re PR c++/4512 (New ICE in loop_iterations at unroll.c:3510, regression vs. 3.0.1)

	2001-10-10  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

	PR c++/4512
	* unroll.c (loop_iterations): Ignore insns generated by loop
	unrolling.

From-SVN: r46153

gcc/ChangeLog

 2001-10-10  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>
 
+	PR c++/4512
+	* unroll.c (loop_iterations): Ignore insns generated by loop
+	unrolling.
+
 	* config.gcc (mips*-*-gnu*): Delete support.
 	* config/mips/gnu.h: Remove.
 

gcc/unroll.c

@@ -3527,6 +3527,11 @@ loop_iterations (loop)
 
       do
 	{
+	  /* Previous unrolling may have generated new insns not covered
+	     by the uid_luid array.  */
+	  if (INSN_UID (temp) >= max_uid_for_loop)
+	    continue;
+
 	  if (GET_CODE (temp) == JUMP_INSN
 	      && INSN_LUID (JUMP_LABEL (temp)) > INSN_LUID (loop->top)
 	      && INSN_LUID (JUMP_LABEL (temp)) < INSN_LUID (loop->cont))