llvm/flang/test/semantics/test_symbols.sh
Tim Keith ee28b70827 [flang] Resolve names in ASSOCIATE and SELECT TYPE
Create `AssocEntityDetails` for symbols that represent entities
identified by the associate-name in ASSOCIATE and SELECT TYPE
constructs.

For ASSOCIATE, create a new scope for the associated entity.
For SELECT TYPE, create a new scope for each of type guard blocks.
Each one contains an associated entity with the appropriate type.

For SELECT TYPE, also create a place-holder symbol for the
associate-name in the SELECT TYPE statement. The real symbols
are in the new scopes and none of them is uniquely identified
with the associate-name.

Handling of `Selector` is common between these, with
`associate-name => expr | variable` recorded in
`ConstructVisitor::association_`.

When the selector is an expression, derive the type of the associated
entity from the type of the expression. This required some refactoring
of how `DeclTypeSpec`s are created. The `DerivedTypeSpec` that comes
from and expression is const so we can only create const `DeclTypeSpec`s
from it. But there were times during name resolution when we needed to
set type parameters in the current `DeclTypeSpec`. Now the non-const
`DerivedTypeSpec` is saved separately from the const `DeclTypeSpec`
while we are processing a declaration type spec. This makes it
unnecessary to save the derived type name.

Add a type alias for `common::Indirection` to reduce verbosity.

Original-commit: flang-compiler/f18@b7668cebe4
Reviewed-on: https://github.com/flang-compiler/f18/pull/261
Tree-same-pre-rewrite: false
2019-01-15 16:59:20 -08:00

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#!/usr/bin/env bash
# Copyright (c) 2018-2019, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Compile a source file with '-funparse-with-symbols' and verify
# we get the right symbols in the output, i.e. the output should be
# the same as the input, except for the copyright comment.
# Change the compiler by setting the F18 environment variable.
PATH=/usr/bin:/bin
srcdir=$(dirname $0)
CMD="${F18:-../../tools/f18/f18} -funparse-with-symbols"
if [[ $# != 1 ]]; then
echo "Usage: $0 <fortran-source>"
exit 1
fi
src=$srcdir/$1
[[ ! -f $src ]] && echo "File not found: $src" && exit 1
temp=temp-$1
rm -rf $temp
mkdir $temp
[[ $KEEP ]] || trap "rm -rf $temp" EXIT
src1=$temp/1.f90
src2=$temp/2.f90
src3=$temp/3.f90
diffs=$temp/diffs
# Strip out blank lines and all comments except "!DEF:" and "!REF:"
sed -e 's/!\([DR]EF:\)/KEEP \1/' \
-e 's/!.*//' -e 's/ *$//' -e '/^$/d' -e 's/KEEP \([DR]EF:\)/!\1/' \
$src > $src1
egrep -v '^ *!' $src1 > $src2 # strip out meaningful comments
$CMD $src2 > $src3 # compile, inserting comments for symbols
if diff -w -U999999 $src1 $src3 > $diffs; then
echo PASS
else
sed '1,/^\@\@/d' $diffs
echo
echo FAIL
exit 1
fi