[Bug tree-optimization/17531] [4.0 Regression] [ivopts] ICE compiling gzip deflate.c

["rakdver at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From rakdver at gcc dot gnu dot org  2004-09-17 09:09 -------
This patch should fix the problem; I will submit it once it passes regtesting.

Zdenek

Index: optabs.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/optabs.c,v
retrieving revision 1.241
diff -c -3 -p -r1.241 optabs.c
*** optabs.c	10 Sep 2004 11:02:24 -0000	1.241
--- optabs.c	17 Sep 2004 09:05:40 -0000
*************** expand_binop (enum machine_mode mode, op
*** 738,748 ****
       force expensive constants into a register.  */
    if (CONSTANT_P (op0) && optimize
        && rtx_cost (op0, binoptab->code) > COSTS_N_INSNS (1))
!     op0 = force_reg (mode, op0);
  
    if (CONSTANT_P (op1) && optimize
        && ! shift_op && rtx_cost (op1, binoptab->code) > COSTS_N_INSNS (1))
!     op1 = force_reg (mode, op1);
  
    /* Record where to delete back to if we backtrack.  */
    last = get_last_insn ();
--- 738,756 ----
       force expensive constants into a register.  */
    if (CONSTANT_P (op0) && optimize
        && rtx_cost (op0, binoptab->code) > COSTS_N_INSNS (1))
!     {
!       if (GET_MODE (op0) != VOIDmode)
! 	op0 = convert_modes (mode, VOIDmode, op0, unsignedp);
!       op0 = force_reg (mode, op0);
!     }
  
    if (CONSTANT_P (op1) && optimize
        && ! shift_op && rtx_cost (op1, binoptab->code) > COSTS_N_INSNS (1))
!     {
!       if (GET_MODE (op1) != VOIDmode)
! 	op1 = convert_modes (mode, VOIDmode, op1, unsignedp);
!       op1 = force_reg (mode, op1);
!     }
  
    /* Record where to delete back to if we backtrack.  */
    last = get_last_insn ();




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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17531