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File nov415378.diff of Package gcc41

Index: gcc/testsuite/gcc.c-torture/compile/20080805-1.c
===================================================================
*** /dev/null	1970-01-01 00:00:00.000000000 +0000
--- gcc/testsuite/gcc.c-torture/compile/20080805-1.c	2008-08-06 08:43:04.000000000 +0200
***************
*** 0 ****
--- 1,33 ----
+ int gl2;
+ typedef __SIZE_TYPE__ size_t;
+ 
+ extern void *memcpy (void *dest, const void *src, size_t n);
+ 
+ void
+ f1 ()
+ {
+   int i2;
+   unsigned char bf[64 * 1024 + 4];
+ 
+   for (i2 = 0; i2 < 3; i2++)
+     {
+       unsigned char *p2 = bf;
+       unsigned char *p3 = ((void *) 0);
+       unsigned short ctf2;
+ 
+       p2 += sizeof (short);
+ 
+       for (ctf2 = 0; ctf2 < 3; ctf2++)
+ 	{
+ 	  if (ctf2 == 1)
+ 	    {
+ 	      unsigned short of = p2 - bf - 6;
+ 	      unsigned short *ofp = (unsigned short *) &of;
+ 	      memcpy (p3, ofp, sizeof (short));
+ 	    }
+ 
+ 	  if (gl2 == 1)
+ 	    p2 += 3;
+ 	}
+     }
+ }
Index: gcc/reload.c
===================================================================
*** gcc/reload.c.orig	2008-08-06 08:42:35.000000000 +0200
--- gcc/reload.c	2008-08-06 08:47:48.000000000 +0200
*************** find_reloads (rtx insn, int replace, int
*** 3824,3870 ****
  	     ? RELOAD_FOR_INSN : RELOAD_OTHER);
      }
  
!   /* Any constants that aren't allowed and can't be reloaded
!      into registers are here changed into memory references.  */
!   for (i = 0; i < noperands; i++)
!     if (! goal_alternative_win[i]
! 	&& CONST_POOL_OK_P (recog_data.operand[i])
! 	&& ((PREFERRED_RELOAD_CLASS (recog_data.operand[i],
! 				     (enum reg_class) goal_alternative[i])
! 	     == NO_REGS)
! 	    || no_input_reloads)
! 	&& operand_mode[i] != VOIDmode)
!       {
! 	substed_operand[i] = recog_data.operand[i]
! 	  = find_reloads_toplev (force_const_mem (operand_mode[i],
! 						  recog_data.operand[i]),
! 				 i, address_type[i], ind_levels, 0, insn,
! 				 NULL);
! 	if (alternative_allows_memconst (recog_data.constraints[i],
  					 goal_alternative_number))
! 	  goal_alternative_win[i] = 1;
!       }
! 
!   /* Likewise any invalid constants appearing as operand of a PLUS
!      that is to be reloaded.  */
!   for (i = 0; i < noperands; i++)
!     if (! goal_alternative_win[i]
! 	&& GET_CODE (recog_data.operand[i]) == PLUS
! 	&& CONST_POOL_OK_P (XEXP (recog_data.operand[i], 1))
! 	&& (PREFERRED_RELOAD_CLASS (XEXP (recog_data.operand[i], 1),
! 				    (enum reg_class) goal_alternative[i])
! 	     == NO_REGS)
! 	&& operand_mode[i] != VOIDmode)
!       {
! 	rtx tem = force_const_mem (operand_mode[i],
! 				   XEXP (recog_data.operand[i], 1));
! 	tem = gen_rtx_PLUS (operand_mode[i],
! 			    XEXP (recog_data.operand[i], 0), tem);
! 
! 	substed_operand[i] = recog_data.operand[i]
! 	  = find_reloads_toplev (tem, i, address_type[i],
! 				 ind_levels, 0, insn, NULL);
!       }
  
    /* Record the values of the earlyclobber operands for the caller.  */
    if (goal_earlyclobber)
--- 3824,3885 ----
  	     ? RELOAD_FOR_INSN : RELOAD_OTHER);
      }
  
!     /* Any constants that aren't allowed and can't be reloaded
!        into registers are here changed into memory references.  */
!     for (i = 0; i < noperands; i++)
!     if (! goal_alternative_win[i])
!         {
! 	rtx op = recog_data.operand[i];
! 	rtx subreg = NULL_RTX;
! 	rtx plus = NULL_RTX;
! 	enum machine_mode mode = operand_mode[i];
! 
! 	/* Reloads of SUBREGs of CONSTANT RTXs are handled later in
! 	   push_reload so we have to let them pass here.  */
! 	if (GET_CODE (op) == SUBREG)
! 	  {
! 	    subreg = op;
! 	    op = SUBREG_REG (op);
! 	    mode = GET_MODE (op);
! 	  }
! 
! 	if (GET_CODE (op) == PLUS)
! 	  {
! 	    plus = op;
! 	    op = XEXP (op, 1);
! 	  }
! 
! 	if (CONST_POOL_OK_P (op)
! 	    && ((PREFERRED_RELOAD_CLASS (op,
! 					 (enum reg_class) goal_alternative[i])
! 		 == NO_REGS)
! 		|| no_input_reloads)
! 	    && mode != VOIDmode)
! 	  {
! 	    int this_address_reloaded;
! 	    rtx tem = force_const_mem (mode, op);
! 
! 	    /* If we stripped a SUBREG or a PLUS above add it back.  */
! 	    if (plus != NULL_RTX)
! 	      tem = gen_rtx_PLUS (mode, XEXP (plus, 0), tem);
! 
! 	    if (subreg != NULL_RTX)
! 	      tem = gen_rtx_SUBREG (operand_mode[i], tem, SUBREG_BYTE (subreg));
! 
! 	    this_address_reloaded = 0;
! 	    substed_operand[i] = recog_data.operand[i]
! 	      = find_reloads_toplev (tem, i, address_type[i], ind_levels,
! 				     0, insn, &this_address_reloaded);
! 
! 	    /* If the alternative accepts constant pool refs directly
! 	       there will be no reload needed at all.  */
! 	if (plus == NULL_RTX
! 	    && subreg == NULL_RTX
! 	    && alternative_allows_memconst (recog_data.constraints[i],
  					 goal_alternative_number))
! 	      goal_alternative_win[i] = 1;
! 	  }
!         }
  
    /* Record the values of the earlyclobber operands for the caller.  */
    if (goal_earlyclobber)

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File nov415378.diff of Package gcc41

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