re PR fortran/29952 (Flag to give runtime information " array temporary was created for argument")

2008-07-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/29952
	* gfortran.h:  Add "warn_array_temp" to gfc_option_t.
	* lang.opt:  Add -Warray-temporaries.
	* invoke.texi:  Document -Warray-temporaries
	* trans-array.h (gfc_trans_create_temp_array):  Add argument of
	type *locus.
	(gfc_conv_loop_setup):  Likewise.
	* trans-array.c (gfc_trans_create_temp_array):  If
	-Warray-temporaries is given and locus is present, warn about
	creation of array temporaries.
	(gfc_trans_array_constructor_subarray):  Add locus to call
	of gfc_conv_loop_setup.
	(gfc_trans_array_constructor):  Add where argument.  Pass where
	argument to call of gfc_trans_create_temp_array.
	(gfc_add_loop_ss_code):  Add where argument.  Pass where argument
	to recursive call of gfc_add_loop_ss_code and to call of
	gfc_trans_array_constructor.
	(gfc_conv_loop_setup):  Add where argument.  Pass where argument
	to calls to gfc_add_loop_ss_code and to gfc_trans_create_temp_array.
	(gfc_conv_expr_descriptor):  Pass location to call of
	gfc_conv_loop_setup.
	(gfc_conv_array_parameter):  If -Warray-temporaries is given,
	warn about creation of temporary arrays.
	* trans-expr.c (gfc_conv_subref_array_arg):  Add where argument
	to call to gfc_conv_loop_setup.
	(gfc_conv_function_call):  Add where argument to call to
	gfc_trans_creat_temp_array.
	(gfc_trans_subarray_assign):  Likewise.
	(gfc_trans_assignment_1):  Add where argument to call to
	gfc_conv_loop_setup.
	* trans-stmt.c (gfc_conv_elemental_dependencies):  Add where
	argument to call to gfc_trans_create_temp_array.
	(gfc_trans_call):  Add where argument to call to gfc_conv_loop_setup.
	(generate_loop_for_temp_to_lhs):  Likewise.
	(generate_loop_for_rhs_to_temp):  Likewise.
	(compute_inner_temp_size):  Likewise.
	(gfc_trans-pointer_assign_need_temp):  Likewise.
	(gfc_evaluate_where_mask):  Likewise.
	(gfc_trans_where_assign):  Likewise.
	(gfc_trans_where_3):  Likewise.
	* trans-io.c (transfer_srray_component):  Add where argument
	to function. Add where argument to call to gfc_conv_loop_setup.
	(transfer_expr):  Add where argument to call to
	transfer_array_component.
	(gfc_trans_transfer):  Add where expression to call to
	gfc_conv_loop_setup.
	* trans-intrinsic.c (gfc_conv_intrinsic_anyall):  Add
	where argument to call to gfc_conv_loop_setup.
	(gfc_conv_intrinsic_count):  Likewise.
	(gfc_conv_intrinsic_arith):  Likewise.
	(gfc_conv_intrinsic_dot_product):  Likewise.
	(gfc_conv_intrinsic_minmaxloc):  Likewise.
	(gfc_conv_intrinsic_minmaxval):  Likewise.
	(gfc_conv_intrinsic_array_transfer):  Warn about
	creation of temporary array.
	Add where argument to call to gfc_trans_create_temp_array.
	* options.c (gfc_init_options):  Initialize gfc_option.warn_array_temp.
	(gfc_handle_option):  Set gfc_option.warn_array_temp.

2008-07-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/29952
	* gfortran.dg/array_temporaries_1.f90: New test case.

From-SVN: r138112

1 files changed, 6 insertions, 5 deletions

diff --git a/gcc/fortran/trans-expr.c b/gcc/fortran/trans-expr.c
index b5c9cdd..3240d7f 100644
--- a/gcc/fortran/trans-expr.c
+++ b/gcc/fortran/trans-expr.c
@@ -2059,7 +2059,7 @@ gfc_conv_subref_array_arg (gfc_se * parmse, gfc_expr * expr,
   gfc_add_ss_to_loop (&loop, loop.temp_ss);
 
   /* Setup the scalarizing loops.  */
-  gfc_conv_loop_setup (&loop);
+  gfc_conv_loop_setup (&loop, &expr->where);
 
   /* Pass the temporary descriptor back to the caller.  */
   info = &loop.temp_ss->data.info;
@@ -2124,7 +2124,7 @@ gfc_conv_subref_array_arg (gfc_se * parmse, gfc_expr * expr,
   gfc_conv_ss_startstride (&loop2);
 
   /* Setup the scalarizing loops.  */
-  gfc_conv_loop_setup (&loop2);
+  gfc_conv_loop_setup (&loop2, &expr->where);
 
   gfc_copy_loopinfo_to_se (&lse, &loop2);
   gfc_copy_loopinfo_to_se (&rse, &loop2);
@@ -2717,7 +2717,8 @@ gfc_conv_function_call (gfc_se * se, gfc_symbol * sym,
 	     mustn't be deallocated.  */
 	  callee_alloc = sym->attr.allocatable || sym->attr.pointer;
 	  gfc_trans_create_temp_array (&se->pre, &se->post, se->loop, info, tmp,
-				       false, !sym->attr.pointer, callee_alloc);
+				       false, !sym->attr.pointer, callee_alloc,
+				       &se->ss->expr->where);
 
 	  /* Pass the temporary as the first argument.  */
 	  tmp = info->descriptor;
@@ -3335,7 +3336,7 @@ gfc_trans_subarray_assign (tree dest, gfc_component * cm, gfc_expr * expr)
   gfc_conv_ss_startstride (&loop);
 
   /* Setup the scalarizing loops.  */
-  gfc_conv_loop_setup (&loop);
+  gfc_conv_loop_setup (&loop, &expr->where);
 
   /* Setup the gfc_se structures.  */
   gfc_copy_loopinfo_to_se (&lse, &loop);
@@ -4415,7 +4416,7 @@ gfc_trans_assignment_1 (gfc_expr * expr1, gfc_expr * expr2, bool init_flag)
       /* Resolve any data dependencies in the statement.  */
       gfc_conv_resolve_dependencies (&loop, lss, rss);
       /* Setup the scalarizing loops.  */
-      gfc_conv_loop_setup (&loop);
+      gfc_conv_loop_setup (&loop, &expr2->where);
 
       /* Setup the gfc_se structures.  */
       gfc_copy_loopinfo_to_se (&lse, &loop);