Convert ACCUMULATE_OUTGOING_ARGS to an expression.

	* calls.c (PUSH_ARGS_REVERSED) Change to expression.
	(ACCUMULATE_OUTGOING_ARGS, PUSH_ARGS): Provide default value.
	(struct arg_data): Remove #ifdef ACCUMULATE_OUTGOING_ARGS.
	(save_fixed_argument_area, restore_fixed_argument_area):
	conditionize by #ifdef REG_PARM_STACK_SPACE only.
	(emit_call): Change #ifdefs on ACCUMULATE_OUTGOING_ARGS
	to conditions, handle RETURN_POPS_ARGS on ACCUMULATE_OUTGOING_ARGS.
	(precompute_register_parameters): Avoid #ifdefs on
	ACCUMULATE_OUTGOING_ARGS and PUSH_ARGS_REVERSED.
	(stire_one_args): Likewise.
	(expand_call): Likewise; conditionize PUSH_ROUNDING code by PUSH_ARGS.
	(emit_library_call_value_1): Likewise.
	(compute_argument_block_size): Align to STACK_BOUNDARY only for
	ACCUMULATE_OUTGOING_ARGS.
	* combine.c (ACCUMULATE_OUTGOING_ARGS, PUSH_ARGS): Provide default
	value.
	(nonzero_bits): Conditionize PUSH_ROUNDING code by USE_PUSH.
	(use_crosses_set_p): Likewise.
	* all targets (ACCUMULATE_OUTGOING_ARGS define): Change to
	#define ACCUMULATE_OUTGOING_ARGS 1.
	* i386.c (ix86_compute_frame_size): Handle ACCUMULATE_OUTGOING_ARGS
	frames.
	* i386.h (MASK_NO_PUSH_ARGS, MASK_ACCUMULATE_OUTGOING_ARGS): New
	constants.
	(TARGET_PUSH_ARGS, TARGET_ACCUMULATE_OUTGOING_ARGS): New macros.
	(TARGET_SWITCHES): Add push-args, no-push-args,
	accumulate-outgoing-args and no-accumulate-outgoing-args.
	(ACCUMULATE_OUTGOING_ARGS, PUSH_ARGS): New macro.
	* expr.c (ACCUMULATE_OUTGONG_ARGS, PUSH_ARGS): Provide default.
	(push_block): Avoid ifdefs on ACCUMULATE_OUTGONG_ARGS
	and PUSH_ROUNDING.
	(emit_push_insn): Likewise.
	* final.c (ACCUMULATE_OUTGOING_ARGS): Provide default.
	(final_scan_insn): Avoid ifdefs on ACCUMULATE_OUTGOING_ARGS.
	* function.c (ACCUMULATE_OUTGOING_ARGS): Provide default.
	(STACK_DYNAMIC_OFFSET): Define correctly for both
	ACCUMULATE_OUTGOING_ARGS and normal mode.
	* invoke.texi (-mpush_args, -maccumulate-outgoing-args): Document.
	* tm.texi (PUSH_ARGS): Document.
	(ACCUMULATE_OUTGOING_ARGS, PUSH_ROUNDING): Update documentation.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@32803 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 9 insertions, 8 deletions

diff --git a/gcc/function.c b/gcc/function.c
index 2de8ec105da..0ec9e61a193 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -61,6 +61,10 @@ Boston, MA 02111-1307, USA.  */
 #include "ggc.h"
 #include "tm_p.h"
 
+#ifndef ACCUMULATE_OUTGOING_ARGS
+#define ACCUMULATE_OUTGOING_ARGS 0
+#endif
+
 #ifndef TRAMPOLINE_ALIGNMENT
 #define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY
 #endif
@@ -2738,7 +2742,6 @@ static int cfa_offset;
 
 #ifndef STACK_DYNAMIC_OFFSET
 
-#ifdef ACCUMULATE_OUTGOING_ARGS
 /* The bottom of the stack points to the actual arguments.  If
    REG_PARM_STACK_SPACE is defined, this includes the space for the register
    parameters.  However, if OUTGOING_REG_PARM_STACK space is not defined,
@@ -2749,16 +2752,14 @@ static int cfa_offset;
 
 #if defined(REG_PARM_STACK_SPACE) && ! defined(OUTGOING_REG_PARM_STACK_SPACE)
 #define STACK_DYNAMIC_OFFSET(FNDECL)	\
-(current_function_outgoing_args_size	\
- + REG_PARM_STACK_SPACE (FNDECL) + (STACK_POINTER_OFFSET))
+((ACCUMULATE_OUTGOING_ARGS						      \
+  ? (current_function_outgoing_args_size + REG_PARM_STACK_SPACE (FNDECL)) : 0)\
+ + (STACK_POINTER_OFFSET))						      \
 
 #else
 #define STACK_DYNAMIC_OFFSET(FNDECL)	\
-(current_function_outgoing_args_size + (STACK_POINTER_OFFSET))
-#endif
-
-#else
-#define STACK_DYNAMIC_OFFSET(FNDECL) STACK_POINTER_OFFSET
+((ACCUMULATE_OUTGOING_ARGS ? current_function_outgoing_args_size : 0)	      \
+ + (STACK_POINTER_OFFSET))
 #endif
 #endif