Delete dead code in ix86_expand_special_args_builtin

gcc/ChangeLog:
	* config/i386/i386-expand.c
	(ix86_expand_special_args_builtin): Delete last_arg_constant
	and match.

diff --git a/gcc/config/i386/i386-expand.c b/gcc/config/i386/i386-expand.c
index 73e3358b290b4de960515f804c3676950ad5e0f7..4707ebff242c3726a0a6bdf3bc51bd8decb00295 100644 (file)
--- a/gcc/config/i386/i386-expand.c
+++ b/gcc/config/i386/i386-expand.c
@@ -10494,7 +10494,6 @@ ix86_expand_special_args_builtin (const struct builtin_description *d,
       machine_mode mode;
     } args[3];
   enum insn_code icode = d->icode;
-  bool last_arg_constant = false;
   const struct insn_data_d *insn_p = &insn_data[icode];
   machine_mode tmode = insn_p->operand[0].mode;
   enum { load, store } klass;
@@ -10818,54 +10817,41 @@ ix86_expand_special_args_builtin (const struct builtin_description *d,
   for (i = 0; i < nargs; i++)
     {
       machine_mode mode = insn_p->operand[i + 1].mode;
-      bool match;
 
       arg = CALL_EXPR_ARG (exp, i + arg_adjust);
       op = expand_normal (arg);
-      match = insn_p->operand[i + 1].predicate (op, mode);
 
-      if (last_arg_constant && (i + 1) == nargs)
+      if (i == memory)
        {
-         if (!match)
-           {
-             error ("the last argument must be an 8-bit immediate");
-             return const0_rtx;
-           }
+         /* This must be the memory operand.  */
+         op = ix86_zero_extend_to_Pmode (op);
+         op = gen_rtx_MEM (mode, op);
+         /* op at this point has just BITS_PER_UNIT MEM_ALIGN
+            on it.  Try to improve it using get_pointer_alignment,
+            and if the special builtin is one that requires strict
+            mode alignment, also from it's GET_MODE_ALIGNMENT.
+            Failure to do so could lead to ix86_legitimate_combined_insn
+            rejecting all changes to such insns.  */
+         unsigned int align = get_pointer_alignment (arg);
+         if (aligned_mem && align < GET_MODE_ALIGNMENT (mode))
+           align = GET_MODE_ALIGNMENT (mode);
+         if (MEM_ALIGN (op) < align)
+           set_mem_align (op, align);
        }
       else
        {
-         if (i == memory)
-           {
-             /* This must be the memory operand.  */
-             op = ix86_zero_extend_to_Pmode (op);
-             op = gen_rtx_MEM (mode, op);
-             /* op at this point has just BITS_PER_UNIT MEM_ALIGN
-                on it.  Try to improve it using get_pointer_alignment,
-                and if the special builtin is one that requires strict
-                mode alignment, also from it's GET_MODE_ALIGNMENT.
-                Failure to do so could lead to ix86_legitimate_combined_insn
-                rejecting all changes to such insns.  */
-             unsigned int align = get_pointer_alignment (arg);
-             if (aligned_mem && align < GET_MODE_ALIGNMENT (mode))
-               align = GET_MODE_ALIGNMENT (mode);
-             if (MEM_ALIGN (op) < align)
-               set_mem_align (op, align);
-           }
-         else
-           {
-             /* This must be register.  */
-             if (VECTOR_MODE_P (mode))
-               op = safe_vector_operand (op, mode);
+         /* This must be register.  */
+         if (VECTOR_MODE_P (mode))
+           op = safe_vector_operand (op, mode);
 
-             op = fixup_modeless_constant (op, mode);
+         op = fixup_modeless_constant (op, mode);
 
-             if (GET_MODE (op) == mode || GET_MODE (op) == VOIDmode)
-               op = copy_to_mode_reg (mode, op);
-             else
-               {
-                 op = copy_to_reg (op);
-                 op = lowpart_subreg (mode, op, GET_MODE (op));
-               }
+         if (GET_MODE (op) == mode || GET_MODE (op) == VOIDmode)
+           op = copy_to_mode_reg (mode, op);
+         else
+           {
+             op = copy_to_reg (op);
+             op = lowpart_subreg (mode, op, GET_MODE (op));
            }
        }