fortran: Inline integral MINLOC/MAXLOC with no DIM and no MASK [PR90608]

Enable generation of inline code for the MINLOC and MAXLOC intrinsic,
if the ARRAY argument is of integral type and of any rank (only the rank 1
case was previously inlined), and neither DIM nor MASK arguments are
present.

This needs a few adjustments in gfc_conv_intrinsic_minmaxloc,
mainly to replace the single variables POS and OFFSET, with collections
of variables, one variable per dimension each.

The restriction to integral ARRAY and absent MASK limits the scope of
the change to the cases where we generate single loop inline code.  The
code generation for the second loop is only accessible with ARRAY of rank
1, so it can continue using a single variable.  A later change will extend
inlining to the double loop cases.

There is some bounds checking code that was previously handled by the
library, and that needed some changes in the scalarizer to avoid regressing.
The bounds check code generation was already supported by the scalarizer,
but it was only applying to array reference sections, checking both
for array bound violation and for shape conformability between all the
involved arrays.  With this change, for MINLOC or MAXLOC, enable the
conformability check between all the scalarized arrays, and disable the
array bound violation check.

	PR fortran/90608

gcc/fortran/ChangeLog:

	* trans-array.cc (gfc_conv_ss_startstride): Set the MINLOC/MAXLOC
	result upper bound using the rank of the ARRAY argument.  Ajdust
	the error message for intrinsic result arrays.  Only check array
	bounds for array references.  Move bound check decision code...
	(bounds_check_needed): ... here as a new predicate.  Allow bound
	check for MINLOC/MAXLOC intrinsic results.
	* trans-intrinsic.cc (gfc_conv_intrinsic_minmaxloc): Change the
	result array upper bound to the rank of ARRAY.  Update the NONEMPTY
	variable to depend on the non-empty extent of every dimension.  Use
	one variable per dimension instead of a single variable for the
	position and the offset.  Update their declaration, initialization,
	and update to affect the variable of each dimension.  Use the first
	variable only in areas only accessed with rank 1 ARRAY argument.
	Set every element of the result using its corresponding variable.
	(gfc_inline_intrinsic_function_p): Return true for integral ARRAY
	and absent DIM and MASK.

gcc/testsuite/ChangeLog:

	* gfortran.dg/maxloc_bounds_4.f90: Additionally accept the error
	message emitted by the scalarizer.

0 files changed, 0 insertions, 0 deletions