2007-10-29 Paul Thomas <pault@gcc.gnu.org>
PR fortran/31217
PR fortran/33811
PR fortran/33686
* trans-array.c (gfc_conv_loop_setup): Send a complete type to
gfc_trans_create_temp_array if the temporary is character.
* trans-stmt.c (gfc_trans_assign_need_temp): Do likewise for
allocate_temp_for_forall_nest.
(forall_replace): New function.
(forall_replace_symtree): New function.
(forall_restore): New function.
(forall_restore_symtree): New function.
(forall_make_variable_temp): New function.
(check_forall_dependencies): New function.
(cleanup_forall_symtrees): New function.
gfc_trans_forall_1): Add and initialize pre and post blocks.
Call check_forall_dependencies to check for all dependencies
and either trigger second forall block to copy temporary or
copy lval, outside the forall construct and replace all
dependent references. After assignment clean-up and coalesce
the blocks at the end of the function.
* gfortran.h : Add prototypes for gfc_traverse_expr and
find_forall_index.
expr.c (gfc_traverse_expr): New function to traverse expression
and visit all subexpressions, under control of a logical flag,
a symbol and an integer pointer. The slave function is caller
defined and is only called on EXPR_VARIABLE.
(expr_set_symbols_referenced): Called by above to set symbols
referenced.
(gfc_expr_set_symbols_referenced): Rework of this function to
use two new functions above.
* resolve.c (find_forall_index): Rework with gfc_traverse_expr,
using forall_index.
(forall_index): New function used by previous.
* dependency.c (gfc_check_dependency): Use gfc_dep_resolver for
all references, not just REF_ARRAY.
(gfc_dep_resolver): Correct the logic for substrings so that
overlapping arrays are handled correctly.
2007-10-29 Paul Thomas <pault@gcc.gnu.org>
PR fortran/31217
PR fortran/33811
* gfortran.dg/forall_12.f90: New test.
PR fortran/33686
* gfortran.dg/forall_13.f90: New test.
From-SVN: r129720
