Removal of Return with Depressed Stack Pointer support

	Removal of Return with Depressed Stack Pointer support
	* tree.h (TYPE_RETURNS_STACK_DEPRESSED): Delete.
	(ECF_SP_DEPRESSED): Likewise.
	(ECF_LIBCALL_BLOCK, ECF_NOVOPS): Adjust.
	* calls.c (emit_call_1): Do not test ECF_SP_DEPRESSED.
	(flags_from_decl_or_type): Do not test TYPE_RETURNS_STACK_DEPRESSED.
	(expand_call): Do not test ECF_SP_DEPRESSED.
	* dse.c (dse_step0): Do not test TYPE_RETURNS_STACK_DEPRESSED.
	* function.c (keep_stack_depressed): Delete.
	(handle_epilogue_set): Likewise.
	(update_epilogue_consts): Likewise.
	(emit_equiv_load): Likewise.
	(thread_prologue_and_epilogue_insns): Remove support for Return with
	Depressed Stack Pointer.
	* print-tree.c (print_node): Do not test TYPE_RETURNS_STACK_DEPRESSED.

ada/
	* gigi.h (create_subprog_type): Remove returns_with_dsp parameter.
	* decl.c (gnat_to_gnu_entity): Adjust for above new prototype.
	* utils.c (create_subprog_type): Remove returns_with_dsp parameter.
	* trans.c (gnat_to_gnu) <N_Return_Statement>: Remove code dealing with
	Return by Depressed Stack Pointer.

From-SVN: r133976

1 files changed, 5 insertions, 8 deletions

diff --git a/gcc/ada/utils.c b/gcc/ada/utils.c
index d138976..5c96217 100644
--- a/gcc/ada/utils.c
+++ b/gcc/ada/utils.c
@@ -1255,17 +1255,15 @@ split_plus (tree in, tree *pvar)
    otherwise we are dealing with a function. PARAM_DECL_LIST is a list of
    PARM_DECL nodes that are the subprogram arguments.  CICO_LIST is the
    copy-in/copy-out list to be stored into TYPE_CICO_LIST.
-   RETURNS_UNCONSTRAINED is nonzero if the function returns an unconstrained
-   object.  RETURNS_BY_REF is nonzero if the function returns by reference.
-   RETURNS_WITH_DSP is nonzero if the function is to return with a
-   depressed stack pointer.  RETURNS_BY_TARGET_PTR is true if the function
-   is to be passed (as its first parameter) the address of the place to copy
-   its result.  */
+   RETURNS_UNCONSTRAINED is true if the function returns an unconstrained
+   object.  RETURNS_BY_REF is true if the function returns by reference.
+   RETURNS_BY_TARGET_PTR is true if the function is to be passed (as its
+   first parameter) the address of the place to copy its result.  */
 
 tree
 create_subprog_type (tree return_type, tree param_decl_list, tree cico_list,
                      bool returns_unconstrained, bool returns_by_ref,
-                     bool returns_with_dsp, bool returns_by_target_ptr)
+                     bool returns_by_target_ptr)
 {
   /* A chain of TREE_LIST nodes whose TREE_VALUEs are the data type nodes of
      the subprogram formal parameters. This list is generated by traversing the
@@ -1302,7 +1300,6 @@ create_subprog_type (tree return_type, tree param_decl_list, tree cico_list,
 
   TYPE_CI_CO_LIST (type) = cico_list;
   TYPE_RETURNS_UNCONSTRAINED_P (type) = returns_unconstrained;
-  TYPE_RETURNS_STACK_DEPRESSED (type) = returns_with_dsp;
   TYPE_RETURNS_BY_REF_P (type) = returns_by_ref;
   TYPE_RETURNS_BY_TARGET_PTR_P (type) = returns_by_target_ptr;
   return type;