calls.c: Remove some dead code and target hooks

Looking at calls.c:initialize_argument_information, I spotted some dead
code that seems to have been left behind from when MPX support was
removed.

This change removes that code as well as the associated target hooks
(which appear to be unused).

gcc/ChangeLog:

	* calls.c (initialize_argument_information): Remove some dead
	code, remove handling for function_arg returning const_int.
	* doc/tm.texi: Delete documentation for unused target hooks.
	* doc/tm.texi.in: Likewise.
	* target.def (load_bounds_for_arg): Delete.
	(store_bounds_for_arg): Delete.
	(load_returned_bounds): Delete.
	(store_returned_bounds): Delete.
	* targhooks.c (default_load_bounds_for_arg): Delete.
	(default_store_bounds_for_arg): Delete.
	(default_load_returned_bounds): Delete.
	(default_store_returned_bounds): Delete.
	* targhooks.h (default_load_bounds_for_arg): Delete.
	(default_store_bounds_for_arg): Delete.
	(default_load_returned_bounds): Delete.
	(default_store_returned_bounds): Delete.

diff --git a/gcc/calls.c b/gcc/calls.c
index e50d3fc3b62080b0e59630c247f7a55aec17eb56..27b59f26ad3de061e3fbd819a520f8546972170a 100644 (file)
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -1287,8 +1287,6 @@ initialize_argument_information (int num_actuals ATTRIBUTE_UNUSED,
   args_size->constant = 0;
   args_size->var = 0;
 
-  bitmap_obstack_initialize (NULL);
-
   /* In this loop, we consider args in the order they are written.
      We fill up ARGS from the back.  */
 
@@ -1297,7 +1295,6 @@ initialize_argument_information (int num_actuals ATTRIBUTE_UNUSED,
     int j = i;
     call_expr_arg_iterator iter;
     tree arg;
-    bitmap slots = NULL;
 
     if (struct_value_addr_value)
       {
@@ -1324,13 +1321,8 @@ initialize_argument_information (int num_actuals ATTRIBUTE_UNUSED,
        j--;
        argpos++;
       }
-
-    if (slots)
-      BITMAP_FREE (slots);
   }
 
-  bitmap_obstack_release (NULL);
-
   /* I counts args in order (to be) pushed; ARGPOS counts in order written.  */
   for (argpos = 0; argpos < num_actuals; i--, argpos++)
     {
@@ -1493,9 +1485,6 @@ initialize_argument_information (int num_actuals ATTRIBUTE_UNUSED,
 
       args[i].reg = targetm.calls.function_arg (args_so_far, arg);
 
-      if (args[i].reg && CONST_INT_P (args[i].reg))
-       args[i].reg = NULL;
-
       /* If this is a sibling call and the machine has register windows, the
         register window has to be unwinded before calling the routine, so
         arguments have to go into the incoming registers.  */

diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index 902402d75032fdce2cfeaa23a0c82da98d2d47b3..990152f5b1510aa035511f8556d04712968eafa1 100644 (file)
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -4079,12 +4079,6 @@ The return value is usually either a @code{reg} RTX for the hard
 register in which to pass the argument, or zero to pass the argument
 on the stack.
 
-The return value can be a @code{const_int} which means argument is
-passed in a target specific slot with specified number.  Target hooks
-should be used to store or load argument in such case.  See
-@code{TARGET_STORE_BOUNDS_FOR_ARG} and @code{TARGET_LOAD_BOUNDS_FOR_ARG}
-for more information.
-
 The value of the expression can also be a @code{parallel} RTX@.  This is
 used when an argument is passed in multiple locations.  The mode of the
 @code{parallel} should be the mode of the entire argument.  The
@@ -5430,37 +5424,6 @@ defined, then define this hook to return @code{true} if
 Otherwise, you should not define this hook.
 @end deftypefn
 
-@deftypefn {Target Hook} rtx TARGET_LOAD_BOUNDS_FOR_ARG (rtx @var{slot}, rtx @var{arg}, rtx @var{slot_no})
-This hook is used by expand pass to emit insn to load bounds of
-@var{arg} passed in @var{slot}.  Expand pass uses this hook in case
-bounds of @var{arg} are not passed in register.  If @var{slot} is a
-memory, then bounds are loaded as for regular pointer loaded from
-memory.  If @var{slot} is not a memory then @var{slot_no} is an integer
-constant holding number of the target dependent special slot which
-should be used to obtain bounds.  Hook returns RTX holding loaded bounds.
-@end deftypefn
-
-@deftypefn {Target Hook} void TARGET_STORE_BOUNDS_FOR_ARG (rtx @var{arg}, rtx @var{slot}, rtx @var{bounds}, rtx @var{slot_no})
-This hook is used by expand pass to emit insns to store @var{bounds} of
-@var{arg} passed in @var{slot}.  Expand pass uses this hook in case
-@var{bounds} of @var{arg} are not passed in register.  If @var{slot} is a
-memory, then @var{bounds} are stored as for regular pointer stored in
-memory.  If @var{slot} is not a memory then @var{slot_no} is an integer
-constant holding number of the target dependent special slot which
-should be used to store @var{bounds}.
-@end deftypefn
-
-@deftypefn {Target Hook} rtx TARGET_LOAD_RETURNED_BOUNDS (rtx @var{slot})
-This hook is used by expand pass to emit insn to load bounds
-returned by function call in @var{slot}.  Hook returns RTX holding
-loaded bounds.
-@end deftypefn
-
-@deftypefn {Target Hook} void TARGET_STORE_RETURNED_BOUNDS (rtx @var{slot}, rtx @var{bounds})
-This hook is used by expand pass to emit insn to store @var{bounds}
-returned by function call into @var{slot}.
-@end deftypefn
-
 @node Trampolines
 @section Support for Nested Functions
 @cindex support for nested functions

diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in
index 86352dc9bd2146587a95b7561151b3f84db8021f..193c9bdd8537daa5e471ffbe45b89446dc2f4a99 100644 (file)
--- a/gcc/doc/tm.texi.in
+++ b/gcc/doc/tm.texi.in
@@ -3780,14 +3780,6 @@ These machine description macros help implement varargs:
 
 @hook TARGET_PRETEND_OUTGOING_VARARGS_NAMED
 
-@hook TARGET_LOAD_BOUNDS_FOR_ARG
-
-@hook TARGET_STORE_BOUNDS_FOR_ARG
-
-@hook TARGET_LOAD_RETURNED_BOUNDS
-
-@hook TARGET_STORE_RETURNED_BOUNDS
-
 @node Trampolines
 @section Support for Nested Functions
 @cindex support for nested functions

diff --git a/gcc/target.def b/gcc/target.def
index c5d90cace80d75ef17cd5eddf657db8334f786de..87feeec2ea1259d446bc64459ca4a498a8e07ab8 100644 (file)
--- a/gcc/target.def
+++ b/gcc/target.def
@@ -4730,45 +4730,6 @@ not generate any instructions in this case.",
        int *pretend_args_size, int second_time),
  default_setup_incoming_varargs)
 
-DEFHOOK
-(load_bounds_for_arg,
- "This hook is used by expand pass to emit insn to load bounds of\n\
-@var{arg} passed in @var{slot}.  Expand pass uses this hook in case\n\
-bounds of @var{arg} are not passed in register.  If @var{slot} is a\n\
-memory, then bounds are loaded as for regular pointer loaded from\n\
-memory.  If @var{slot} is not a memory then @var{slot_no} is an integer\n\
-constant holding number of the target dependent special slot which\n\
-should be used to obtain bounds.  Hook returns RTX holding loaded bounds.",
- rtx, (rtx slot, rtx arg, rtx slot_no),
- default_load_bounds_for_arg)
-
-DEFHOOK
-(store_bounds_for_arg,
- "This hook is used by expand pass to emit insns to store @var{bounds} of\n\
-@var{arg} passed in @var{slot}.  Expand pass uses this hook in case\n\
-@var{bounds} of @var{arg} are not passed in register.  If @var{slot} is a\n\
-memory, then @var{bounds} are stored as for regular pointer stored in\n\
-memory.  If @var{slot} is not a memory then @var{slot_no} is an integer\n\
-constant holding number of the target dependent special slot which\n\
-should be used to store @var{bounds}.",
- void, (rtx arg, rtx slot, rtx bounds, rtx slot_no),
- default_store_bounds_for_arg)
-
-DEFHOOK
-(load_returned_bounds,
- "This hook is used by expand pass to emit insn to load bounds\n\
-returned by function call in @var{slot}.  Hook returns RTX holding\n\
-loaded bounds.",
- rtx, (rtx slot),
- default_load_returned_bounds)
-
-DEFHOOK
-(store_returned_bounds,
- "This hook is used by expand pass to emit insn to store @var{bounds}\n\
-returned by function call into @var{slot}.",
- void, (rtx slot, rtx bounds),
- default_store_returned_bounds)
-
 DEFHOOK
 (call_args,
  "While generating RTL for a function call, this target hook is invoked once\n\
@@ -4972,12 +4933,6 @@ The return value is usually either a @code{reg} RTX for the hard\n\
 register in which to pass the argument, or zero to pass the argument\n\
 on the stack.\n\
 \n\
-The return value can be a @code{const_int} which means argument is\n\
-passed in a target specific slot with specified number.  Target hooks\n\
-should be used to store or load argument in such case.  See\n\
-@code{TARGET_STORE_BOUNDS_FOR_ARG} and @code{TARGET_LOAD_BOUNDS_FOR_ARG}\n\
-for more information.\n\
-\n\
 The value of the expression can also be a @code{parallel} RTX@.  This is\n\
 used when an argument is passed in multiple locations.  The mode of the\n\
 @code{parallel} should be the mode of the entire argument.  The\n\

diff --git a/gcc/targhooks.c b/gcc/targhooks.c
index 812bbe3f16e49f7a8e3f4095aaf098ddc4aed2e4..0b525bb460663569f8793ff7c9ad3e253f2caed9 100644 (file)
--- a/gcc/targhooks.c
+++ b/gcc/targhooks.c
@@ -2253,36 +2253,6 @@ default_member_type_forces_blk (const_tree, machine_mode)
   return false;
 }
 
-rtx
-default_load_bounds_for_arg (rtx addr ATTRIBUTE_UNUSED,
-                            rtx ptr ATTRIBUTE_UNUSED,
-                            rtx bnd ATTRIBUTE_UNUSED)
-{
-  gcc_unreachable ();
-}
-
-void
-default_store_bounds_for_arg (rtx val ATTRIBUTE_UNUSED,
-                             rtx addr ATTRIBUTE_UNUSED,
-                             rtx bounds ATTRIBUTE_UNUSED,
-                             rtx to ATTRIBUTE_UNUSED)
-{
-  gcc_unreachable ();
-}
-
-rtx
-default_load_returned_bounds (rtx slot ATTRIBUTE_UNUSED)
-{
-  gcc_unreachable ();
-}
-
-void
-default_store_returned_bounds (rtx slot ATTRIBUTE_UNUSED,
-                              rtx bounds ATTRIBUTE_UNUSED)
-{
-  gcc_unreachable ();
-}
-
 /* Default version of canonicalize_comparison.  */
 
 void

diff --git a/gcc/targhooks.h b/gcc/targhooks.h
index 92d51992e625c2497aa8496b1e2e3d916e5706fd..7f7f25a07e685f707d9c306f760437f178fcb6f6 100644 (file)
--- a/gcc/targhooks.h
+++ b/gcc/targhooks.h
@@ -272,10 +272,6 @@ extern bool can_use_doloop_if_innermost (const widest_int &,
                                         const widest_int &,
                                         unsigned int, bool);
 
-extern rtx default_load_bounds_for_arg (rtx, rtx, rtx);
-extern void default_store_bounds_for_arg (rtx, rtx, rtx, rtx);
-extern rtx default_load_returned_bounds (rtx);
-extern void default_store_returned_bounds (rtx,rtx);
 extern bool default_optab_supported_p (int, machine_mode, machine_mode,
                                       optimization_type);
 extern unsigned int default_max_noce_ifcvt_seq_cost (edge);