re PR rtl-optimization/5892 (ICE in gen_nop_type during 2.4.17 ia64 kernel build)

	PR optimization/5892
	* config/ia64/ia64.c (rotate_one_bundle): Update current packet.

	* gcc.c-torture/compile/20020312-1.c: New test.

From-SVN: r50723

gcc/ChangeLog

+2002-03-12  Jakub Jelinek  <jakub@redhat.com>
+
+	PR optimization/5892
+	* config/ia64/ia64.c (rotate_one_bundle): Update current packet.
+
 2002-03-13  Jakub Jelinek  <jakub@redhat.com>
 
 	* loop.c (basic_induction_var): Don't call convert_modes if mode

gcc/config/ia64/ia64.c

@@ -5632,6 +5632,8 @@ rotate_one_bundle (dump)
       memmove (sched_data.insns,
 	       sched_data.insns + 3,
 	       sched_data.cur * sizeof *sched_data.insns);
+      sched_data.packet
+	= &packets[(sched_data.packet->t2 - bundle) * NR_BUNDLES];
     }
   else
     {

gcc/testsuite/ChangeLog

@@ -2,6 +2,8 @@
 
 	* gcc.c-torture/compile/20020309-2.c: New test.
 
+	* gcc.c-torture/compile/20020312-1.c: New test.
+
 2002-03-12  Nathan Sidwell  <nathan@codesourcery.com>
 
 	* g++.dg/other/access1.C: New test.

gcc/testsuite/gcc.c-torture/compile/20020312-1.c

+/* PR optimization/5892 */
+typedef struct { unsigned long a; unsigned int b, c; } A;
+typedef struct { unsigned long a; A *b; int c; } B;
+
+static inline unsigned int
+bar (unsigned int x)
+{
+  unsigned long r;
+  asm ("" : "=r" (r) : "0" (x));
+  return r >> 31;
+}
+
+int foo (B *x)
+{
+  A *y;
+  y = x->b;
+  y->b = bar (x->c);
+  y->c = ({ unsigned int z = 1; (z << 24) | (z >> 24); });
+}