* local-alloc.c (update_equiv_regs): When substituting sole definition
	into sole use of a reg, delete it from liveness information.

Index: local-alloc.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/local-alloc.c,v
retrieving revision 1.147
diff -c -p -r1.147 local-alloc.c
*** local-alloc.c	28 Apr 2005 05:38:32 -0000	1.147
--- local-alloc.c	2 Jun 2005 08:51:59 -0000
*************** update_equiv_regs (void)
*** 991,997 ****
  
    /* Now scan all regs killed in an insn to see if any of them are
       registers only used that once.  If so, see if we can replace the
!      reference with the equivalent from.  If we can, delete the
       initializing reference and this register will go away.  If we
       can't replace the reference, and the initializing reference is
       within the same loop (or in an inner loop), then move the register
--- 991,997 ----
  
    /* Now scan all regs killed in an insn to see if any of them are
       registers only used that once.  If so, see if we can replace the
!      reference with the equivalent form.  If we can, delete the
       initializing reference and this register will go away.  If we
       can't replace the reference, and the initializing reference is
       within the same loop (or in an inner loop), then move the register
*************** update_equiv_regs (void)
*** 1077,1082 ****
--- 1077,1087 ----
  
  		      reg_equiv[regno].init_insns
  			= XEXP (reg_equiv[regno].init_insns, 1);
+ 
+ 		      /* Remember to clear REGNO from all basic block's live
+ 			 info.  */
+ 		      SET_REGNO_REG_SET (&cleared_regs, regno);
+ 		      clear_regnos++;
  		    }
  		  /* Move the initialization of the register to just before
  		     INSN.  Update the flow information.  */