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calls.c (emit_call_1): New arg rounded_stack_size; update callers.
* calls.c (emit_call_1): New arg rounded_stack_size; update callers.
Update pending_stack_adjust based on this value.
(compute_argument_block_size): Include pending_stack_adjust in
PREFERRED_STACK_BOUNDARY alignment.
* function.c (assign_parms): Don't round to PREFERRED_STACK_BOUNDARY.
From-SVN: r26623
This commit is contained in:
Richard Henderson
Richard Henderson
parent
ed856f4c70
commit
fb5eebb932
@ -1,3 +1,11 @@
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Sun Apr 25 12:30:50 1999 Richard Henderson <rth@cygnus.com>
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* calls.c (emit_call_1): New arg rounded_stack_size; update callers.
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Update pending_stack_adjust based on this value.
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(compute_argument_block_size): Include pending_stack_adjust in
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PREFERRED_STACK_BOUNDARY alignment.
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* function.c (assign_parms): Don't round to PREFERRED_STACK_BOUNDARY.
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Sun Apr 25 14:38:10 EDT 1999 John Wehle (john@feith.com)
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* stupid.c (stupid_mark_refs): Generate a REG_UNUSED note
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45
gcc/calls.c
45
gcc/calls.c
@ -127,8 +127,8 @@ int stack_arg_under_construction;
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static int calls_function PROTO ((tree, int));
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static int calls_function_1 PROTO ((tree, int));
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static void emit_call_1 PROTO ((rtx, tree, tree, HOST_WIDE_INT,
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HOST_WIDE_INT, rtx, rtx,
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int, rtx, int));
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HOST_WIDE_INT, HOST_WIDE_INT, rtx,
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rtx, int, rtx, int));
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static void special_function_p PROTO ((char *, tree, int *, int *,
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int *, int *));
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static void precompute_register_parameters PROTO ((int, struct arg_data *,
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@ -374,13 +374,14 @@ prepare_call_address (funexp, fndecl, call_fusage, reg_parm_seen)
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IS_CONST is true if this is a `const' call. */
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static void
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emit_call_1 (funexp, fndecl, funtype, stack_size, struct_value_size,
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next_arg_reg, valreg, old_inhibit_defer_pop, call_fusage,
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is_const)
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emit_call_1 (funexp, fndecl, funtype, stack_size, rounded_stack_size,
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struct_value_size, next_arg_reg, valreg, old_inhibit_defer_pop,
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call_fusage, is_const)
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rtx funexp;
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tree fndecl ATTRIBUTE_UNUSED;
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tree funtype ATTRIBUTE_UNUSED;
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HOST_WIDE_INT stack_size;
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HOST_WIDE_INT rounded_stack_size;
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HOST_WIDE_INT struct_value_size;
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rtx next_arg_reg;
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rtx valreg;
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@ -393,6 +394,7 @@ emit_call_1 (funexp, fndecl, funtype, stack_size, struct_value_size,
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rtx call_insn;
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#ifndef ACCUMULATE_OUTGOING_ARGS
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int already_popped = 0;
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HOST_WIDE_INT n_popped = RETURN_POPS_ARGS (fndecl, funtype, stack_size);
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#endif
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/* Ensure address is valid. SYMBOL_REF is already valid, so no need,
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@ -403,11 +405,9 @@ emit_call_1 (funexp, fndecl, funtype, stack_size, struct_value_size,
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#ifndef ACCUMULATE_OUTGOING_ARGS
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#if defined (HAVE_call_pop) && defined (HAVE_call_value_pop)
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if (HAVE_call_pop && HAVE_call_value_pop
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&& (RETURN_POPS_ARGS (fndecl, funtype, stack_size) > 0
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|| stack_size == 0))
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if (HAVE_call_pop && HAVE_call_value_pop && n_popped > 0)
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{
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rtx n_pop = GEN_INT (RETURN_POPS_ARGS (fndecl, funtype, stack_size));
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rtx n_pop = GEN_INT (n_popped);
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rtx pat;
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/* If this subroutine pops its own args, record that in the call insn
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@ -485,23 +485,23 @@ emit_call_1 (funexp, fndecl, funtype, stack_size, struct_value_size,
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If returning from the subroutine does pop the args, indicate that the
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stack pointer will be changed. */
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if (stack_size != 0 && RETURN_POPS_ARGS (fndecl, funtype, stack_size) > 0)
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if (n_popped > 0)
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{
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if (!already_popped)
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CALL_INSN_FUNCTION_USAGE (call_insn)
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= gen_rtx_EXPR_LIST (VOIDmode,
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gen_rtx_CLOBBER (VOIDmode, stack_pointer_rtx),
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CALL_INSN_FUNCTION_USAGE (call_insn));
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stack_size -= RETURN_POPS_ARGS (fndecl, funtype, stack_size);
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stack_size_rtx = GEN_INT (stack_size);
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stack_size -= n_popped;
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rounded_stack_size -= n_popped;
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}
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if (stack_size != 0)
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if (rounded_stack_size != 0)
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{
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if (flag_defer_pop && inhibit_defer_pop == 0 && !is_const)
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pending_stack_adjust += stack_size;
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pending_stack_adjust += rounded_stack_size;
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else
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adjust_stack (stack_size_rtx);
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adjust_stack (GEN_INT (rounded_stack_size));
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}
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#endif
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}
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@ -1168,8 +1168,11 @@ compute_argument_block_size (reg_parm_stack_space, args_size)
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else
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{
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#ifdef PREFERRED_STACK_BOUNDARY
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args_size->constant = (((args_size->constant + (STACK_BYTES - 1))
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/ STACK_BYTES) * STACK_BYTES);
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args_size->constant = (((args_size->constant
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+ pending_stack_adjust
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+ STACK_BYTES - 1)
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/ STACK_BYTES * STACK_BYTES)
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- pending_stack_adjust);
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#endif
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args_size->constant = MAX (args_size->constant,
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@ -2272,7 +2275,8 @@ expand_call (exp, target, ignore)
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/* All arguments and registers used for the call must be set up by now! */
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/* Generate the actual call instruction. */
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emit_call_1 (funexp, fndecl, funtype, args_size.constant, struct_value_size,
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emit_call_1 (funexp, fndecl, funtype, unadjusted_args_size,
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args_size.constant, struct_value_size,
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FUNCTION_ARG (args_so_far, VOIDmode, void_type_node, 1),
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valreg, old_inhibit_defer_pop, call_fusage, is_const);
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@ -2957,7 +2961,7 @@ emit_library_call VPROTO((rtx orgfun, int no_queue, enum machine_mode outmode,
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get_identifier (XSTR (orgfun, 0)),
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build_function_type (outmode == VOIDmode ? void_type_node
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: type_for_mode (outmode, 0), NULL_TREE),
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args_size.constant, 0,
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original_args_size.constant, args_size.constant, 0,
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FUNCTION_ARG (args_so_far, VOIDmode, void_type_node, 1),
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outmode != VOIDmode ? hard_libcall_value (outmode) : NULL_RTX,
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old_inhibit_defer_pop + 1, call_fusage, no_queue);
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@ -3530,7 +3534,8 @@ emit_library_call_value VPROTO((rtx orgfun, rtx value, int no_queue,
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emit_call_1 (fun,
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get_identifier (XSTR (orgfun, 0)),
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build_function_type (type_for_mode (outmode, 0), NULL_TREE),
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args_size.constant, struct_value_size,
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original_args_size.constant, args_size.constant,
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struct_value_size,
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FUNCTION_ARG (args_so_far, VOIDmode, void_type_node, 1),
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mem_value == 0 ? hard_libcall_value (outmode) : NULL_RTX,
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old_inhibit_defer_pop + 1, call_fusage, is_const);
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@ -58,10 +58,6 @@ Boston, MA 02111-1307, USA. */
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#include "toplev.h"
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#include "hash.h"
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#if !defined PREFERRED_STACK_BOUNDARY && defined STACK_BOUNDARY
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#define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
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#endif
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#ifndef TRAMPOLINE_ALIGNMENT
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#define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY
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#endif
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@ -5063,14 +5059,6 @@ assign_parms (fndecl, second_time)
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#endif
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#endif
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#ifdef PREFERRED_STACK_BOUNDARY
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#define STACK_BYTES (PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT)
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current_function_args_size
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= ((current_function_args_size + STACK_BYTES - 1)
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/ STACK_BYTES) * STACK_BYTES;
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#endif
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#ifdef ARGS_GROW_DOWNWARD
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current_function_arg_offset_rtx
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= (stack_args_size.var == 0 ? GEN_INT (-stack_args_size.constant)
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