rtl.h (struct rtx_def): Update comments.

	* rtl.h (struct rtx_def): Update comments.
	(RTL_FLAG_CHECK[12345678]): New.  (rtl_check_failed_flag): Declare.
	(RTL_FLAG): New.  (CLEAR_RTX_FLAGS): New.  (flag access macros): Use
	RTL_FLAG_CHECK macros with list of expected RTL codes.
	* rtl.c (copy_rtx, shallow_copy_rtx): Use RTX_FLAG macro.
	(rtl_check_failed_flag): New.
	* reload1.c (reload): Use REG macro before changing rtx to MEM.
	(reload_cse_noop_set_p): Check rtx code before using access macro.
	* config/ia64/ia64.c (process_for_unwind_directive): Check rtx code
	before using access macro.

From-SVN: r53245

gcc/ChangeLog

 2002-05-06  Janis Johnson  <janis187@us.ibm.com>
 
+	* rtl.h (struct rtx_def): Update comments.
+	(RTL_FLAG_CHECK[12345678]): New.  (rtl_check_failed_flag): Declare.
+	(RTL_FLAG): New.  (CLEAR_RTX_FLAGS): New.  (flag access macros): Use
+	RTL_FLAG_CHECK macros with list of expected RTL codes.
+	* rtl.c (copy_rtx, shallow_copy_rtx): Use RTX_FLAG macro.
+	(rtl_check_failed_flag): New.
+	* reload1.c (reload): Use REG macro before changing rtx to MEM.
+	(reload_cse_noop_set_p): Check rtx code before using access macro.
+	* config/ia64/ia64.c (process_for_unwind_directive): Check rtx code
+	before using access macro.
+
+2002-05-06  Janis Johnson  <janis187@us.ibm.com>
+
 	* doc/rtl.texi (Flags): Update to reflect current usage.
 
 2002-05-06  Roger Sayle  <roger@eyesopen.com>

gcc/config/ia64/ia64.c

@@ -7225,7 +7225,7 @@ process_for_unwind_directive (asm_out_file, insn)
 	    }
 	}
 
-      if (! RTX_FRAME_RELATED_P (insn))
+      if (GET_CODE (insn) == NOTE || ! RTX_FRAME_RELATED_P (insn))
 	return;
 
       pat = find_reg_note (insn, REG_FRAME_RELATED_EXPR, NULL_RTX);

gcc/reload1.c

@@ -1160,9 +1160,9 @@ reload (first, global)
 	    {
 	      rtx reg = regno_reg_rtx[i];
 
+	      REG_USERVAR_P (reg) = 0;
 	      PUT_CODE (reg, MEM);
 	      XEXP (reg, 0) = addr;
-	      REG_USERVAR_P (reg) = 0;
 	      if (reg_equiv_memory_loc[i])
 		MEM_COPY_ATTRIBUTES (reg, reg_equiv_memory_loc[i]);
 	      else
@@ -8079,7 +8079,8 @@ reload_cse_simplify (insn)
       if (!count && reload_cse_noop_set_p (body))
 	{
 	  rtx value = SET_DEST (body);
-	  if (! REG_FUNCTION_VALUE_P (SET_DEST (body)))
+	  if (GET_CODE (body) == REG
+	      && ! REG_FUNCTION_VALUE_P (SET_DEST (body)))
 	    value = 0;
 	  reload_cse_delete_noop_set (insn, value);
 	  return;

gcc/rtl.c

@@ -331,13 +331,13 @@ copy_rtx (orig)
 
   /* We do not copy the USED flag, which is used as a mark bit during
      walks over the RTL.  */
-  copy->used = 0;
+  RTX_FLAG (copy, used) = 0;
 
   /* We do not copy FRAME_RELATED for INSNs.  */
   if (GET_RTX_CLASS (code) == 'i')
-    copy->frame_related = 0;
-  copy->jump = orig->jump;
-  copy->call = orig->call;
+    RTX_FLAG (copy, frame_related) = 0;
+  RTX_FLAG (copy, jump) = RTX_FLAG (orig, jump);
+  RTX_FLAG (copy, call) = RTX_FLAG (orig, call);
 
   format_ptr = GET_RTX_FORMAT (GET_CODE (copy));
 
@@ -390,11 +390,11 @@ shallow_copy_rtx (orig)
   rtx copy = rtx_alloc (code);
 
   PUT_MODE (copy, GET_MODE (orig));
-  copy->in_struct = orig->in_struct;
-  copy->volatil = orig->volatil;
-  copy->unchanging = orig->unchanging;
-  copy->integrated = orig->integrated;
-  copy->frame_related = orig->frame_related;
+  RTX_FLAG (copy, in_struct) = RTX_FLAG (orig, in_struct);
+  RTX_FLAG (copy, volatil) = RTX_FLAG (orig, volatil);
+  RTX_FLAG (copy, unchanging) = RTX_FLAG (orig, unchanging);
+  RTX_FLAG (copy, integrated) = RTX_FLAG (orig, integrated);
+  RTX_FLAG (copy, frame_related) = RTX_FLAG (orig, frame_related);
 
   for (i = 0; i < GET_RTX_LENGTH (code); i++)
     copy->fld[i] = orig->fld[i];
@@ -637,3 +637,17 @@ rtvec_check_failed_bounds (r, n, file, line, func)
      n, GET_NUM_ELEM (r) - 1, func, trim_filename (file), line);
 }
 #endif /* ENABLE_RTL_CHECKING */
+
+#if defined ENABLE_RTL_FLAG_CHECKING
+void
+rtl_check_failed_flag (r, file, line, func)
+    rtx r;
+    const char *file;
+    int line;
+    const char *func;
+{
+  internal_error
+    ("RTL flag check: access macro used with unexpected rtx code `%s' in %s, at %s:%d",
+     GET_RTX_NAME (GET_CODE (r)), func, trim_filename (file), line);
+}
+#endif /* ENABLE_RTL_FLAG_CHECKING */