abort in verify_wide_reg_1(), in 2.96 20000502, simple test case

[Richard Henderson]

On Wed, May 03, 2000 at 09:29:35PM -0700, Jason R Thorpe wrote:
> In the process of testing my new NetBSD/i386 ELF configuration (mostly
> vanilla ELF i386) for GCC 2.96 20000502, I ran across an abort in
> verify_wide_reg_1() when the NetBSD source tree build was building OpenSSL.

Fixed thus.


r~


        * ifcvt.c (noce_process_if_block): Always reset X in the A == B case.

Index: ifcvt.c
===================================================================
RCS file: /cvs/gcc/egcs/gcc/ifcvt.c,v
retrieving revision 1.9
diff -c -p -d -r1.9 ifcvt.c
*** ifcvt.c	2000/05/04 23:22:26	1.9
--- ifcvt.c	2000/05/04 23:23:20
*************** noce_process_if_block (test_bb, then_bb,
*** 1139,1146 ****
  	    else_bb->end = PREV_INSN (insn_b);
  	  reorder_insns (insn_b, insn_b, PREV_INSN (if_info.cond_earliest));
  	  insn_b = NULL_RTX;
- 	  x = orig_x;
  	}
        goto success;
      }
  
--- 1139,1146 ----
  	    else_bb->end = PREV_INSN (insn_b);
  	  reorder_insns (insn_b, insn_b, PREV_INSN (if_info.cond_earliest));
  	  insn_b = NULL_RTX;
  	}
+       x = orig_x;
        goto success;
      }