arm.c: Include "ggc.h".

* arm.c: Include "ggc.h".
(arm_add_gc_roots): New function.
(arm_override_options): Call it.
(aof_pic_entry): Add a GC root for aof_pic_label when it's allocated.

* arm.md (define_asm_attributes): Add a pool_range attribute.

From-SVN: r29235

gcc/ChangeLog

+Thu Sep  9 15:24:59 BST 1999  Richard Earnshaw <rearnsha@arm.com>
+
+	* arm.c: Include "ggc.h".
+	(arm_add_gc_roots): New function.
+	(arm_override_options): Call it.
+	(aof_pic_entry): Add a GC root for aof_pic_label when it's allocated.
+
+	* arm.md (define_asm_attributes): Add a pool_range attribute.
+
 Thu Sep  9 12:32:57 BST 1999  Nathan Sidwell  <nathan@acm.org>
 
 	* extend.texi (Volatiles): New node.

gcc/config/arm/arm.c

@@ -39,6 +39,7 @@ Boston, MA 02111-1307, USA.  */
 #include "expr.h"
 #include "toplev.h"
 #include "recog.h"
+#include "ggc.h"
 
 /* The maximum number of insns skipped which will be conditionalised if
    possible.  */
@@ -72,6 +73,7 @@ static void emit_multi_reg_push PROTO ((int));
 static void emit_sfm PROTO ((int, int));
 static enum arm_cond_code get_arm_condition_code PROTO ((rtx));
 static int const_ok_for_op RTX_CODE_PROTO ((HOST_WIDE_INT, Rcode));
+static void arm_add_gc_roots PROTO ((void));
 
 /* True if we are currently building a constant table. */
 int making_const_table;
@@ -585,7 +587,20 @@ arm_override_options ()
     max_insns_skipped = 6;
   else if (arm_is_strong)
     max_insns_skipped = 3;
+
+  /* Register global variables with the garbage collector.  */
+  arm_add_gc_roots ();
+}
+
+static void
+arm_add_gc_roots ()
+{
+  ggc_add_rtx_root (&arm_compare_op0, 1);
+  ggc_add_rtx_root (&arm_compare_op1, 1);
+  ggc_add_rtx_root (&arm_target_insn, 1); /* Not sure this is really a root */
+  /* XXX: What about the minipool tables?  */
 }
+
 
 /* Return 1 if it is possible to return using a single instruction */
 
@@ -6725,6 +6740,10 @@ aof_pic_entry (x)
 
   if (aof_pic_label == NULL_RTX)
     {
+      /* We mark this here and not in arm_add_gc_roots() to avoid
+	 polluting even more code with ifdefs, and because it never
+	 contains anything useful until we assign to it here.  */
+      ggc_add_rtx_root (&aof_pic_label, 1);
       /* This needs to persist throughout the compilation.  */
       end_temporary_allocation ();
       aof_pic_label = gen_rtx_SYMBOL_REF (Pmode, "x$adcons");

gcc/config/arm/arm.md

@@ -62,9 +62,12 @@
 (define_attr "pool_range" "" (const_int 0))
 
 ; An assembler sequence may clobber the condition codes without us knowing
+; If such an insn references the pool, then we have no way of knowing how,
+; so use the most conservative value for pool_range.
 (define_asm_attributes
  [(set_attr "conds" "clob")
-  (set_attr "length" "4")])
+  (set_attr "length" "4")
+  (set_attr "pool_range" "250")])
 
 ; TYPE attribute is used to detect floating point instructions which, if
 ; running on a co-processor can run in parallel with other, basic instructions