Commit Graph

11 Commits

Author SHA1 Message Date
Peter Klausler 3b61587c9e [flang] LBOUND() edge case: empty dimension
LBOUND must return 1 for an empty dimension, no matter what
explicit expression might appear in a declaration or arrive in
a descriptor.

Differential Revision: https://reviews.llvm.org/D121488
2022-03-14 11:16:09 -07:00
Peter Klausler 4133a85c86 [flang] Accommodate arrays with a zero-extent dimension in location folding
The index incrementation code used for FINDLOC, MAXLOC, and MINLOC folding
would crash if the array had a zero extent on the dimension selected with
a DIM= argument since the subscript passed to IncrementSubscripts would
have a value less than the lower bound.  Fix, and add tests.

Differential Revision: https://reviews.llvm.org/D121125
2022-03-07 10:44:18 -08:00
Peter Klausler 5c5bde1bb6 [flang] Fold SCALE()
Fold references to the intrinsic function SCALE().

(Also work around some MSVC headaches somehow exposed by
this patch: disable a bogus MSVC warning that began to appear
in unrelated source files, and avoid the otherwise-necessary
use of the "template" keyword in a call to a template member
function of a class template.)

Differential Revision: https://reviews.llvm.org/D117150
2022-01-15 09:31:00 -08:00
Peter Klausler bd859cb4de [flasg] Debug folding of substring references
Character substrings weren't being folded correctly;
add tests and rework the implementation so that substrings
of literals and named constant character scalars & arrays
are properly folded for use in constant expressions.

Differential Revision: https://reviews.llvm.org/D117343
2022-01-14 16:09:06 -08:00
Peter Klausler 85ec449352 [flang] Fix ORDER= argument to RESHAPE
The ORDER= argument to the transformational intrinsic function RESHAPE
was being misinterpreted in an inverted way that could be detected only
with 3-d or higher rank array.  Fix in both folding and the runtime, and
extend tests.

Differential Revision: https://reviews.llvm.org/D113699
2021-11-12 10:25:00 -08:00
Peter Klausler 8256867508 [flang] Fold FINDLOC()
Fold the transformational intrinsic function FINDLOC() for
all combinations of optional arguments and data types.

Differential Revision: https://reviews.llvm.org/D110757
2021-09-30 12:08:10 -07:00
peter klausler 0d8331c06b [flang] Refine symbol sorting
Replace semantics::SymbolSet with alternatives that clarify
whether the set should order its contents by source position
or not.  This matters because positionally-ordered sets must
not be used for Symbols that might be subjected to name
replacement during name resolution, and address-ordered
sets must not be used (without sorting) in circumstances
where the order of their contents affects the output of the
compiler.

All set<> and map<> instances in the compiler that are keyed
by Symbols now have explicit Compare types in their template
instantiations.  Symbol::operator< is no more.

Differential Revision: https://reviews.llvm.org/D98878
2021-03-18 11:18:14 -07:00
Peter Steinfeld 2cf52504bb [flang] Fixes for RESHAPE()
I fixed an assert caused by passing an empty array as the source= argument to
RESHAPE().  In the process, I noticed that there were no tests for RESHAPE(),
so I wrote a test that covers all the description in 16.9.163.  In the process,
I made the error messages more consistent and descriptive.  I also changed the
test to see if a reference to an intrinsic function was a constant to say that
it is a constant if it's a refererence to an invalid intrinsic.  This avoids
emitting multiple messages for the same erroneous source.

Differential Revision: https://reviews.llvm.org/D84904
2020-07-30 19:05:06 -07:00
Pete Steinfeld f72106e2a3 [flang] Fix an assert when RESHAPE() is called on empty strings
Summary:
When a constant array of empty strings goes through contant folding, the result
is something that contains no bytes.  If this array is passed to the intrinsic
function `RESHAPE()`, we were not handling things correctly.  I fixed this by
checking for an empty destination when calling the function `CopyFrom()` on an
array of strings.

I also added a test with a couple of different examples that trigger the
problem.

Reviewers: klausler, tskeith, DavidTruby

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D84352
2020-07-22 12:21:58 -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
CarolineConcatto 64ab3302d5 [flang] [LLVMify F18] Compiler module folders should have capitalised names ()
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