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.

From-SVN: r32803

1 files changed, 21 insertions, 13 deletions

diff --git a/gcc/final.c b/gcc/final.c
index 5693d46..34db2ae 100644
--- a/gcc/final.c
+++ b/gcc/final.c
@@ -80,6 +80,10 @@ Boston, MA 02111-1307, USA.  */
 
 #endif /* DBX_DEBUGGING_INFO || XCOFF_DEBUGGING_INFO */
 
+#ifndef ACCUMULATE_OUTGOING_ARGS
+#define ACCUMULATE_OUTGOING_ARGS 0
+#endif
+
 #ifdef XCOFF_DEBUGGING_INFO
 #include "xcoffout.h"
 #endif
@@ -2279,10 +2283,10 @@ final_scan_insn (insn, file, optimize, prescan, nopeepholes)
       break;
 
     case BARRIER:
-#if defined (DWARF2_UNWIND_INFO) && !defined (ACCUMULATE_OUTGOING_ARGS)
+#if defined (DWARF2_UNWIND_INFO)
 	/* If we push arguments, we need to check all insns for stack
 	   adjustments.  */
-	if (dwarf2out_do_frame ())
+	if (!ACCUMULATE_OUTGOING_ARGS && dwarf2out_do_frame ())
 	  dwarf2out_frame_debug (insn);
 #endif
       break;
@@ -2885,9 +2889,10 @@ final_scan_insn (insn, file, optimize, prescan, nopeepholes)
 
 	debug_insn = insn;
 
-#if defined (DWARF2_UNWIND_INFO) && !defined (ACCUMULATE_OUTGOING_ARGS)
+#if defined (DWARF2_UNWIND_INFO)
 	/* If we push arguments, we want to know where the calls are.  */
-	if (GET_CODE (insn) == CALL_INSN && dwarf2out_do_frame ())
+	if (!ACCUMULATE_OUTGOING_ARGS && GET_CODE (insn) == CALL_INSN
+	    && dwarf2out_do_frame ())
 	  dwarf2out_frame_debug (insn);
 #endif
 
@@ -2934,19 +2939,22 @@ final_scan_insn (insn, file, optimize, prescan, nopeepholes)
 	output_asm_insn (template, recog_data.operand);
 
 #if defined (DWARF2_UNWIND_INFO)
-#if !defined (ACCUMULATE_OUTGOING_ARGS)
 	/* If we push arguments, we need to check all insns for stack
 	   adjustments.  */
-	if (GET_CODE (insn) == INSN && dwarf2out_do_frame ())
-	  dwarf2out_frame_debug (insn);
-#else
+	if (!ACCUMULATE_OUTGOING_ARGS)
+	  {
+	    if (GET_CODE (insn) == INSN && dwarf2out_do_frame ())
+	      dwarf2out_frame_debug (insn);
+	  }
+	else
+	  {
 #if defined (HAVE_prologue)
-	/* If this insn is part of the prologue, emit DWARF v2
-	   call frame info.  */
-	if (RTX_FRAME_RELATED_P (insn) && dwarf2out_do_frame ())
-	  dwarf2out_frame_debug (insn);
-#endif
+	    /* If this insn is part of the prologue, emit DWARF v2
+	       call frame info.  */
+	    if (RTX_FRAME_RELATED_P (insn) && dwarf2out_do_frame ())
+	      dwarf2out_frame_debug (insn);
 #endif
+	  }
 #endif
 
 #if 0