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.

1 files changed, 0 insertions, 45 deletions

diff --git a/gcc/target.def b/gcc/target.def
index c5d90ca..87feeec 100644
--- a/gcc/target.def
+++ b/gcc/target.def
@@ -4731,45 +4731,6 @@ not generate any instructions in this case.",
  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\
 for each argument passed to the function, either a register returned by\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\