Add stopped_images to the list of intrinsic functions. Add a
semantics test for stopped_images.
Reviewed By: klausler, ngeorge1098
Differential Revision: https://reviews.llvm.org/D129513
The predicate "CanBeCalledViaImplicitInterface()" was returning false for
restricted specific intrinsic functions (e.g., SIN) because their procedure
characteristics have the elemental attribute; this leads to a bogus semantic
error when one attempts to use them as proc-targets in procedure pointer
assignment statements when the left-hand side of the assignment is a procedure
pointer with an implicit interface. However, these restricted specific intrinsic
functions have always been allowed as special cases for such usage -- it is
as if they are elemental when it is necessary for them to be so, but not
when it's a problem.
Differential Revision: https://reviews.llvm.org/D130386
When a procedure pointer is associated with a procedure target, f18
will emit hard error messages if the pointer is incompatible with the
target in a way that would cause the program to not work if the
procedure pointer were actually called. However, in the context of
the ASSOCIATED() intrinsic, the compiler should not consider a query
to be a compilation-time error if the pointer and the target are
incompatible. The standard gives us sufficient wiggle room here
to treat these cases as warnings.
Attempts to use ASSOCIATED to test whether a procedure pointer is
associated with a data object, or vice versa, remain errors.
Differential Revision: https://reviews.llvm.org/D130384
Add the collective subroutine, co_sum, to the list of intrinsics.
In accordance with 16.9.50 and 16.9.137, add a check for and an
error if coindexed objects are being passed to certain arguments
in co_sum and in move_alloc. Add a semantics test to check that
this error is successfully caught in calls to move_alloc. Remove
the XFAIL directive, update the ERROR directives and add both
standard-conforming and non-standard conforming calls to the
semantics test for co_sum.
Reviewed By: jeanPerier
Differential Revision: https://reviews.llvm.org/D114134
Some procedure pointers and EXTERNAL procedures have neither
explicit interfaces nor result types; these procedures are obviously
not known to be functions, but they could be, so semantics must not
assume that they are necessarily subroutines. Refine the procedure
pointer / dummy procedure compatibility check to handle these more
ambiguous cases and not elicit inappropriate error messages.
Differential Revision: https://reviews.llvm.org/D129674
Add a semantics test for the intrinsic function image_status. Add
a check and restriction on the image argument in image_status,
ensuring that it is a positive value. Add same check on the
size argument of the intrinsic ishftc. Add another check on
the shift argument of ishftc, ensuring that it is less than or
equal to the size argument. Add a short semantics test checking
these restrictions in ishftc function calls.
Reviewed By: klausler
Differential Revision: https://reviews.llvm.org/D128009
Create a TargetCharacteristics class to centralize the few items of
target specific information that are relevant to semantics. Use the
new class for all target queries, including derived type component layout
modeling.
Future work will initialize this class with target information
provided or forwarded by the drivers, and use it to fold layout-dependent
intrinsic functions like TRANSFER().
Differential Revision: https://reviews.llvm.org/D129018
Updates: Attempts to work around build issues on Windows.
While it is indeed an error to use SIZE, SHAPE, or UBOUND on an
assumed-shape dummy argument without also supplying a DIM= argument
to the intrinsic function, it is *not* an error to use these intrinsic
functions on sections or expressions of such arrays. Refine the test
used for the error message.
Differential Revision: https://reviews.llvm.org/D128391
Add failed_images to the list of intrinsic functions. Add a
semantics test for failed_images.
Reviewed By: jeanPerier
Differential Revision: https://reviews.llvm.org/D126805
num_images had previously been added to the list of intrinsics
before the type team_type had been implemented. Now that team_type
is implemented, add the num_images call that has the team argument.
Update the semantics tests for num_images.
Reviewed By: craig.rasmussen
Differential Revision: https://reviews.llvm.org/D126734
The predicate that is used to detect an invalid assumed-size argument
to the intrinsic functions SHAPE, SIZE, & LBOUND gives false results
for arguments whose shapes are not calculatable at compilation time.
Replace with an explicit test for an assumed-size array dummy argument
symbol.
Differential Revision: https://reviews.llvm.org/D125342
The rules in the Fortran standard for specification expressions
are full of special cases and exceptions, and semantics didn't get
them exactly right. It is valid to refer to an INTENT(OUT) dummy
argument in a specification expression in the context of a
specification inquiry function like SIZE(); it is not valid to
reference an OPTIONAL dummy argument outside of the context of
PRESENT. This patch makes the specification expression checker
a little context-sensitive about whether it's examining an actual
argument of a specification inquiry intrinsic function or not.
Differential Revision: https://reviews.llvm.org/D125131
The type compatibility checks for the ARRAY= argument and the dummy
arguments and result of the OPERATION= argument to the REDUCE intrinsic
function need to allow for parameterized data types with LEN parameters.
(Their values are required to be identical but this is not a numbered
constraint requiring a compilation time check).
Differential Revision: https://reviews.llvm.org/D125124
The standard requires that the operands of the intrinsic function
SIGN() must have the same type (INTEGER or REAL), but they are not
required to have the same kind.
Differential Revision: https://reviews.llvm.org/D125105
When resolving a procedure reference, do not allow a successful
intrinsic procedure probe result to override an existing
symbol.
Differential Revision: https://reviews.llvm.org/D123905
Shape analysis of RESHAPE(..., SHAPE=s) should of course return
the SHAPE= actual argument when it is constant; but when it is
not, its length is still known, and thus so is the rank of the
result of RESHAPE(), and shape analysis should at least return
a shape vector of the right length rather than a result that
makes the result appear to be a scalar, which can lead to some
bogus error messages.
Also, while here: rename a private GetShapeHelper::AsShape()
routine so that it can't be confused with the ones in the API
of shape.h.
Differential Revision: https://reviews.llvm.org/D123712
The intrinsics DREAL, DIMAG, and DCONJG are from Fortran 77 extensions.
For DREAL, the type of argument is extended to any complex. For DIMAG
and DCONJG, the type of argument for them should be complex(8). For DIMAG,
the result type should be real(8). For DCONJG, the result type should be
complex(8). Fix the intrinsic interface for them and add test cases for
the semantic checks and the lowering.
Reviewed By: Jean Perier
Differential Revision: https://reviews.llvm.org/D123459
Previously, some semantic checks that are checking if an entity is an
allocatable were relying on the expression being a designator whose
last symbol has the allocatable attribute.
This is wrong since this was considering substrings and array sections of
allocatables as being allocatable. This is wrong (see NOTE 2 in
Fortran 2018 section 9.5.3.1).
Add evaluate::IsAllocatableDesignator to correctly test this.
Also add some semantic tests for ALLOCATED to test the newly added helper.
Note that ifort and nag are rejecting coindexed-named-object in
ALLOCATED (`allocated(coarray_scalar_alloc[2])`).
I think it is wrong given allocated argument is intent(in) as per
16.2.1 point 3.
So 15.5.2.6 point 4 regarding allocatable dummy is not violated (If the actual
argument is a coindexed object, the dummy argument shall have the INTENT (IN)
attribute.) and I think this is valid. gfortran accepts it.
The need for this helper was exposed in https://reviews.llvm.org/D122779.
Differential Revision: https://reviews.llvm.org/D122899
Co-authored-by: Peixin-Qiao <qiaopeixin@huawei.com>
Support the names AND, OR, and XOR for the generic intrinsic
functions IAND, IOR, and IEOR respectively.
Differential Revision: https://reviews.llvm.org/D122034
Using recently established message severity codes, upgrade
non-fatal messages to usage and portability warnings as
appropriate.
Differential Revision: https://reviews.llvm.org/D121246
A recent patch made it possible to emit more localized error messages
pertaining to actual arguments in non-intrinsic procedure references.
Use these new powers for good and make intrinsic error messages more
precise, too.
Differential Revision: https://reviews.llvm.org/D121126
Calls to C_F_POINTER() without the optional SHAPE= third argument
were failing to be recognized as proper calls to the intrinsic,
but the failure was not generating any error message. This led to
a crash in lowering, which rightfully expects a typed expression
to be associated with the call.
So (1) catch silent failures to convert CALL statements as internal
errors, as is done for expressions and assignment statements; and
(2) clean up C_F_POINTER intrinsic handling to cope with only two
arguments and to emit an error for a FPTR= argument with no type.
Differential Revision: https://reviews.llvm.org/D119847
The second argument to the ASSOCIATED intrinsic must be a valid pointer
or target. The test for this property only checked the last symbol
in a data-reference, but any symbol in the reference with the
POINTER or TARGET attribute will do.
Differential Revision: https://reviews.llvm.org/D119450
Some entries in the specific intrinsic function table have the
wrong argument keyword names -- they should agree with the names
of the arguments on their corresponding generic intrinsic function.
Clean them up.
Differential Revision: https://reviews.llvm.org/D118721
The intrinsic table entry for INDEX mistakenly required
the optional BACK= argument to be scalar, but it's an
elemental intrinsic that can accept a conforming array.
Differential Revision: https://reviews.llvm.org/D117700
Accept any keyword argument names of the form "An" for
values of n >= 3 in calls to the intrinsic functions MAX, MIN,
and their variants, so long as "n" has no leading zero and
all the keywords are distinct. Previously, f18 was needlessly
requiring the names to be contiguous. When synthesizing keywords
to characterize the procedure's interface, don't conflict with
the program's keywords.
Differential Revision: https://reviews.llvm.org/D117701
Consistent with previously documented policy, in which
BOZ literals are accepted in non-standard-conforming circumstances
where they can be converted to an unambiguous known numeric type,
allow BOZ literals to be passed as an actual argument in a reference
to a procedure whose explicit interface has a corresponding dummy
argument with a numeric type to which the BOZ literal may be
converted. Improve error messages associated with BOZ literal
actual arguments, too: don't emit multiple errors.
Differential Revision: https://reviews.llvm.org/D117698
The "pad=" argument in the intrinsic function table entry for RESHAPE
has a Rank::Array constraint, and that would be fine if not for RESHAPE
already having an earlier argument that's Rank::Array. It's the only
intrinsic that has multiple Rank::Array arguments. The checking for
the Rank::Array constraint was enforcing that multiple occurrences
of it have the same rank in a call, and that's not appropriate.
Differential Revision: https://reviews.llvm.org/D117149
Max(), MIN(), and their specific variants are defined with an unlimited
number of dummy arguments named A1=, A2=, &c. whose names are almost never
used in practice but should be allowed for and properly checked for the
usual errors when they do appear. The intrinsic table's entries otherwise
have fixed numbers of dummy argument definitions, so add some special
case handling in a few spots for MAX/MIN/&c. checking and procedure
characteristics construction.
Differential Revision: https://reviews.llvm.org/D114750
An erroneous entry in the intrinsics table causes semantics to
crash on a call to system_clock if the optional "count_max="
argument appears and "count=" does not.
Differential Revision: https://reviews.llvm.org/D112738
Check that when a procedure pointer is initialised or assigned with an intrinsic
function, or when its interface is being defined by one, that intrinsic function
is unrestricted specific (listed in Table 16.2 of F'2018).
Mark intrinsics LGE, LGT, LLE, and LLT as restricted specific. Getting their
classifications right helps in designing the tests.
Differential Revision: https://reviews.llvm.org/D112381
To get proper wrap-around behavior for the various kind parameter
values of the optional COUNT= and COUNT_MAX= dummy arguments to
the intrinsic subroutine SYSTEM_CLOCK, add an extra argument to
the APIs for lowering to pass the integer kind of the actual argument.
Avoid confusion by requiring that both actual arguments have the same
kind when both are present. The results of the runtime functions
remain std::int64_t and lowering should still convert them before
storing to the actual argument variables.
Rework the implementation a bit to accomodate the dynamic
specification of the kind parameter, and to clean up some coding
issues with preprocessing and templates.
Use the kind of the COUNT=/COUNT_MAX= actual arguments to determine
the clock's resolution, where possible, in conformance with other
Fortran implementations.
Differential Revision: https://reviews.llvm.org/D111281
These functions were missing from the standard intrinsic module
IEEE_ARITHMETIC. IEEE_SCALB is an alias for the standard intrinsic
function SCALE(), and the others are defined as new builtin intrinsic
functions.
Differential Revision: https://reviews.llvm.org/D111253
Support the extension intrinsic subroutines EXIT([status]) and ABORT()
in the intrinsic table and runtime support library. Lowering remains
to be done.
Differential Revision: https://reviews.llvm.org/D110741
Rearrange the contents of __builtin_* module files a little and
make sure that semantics implicitly USEs the module __Fortran_builtins
before processing each source file. This ensures that the special derived
types for TEAM_TYPE, EVENT_TYPE, LOCK_TYPE, &c. exist in the symbol table
where they will be available for use in coarray intrinsic function
processing.
Update IsTeamType() to exploit access to the __Fortran_builtins
module rather than applying ad hoc name tests. Move it and some
other utilities from Semantics/tools.* to Evaluate/tools.* to make
them available to intrinsics processing.
Add/correct the intrinsic table definitions for GET_TEAM, TEAM_NUMBER,
and THIS_IMAGE to exercise the built-in TEAM_TYPE as an argument and
as a result.
Add/correct/extend tests accordingly.
Differential Revision: https://reviews.llvm.org/D110356
Some intrinsic functions weren't findable because the table
wasn't strictly in order of names.
And complete a missing generalization of the extension DCONJG
to accept any kind of complex argument, like DREAL and DIMAG
were.
Differential Revision: https://reviews.llvm.org/D110002
The intrinsic inquiry functions SIZE and UBOUND -- but not LBOUND --
require a DIM= argument if their first argument is an assumed-size
array. The intrinsic SHAPE must not be used with an assumed-size
array.
Differential Revision: https://reviews.llvm.org/D109912
Added 'this_image()' to the list of functions that are evaluated as intrinsic.
Added IsCoarray functions to determine if an expression is a coarray (corank > 1).
Added save attribute to coarray variables in test file, this_image.f90.
reviewers: klausler, PeteSteinfeld
Differential Revision: https://reviews.llvm.org/D108059
This reverts commit 81f8ad1769.
This seems to break the shared libs build
(linaro-flang-aarch64-sharedlibs bot) with:
undefined reference to `Fortran::semantics::IsCoarray(Fortran::semantics::Symbol const&)
(from tools/flang/lib/Evaluate/CMakeFiles/obj.FortranEvaluate.dir/tools.cpp.o)
When linking lib/libFortranEvaluate.so.14git
Added 'this_image()' to the list of functions that are evaluated as intrinsic.
Added IsCoarray functions to determine if an expression is a coarray (corank > 1).
Added save attribute to coarray variables in test file, this_image.f90.
reviewers: klausler, PeteSteinfeld
Differential Revision: https://reviews.llvm.org/D108059
The double precision KindCode was ignored when building the interface
of specific intrinsic procedures leading to bad semantics checks.
Differential Revision: https://reviews.llvm.org/D108828
Like the similar legacy extension FLOAT(), DFLOAT() represents a
conversion from default integer to DOUBLE PRECISION. Rewrite
into a conversion operation.
Differential Revision: https://reviews.llvm.org/D107489
V Donaldson