re PR other/6782 (Specifing "-fverbose-asm" option throws ICE.)

	PR other/6782
	* final.c (get_mem_expr_from_op): Return 0 if op is NULL.

	* gcc.dg/verbose-asm.c: New test.

From-SVN: r53856

gcc/ChangeLog

+2002-05-24  Jakub Jelinek  <jakub@redhat.com>
+
+	PR other/6782
+	* final.c (get_mem_expr_from_op): Return 0 if op is NULL.
+
 2002-05-24  Neil Booth  <neil@daikokuya.demon.co.uk>
 
 	PR preprocessor/6780

gcc/final.c

@@ -3171,6 +3171,9 @@ get_mem_expr_from_op (op, paddressp)
 
   *paddressp = 0;
 
+  if (op == NULL)
+    return 0;
+
   if (GET_CODE (op) == REG && ORIGINAL_REGNO (op) >= FIRST_PSEUDO_REGISTER)
     return REGNO_DECL (ORIGINAL_REGNO (op));
   else if (GET_CODE (op) != MEM)

gcc/testsuite/ChangeLog

+2002-05-24  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.dg/verbose-asm.c: New test.
+
 2002-05-24  Neil Booth  <neil@daikokuya.demon.co.uk>
 
 	* gcc.dg/cpp/paste12.c: New test.

gcc/testsuite/gcc.dg/verbose-asm.c

+/* Test whether -fverbose-asm works.  */
+/* { dg-do compile } */
+/* { dg-options "-fverbose-asm" } */
+
+void foo (int *x)
+{
+  (*x)++;
+}
+
+int bar (int *y)
+{
+  int a, b;
+  b = 10;
+  a = 26;
+  foo (&a);
+  a += 10;
+  foo (&a);
+  *y--;
+  return b;
+}
+   
+int
+main (int argc, char *argv [])
+{
+  bar (&argc);
+  return 0;
+}