-same-pre-rewrite: false
2020-03-17 16:01:59 -07:00
Tim Keith d1ce4d275f [flang] Fix location of name of Symbol for ProcEntity
When we encounter a ProcDecl and a symbol for it has already been
created, replace the CharBlock for the name with the one in the ProcDecl
as it is the "main" declaration of that name. This matches what is done
for an EntityDecl.

This moves the location of some error messages to a better source
location so update the affected tests.

Original-commit: flang-compiler/f18@514c0f2c94
Reviewed-on: https://github.com/flang-compiler/f18/pull/1080
Tree-same-pre-rewrite: false
2020-03-17 16:01:59 -07:00
peter klausler f4faeefe3d [flang] Do not emit a prefix for a default-kind character constant in AsFortran
Original-commit: flang-compiler/f18@4a3db55727
Reviewed-on: https://github.com/flang-compiler/f18/pull/1078
2020-03-17 12:35:31 -07:00
Tim Keith 6905526a10 [flang] Test cleanup
Fix omp-nested01.f90 so that it is not an expected failure. The test was
never enabled but I'm guessing this is what it's supposed to do.

Fix the instructions to include "make test" as part of running tests.

Original-commit: flang-compiler/f18@c351181cab
Reviewed-on: https://github.com/flang-compiler/f18/pull/1075
2020-03-16 10:46:17 -07:00
peter klausler 2bd473de82 [flang] more edits
Remove AllocateDefaultCharacter

Refinements in code review

Original-commit: flang-compiler/f18@688512ddc6
Reviewed-on: https://github.com/flang-compiler/f18/pull/1070
2020-03-16 09:57:12 -07:00
peter klausler 38ebace5b7 [flang] Complete formatting of pointer assignments, move to formatting.cpp with rest of AsFortran
Original-commit: flang-compiler/f18@9625317ee8
Reviewed-on: https://github.com/flang-compiler/f18/pull/1073
2020-03-13 09:52:15 -07:00
Luke Ireland da9d002b18 [flang] Added CMakeLists changes, moved config and made test scripts compatible.
All Fortran tests are now run in lit, except Preprocessing tests flang-compiler/f18#1052
Preprocessing tests are a separate kind of test, so will be sorted out
later.

Original-commit: flang-compiler/f18@3f99d35f3d
Reviewed-on: https://github.com/flang-compiler/f18/pull/1027
2020-03-13 13:54:24 +00:00
Luke Ireland f1a8eae3b6 [flang] Port all remaining regression tests to lit
We have re-classified a subset of the regression tests as unit tests and
now we are porting the remaining ones.

Test discovery and running is now performed by lit rather than ctest.
The tests continue to use their original scripts with minor
modifications. Most of the changes were mechanical and so scripted.
A few changes were made by hand. Details

Manual:
  * modfile09-*.f90 tests depend on being run together as some tests have
    dependencies on modules created by other tests. This will need
     separating out when porting away from test_modfile.sh, but for now,
     added modfile09-*.f90 to the Inputs directory and added a single
     tests modfile09.f90 to hold the run line.
  * getdefinition03-a.f90 includes a non-test file getdefinition03-b.f90.
    Manually edited the former to find the latter in Inputs so as to add
    only one test.
  * Same pattern for getsymbols03-{a,b}.f90

Auto:
  * Remaining tests have a lit RUN line added to them based on the type
    of test they are.
  * Failing tests also have an XFAIL line added to them.
  * Generic tests have their pre-existing RUN lines replaced with the
    word "EXEC" to avoid conflict with the added lit RUN line.

Original-commit: flang-compiler/f18@63ec0af9f4
Reviewed-on: https://github.com/flang-compiler/f18/pull/1027
Tree-same-pre-rewrite: false
2020-03-13 11:58:11 +00:00
Luke Ireland ee5fa1f233 [flang] Create a separate directory for unittests
Some of the regression tests are C programs that act as test harnesses
for the compiler internals as opposed to being Fortran inputs to test
the compiler in action. The former style of tests are analog to LLVM's
unittests and will not use the lit framework.

Change-Id: I0ff10e23f66ff843e8fff4c35cfb6559b9dab762

Original-commit: flang-compiler/f18@2bfddbe8f8
Reviewed-on: https://github.com/flang-compiler/f18/pull/1027
Tree-same-pre-rewrite: false
2020-03-13 11:58:11 +00:00
Luke Ireland a9d9261cf3 [flang] Re-enable semantics/altreturn{02,03} tests
These tests were disabled due to https://github.com/flang-compiler/f18/issues/407.
Previously these tests caused F18 to crash as the feature was not fully
implemented.

The altreturn feature is now implemented, so these tests can be
re-enabled. altreturn03 tested some negative cases which F18 correctly
diagnoses. Modified that test to expect these new error messages. Also
make the later cases in the test reachable.

These tests can now be ported by the script to lit-style tests.

Change-Id: Ib336c10d55068d9a26fc2deb43ad052e74e73456

Original-commit: flang-compiler/f18@4de19d7ba2
Reviewed-on: https://github.com/flang-compiler/f18/pull/1027
Tree-same-pre-rewrite: false
2020-03-13 11:58:11 +00:00
Jean Perier f856a5526a [flang] Support latest LLVM head with FIR - MLIR SideEffects interface change
Include new .td after LLVM changes:
0ddba0bd59

Tested to work with LLVM head ecd3e678bb
from 2020-03-13 01:45 am PCT

Backwards compatible with previous known compatible heads at least back to
fde9d33f71 from 2020-03-10, so need to
update LLVM builds if they previously work with FIR.

Original-commit: flang-compiler/f18@45454587c9
Reviewed-on: https://github.com/flang-compiler/f18/pull/1071
2020-03-13 04:06:31 -07:00
Isuru Fernando 231fae9087 [flang] Need <algorithm> for std::min and std::max (flang-compiler/f18#1063)
Original-commit: flang-compiler/f18@d0f9ef7742
Reviewed-on: https://github.com/flang-compiler/f18/pull/1063
2020-03-12 10:52:29 -07:00
Eric Schweitz 324bab9bf4 [flang] fix typo (flang-compiler/f18#1067)
Original-commit: flang-compiler/f18@4cdc9f75e2
Reviewed-on: https://github.com/flang-compiler/f18/pull/1067
2020-03-12 10:25:22 -07:00
David Truby 232711df35 [flang] Added documentation explaining the use of std::list (flang-compiler/f18#988)
Original-commit: flang-compiler/f18@094f558907
Reviewed-on: https://github.com/flang-compiler/f18/pull/988
2020-03-12 09:38:59 -07:00
RichBarton-Arm 3064bdcce9 [flang] Add initial CODE_OWNERS file (flang-compiler/f18#1066)
Original-commit: flang-compiler/f18@e5f369d086
Reviewed-on: https://github.com/flang-compiler/f18/pull/1066
2020-03-12 08:15:20 -07:00
jeanPerier 57f536a448 [flang] Add Fortran IR (FIR) MLIR dialect implementation (flang-compiler/f18#1035)
Adds FIR library that implements an MLIR dialect to which Fortran
parse-tree will be lowered to.

FIR is defined and documented inside FIROps.td added in this commit.
It is possible to generate a more readable description FIRLangRef.md
from FIROps.td following the related instructions added to the README.md
by this commit.

This patch adds FIR definition and implementation that allow parsing,
printing, and verifying FIR. FIR transformations and lowering to Standard
and LLVM dialects are not part of this patch. The FIR verifiers are verifying
the basic properties of FIR operations in order to provide a sufficient
frame for lowering. Verifiers for more advanced FIR properties can be added
as needed.

Coarrays are not covered by FIR defined in this patch.

This patch also adds tco tool that is meant to process FIR input files and
drives transformations on it. The tco tool is used for testing.
In this patch, it is only used to demonstrate parsing/verifying/
and dumping FIR with round-trip tests.

Note:
This commit does not reflect an actual work log, it is a feature-based split of the
changes done in the FIR experimental branch. The related work log can be found in the
commits between:

742edde572
and
2ff5524212

Changes on top of these original commits were made during this patch review.

Original-commit: flang-compiler/f18@30b428a51e
Reviewed-on: https://github.com/flang-compiler/f18/pull/1035
2020-03-11 21:47:22 -07:00
peter klausler 3b63571425 [flang] Use hash table for UnitMap, avoid C++ STL binary dependence
Scan FORMAT strings locally to avoid C++ binary runtime dependence when computing deepest parenthesis nesting

Remove a dependency on ostream from runtime

Remove remaining direct external references from runtime to C++ library binaries

Remove runtime dependences on lib/common

SetPos() and SetRec()

Instantiate templates for input

Begin input; rearrange locking, deal with CLOSE races

View()

Update error message in test to agree with compiler change

First cut at real input

More robust I/O runtime error handling

Debugging of REAL input

Add iostat.{h,cpp}

Rename runtime/numeric-* to runtime/edit-*

Move templates around, templatize integer output editing

Move LOGICAL and CHARACTER output from io-api.cpp to edit-output.cpp

Change pointer argument to reference

More list-directed input

Complex list-directed input

Use enum class Direction rather than bool for templates

Catch up with changes to master

Undo reformatting of Lower code

Use record number instead of subscripts for internal unit

Unformatted sequential backspace

Testing and debugging

Dodge bogus GCC warning

Add <cstddef> for std::size_t to fix CI build

Address review comments

Original-commit: flang-compiler/f18@50406b3496
Reviewed-on: https://github.com/flang-compiler/f18/pull/1053
2020-03-11 13:23:39 -07:00
Isuru Fernando 0a8a6cd921 [flang] Fix an ambiguous overload error
Original-commit: flang-compiler/f18@70fa71ff7b
Reviewed-on: https://github.com/flang-compiler/f18/pull/1029
2020-03-05 09:19:11 -06:00
peter klausler f7432ca7a6 [flang] Resolve known problems in shape analysis
Original-commit: flang-compiler/f18@ed2e4842d3
Reviewed-on: https://github.com/flang-compiler/f18/pull/1061
2020-03-11 13:17:03 -07:00
peter klausler 771c21c19f [flang] Repair C_LOC
Original-commit: flang-compiler/f18@dc1c95277d
Reviewed-on: https://github.com/flang-compiler/f18/pull/1061
Tree-same-pre-rewrite: false
2020-03-11 11:00:36 -07:00
peter klausler 886fb42ece [flang] Extend shape analysis to cope with ASSOCIATE construct entities better
Fix incomplete copy&paste

Another review comment addressed

Original-commit: flang-compiler/f18@a2e2593fa5
Reviewed-on: https://github.com/flang-compiler/f18/pull/1061
Tree-same-pre-rewrite: false
2020-03-10 16:46:25 -07:00
Isuru Fernando 59baf8b822 [flang] Rename EXTERN_C_END to FORTRAN_EXTERN_C_END
Since EXTERN_C_END is a macro defined in Windows system headers

Original-commit: flang-compiler/f18@4c6e5608ad
Reviewed-on: https://github.com/flang-compiler/f18/pull/1051
2020-03-06 00:51:41 -06:00
Tim Keith a40dbe7c41 [flang] Allow for vector subscript on LHS of assignment
Original-commit: flang-compiler/f18@38aefd41f0
Reviewed-on: https://github.com/flang-compiler/f18/pull/1062
2020-03-10 16:32:58 -07:00
Tim Keith 6ab50745c0 [flang] Fix scope accessibility check
The check for whether a private component is accessible was depending on
determining whether the source range of the current scope was within the
source range of the module that the component was declared in. This
could fail if the current scope was of kind `ImpliedDos` and had no
source range.

The fix is to add `Scope::Contains` to check the relationship by
traversing the parent links. These are created when the Scope is so are
always reliable. The source range of a scope is built up over time.

Original-commit: flang-compiler/f18@d787108637
Reviewed-on: https://github.com/flang-compiler/f18/pull/1060
2020-03-10 15:31:02 -07:00
peter klausler e03b20e66e [flang] Changes to get a clean build of f18 with latest clang
Prep for review

Original-commit: flang-compiler/f18@111f49061e
Reviewed-on: https://github.com/flang-compiler/f18/pull/1059
2020-03-10 13:12:52 -07:00
Tim Keith a0a1f519c0 [flang] Perform definability checks on LHS of assignment
If the pure context check succeeds, call `WhyNotModifiable` to verify
the LHS can be modified.

Detect assignment to whole assumed-size array.

Change `IsVariable` to return false for a parameter or a component or
array reference whose base it a parameter.

When analyzing an assignment statement, report an error if the LHS is
a constant expression. Otherwise it might get folded and when we detect
the problem later the error will be confusing.

Handle Substring on LHS of assignment. Change ExtractDataRef and IsVariable
to work on a Substring.

Fix IsImpliedShape and IsAssumedSize predicates in ArraySpec.

Fix C709 check in check-declarations.cpp.

Original-commit: flang-compiler/f18@f2d2657aab
Reviewed-on: https://github.com/flang-compiler/f18/pull/1050
2020-03-09 17:25:12 -07:00
Tim Keith c97e1c0a45 [flang] Change CheckDefinabilityInPureScope to return bool
Have CheckDefinabilityInPureScope and CheckCopyabilityInPureScope return
false when their checks fail and report errors so that we will be able
to avoid reporting extra errors in those cases.

Original-commit: flang-compiler/f18@305a3470e5
Reviewed-on: https://github.com/flang-compiler/f18/pull/1050
Tree-same-pre-rewrite: false
2020-03-09 17:25:12 -07:00
Tim Keith 2cc21cecf2 [flang] Change WhyNotModifiable to return optional
One overload of WhyNotModifiable returned an optional message while the
other returns a unique_ptr. Change the latter to be consistent with the
former and other message-returning functions in this file.

Also, reorder the if clauses to reduce the level of indentation.

Original-commit: flang-compiler/f18@864e9cfc7e
Reviewed-on: https://github.com/flang-compiler/f18/pull/1050
Tree-same-pre-rewrite: false
2020-03-09 17:25:12 -07:00
Tim Keith 0b130278a0 [flang] Fix handling of DataRef when analyzing CoindexedNamedObject
As we loop through the Components, maintain a pointer to the current
DataRef rather than moving it. This is more efficient and the previous
behavior caused illegal memory accesses.

Original-commit: flang-compiler/f18@cede2971ff
Reviewed-on: https://github.com/flang-compiler/f18/pull/1050
Tree-same-pre-rewrite: false
2020-03-09 17:25:12 -07:00
Steve Scalpone e0ca7b447b [flang] Fix for 'wrong constant folding of assumed-rank array' (flang-compiler/f18#1010)
https://github.com/flang-compiler/f18/issues/990

Original-commit: flang-compiler/f18@d971333025
Reviewed-on: https://github.com/flang-compiler/f18/pull/1010
2020-03-05 08:06:58 -08:00
Steve Scalpone a705a4a314 [flang] Change README to refer to LLVM_BUILD_DIR. (flang-compiler/f18#1033)
* Change README to refer to LLVM_BUILD_DIR.

LLVM_INSTALL_TOOLS doesn't to install llvm-lit. However pointing to the cmake file in the build directory works fine, and lit and FileCheck will be picked up correctly this way.

Original-commit: flang-compiler/f18@3cbe344f82
Reviewed-on: https://github.com/flang-compiler/f18/pull/1033
2020-03-05 07:12:06 -08:00
Steve Scalpone 61106305b6 [flang] Use a file descriptor in Temp struct (flang-compiler/f18#1036)
The struct Temp is used in the function call createUniqueFile
which only takes in a file descriptor instead of a file handler.
In Unix these are the same thing, but in Windows they are different.
Therefore, the type of the member of struct Temp is changed
from file handler to file descriptor and when closing the file
the file descriptor is converted to a file handler.

Original-commit: flang-compiler/f18@a8edb328f7
Reviewed-on: https://github.com/flang-compiler/f18/pull/1036
2020-03-05 07:09:29 -08:00
Steve Scalpone e8f09da68d [flang] Use std::mutex instead of pthreads (flang-compiler/f18#1006)
* Use std::mutex for portability.

Original-commit: flang-compiler/f18@a9a725eb9d
Reviewed-on: https://github.com/flang-compiler/f18/pull/1006
2020-03-05 06:52:35 -08:00
Steve Scalpone 5dfd2b06d4 [flang] Add missing include <algorithm> for std::max (flang-compiler/f18#1028)
Original-commit: flang-compiler/f18@0e32eebf7f
Reviewed-on: https://github.com/flang-compiler/f18/pull/1028
2020-03-05 06:31:24 -08:00
Steve Scalpone e94ee41ec2 [flang] Don't link to libm (flang-compiler/f18#1038)
* Don't link to libm on windows

* Don't link to libm in Unix as well

Original-commit: flang-compiler/f18@a807862ab8
Reviewed-on: https://github.com/flang-compiler/f18/pull/1038
2020-03-05 05:40:44 -08:00
David Truby d545a132bc [flang] Link against zlib when LLVM does.
Original-commit: flang-compiler/f18@2260abe4c2
Reviewed-on: https://github.com/flang-compiler/f18/pull/1043
2020-03-02 14:19:10 +00:00
Tim Keith 47452b9691 [flang] Improve checking of structure constructor arguments
When a misparsed FunctionReference was converted to a StructureConstructor,
the components accessed were not checked for accessibility.

The conversion happens in expression analysis so that where the accessibity
must be checked. So move `CheckAccessibleComponent` to `tools.h` so that it
can be shared by `resolve-names.cpp` and `expression.cpp`.

Add FindModuleContaining to help implement this and use it other places.

Check that an access-spec can only appear in a module.

Remove some unnecessary "semantics::" qualifiers.

Original-commit: flang-compiler/f18@99ce156e49
Reviewed-on: https://github.com/flang-compiler/f18/pull/1046
2020-03-03 13:24:09 -08:00
Tim Keith 3495c78214 [flang] Improve array element errors
When something is parsed as an array element it was sometimes intended
to be a function call or structure constructor. So if the base name is
not found the errors can be confusing. This is an attempt to improve
them.

When the subscript list is empty, it was probably meant to be a function
call, so report that the name is not a function.

If the base is a scalar but there are subscripts, report that it is not
an array.

Original-commit: flang-compiler/f18@e2fd5333ff
Reviewed-on: https://github.com/flang-compiler/f18/pull/1039
2020-03-02 16:45:02 -08:00
Tim Keith 2a00c617d6 [flang] Expression analysis on DataStmtConstant
Data statements contains expressions but they are not wrapped in one of
the kinds of parse tree nodes that are analyzed, like `parser::Expr`.
So potential errors were not discovered.

Change `ExprChecker` to handle `DataStmtConstant` and analyze any
expressions that are contained in it. Note that the analyzed form of
the expression is not yet saved in the parse tree.

Original-commit: flang-compiler/f18@8bdaf0a521
Reviewed-on: https://github.com/flang-compiler/f18/pull/1044
2020-03-02 07:59:29 -08:00
Varun Jayathirtha 92c1f6bb98 [flang] Add semantic checks C8104, C8105. Add tests for C8103, C8104, C8105
Original-commit: flang-compiler/f18@8134fc477e
Reviewed-on: https://github.com/flang-compiler/f18/pull/1037
2020-02-27 15:55:46 -08:00
Pete Steinfeld 84b2909ded [flang] Responses to pull request comments
I cleaned up some code and reverted a change to semantic checking for
the exponent letter in REAL literals.

Original-commit: flang-compiler/f18@e81f57fcf5
Reviewed-on: https://github.com/flang-compiler/f18/pull/1031
2020-02-27 08:49:40 -08:00
Pete Steinfeld 657aaf8b8d [flang] Semantic checks for C712 through C727
I've updated the compiler and test source with references to the contraints at
the points where they were enforced and tested.  Many of these were already
implemented and required no code change.  A few constraint checks were both
implemented and tested, and I only added references to the constraint
numbers in the compiler source and tests.  Here are the things I had to
implement:

Constraint C716 states that, in a REAL constant, if both a kind-param and an
exponent letter appear, the exponent letter must be 'E'.

Constraints C715 and C719 require that a KIND value be actually implemented.

Constraint C722 requires that functions that return assumed-length character
types are external.

Constraint C726 disallows assumed lenght charater types for dummy arguments and
return types.

Original-commit: flang-compiler/f18@45998741e5
Reviewed-on: https://github.com/flang-compiler/f18/pull/1031
Tree-same-pre-rewrite: false
2020-02-26 20:19:48 -08:00
Tim Keith 914a91c1c3 [flang] Fix misparsed structure constructor in data stmt
In a data statement like `data x / a(1) /`, `a(1)` may be an array
element or a structure constructor. It is parsed as an array element
so if it turns out `a` is a derived type it must be rewritten as a
strucutre constructor.

Original-commit: flang-compiler/f18@a2b2a330e7
Reviewed-on: https://github.com/flang-compiler/f18/pull/1024
2020-02-25 17:13:56 -08:00
Tim Keith c875618506 [flang] Remove use of std::set::merge
Some versions of clang that we are building with don't have
std::set::merge, even though it is part of C++17. Work around
that by using std::set::insert until we can count on merge being
available everywhere.

Original-commit: flang-compiler/f18@886ccc37fb
Reviewed-on: https://github.com/flang-compiler/f18/pull/1014
2020-02-26 16:10:11 -08:00
Peter Waller 42cc44fbc8 [flang] Add script to flatten git history for llvm monorepo submission (flang-compiler/f18#854)
This script, when run on a checkout of the f18 repository, takes the
current origin/master and makes a branch called "new" with a rewritten
history;

The "new" branch has a flat git history (that is, a series of commits
with only one parent). Flattening is done for merge commits by taking
the content of the commit as it is at the merge commit.

Original-commit: flang-compiler/f18@d9871fa9eb
Reviewed-on: https://github.com/flang-compiler/f18/pull/854
2020-02-26 11:50:43 -08:00
peter klausler b7a5b5c7b6 [flang] Fix layout of 128-bit IEEE-754 floating-point values
Original-commit: flang-compiler/f18@c95c45704e
Reviewed-on: https://github.com/flang-compiler/f18/pull/1021
2020-02-26 08:23:44 -08:00
Jean Perier 13c7778df9 [flang] Remove clang from LLVM drone builds until needed to fasten builds
Original-commit: flang-compiler/f18@5eaebc800c
Reviewed-on: https://github.com/flang-compiler/f18/pull/1026
2020-02-26 06:16:22 -08:00
Jean Perier c3ce28b8b4 [flang] Fix drone CI build failure due to lack of FileCheck
Simply use the llvm build directory and save installing LLVM on the way.

Original-commit: flang-compiler/f18@7848ab146a
Reviewed-on: https://github.com/flang-compiler/f18/pull/1026
Tree-same-pre-rewrite: false
2020-02-26 03:49:42 -08:00
Tim Keith de066a2756 [flang] Allow for access-stmt before namelist-stmt
You can declare a name in an access statement and then declare it as
a namelist group name. We weren't allowing that because we didn't
convert a symbol with UnknownDetails to one with NamelistDetails.

Fixes flang-compiler/f18#1022.

Original-commit: flang-compiler/f18@a759204db5
Reviewed-on: https://github.com/flang-compiler/f18/pull/1023
2020-02-25 15:22:13 -08:00
David Truby 0855c45400 [flang] Replace module writer posix file handling with llvm file handling. (flang-compiler/f18#993)
NOTE: This commit introduces a dependency on LLVM HEAD

Original-commit: flang-compiler/f18@97efc0194d
Reviewed-on: https://github.com/flang-compiler/f18/pull/993
2020-02-25 07:59:50 -08:00
CarolineConcatto 64ab3302d5 [flang] [LLVMify F18] Compiler module folders should have capitalised names (flang-compiler/f18#980)
This patch renames the modules in f18 to use a capital letter in the
module name

Signed-off-by: Caroline Concatto <caroline.concatto@arm.com>

Original-commit: flang-compiler/f18@d2eb7a1c44
Reviewed-on: https://github.com/flang-compiler/f18/pull/980
2020-02-25 07:11:52 -08:00
Tim Keith 6374eea9cf [flang] Temporarily disable part of data01 test
`data x /a(1)/` is ambiguous. The data value may be an array element
or a structure constructor. We need to parse it as one of these and
then fix up the parse tree when it should have been the other one.

My PR 1012 changed the parser to identify this as an array element.
That makes this test invalid until we have the right parse tree fixup,
so I am disabling it for now.

Original-commit: flang-compiler/f18@72aa278f03
Reviewed-on: https://github.com/flang-compiler/f18/pull/1013
2020-02-21 16:25:10 -08:00
Tim Keith e0ba2b8783 [flang] Add more checks on WHERE and FORALL
Check that masks and LHS of assignments in WHERE statements and
constructs have consistent shapes. They must all have the same rank and
any extents that are compile-time constants must match.

Emit a warning for assignments in FORALL statements and constructs where
the LHS does not reference each of the index variables.

Original-commit: flang-compiler/f18@8b04dbebcf
Reviewed-on: https://github.com/flang-compiler/f18/pull/1009
2020-02-21 15:47:01 -08:00
Tim Keith 28d8a67d43 [flang] Fix parsing bug on DATA statement
This DATA statement was getting a parsing error:
`data x /a(i)%b/`

The parser was expecting the ending '/' where the '%' was. The problem
was parsing `a(i)` as a structure constructor. Instead, move the
constant subobject case before structure constructor, but match it only
if not followed by '('. That is because in `data x /a(1)(2)/`, `a(1)` is
a valid structure constructor.

Also, remove the NamedConstant alternative from DataStmtRepeat. A named
constant is always parsed as a ConstantSubobject so it can never occur.

Original-commit: flang-compiler/f18@04a76b2726
Reviewed-on: https://github.com/flang-compiler/f18/pull/1012
2020-02-21 15:31:12 -08:00
Anchu Rajendran S df1b4b144e [flang] Issue flang-compiler/f18#992 : Implementing Semantic checks for DATA Statement (C874-C887) (flang-compiler/f18#992)
This commit covers Semantic Constraints C882 - C887

C882 : It was partially Implemented. Finished the implementation
and added test case
C884 : Implemented and added test case
C883 : Implementation was there already. Added test case
C885, C886, C887 : Implementation was there already. Added test case for
data-repeat.

Original-commit: flang-compiler/f18@822129736b
Reviewed-on: https://github.com/flang-compiler/f18/pull/992
2020-02-20 22:19:14 -08:00
Isuru Fernando ca861fd494 [flang] Add missing array include (flang-compiler/f18#1004)
Original-commit: flang-compiler/f18@de801a0db7
Reviewed-on: https://github.com/flang-compiler/f18/pull/1004
2020-02-20 13:12:48 -08:00
Isuru Fernando 256b53688e [flang] Disable 80-bit extended precision if on MSVC (flang-compiler/f18#1003)
Original-commit: flang-compiler/f18@2c1fc63758
Reviewed-on: https://github.com/flang-compiler/f18/pull/1003
2020-02-20 11:33:43 -08:00
Tim Keith aafc1578ae [flang] Rename DoChecker to DoForallChecker
This reflects the fact that it now performs checks on both DO
and FORALL constructs. Rename the source files as well.

Original-commit: flang-compiler/f18@8ecb6a279f
Reviewed-on: https://github.com/flang-compiler/f18/pull/989
2020-02-19 13:28:19 -08:00
Tim Keith ee7cc4764f [flang] Add FORALL checking to DoChecker
FORALL statements and constructs require a lot of the same checking
as DO CONCURRENT, so do the checks in DoChecker so that code can be
shared where possible. This requires some reorganization there.
Remove code from AssignmentChecker that did some of these checks.

Change names that contain `DoVar` or `DoVariable` to `IndexVar` to
reflect the fact that they may be DO or FORALL index variables.
Distinguish between the two when necessary with enum `IndexVarKind`.

Change some messages that referred to "concurrent-header" or
"concurrent-control" to specifically say "DO CONCURRENT" or "FORALL".

Original-commit: flang-compiler/f18@84752c492e
Reviewed-on: https://github.com/flang-compiler/f18/pull/989
Tree-same-pre-rewrite: false
2020-02-18 17:14:24 -08:00
Tim Keith 88aa96ffe9 [flang] Reorganize evaluate::Assignment
Every analyzed assignment represented by `evaluate::Assignment` has
a LHS and RHS expression. These need to be checked uniformly in various
places. So change Assignment always to have those data members, with
the variant determining which kinds of assignment it is: intrinsic,
user-defined, or pointer.

Original-commit: flang-compiler/f18@fb87d16a86
Reviewed-on: https://github.com/flang-compiler/f18/pull/989
Tree-same-pre-rewrite: false
2020-02-18 15:20:28 -08:00
Pete Steinfeld 4d0c8522e3 [flang] Semantic checks for C709, C710, and C711
C709 An assumed-type entity shall be a dummy data object that does not
have the ALLOCATABLE, CODIMENSION, INTENT (OUT), POINTER, or VALUE
attribute and is not an explicit-shape array.

C710 An assumed-type variable name shall not appear in a designator or
expression except as an actual argument corresponding to a dummy
argument that is assumed-type, or as the first argument to the intrinsic
function IS_CONTIGUOUS, LBOUND, PRESENT, RANK, SHAPE, SIZE, or UBOUND,
or the function C_LOC from the intrinsic module ISO_C_BINDING.

C711 An assumed-type actual argument that corresponds to an assumed-rank
dummy argument shall be assumed-shape or assumed-rank.

For C709 I added code to check-declarations.cpp.  For this, I had to
distinguish between polymorphic types and assumed-type types to
eliminate multiple messages on the same line.

C710 was already checked, but I added a notation in the source.

For C711 I added code to check-call.cpp and the test call15.f90.

Original-commit: flang-compiler/f18@4a703f2b5a
Reviewed-on: https://github.com/flang-compiler/f18/pull/985
2020-02-19 11:58:29 -08:00
Jean Perier 24b9ef8727 [flang] Fix issues with -DBUILD_SHARED_LIBS=On
This re-ordering allows building f18 with shared library using and LLVM build
with static libraries.

This reordering (that also made sens form an alphabetical point of view)
works here to do such "shared+archive" compiling because the current
dependency on LLVM is simple (only one f18 lib + an executable depends on LLVM).
As soon as two f18 libraries will depend on LLVM, one will have to use an LLVM
version built with -DBUILD_SHARED_LIBS=On if one wants to use this option
to compile f18.

Original-commit: flang-compiler/f18@bbbbe9c1aa
Reviewed-on: https://github.com/flang-compiler/f18/pull/994
2020-02-19 05:25:35 -08:00
Jinxin (Brian) Yang aa9fc5bddc [flang] [OpenMP] Predetermined rule for sequential loop index (flang-compiler/f18#976)
This commit implements rule:
A loop iteration variable for a sequential loop in a parallel or
task generating construct is private in the innermost such construct
that encloses the loop.

A Simple example:
```
  i = -1                    <== Scope 0
  j = -1
  !$omp parallel            <== Scope 1
  print *,i,j      <-- both are shared (Scope 0)
  !$omp parallel            <== Scope 2
  print *,i,j      <-- a) i is shared (Scope 0), j is private (Scope 2)
  !$omp do                  <== Scope 3
  do i=1, 10       <-- i is private (Scope 3)
     do j=1, 10    <-- b) j is private (Scope 2, not 3!)
     enddo
  enddo
  print *,i,j      <-- c) i is shared (Scope 0), j is private (Scope 2)
  !$omp end parallel
  print *,i,j      <-- both are shared (Scope 0)
  !$omp end parallel
  print *,i,j      <-- both are shared (Scope 0)
end
```

Ideally the above rule solves a), b), and c) but a) is left as a TODO
because it is better to handle the data-sharing attribute conflicts
along with the rules for "Predetermined DSA on Clauses".

The basic idea is when visiting the `DoConstruct` node within an OpenMP
construct, if the do-loop is not associated (like `i` loop is associated
with `!$omp do`) AND the do-loop is in the parallel/task generating
construct, resolve the loop index to be private to that innermost construct.

In the above example, `j` loop is not associated (then it is sequential) and
the innermost parallel/task generating construct that encloses the `j` loop
is the `parallel` construct marked with `<== Scope 2`, so `j` is private
to that construct. To do that, I also need to change the prototype of those
`ResolveOmp*` functions to allow specifiying the `scope` because the new
symbol for `j` should be created in Scope 2 and all the `symbol` field of
`Name j` in that `parallel` construct should be fixed, such as c).

Original-commit: flang-compiler/f18@69a845283b
Reviewed-on: https://github.com/flang-compiler/f18/pull/976
2020-02-18 16:27:43 -08:00
Jean Perier 3364086795 [flang] Add Pre-FIR Tree structure to help lowering the parse-tree
The Pre-FIR Tree structure is a transient data structure that
is meant to be built from the parse tree just before lowering to
FIR and that will be deleted just afterwards. It is not meant to perfrom
optimization analysis and transformations. It only provides temporary
information, such as label target information or parse tree parent nodes,
that is meant to be used to lower the parse tree structure into
FIR operations.
A PFTBuilder class builds the Pre-Fir Tree from the parse-tree.
A pretty printer is available to visualize this data structure.

- Lit tests are added to:
  1. that the PFT tree structure is as expected
  2. that the PFT captures all intented nodes

- Cmake changes: Prevent warnings inisde LLVM headers when compiling flang

The issue is that some LLVM headers  define functions where the usage of
the parameters depend on environment ifdef. See for instance Size in:
5f940220bf/llvm/include/llvm/Support/Compiler.h (L574)

Because flang is build with -Werror and -Wunused-parameter is default in
clang, this may breaks build in some environments (like with clang9 on macos).
A solution would be to add -Wno-unused-parameter to flang CmakLists.txt,
but it is wished to keep this warning on flang sources for quality purposes.
Fixing LLVM headers is not an easy task and `[[maybe_unused]]` is C++17 and
cannot be used yet in LLVM headers.
Hence, this fix simply silence warnings coming from LLVM headers by telling
CMake they are to be considered as if they were system headers.

- drone.io changes: remove llvm 6.0 from clang config in drone.io and link
flang with libstdc++ instead of libc++

llvm-dev resolved to llvm-6.0 in clang builds on drone.io. llvm 6.0 too old.
LLVM packages are linked with libstdc++ standard library whereas libc++ was
used for flang. This caused link time failure when building clang. Change
frone.io to build flang with libc++.

Note:
This commit does not reflect an actual work log, it is a feature based split of the
changes done in the FIR experimental branch. The related work log can be found in the
commits between:
864898cbe509d032abfe1172ec367dbd3dd92bc1
and
137c23da9c64cf90584cf81fd646053a69e91f63

Other changes come from https://github.com/flang-compiler/f18/pull/959 review.

Original-commit: flang-compiler/f18@edb0943bca
Reviewed-on: https://github.com/flang-compiler/f18/pull/959
2020-02-17 02:38:49 -08:00
Jean Perier c52cd6355c [flang] Add clang-format files for FIR source (LLVM style)
Note:
This commit does not reflect an actual work log, it is a feature based split of the
changes done in the FIR experimental branch. The related work log can be found in the commits between:
8c320e3bf2
and:
9b9ea05f9a

Original-commit: flang-compiler/f18@00d8d5121c
Reviewed-on: https://github.com/flang-compiler/f18/pull/959
Tree-same-pre-rewrite: false
2020-02-17 02:37:49 -08:00
Pete Steinfeld 79f38ab4bb [flang] Semantic check for C708
An entity declared with the CLASS keyword shall be a dummy argument or
have the ALLOCATABLE or POINTER attribute.

Implementing this check revealed a problem in the test resolve44.cpp.
It also showed that we were doing semantic checking on the entities
created by the compiler for LOCAL and LOCAL_INIT locality-specs.  So I
changed the creation of symbols associated with LOCAL and LOCAL_INIT
locality-specs to be host associated with the outer symbol rather than
new object entities.  In the process, I also changed things so that the
`parser::Name` associated with the newly created symbols was set to the
symbol rather than being set to nullptr.

Original-commit: flang-compiler/f18@5dd0b0bbe8
Reviewed-on: https://github.com/flang-compiler/f18/pull/981
2020-02-14 08:33:07 -08:00
David Truby d7cee59762 [flang] Add zlib to drone files so that linking LLVM works. (flang-compiler/f18#983)
Original-commit: flang-compiler/f18@403faf847d
Reviewed-on: https://github.com/flang-compiler/f18/pull/983
2020-02-13 20:46:29 -08:00
peter klausler 95696d563b [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@9c4bba11cf
Reviewed-on: https://github.com/flang-compiler/f18/pull/982
2020-02-13 10:31:26 -08:00
Pete Steinfeld 702d3075ac [flang] Semantic checks for constraints on types
I implemented and added tests for constraints C703, C704, C705, C706,
and C796.  In some cases, the code and/or test already existed, and all
I did was add a notation indicating the associated constraint.

Original-commit: flang-compiler/f18@49a64c4c23
Reviewed-on: https://github.com/flang-compiler/f18/pull/978
2020-02-11 11:30:51 -08:00
Pete Steinfeld b9e9b6f84d [flang] Updated the description of `evaluate::Expr` types
Original-commit: flang-compiler/f18@75adddd504
Reviewed-on: https://github.com/flang-compiler/f18/pull/979
2020-02-11 11:03:06 -08:00
Tim Keith 6256fbe200 [flang] Fix compilation error on macOS
The call to `std::min` failed to compile with GCC on macOS due to type
inference because `std::size_t` is `long unsigned int` but `std::int64_t`
is `long long int`.

Original-commit: flang-compiler/f18@c342575a9e
Reviewed-on: https://github.com/flang-compiler/f18/pull/977
2020-02-10 10:55:24 -08:00
Jean Perier 231ff4e6ad [flang] Fix issues comming from clang-10 warnings
- Remove SubprogramDetails copy ctor
- Prevent copies in range based loops over symbols
- Remove unsued var

Original-commit: flang-compiler/f18@16543d22f7
Reviewed-on: https://github.com/flang-compiler/f18/pull/972
2020-02-10 02:33:06 -08:00
Pete Steinfeld 05f44aff45 [flang] Semantic checks for C702
C702 (R701) A colon shall not be used as a type-param-value except in the
declaration of an entity that has the POINTER or ALLOCATABLE attribute.

I added code to the visitor for a TypeDeclarationStmt to check for the
'LEN' type parameter for strings and to loop over the type parameters
for derived types.

I also ran into a few situations where previous tests had erroneously
used a colon for type parameters without either the POINTER or
ALLOCATABLE attribute and fixed them up.

Original-commit: flang-compiler/f18@a1a95bfcd1
Reviewed-on: https://github.com/flang-compiler/f18/pull/973
2020-02-07 10:26:23 -08:00
Jinxin (Brian) Yang f90404e59c [flang] [OpenMP] Predetermined rules for loop index variables (flang-compiler/f18#962)
This refers to three rules in OpenMP 4.5 Spec 2.15.1.1:
  * The loop iteration variable(s) in the associated do-loop(s) of a do,
    parallel do, taskloop, or distribute construct is (are) private.
  * The loop iteration variable in the associated do-loop of a simd
    construct with just one associated do-loop is linear with a linear-step
    that is the increment of the associated do-loop.
  * The loop iteration variables in the associated do-loops of a simd
    construct with multiple associated do-loops are lastprivate.

A simple example:
```
implicit none
  integer :: N = 1024
  integer i, j, k
  !$omp parallel do collapse(3)
  do i=1, N  <- i is private
     do j=1, N  <- j is private
        do k=1, N  <- k is private
        enddo
     enddo
  enddo
end
```

If `collapse` clause is not present, the associated do-loop for construct
`parallel do` is only `i` loop. With `collapse(n)`, `i`, `j`, and `k` are
all associated do-loops and the loop index variables are private to the
OpenMP construct:

```
implicit none
 !DEF: /MainProgram1/n ObjectEntity INTEGER(4)
 integer :: n = 1024
 !DEF: /MainProgram1/i ObjectEntity INTEGER(4)
 !DEF: /MainProgram1/j ObjectEntity INTEGER(4)
 !DEF: /MainProgram1/k ObjectEntity INTEGER(4)
 integer i, j, k
!$omp parallel do  collapse(3)
 !DEF: /MainProgram1/Block1/i (OmpPrivate) HostAssoc INTEGER(4)
 !REF: /MainProgram1/n
 do i=1,n
  !DEF: /MainProgram1/Block1/j (OmpPrivate) HostAssoc INTEGER(4)
  !REF: /MainProgram1/n
  do j=1,n
   !DEF: /MainProgram1/Block1/k (OmpPrivate) HostAssoc INTEGER(4)
   !REF: /MainProgram1/n
   do k=1,n
   end do
  end do
 end do
end program
```

This implementation assumes that the structural checks for do-loops
are done at this point, for example the `n` in `collapse(n)` should
be no more than the number of actual perfectly nested do-loops, etc..

Original-commit: flang-compiler/f18@572a57d3d0
Reviewed-on: https://github.com/flang-compiler/f18/pull/962
2020-02-05 10:13:43 -08:00
Jean Perier a8ef13ea25 [flang] Fix template step limit issue with clang
While working on PR 959, I instanciated a `common::TupleToVariant`
with ~50+ types inside the tuple. Clang would then crash after
1hr compilation with message:
"constexpr evaluation hit maximum step limit; possible infinite loop"
After investigating, it turned out clang handles very badly the way
`common::AreTypesDistinctHelper` was implemented.
Its "number of steps" was exponential with the number of types.
This fix makes this number quadratic which solves the issue.

Original-commit: flang-compiler/f18@4542cb5708
Reviewed-on: https://github.com/flang-compiler/f18/pull/968
2020-02-04 10:30:16 -08:00
peter klausler f7be251804 [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@c3f1774f8e
Reviewed-on: https://github.com/flang-compiler/f18/pull/950
2020-02-04 14:40:05 -08:00
Pete Steinfeld 60cd064058 [flang] Explanation of how to implement a semantic check
This is the story of implementing semantic checks for passing DO
variables to functions with dummy arguments with INTENT(OUT) or
INTENT(INOUT).

Original-commit: flang-compiler/f18@889f90913f
Reviewed-on: https://github.com/flang-compiler/f18/pull/939
2020-02-03 09:27:14 -08:00
Tim Keith f1b61dbd5e [flang] Fix another bug checking simple contiguity
The test still wasn't correct for structure components. If the last
part-ref is a non-array or a single array element, but the whole
ArrayRef has non-zero rank, it is not contiguous. Otherwise, if there
are subscripts on the last part-ref they can be checked normally.

Add some tests for cases that were previously failing, and also for
cases with vector subscripts.

Original-commit: flang-compiler/f18@aa0a088732
Reviewed-on: https://github.com/flang-compiler/f18/pull/961
2020-01-29 16:08:39 -08:00
Pete Steinfeld eaf2288857 [flang] Semantic checks for deallocating entities with IMPURE FINAL procedures
You cannot call an IMPURE procedure in a DO CONCURRENT construct.  One
way that can happen is if an entity with an IMPURE FINAL procedure gets
deallocated.  Similar to the checks for deallocating coarrays, there are
three ways that an entity can get deallocated that are applicable to DO
CONCURRENT constructs -- an actual DEALLOCATE statement, block exit, and
assignment.

This change depends on the utility function `HasImpureFinal()` in tools.h to
determine if an entity has a derived type with an IMPURE FINAL
procedure.  In the course of testing this change, I realized that this
check is incorrect, but the code specific to DO CONCURRENT is
independent of the check, so I might as well implement it.

Original-commit: flang-compiler/f18@d2294ff511
Reviewed-on: https://github.com/flang-compiler/f18/pull/954
2020-01-29 12:42:52 -08:00
Jinxin Yang d8f4d7fcd2 [flang] Remove `default` case for OmpSectionsDirective (only two enum values)
Original-commit: flang-compiler/f18@3f37e0dbaf
Reviewed-on: https://github.com/flang-compiler/f18/pull/960
2020-01-28 13:58:14 -08:00
Jinxin (Brian) Yang 64b7325a2e [flang] [OpenMP] Name Resolution for OpenMP constructs (flang-compiler/f18#940)
This is an extended framework based on the previous work that addresses
the NR on OpenMP directives/clauses (b2ea520). In this change:
  * New `OmpVisitor` is created (ResolveNamesVisitor derives from it) to
    create necessary scopes for certain OpenMP constructs. This is along
    with the regular Fortran NR process.
  * Old `OmpVisitor` is adjusted and converted to a standalone visitor--
    `OmpAttributeVisitor`. This is used to walk through the OpenMP constructs
    and do the NR for variables on the OpenMP directives or data references
    within the OpenMP constructs. "Do the NR" here means that based on the NR
    results of the regular Fortran NR, fix the symbols of `Names` related
    to the OpenMP constructs. Note that there is an `OmpContext` in this
    visitor (similar to the one in `OmpStructureChecker`), this is necessary
    when dealing with the nested OpenMP constructs in the future.

Given an OpenMP code:
```
real*8 a, b
  a = 1.
  b = 2.
  !$omp parallel private(a)
  a = 3.
  b = 4.
  !$omp end parallel
  print *, a, b
end
```

w/o -fopenmp:
```
real*8 a, b
 !REF: /MainProgram1/a
 a = 1.
 !REF: /MainProgram1/b
 b = 2.
 !!!! OMP parallel
 !REF: /MainProgram1/a
 a = 3.
 !REF: /MainProgram1/b
 b = 4.
 !!!! OMP end parallel
 !REF: /MainProgram1/a
 !REF: /MainProgram1/b
 print *, a, b
end
```

w/ -fopenmp:
```
real*8 a, b
 !REF: /MainProgram1/a
 a = 1.
 !REF: /MainProgram1/b
 b = 2.
!$omp parallel  private(a)   <-- new Symbol for 'a' created
 !DEF: /MainProgram1/Block1/a (OmpPrivate) HostAssoc REAL(8)
 a = 3.   <-- fix the old symbol with new Symbol in parallel scope
 !REF: /MainProgram1/b
 b = 4.   <-- do nothing because by default it is shared in this scope
!$omp end parallel
 !REF: /MainProgram1/a
 !REF: /MainProgram1/b
 print *, a, b
end
```

Please note that this is a framework update, there are still many
things on the TODO list for finishing the NR for OpenMP (based on
the `OpenMP-semantics.md` design doc), which will be on top of this
framework.

Some TODO items:
- Create a generic function to go through all the rules for deciding
  `predetermined`, `explicitly determined`, and `implicitly determined`
  data-sharing attributes. (This is the next biggest part)
- Handle `Array Sections` and `Array or Structure Element`.
- Take association into consideration for example Pointer association,
  `ASSOCIATE` construct, and etc.
- Handle all the name resolution for directives/clauses that have
  `parser::Name`.

* N.B. Extend `AddSourceRange` to apply to current and parent scopes
  - motivated by a few cases that need to call `AddSourceRange`
    for current & parent scopes; the extension should be safe
  - global scope is not included

Original-commit: flang-compiler/f18@0c3c39d30e
Reviewed-on: https://github.com/flang-compiler/f18/pull/940
2020-01-28 12:51:35 -08:00
Pete Steinfeld 78807b9880 [flang] More checklist items
I added more items when reviewing some actual pull request comments.

Original-commit: flang-compiler/f18@195d807ff2
Reviewed-on: https://github.com/flang-compiler/f18/pull/956
2020-01-24 12:08:24 -08:00
Alexis Perry 352d347aa5 [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@ae7721e611
Reviewed-on: https://github.com/flang-compiler/f18/pull/958
2020-01-27 18:18:45 -08:00
David Truby 65b62f9bde [flang] Moved public headers to include/flang (flang-compiler/f18#943)
Original-commit: flang-compiler/f18@21adbc7e05
Reviewed-on: https://github.com/flang-compiler/f18/pull/943
2020-01-27 12:57:59 -08:00
Tim Keith ea5b1efd8f [flang] Fix bugs detecting impure calls
Change Traverse to visit the actual arguments of structure constructors.

Change FindImpureCallHelper to visit the actual arguments of a call to a
pure procedure in case one of them makes a call to an impure function.

Original-commit: flang-compiler/f18@81a5488ee6
Reviewed-on: https://github.com/flang-compiler/f18/pull/951
2020-01-25 08:15:17 -08:00
Tim Keith 56634417e7 [flang] Fix bug detecting simply contiguous component
We were always return false when testing a component for simple
contiguity. Change to check that the component is an array that is
simply continguous. Also treat a scalar component of scalar as simply
contiguous.

A pointer with bounds remapping to a complex part is a similar case
so add a test for that too.

Original-commit: flang-compiler/f18@27d76da2a4
Reviewed-on: https://github.com/flang-compiler/f18/pull/952
2020-01-27 11:51:32 -08:00
peter klausler fae12a08bd [flang] Basic file operation wrapper
Asynchronous interfaces and locking

Original-commit: flang-compiler/f18@3ba77a0c20
Reviewed-on: https://github.com/flang-compiler/f18/pull/949
2020-01-27 09:50:25 -08:00
peter klausler 491122d1cd [flang] Drill down to a working implementation of the APIs for an
internal formatted WRITE with no data list items.

Improve argument names in io-api.h

Bump up error number to not conflict with errno values

Use Fortran::runtime::io namespace

Add wrapper around malloc/free, allow use of unique_ptr with wrapper

IoErrorHandler

Revamp FormatContext, use virtual member functions

Update comment syntax, allow for old C

12HHELLO, WORLD

Remove files not yet ready for review

Use std::forward

Fix gcc build warnings

Fix redundant filename in license boilerplate

Reduce runtime dependence on compiler binary libraries, fixing shared lib builds

Original-commit: flang-compiler/f18@839a91f1d6
Reviewed-on: https://github.com/flang-compiler/f18/pull/946
2020-01-24 12:33:47 -08:00
Tim Keith d1337ba3ee [flang] Check bounds on pointer assignment
Perform checks on bounds-spec and bounds-remapping in a pointer
assignment statement:
- check that the rank of the bounds specified matches the rank of the
  pointer
- for bounds-spec, check that the pointer rank matches the target rank
- for bounds-remapping:
  - check that the target is rank 1 or simply contiguous
  - check that there are sufficient elements on the RHS for the bounds
    specified, when it can be determined at compile time

Move more of the pointer-specific checking from `assignment.cc`
to `pointer-assignment.cc`.

Original-commit: flang-compiler/f18@7489b35392
Reviewed-on: https://github.com/flang-compiler/f18/pull/944
2020-01-22 13:50:02 -08:00
Tim Keith d4a1bd7c9a [flang] Refactor Analyze(PointerAssignmentStmt)
Use early returns to reduce the indentation.
Check LHS is a pointer as early as possible.
A PointerAssignmentStmt can only have a typedAssignment that
represents a PointerAssignment. So assert that is the case and
don't worry about the other cases.

Original-commit: flang-compiler/f18@bdf3d3a292
Reviewed-on: https://github.com/flang-compiler/f18/pull/944
Tree-same-pre-rewrite: false
2020-01-22 13:50:02 -08:00
Tim Keith 0ac2761f2c [flang] Make GenericAssignmentWrapper more like GenericExprWrapper
Have it wrap an optional Assignment so that we can distinguish between
unanalyzed and analyzed with error.

Change analysis of PointerAssignmentStmt to proceed with bounds even
if the DataRef or Expr has an error. Otherwise any bounds expressions
won't be analyzed in that case.

In GetExpr() and GetAssignment() if we get an internal error due to an
unanalyzed expression, dump the parse tree for the expression so we have
some context for the error. They should only be called after the
expression analysis phase. At that point, every expression and assignment
should be analyzed, though some may have resulted in errors(indicated by
returning `nullptr`).

Original-commit: flang-compiler/f18@3b865d7703
Reviewed-on: https://github.com/flang-compiler/f18/pull/944
Tree-same-pre-rewrite: false
2020-01-22 13:50:02 -08:00
Tim Keith 8ad8bfb2a8 [flang] Add `std::string ExpressionBase::AsFortran()`
This is easier to use when including an expression in an error message
and also useful when debugging for dumping expressions.

Fix up several places that no longer need to use a temporary
std::stringstream.

Also change some references to `operator<<` in `formatting.cc` and
`symbol.cc` that became ambiguous with this change.

Original-commit: flang-compiler/f18@25dc49b6e9
Reviewed-on: https://github.com/flang-compiler/f18/pull/944
Tree-same-pre-rewrite: false
2020-01-22 13:50:02 -08:00
Pete Steinfeld fa10045bd7 [flang] Checklist to precede pull requests
I added a checklist to the C++ Style document for things to check before
submitting a pull request or when responding to a request for comments
on a pull request.

Original-commit: flang-compiler/f18@903420268a
Reviewed-on: https://github.com/flang-compiler/f18/pull/936
2020-01-22 09:34:02 -08:00
peter klausler ee60c9a553 [flang] Fix shape analysis of RHS designators of pointer assignments
Original-commit: flang-compiler/f18@bf26a36ef4
Reviewed-on: https://github.com/flang-compiler/f18/pull/938
2020-01-15 15:14:20 -08:00
Tim Keith 628a359071 [flang] Fix checking of pointer target with association
When checking if the target of a pointer assignment is valid, we
weren't following associations. E.g. we complained about the assignment
below if `b` had the TARGET attribute but `c` did not:
```
associate(a => b%c)
  p => a
end associate
```

The fix is to change `GetSymbolVector()` to follow associations in
creating the chain of symbols from a designator.

Add tests for this, and also some other cases where TARGET is on the
derived type variable rather than the component (which worked but didn't
have tests).

Original-commit: flang-compiler/f18@c81c6baedd
Reviewed-on: https://github.com/flang-compiler/f18/pull/937
2020-01-15 13:43:05 -08:00
peter klausler c3df14c30a [flang] begin processing format strings
Move RoundingMode to Fortran.h

Always skip blanks outside character literals & Hollerith

Templatize

optimize repeat counts somewhat

Fix license punctuation, remove patch

Original-commit: flang-compiler/f18@4a0d39b039
Reviewed-on: https://github.com/flang-compiler/f18/pull/927
2020-01-15 11:27:55 -08:00
peter klausler 68f021b8ac [flang] Comments
Original-commit: flang-compiler/f18@0c12188e84
Reviewed-on: https://github.com/flang-compiler/f18/pull/926
2020-01-14 16:16:32 -08:00
peter klausler 210992e526 [flang] Better EQUIVALENCE handling
Original-commit: flang-compiler/f18@7c55097e81
Reviewed-on: https://github.com/flang-compiler/f18/pull/926
Tree-same-pre-rewrite: false
2020-01-14 15:59:29 -08:00
peter klausler a3f4eedea7 [flang] Better fix; clean up redundant utilities
Original-commit: flang-compiler/f18@531db49321
Reviewed-on: https://github.com/flang-compiler/f18/pull/926
Tree-same-pre-rewrite: false
2020-01-14 15:08:37 -08:00
peter klausler 294cae1bcd [flang] Fix unrelated build error found in testing
Original-commit: flang-compiler/f18@5a00d77827
Reviewed-on: https://github.com/flang-compiler/f18/pull/926
Tree-same-pre-rewrite: false
2020-01-14 14:19:42 -08:00
peter klausler 26481ef2bb [flang] Update a test
Original-commit: flang-compiler/f18@5f32183eed
Reviewed-on: https://github.com/flang-compiler/f18/pull/926
Tree-same-pre-rewrite: false
2020-01-14 11:38:09 -08:00
peter klausler c1a710d772 [flang] Address review comments
Original-commit: flang-compiler/f18@d179c796bd
Reviewed-on: https://github.com/flang-compiler/f18/pull/926
Tree-same-pre-rewrite: false
2020-01-14 11:24:49 -08:00
peter klausler b07a4b2474 [flang] Better check for variables in DATA
Original-commit: flang-compiler/f18@92e20baaa8
Reviewed-on: https://github.com/flang-compiler/f18/pull/926
Tree-same-pre-rewrite: false
2020-01-14 11:11:15 -08:00
peter klausler 7010fff8de [flang] Fix bug
Original-commit: flang-compiler/f18@662b8139b5
Reviewed-on: https://github.com/flang-compiler/f18/pull/926
Tree-same-pre-rewrite: false
2020-01-13 15:39:18 -08:00
peter klausler c2bdc144c5 [flang] More comments addressed
Original-commit: flang-compiler/f18@9c863a572b
Reviewed-on: https://github.com/flang-compiler/f18/pull/926
Tree-same-pre-rewrite: false
2020-01-13 15:13:09 -08:00
peter klausler efa2ec7670 [flang] Address review comments
Original-commit: flang-compiler/f18@59e5565cb8
Reviewed-on: https://github.com/flang-compiler/f18/pull/926
Tree-same-pre-rewrite: false
2020-01-13 14:30:31 -08:00
peter klausler 15c89acb18 [flang] BLOCK DATA
add test

Original-commit: flang-compiler/f18@91c084b698
Reviewed-on: https://github.com/flang-compiler/f18/pull/926
Tree-same-pre-rewrite: false
2020-01-13 12:23:14 -08:00
Tim Keith cb37808058 [flang] Pointer assignment semantic checks
Call `CheckPointerAssignment()` when analyzing a pointer assignment
statement. NOTE: the cases with bounds-spec and bounds-remapping are
still to be done.

Perform checks on pointer symbols in `check-declarations.cc`.

Check for pointer to generic intrinsic in `semantics/expression.cc`.

Add the other required pointer assignment checks to `pointer-assignment.cc`.

Original-commit: flang-compiler/f18@3dc5fd6d9e
Reviewed-on: https://github.com/flang-compiler/f18/pull/928
2020-01-14 13:02:56 -08:00
Tim Keith cfedf1dac9 [flang] C1027: procedure pointer may not be coindexed object
Original-commit: flang-compiler/f18@4261daf352
Reviewed-on: https://github.com/flang-compiler/f18/pull/928
Tree-same-pre-rewrite: false
2020-01-14 13:02:56 -08:00
Tim Keith a5db74b614 [flang] Add IntrinsicProcTable::IsSpecificIntrinsicFunction
This replaces IsUnrestrictedSpecificIntrinsicFunction and returns
information that allows the caller to distinguish between restricted
and unrestricted intrinsics.

The new case in `resolve46.f90` used to get an internal error.

Original-commit: flang-compiler/f18@4cb1ee10b9
Reviewed-on: https://github.com/flang-compiler/f18/pull/928
Tree-same-pre-rewrite: false
2020-01-14 13:02:56 -08:00
Tim Keith 355ab9bb82 [flang] Make Fortran form of intrinsic types uppercase
`DynamicType::AsFortran` was using mixed case for intrinic type names.
Make it upper case for consistency with TYPE(...) and CHARACTER when a
length is present and other error messages.

Original-commit: flang-compiler/f18@e16909d67f
Reviewed-on: https://github.com/flang-compiler/f18/pull/928
Tree-same-pre-rewrite: false
2020-01-14 13:02:56 -08:00
Tim Keith c42a22091f [flang] Move pointer assignment checking to its own file
Create `pointer-assignment.{h,cc}` for pointer assignment checking.
It doesn't share with assignment checking so it should be its own file.
Move the code into semantics namespace.

Original-commit: flang-compiler/f18@1658aba81f
Reviewed-on: https://github.com/flang-compiler/f18/pull/928
Tree-same-pre-rewrite: false
2020-01-14 13:02:56 -08:00
Tim Keith ce3d838bc6 [flang] Clean up AssignmentContext
Eliminate `at_` and use location from `SemanticsContext` instead.

Add and use Analyze functions for `std::optional` and `std::list`.

Original-commit: flang-compiler/f18@e171029ccd
Reviewed-on: https://github.com/flang-compiler/f18/pull/928
Tree-same-pre-rewrite: false
2020-01-14 13:02:55 -08:00
Tim Keith 889c81eae7 [flang] Move checks for valid array-spec to check-declarations.cc
At the time we finish processing an array-spec in `resolve-names.cc`,
we don't know if the entity is going to be declared ALLOCATABLE later
so we can't check for validity there. In the new test in `resolve58.f90`
(based on issue flang-compiler/f18#930) we were reporting an error on `b` and not on `a`
when it should be the reverse.

The fix is to move array-spec checking to `check-declarations.cc`,
after name resolution is complete.

Fixes flang-compiler/f18#930.

Original-commit: flang-compiler/f18@c596d2fef7
Reviewed-on: https://github.com/flang-compiler/f18/pull/933
2020-01-14 12:06:52 -08:00
peter klausler 1fe6297cab [flang] Fix bug flang-compiler/f18#931: spurious error reported on CSHIFT
Original-commit: flang-compiler/f18@bd9bd78865
Reviewed-on: https://github.com/flang-compiler/f18/pull/932
2020-01-14 10:53:36 -08:00
CarolineConcatto 0d9dd49ed4 [flang] Regression tests configuration for f18 repository (flang-compiler/f18#861)
The configuration for the tests are in lit.* files.
The lit tests rely on the presence of llvm-lit,FileCheck, not and  count.
When building LLVM add:
-DLLVM_INSTALL_UTILS=On at the cmake command.
LLVM_LIT is found by setting LLVM_EXTERNAL_LIT in f18 CMakeLists.txt.

This patch:
  * Uses LLVM_EXTERNAL_LIT
  * Adds regression tests configurations
  * Adds a proof of concept regression test

The regression test needs to have the Utils build in LLVM.
This is done by adding:
  -DLLVM_INSTALL_UTILS=On
to the LLVM build cmake.

Signed-off-by: Caroline Concatto <caroline.concatto@arm.com>

Original-commit: flang-compiler/f18@a58c6067a1
Reviewed-on: https://github.com/flang-compiler/f18/pull/861
2020-01-14 08:20:49 -08:00
David Truby 05bdb54a49 [flang] Outline operator<< for CharBlock. (flang-compiler/f18#916)
This fixes an issue where the Dump function definitions in dump.cc
were relying on the forward declaration of operator<< for CharBlock
which was marked inline and only present in char-block.h.

This is not allowed under section 6.2.10 of the C++17 standard, and
caused a compilation failure when building with clang 9 as this was
inlining every use of the function and therefore not generating an
outlined definition for linking.

Original-commit: flang-compiler/f18@3ad75d123b
Reviewed-on: https://github.com/flang-compiler/f18/pull/916
2020-01-13 22:08:56 -08:00
Pete Steinfeld 5f7a9504ae [flang] Removed an unnecessary check after Tim fixed issue flang-compiler/f18#915.
Original-commit: flang-compiler/f18@348b04bc1c
Reviewed-on: https://github.com/flang-compiler/f18/pull/924
2020-01-12 08:31:54 -08:00
Pete Steinfeld ec45bc26d3 [flang] Checks for DO variables passed to INTENT(OUT) dummies in functions
I added a traveral framework to find actual arguments in expressions.
For arguments that are DO variables being passed to dummy arguments with
INTENT(OUT), I emit an error message.  For INTENT(INOUT), I emit a
warning.

Original-commit: flang-compiler/f18@815dbed75c
Reviewed-on: https://github.com/flang-compiler/f18/pull/918
2020-01-10 15:08:54 -08:00
Tim Keith 1243a0d175 [flang] Detect incorrect use of assumed-type dummy arguments
Assumed-type dummy arguments can only be used as actual arguments. If
they are used in other contexts it is an error. Change argument analysis
to handle these differently depending on the context. `allowAssumedType`
is set when the argument can be assumed-type. These expressions now all
get `typedExpr` set to `nullopt`.

Change `AnalyzeSectionSubscripts` to analyze all of the subscripts
even if one has an error. This ensures they all get analyzed expressions
(or `nullopt` in case of error).

Fix a bug analyzing `BoundsRemapping`: the lower bound was analyzed
twice and the upper bound not at all.

These change mean that `typedExpr` is set in all known cases.
Fixes flang-compiler/f18#915.

Original-commit: flang-compiler/f18@679ef69905
Reviewed-on: https://github.com/flang-compiler/f18/pull/923
2020-01-10 14:51:40 -08:00
Gary Klimowicz cea1040d51 [flang] Minor format change to LLVM license lines
Replace comment lines containing all dashes with the
proper ===-----....----=== markers.

Original-commit: flang-compiler/f18@a8936b0d41
Reviewed-on: https://github.com/flang-compiler/f18/pull/922
2020-01-10 12:12:03 -08:00
peter klausler 9e6d1a7892 [flang] Dodge build problem in some Power environments
Original-commit: flang-compiler/f18@f24abf19c4
Reviewed-on: https://github.com/flang-compiler/f18/pull/919
2020-01-09 14:01:40 -08:00
peter klausler aeb07fbea6 [flang] Runtime starting and stopping
Define ImageTerminator as a mixin-able class

Turn start.cc into main.cc

Original-commit: flang-compiler/f18@cbc6225213
Reviewed-on: https://github.com/flang-compiler/f18/pull/914
2020-01-09 10:01:59 -08:00
peter klausler e6ab4a7869 [flang] Address complaints in bug flang-compiler/f18#912
Original-commit: flang-compiler/f18@829f5647d6
Reviewed-on: https://github.com/flang-compiler/f18/pull/917
2020-01-09 09:39:09 -08:00
peter klausler d267f20a07 [flang] Fold TRIM
Accept IS_CONTIGUOUS and fold it

test folding is_contiguous

Original-commit: flang-compiler/f18@c75a0791b1
Reviewed-on: https://github.com/flang-compiler/f18/pull/911
2020-01-08 08:44:30 -08:00
peter klausler 91a2f0c75c [flang] Implement folding of INDEX, SCAN, & VERIFY
Fold LEN_TRIM

Fold REPEAT

Fix gcc build warning

Fix two tests that had illegal pointers to coarrays

Original-commit: flang-compiler/f18@36769996fa
Reviewed-on: https://github.com/flang-compiler/f18/pull/910
2020-01-07 13:06:08 -08:00
peter klausler 01c3e4c9f0 [flang] enable semantic analysis by default
back out -Mnolargearray default temporarily

Fix C_F_POINTER(SHAPE=) argument check, it can be any kind of integer

Revert default result kind of SIZE() & al. to standard by default

Remove needless usage of -fdebug-semantics

Original-commit: flang-compiler/f18@57058a5b16
Reviewed-on: https://github.com/flang-compiler/f18/pull/907
2020-01-07 10:24:33 -08:00
Kiran Chandramohan 582b932542 [flang] Semantic checks for critical construct
The commit includes the following,
-> The name field in DoConcurrent*Enforce classes are not used anymore.
Removing the field and its collection and retrieval from
DoConcurrentBodyEnforce and its usage in DoConcurrentLabelEnforce.
-> DoConcurrentLabelEnforce is useful for checking that there
are no branches escaping from other constructs also. For enabling
use in other constructs (like critical) moving this to tools.h
and renaming it as LabelEnforce.
-> Checks for the constraints.
-> Tests for the constaints.

Original-commit: flang-compiler/f18@4b7a007ff3
Reviewed-on: https://github.com/flang-compiler/f18/pull/897
2020-01-04 15:13:28 +00:00
peter klausler cc179ba749 [flang] Fold FLOOR, CEILING, NINT, and ANINT
Add GetUltimate() to ResolveAssociations(), fixing a UBOUND test case with use association

Fix folding of array-valued subscripts while I am in here

Original-commit: flang-compiler/f18@f663d4fef4
Reviewed-on: https://github.com/flang-compiler/f18/pull/905
2020-01-03 16:12:06 -08:00
peter klausler 39114d503a [flang] Another attempt to fix bug flang-compiler/f18#877
Original-commit: flang-compiler/f18@2ad2330cda
Reviewed-on: https://github.com/flang-compiler/f18/pull/906
2020-01-03 15:08:37 -08:00
Tim Keith d42aaa81f2 [flang] Add analyzed form of pointer assignment
Add `typedAssignment` to `PointerAssignmentStmt` parse tree node and
extend `evaluate::Assignment` to include pointer assignment, including
analyzed bounds. Analyze pointer assignments and fill those in.
Emit them in unparsed output and parse tree dump when present.

Change assignment checking to use analyzed expressions and assignments
rather than calling AnalyzeExpr. Check bounds in pointer assignments
for impure function calls in FORALL context.

Add `Fold` convenience function to `ExpressionAnalyzer`.

Original-commit: flang-compiler/f18@140c983423
Reviewed-on: https://github.com/flang-compiler/f18/pull/904
2020-01-03 14:10:26 -08:00
Tim Keith b58617b940 [flang] Use common SymbolSet type
Replace `std::set<const Symbol *>` with `SymbolSet` from `symbol.h`.

Original-commit: flang-compiler/f18@78e3ff33cc
Reviewed-on: https://github.com/flang-compiler/f18/pull/904
Tree-same-pre-rewrite: false
2020-01-03 14:09:47 -08:00
Tim Keith ec88d6780f [flang] Fix type resolution in ConcurrentHeader
As it was implemented we weren't detecting non-constant kind parameters
in the integer-type-spec. The fix is just to walk the integer-type-spec
like was do any other one.

Also, there is not need for ResolveControlExpressions -- all it does is
walk that part of the parse tree.

Original-commit: flang-compiler/f18@8c0d890eb8
Reviewed-on: https://github.com/flang-compiler/f18/pull/904
Tree-same-pre-rewrite: false
2020-01-03 14:09:47 -08:00
Tim Keith 83d574bf07 [flang] Move forall01 to ERROR_TESTS
That seems to be what was intended and it provides for better checking
of errors.

Original-commit: flang-compiler/f18@99376d77a0
Reviewed-on: https://github.com/flang-compiler/f18/pull/904
Tree-same-pre-rewrite: false
2020-01-03 14:09:42 -08:00
peter klausler 2e32cadddd [flang] Remove needless std::move() that breaks clang build
Add the std::move() to where it should have been

Original-commit: flang-compiler/f18@54fe9b39a1
Reviewed-on: https://github.com/flang-compiler/f18/pull/903
2020-01-03 11:32:44 -08:00
Pete Steinfeld d32d669651 [flang] Check for passing DO variables to OUT arguments in a CALL statement
I added code to save the INTENT of a dummy argument in the checked expression
of the actual argument.  When processing a CallStmt, I then retrieve the
ProcedureRef, which contains a list of the checked ActualArguments.  I then
traverse this list looking for actual arguments that are active DO variable
that are being passed to dummy arguments whose INTENT is either OUT or INOUT.
For OUT dummies, I put out an error message and warn for INOUT dummies.

Original-commit: flang-compiler/f18@0ff1d26428
Reviewed-on: https://github.com/flang-compiler/f18/pull/902
2020-01-03 08:53:42 -08:00
peter klausler 9948f910a5 [flang] Handle type-bound user-defined operators
Pre-review clean-up

Original-commit: flang-compiler/f18@1d4e85563a
Reviewed-on: https://github.com/flang-compiler/f18/pull/901
2020-01-02 11:49:55 -08:00
Tim Keith 96ce00bba2 [flang] Add .mod file dependencies
Make compilation of other predefined module files depend on
__fortran_builtins.mod. Currently only iso_c_binding.f90 and
iso_fortran_env.f90 depend on it but others could in the future.

Create the .f18.mod files by copying from the .mod files so that
we don't have to worry about dependencies for those.

Original-commit: flang-compiler/f18@8209ad3d32
Reviewed-on: https://github.com/flang-compiler/f18/pull/899
2019-12-31 14:08:12 -08:00
peter klausler c587f89a3c [flang] Prep for review
Original-commit: flang-compiler/f18@25cb92e990
Reviewed-on: https://github.com/flang-compiler/f18/pull/900
2019-12-31 14:10:28 -08:00
peter klausler ceb8196023 [flang] Put templates back into implementation header
Original-commit: flang-compiler/f18@8949924351
Reviewed-on: https://github.com/flang-compiler/f18/pull/900
Tree-same-pre-rewrite: false
2019-12-31 13:58:26 -08:00
peter klausler 8deb4bbeb7 [flang] More restructuring
Original-commit: flang-compiler/f18@6e4aca113a
Reviewed-on: https://github.com/flang-compiler/f18/pull/900
Tree-same-pre-rewrite: false
2019-12-31 13:43:15 -08:00
peter klausler d64886d01b [flang] Break up fold.cc along per-type fault lines
Original-commit: flang-compiler/f18@8022c143d9
Reviewed-on: https://github.com/flang-compiler/f18/pull/900
Tree-same-pre-rewrite: false
2019-12-31 12:20:42 -08:00
peter klausler add998bec1 [flang] Make SHAPE= argument to C_F_POINTER() sensitive to -Mlargearray
Original-commit: flang-compiler/f18@daaa74bbc8
Reviewed-on: https://github.com/flang-compiler/f18/pull/900
Tree-same-pre-rewrite: false
2019-12-31 11:06:07 -08:00
peter klausler ec833a6bb7 [flang] Patch build problem
Original-commit: flang-compiler/f18@a668512100
Reviewed-on: https://github.com/flang-compiler/f18/pull/898
2019-12-31 09:19:08 -08:00
peter klausler 663db2741d [flang] C_F_POINTER
Emit INTRINSIC statements in module files

Argument checking utility

Complete error checking

Original-commit: flang-compiler/f18@9c6a88f048
Reviewed-on: https://github.com/flang-compiler/f18/pull/896
2019-12-31 08:34:53 -08:00
peter klausler b8a7bad3e0 [flang] Fix test for assignment to host-associated object in PURE
Original-commit: flang-compiler/f18@019e61aa85
Reviewed-on: https://github.com/flang-compiler/f18/pull/893
2019-12-24 17:53:01 -08:00
Steve Scalpone 71f6a80c2b [flang] The #! sequence must be at the start of the script file. (flang-compiler/f18#894)
Original-commit: flang-compiler/f18@b1ff232730
Reviewed-on: https://github.com/flang-compiler/f18/pull/894
2019-12-24 16:58:28 -08:00
Pete Steinfeld 611db270f6 [flang] Semantic checks to see if a DO variable is modified
I added infrastructure to SemanticsContext to track active DO variables
and the source locations where they appear in DO statements.  I also
added code to semantics.[h,cc] to check to see if a DO variable is
already defined, and, if so, to emit an error message along with a
reference to the relevant DO construct.  I also added calls to several
places where variables are defined to determine if the definitions are
happening in the context of an active DO construct.

I have not yet added the checks for DO variables being redefined when passing
them as actual arguments to dummy arguments with INTENT(OUT) or INTENT(INOUT).
I wanted to get these changes merged first and catch up with the other changes
in master.

Original-commit: flang-compiler/f18@1bbfcca61b
Reviewed-on: https://github.com/flang-compiler/f18/pull/860
2019-12-24 15:16:36 -08:00
peter klausler 16c5b86368 [flang] Fix off-by-one error in preprocessing expressions
Original-commit: flang-compiler/f18@4c08a4a1be
Reviewed-on: https://github.com/flang-compiler/f18/pull/891
2019-12-23 16:18:21 -08:00
Gary Klimowicz a0caa6af36 [flang] Fix clang-format issues identified during relicensing
While running clang-format during the relicensing, there were
a few files that showed minor format issues that could be cleaned
up. These changes address them.

Original-commit: flang-compiler/f18@b308f9e35a
Reviewed-on: https://github.com/flang-compiler/f18/pull/890
2019-12-23 11:16:00 -08:00
Gary Klimowicz 9e7548ab31 [flang] Flang relicensing changes for LLVM Apache 2.0 license
This changes the license information in many of the flang source files.
- Renamed LICENSE to LICENSE.txt.
- NVIDIA Copyright lines have been removed.
- Initial lines for files follow the LLVM coding convention (file name on the first line; Emacs mode information on the first line).
- License references have been replaced with the abridged LLVM text.
- License information was removed from the test files.
- No file header was placed on test files (these weren't in most LLVM test files).
- License information was added to documentation files where it was missing.

We did not add brief file summaries to the initial line.

See http://llvm.org/docs/DeveloperPolicy.html#new-llvm-project-license-framework
for a description of the new license.

See http://llvm.org/docs/CodingStandards.html#file-headers
for a description of the new LLVM standard file header.

Original-commit: flang-compiler/f18@add6cde724
Reviewed-on: https://github.com/flang-compiler/f18/pull/887
2019-12-23 10:26:16 -08:00
Kiran Chandramohan 69d01593b4 [flang] Mark ieee_get_flag and ieee_get_halting_mode as elemental
Original-commit: flang-compiler/f18@d6237fa311
Reviewed-on: https://github.com/flang-compiler/f18/pull/886
2019-12-20 20:28:45 +00:00
peter klausler d67fbce92b [flang] Fix kind of REAL(complex) to be the same as the argument by default
Fixes for expression formatting

Original-commit: flang-compiler/f18@13e8909587
Reviewed-on: https://github.com/flang-compiler/f18/pull/885
2019-12-20 12:06:03 -08:00
peter klausler 3a725ca8d0 [flang] Auto conversion of integer scalar actual argument exprs
Add documentation

Original-commit: flang-compiler/f18@c1b200d238
Reviewed-on: https://github.com/flang-compiler/f18/pull/884
2019-12-20 10:01:49 -08:00
peter klausler 617a4cce50 [flang] Roll up fixes for semantic analysis of SPEC CPU codes
- Add cases to IsDescriptor
- Fix NULLIFY in PURE checking
- Fix fotonik3d mutually-referencing derived type bug
- Fix spurious I/O error message on ALLOCATE

Original-commit: flang-compiler/f18@34b64db7da
Reviewed-on: https://github.com/flang-compiler/f18/pull/883
2019-12-19 18:05:58 -08:00
Tim Keith 2e9633125e [flang] Save CallStmt::typedCall (flang-compiler/f18#879)
When `ExpressionAnalyzer::AnalyzeCall` processed a subroutine it was
always returning std::nullopt. Change it to return a `ProcedureRef`
wrapped in an `Expr` so that it can be saved in `CallStmt::typedCall`.

Original-commit: flang-compiler/f18@2cc226f66e
Reviewed-on: https://github.com/flang-compiler/f18/pull/879
2019-12-19 09:52:15 -08:00
Tim Keith c6aaa9875d [flang] Remove extraneous occurences of parser::
This file is in `Fortran::parser` so we don't need to qualify names
with `parser::`.

Original-commit: flang-compiler/f18@e8e7ffcae8
Reviewed-on: https://github.com/flang-compiler/f18/pull/878
2019-12-18 16:29:50 -08:00
Tim Keith 37de6803e3 [flang] Include analyzed exprs in parse tree dump
When dumping the parse tree, if there are analyzed expressions,
assignments, or call statements, include the Fortran form of those
in the dump.

This uses the same `AnalyzedObjectsAsFortran` object that unparsing
does so it applies to the same nodes.

We already do something like this for `Name` nodes as well as some
predefined types, so abstract it into an `AsFortran` function which
returns the Fortran source for a node that is to be included in the
dump.

Original-commit: flang-compiler/f18@823b044d2a
Reviewed-on: https://github.com/flang-compiler/f18/pull/878
Tree-same-pre-rewrite: false
2019-12-18 16:29:08 -08:00
peter klausler e668139fdc [flang] Fix unparsing of assignment representation and excess parentheses
More fixes, and move prefix/infix/suffix strings into formatting.cc

Original-commit: flang-compiler/f18@49d68700e0
Reviewed-on: https://github.com/flang-compiler/f18/pull/874
2019-12-18 16:10:16 -08:00
peter klausler cfe146bfde [flang] Back some changes out
Original-commit: flang-compiler/f18@7f6345ac62
Reviewed-on: https://github.com/flang-compiler/f18/pull/873
2019-12-17 12:32:16 -08:00
peter klausler cd1d3881f1 [flang] Save analyzed CALL statements in the parse tree
Original-commit: flang-compiler/f18@bd618f179c
Reviewed-on: https://github.com/flang-compiler/f18/pull/873
Tree-same-pre-rewrite: false
2019-12-17 10:53:20 -08:00
peter klausler 828eed971b [flang] Improve commentary
Original-commit: flang-compiler/f18@364ac83bfc
Reviewed-on: https://github.com/flang-compiler/f18/pull/862
2019-12-16 14:28:57 -08:00
peter klausler 40f0e01d2d [flang] Outline per-type parsers to reduce f18 build-time
CPU & memory requirements

Original-commit: flang-compiler/f18@f48fe07dfa
Reviewed-on: https://github.com/flang-compiler/f18/pull/862
Tree-same-pre-rewrite: false
2019-12-16 12:55:41 -08:00
Tim Keith ea00274e6d [flang] Add evaluate::GetDerivedTypeSpec(DynamicType)
It gets the semantics::DerivedTypeSpec of a DynamicType if it has one.
Make use of it where it simplifies the code.

Original-commit: flang-compiler/f18@9ad12e7c13
Reviewed-on: https://github.com/flang-compiler/f18/pull/872
2019-12-16 14:48:27 -08:00