* 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.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@53245 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 23 insertions, 9 deletions

diff --git a/gcc/rtl.c b/gcc/rtl.c
index b7ae4452dc4..ad0bc53694d 100644
--- a/gcc/rtl.c
+++ b/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 */