--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/ia64/predicates.md	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,590 @@
+;; Predicate definitions for IA-64.
+;; Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
+;;
+;; This file is part of GCC.
+;;
+;; GCC is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 3, or (at your option)
+;; any later version.
+;;
+;; GCC is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with GCC; see the file COPYING3.  If not see
+;; <http://www.gnu.org/licenses/>.
+
+;; True if OP is a valid operand for the MEM of a CALL insn.
+(define_predicate "call_operand"
+  (ior (match_code "symbol_ref")
+       (match_operand 0 "register_operand")))
+
+;; True if OP refers to any kind of symbol.
+;; For roughly the same reasons that pmode_register_operand exists, this
+;; predicate ignores its mode argument.
+(define_special_predicate "symbolic_operand" 
+   (match_code "symbol_ref,const,label_ref"))
+
+;; True if OP is a SYMBOL_REF which refers to a function.
+(define_predicate "function_operand"
+  (and (match_code "symbol_ref")
+       (match_test "SYMBOL_REF_FUNCTION_P (op)")))
+
+;; True if OP refers to a symbol in the sdata section.
+(define_predicate "sdata_symbolic_operand" 
+  (match_code "symbol_ref,const")
+{
+  HOST_WIDE_INT offset = 0, size = 0;
+
+  switch (GET_CODE (op))
+    {
+    case CONST:
+      op = XEXP (op, 0);
+      if (GET_CODE (op) != PLUS
+	  || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
+	  || GET_CODE (XEXP (op, 1)) != CONST_INT)
+	return false;
+      offset = INTVAL (XEXP (op, 1));
+      op = XEXP (op, 0);
+      /* FALLTHRU */
+
+    case SYMBOL_REF:
+      if (CONSTANT_POOL_ADDRESS_P (op))
+	{
+	  size = GET_MODE_SIZE (get_pool_mode (op));
+	  if (size > ia64_section_threshold)
+	    return false;
+	}
+      else
+	{
+	  tree t;
+
+	  if (!SYMBOL_REF_LOCAL_P (op) || !SYMBOL_REF_SMALL_P (op))
+	    return false;
+
+	  /* Note that in addition to DECLs, we can get various forms
+	     of constants here.  */
+	  t = SYMBOL_REF_DECL (op);
+	  if (DECL_P (t))
+	    t = DECL_SIZE_UNIT (t);
+	  else
+	    t = TYPE_SIZE_UNIT (TREE_TYPE (t));
+	  if (t && host_integerp (t, 0))
+	    {
+	      size = tree_low_cst (t, 0);
+	      if (size < 0)
+		size = 0;
+	    }
+	}
+
+      /* Deny the stupid user trick of addressing outside the object.  Such
+	 things quickly result in GPREL22 relocation overflows.  Of course,
+	 they're also highly undefined.  From a pure pedant's point of view
+	 they deserve a slap on the wrist (such as provided by a relocation
+	 overflow), but that just leads to bugzilla noise.  */
+      return (offset >= 0 && offset <= size);
+
+    default:
+      gcc_unreachable ();
+    }
+})
+
+;; True if OP refers to a symbol in the small address area.
+(define_predicate "small_addr_symbolic_operand" 
+  (match_code "symbol_ref,const")
+{
+  switch (GET_CODE (op))
+    {
+    case CONST:
+      op = XEXP (op, 0);
+      if (GET_CODE (op) != PLUS
+	  || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
+	  || GET_CODE (XEXP (op, 1)) != CONST_INT)
+	return false;
+      op = XEXP (op, 0);
+      /* FALLTHRU */
+
+    case SYMBOL_REF:
+      return SYMBOL_REF_SMALL_ADDR_P (op);
+
+    default:
+      gcc_unreachable ();
+    }
+})
+
+;; True if OP refers to a symbol with which we may use any offset.
+(define_predicate "any_offset_symbol_operand"
+  (match_code "symbol_ref")
+{
+  if (TARGET_NO_PIC || TARGET_AUTO_PIC)
+    return true;
+  if (SYMBOL_REF_SMALL_ADDR_P (op))
+    return true;
+  if (SYMBOL_REF_FUNCTION_P (op))
+    return false;
+  if (sdata_symbolic_operand (op, mode))
+    return true;
+  return false;
+})
+
+;; True if OP refers to a symbol with which we may use 14-bit aligned offsets.
+;; False if OP refers to a symbol with which we may not use any offset at any
+;; time.
+(define_predicate "aligned_offset_symbol_operand"
+  (and (match_code "symbol_ref")
+       (match_test "! SYMBOL_REF_FUNCTION_P (op)")))
+
+;; True if OP refers to a symbol, and is appropriate for a GOT load.
+(define_predicate "got_symbolic_operand" 
+  (match_operand 0 "symbolic_operand" "")
+{
+  HOST_WIDE_INT addend = 0;
+
+  switch (GET_CODE (op))
+    {
+    case LABEL_REF:
+      return true;
+
+    case CONST:
+      /* Accept only (plus (symbol_ref) (const_int)).  */
+      op = XEXP (op, 0);
+      if (GET_CODE (op) != PLUS
+	  || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
+          || GET_CODE (XEXP (op, 1)) != CONST_INT)
+        return false;
+
+      addend = INTVAL (XEXP (op, 1));
+      op = XEXP (op, 0);
+      /* FALLTHRU */
+
+    case SYMBOL_REF:
+      /* These symbols shouldn't be used with got loads.  */
+      if (SYMBOL_REF_SMALL_ADDR_P (op))
+	return false;
+      if (SYMBOL_REF_TLS_MODEL (op) != 0)
+	return false;
+
+      if (any_offset_symbol_operand (op, mode))
+	return true;
+
+      /* The low 14 bits of the constant have been forced to zero
+	 so that we do not use up so many GOT entries.  Prevent cse
+	 from undoing this.  */
+      if (aligned_offset_symbol_operand (op, mode))
+	return (addend & 0x3fff) == 0;
+
+      return addend == 0;
+
+    default:
+      gcc_unreachable ();
+    }
+})
+
+;; Return true if OP is a valid thread local storage symbolic operand.
+(define_predicate "tls_symbolic_operand"
+  (match_code "symbol_ref,const")
+{
+  switch (GET_CODE (op))
+    {
+    case SYMBOL_REF:
+      return SYMBOL_REF_TLS_MODEL (op) != 0;
+
+    case CONST:
+      op = XEXP (op, 0);
+      if (GET_CODE (op) != PLUS
+	  || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
+	  || GET_CODE (XEXP (op, 1)) != CONST_INT)
+	return false;
+
+      /* We only allow certain offsets for certain tls models.  */
+      switch (SYMBOL_REF_TLS_MODEL (XEXP (op, 0)))
+	{
+	case TLS_MODEL_GLOBAL_DYNAMIC:
+	case TLS_MODEL_LOCAL_DYNAMIC:
+	  return false;
+
+	case TLS_MODEL_INITIAL_EXEC:
+	  return (INTVAL (XEXP (op, 1)) & 0x3fff) == 0;
+
+	case TLS_MODEL_LOCAL_EXEC:
+	  return true;
+
+	default:
+	  return false;
+	}
+
+    default:
+      gcc_unreachable ();
+    }
+})
+
+;; Return true if OP is a local-dynamic thread local storage symbolic operand.
+(define_predicate "ld_tls_symbolic_operand"
+  (and (match_code "symbol_ref")
+       (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_DYNAMIC")))
+
+;; Return true if OP is an initial-exec thread local storage symbolic operand.
+(define_predicate "ie_tls_symbolic_operand"
+  (match_code "symbol_ref,const")
+{
+  switch (GET_CODE (op))
+    {
+    case CONST:
+      op = XEXP (op, 0);
+      if (GET_CODE (op) != PLUS
+	  || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
+	  || GET_CODE (XEXP (op, 1)) != CONST_INT
+	  || (INTVAL (XEXP (op, 1)) & 0x3fff) != 0)
+	return false;
+      op = XEXP (op, 0);
+      /* FALLTHRU */
+
+    case SYMBOL_REF:
+      return SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_INITIAL_EXEC;
+
+    default:
+      gcc_unreachable ();
+    }
+})
+
+;; Return true if OP is a local-exec thread local storage symbolic operand.
+(define_predicate "le_tls_symbolic_operand"
+  (match_code "symbol_ref,const")
+{
+  switch (GET_CODE (op))
+    {
+    case CONST:
+      op = XEXP (op, 0);
+      if (GET_CODE (op) != PLUS
+          || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
+          || GET_CODE (XEXP (op, 1)) != CONST_INT)
+        return false;
+      op = XEXP (op, 0);
+      /* FALLTHRU */
+
+    case SYMBOL_REF:
+      return SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_EXEC;
+
+    default:
+      gcc_unreachable ();
+    }
+})
+
+;; Like nonimmediate_operand, but don't allow MEMs that try to use a
+;; POST_MODIFY with a REG as displacement.
+(define_predicate "destination_operand"
+  (and (match_operand 0 "nonimmediate_operand")
+       (match_test "GET_CODE (op) != MEM
+		    || GET_CODE (XEXP (op, 0)) != POST_MODIFY
+		    || GET_CODE (XEXP (XEXP (XEXP (op, 0), 1), 1)) != REG")))
+
+;; Like memory_operand, but don't allow post-increments.
+(define_predicate "not_postinc_memory_operand"
+  (and (match_operand 0 "memory_operand")
+       (match_test "GET_RTX_CLASS (GET_CODE (XEXP (op, 0))) != RTX_AUTOINC")))
+
+;; True if OP is a general operand, with some restrictions on symbols.
+(define_predicate "move_operand"
+  (match_operand 0 "general_operand")
+{
+  switch (GET_CODE (op))
+    {
+    case CONST:
+      {
+	HOST_WIDE_INT addend;
+
+	/* Accept only (plus (symbol_ref) (const_int)).  */
+	op = XEXP (op, 0);
+	if (GET_CODE (op) != PLUS
+	    || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
+            || GET_CODE (XEXP (op, 1)) != CONST_INT)
+	  return false;
+
+	addend = INTVAL (XEXP (op, 1));
+	op = XEXP (op, 0);
+
+	/* After reload, we want to allow any offset whatsoever.  This
+	   allows reload the opportunity to avoid spilling addresses to
+	   the stack, and instead simply substitute in the value from a
+	   REG_EQUIV.  We'll split this up again when splitting the insn.  */
+	if (reload_in_progress || reload_completed)
+	  return true;
+
+	/* Some symbol types we allow to use with any offset.  */
+	if (any_offset_symbol_operand (op, mode))
+	  return true;
+
+	/* Some symbol types we allow offsets with the low 14 bits of the
+	   constant forced to zero so that we do not use up so many GOT
+	   entries.  We want to prevent cse from undoing this.  */
+	if (aligned_offset_symbol_operand (op, mode))
+	  return (addend & 0x3fff) == 0;
+
+	/* The remaining symbol types may never be used with an offset.  */
+	return false;
+      }
+
+    default:
+      return true;
+    }
+})
+
+;; True if OP is a register operand that is (or could be) a GR reg.
+(define_predicate "gr_register_operand"
+  (match_operand 0 "register_operand")
+{
+  unsigned int regno;
+  if (GET_CODE (op) == SUBREG)
+    op = SUBREG_REG (op);
+
+  regno = REGNO (op);
+  return (regno >= FIRST_PSEUDO_REGISTER || GENERAL_REGNO_P (regno));
+})
+
+;; True if OP is a register operand that is (or could be) an FR reg.
+(define_predicate "fr_register_operand"
+  (match_operand 0 "register_operand")
+{
+  unsigned int regno;
+  if (GET_CODE (op) == SUBREG)
+    op = SUBREG_REG (op);
+
+  regno = REGNO (op);
+  return (regno >= FIRST_PSEUDO_REGISTER || FR_REGNO_P (regno));
+})
+
+;; True if OP is a register operand that is (or could be) a GR/FR reg.
+(define_predicate "grfr_register_operand"
+  (match_operand 0 "register_operand")
+{
+  unsigned int regno;
+  if (GET_CODE (op) == SUBREG)
+    op = SUBREG_REG (op);
+
+  regno = REGNO (op);
+  return (regno >= FIRST_PSEUDO_REGISTER
+	  || GENERAL_REGNO_P (regno)
+	  || FR_REGNO_P (regno));
+})
+
+;; True if OP is a nonimmediate operand that is (or could be) a GR reg.
+(define_predicate "gr_nonimmediate_operand"
+  (match_operand 0 "nonimmediate_operand")
+{
+  unsigned int regno;
+
+  if (GET_CODE (op) == MEM)
+    return true;
+  if (GET_CODE (op) == SUBREG)
+    op = SUBREG_REG (op);
+
+  regno = REGNO (op);
+  return (regno >= FIRST_PSEUDO_REGISTER || GENERAL_REGNO_P (regno));
+})
+
+;; True if OP is a nonimmediate operand that is (or could be) a FR reg.
+(define_predicate "fr_nonimmediate_operand"
+  (match_operand 0 "nonimmediate_operand")
+{
+  unsigned int regno;
+
+  if (GET_CODE (op) == MEM)
+    return true;
+  if (GET_CODE (op) == SUBREG)
+    op = SUBREG_REG (op);
+
+  regno = REGNO (op);
+  return (regno >= FIRST_PSEUDO_REGISTER || FR_REGNO_P (regno));
+})
+
+;; True if OP is a nonimmediate operand that is (or could be) a GR/FR reg.
+(define_predicate "grfr_nonimmediate_operand"
+  (match_operand 0 "nonimmediate_operand")
+{
+  unsigned int regno;
+
+  if (GET_CODE (op) == MEM)
+    return true;
+  if (GET_CODE (op) == SUBREG)
+    op = SUBREG_REG (op);
+
+  regno = REGNO (op);
+  return (regno >= FIRST_PSEUDO_REGISTER
+	  || GENERAL_REGNO_P (regno)
+	  || FR_REGNO_P (regno));
+})
+
+;; True if OP is a GR register operand, or zero.
+(define_predicate "gr_reg_or_0_operand"
+  (ior (match_operand 0 "gr_register_operand")
+       (and (match_code "const_int,const_double,const_vector")
+	    (match_test "op == CONST0_RTX (GET_MODE (op))"))))
+
+;; True if OP is a GR register operand, or a 5-bit immediate operand.
+(define_predicate "gr_reg_or_5bit_operand"
+  (ior (match_operand 0 "gr_register_operand")
+       (and (match_code "const_int")
+	    (match_test "INTVAL (op) >= 0 && INTVAL (op) < 32"))))
+
+;; True if OP is a GR register operand, or a 6-bit immediate operand.
+(define_predicate "gr_reg_or_6bit_operand"
+  (ior (match_operand 0 "gr_register_operand")
+       (and (match_code "const_int")
+	    (match_test "satisfies_constraint_M (op)"))))
+
+;; True if OP is a GR register operand, or an 8-bit immediate operand.
+(define_predicate "gr_reg_or_8bit_operand"
+  (ior (match_operand 0 "gr_register_operand")
+       (and (match_code "const_int")
+	    (match_test "satisfies_constraint_K (op)"))))
+
+;; True if OP is a GR/FR register operand, or an 8-bit immediate operand.
+(define_predicate "grfr_reg_or_8bit_operand"
+  (ior (match_operand 0 "grfr_register_operand")
+       (and (match_code "const_int")
+	    (match_test "satisfies_constraint_K (op)"))))
+
+;; True if OP is a register operand, or an 8-bit adjusted immediate operand.
+(define_predicate "gr_reg_or_8bit_adjusted_operand"
+  (ior (match_operand 0 "gr_register_operand")
+       (and (match_code "const_int")
+	    (match_test "satisfies_constraint_L (op)"))))
+
+;; True if OP is a register operand, or is valid for both an 8-bit
+;; immediate and an 8-bit adjusted immediate operand.  This is necessary
+;; because when we emit a compare, we don't know what the condition will be,
+;; so we need the union of the immediates accepted by GT and LT.
+(define_predicate "gr_reg_or_8bit_and_adjusted_operand"
+  (ior (match_operand 0 "gr_register_operand")
+       (and (match_code "const_int")
+	    (match_test "satisfies_constraint_K (op)
+                         && satisfies_constraint_L (op)"))))
+
+;; True if OP is a register operand, or a 14-bit immediate operand.
+(define_predicate "gr_reg_or_14bit_operand"
+  (ior (match_operand 0 "gr_register_operand")
+       (and (match_code "const_int")
+	    (match_test "satisfies_constraint_I (op)"))))
+
+;;  True if OP is a register operand, or a 22-bit immediate operand.
+(define_predicate "gr_reg_or_22bit_operand"
+  (ior (match_operand 0 "gr_register_operand")
+       (and (match_code "const_int")
+	    (match_test "satisfies_constraint_J (op)"))))
+
+;; True if OP is a 7-bit immediate operand.
+(define_predicate "dshift_count_operand"
+  (and (match_code "const_int")
+       (match_test "INTVAL (op) >= 0 && INTVAL (op) < 128")))
+
+;; True if OP is a 6-bit immediate operand.
+(define_predicate "shift_count_operand"
+  (and (match_code "const_int")
+       (match_test "satisfies_constraint_M (op)")))
+
+;; True if OP-1 is a 6-bit immediate operand, used in extr instruction.
+(define_predicate "extr_len_operand"
+  (and (match_code "const_int")
+       (match_test "satisfies_constraint_M (GEN_INT (INTVAL (op) - 1))")))
+
+;; True if OP is a 5-bit immediate operand.
+(define_predicate "shift_32bit_count_operand"
+   (and (match_code "const_int")
+        (match_test "INTVAL (op) >= 0 && INTVAL (op) < 32")))
+
+;; True if OP is one of the immediate values 2, 4, 8, or 16.
+(define_predicate "shladd_operand"
+  (and (match_code "const_int")
+       (match_test "INTVAL (op) == 2 || INTVAL (op) == 4 ||
+	            INTVAL (op) == 8 || INTVAL (op) == 16")))
+
+;; True if OP is one of the immediate values 1, 2, 3, or 4.
+(define_predicate "shladd_log2_operand"
+  (and (match_code "const_int")
+       (match_test "INTVAL (op) >= 1 && INTVAL (op) <= 4")))
+
+;; True if OP is one of the immediate values  -16, -8, -4, -1, 1, 4, 8, 16.
+(define_predicate "fetchadd_operand"
+  (and (match_code "const_int")
+       (match_test "INTVAL (op) == -16 || INTVAL (op) == -8 ||
+                    INTVAL (op) == -4  || INTVAL (op) == -1 ||
+                    INTVAL (op) == 1   || INTVAL (op) == 4  ||
+                    INTVAL (op) == 8   || INTVAL (op) == 16")))
+
+;; True if OP is 0..3.
+(define_predicate "const_int_2bit_operand"
+  (and (match_code "const_int")
+        (match_test "INTVAL (op) >= 0 && INTVAL (op) <= 3")))
+
+;; True if OP is a floating-point constant zero, one, or a register.
+(define_predicate "fr_reg_or_fp01_operand"
+  (ior (match_operand 0 "fr_register_operand")
+       (and (match_code "const_double")
+	    (match_test "satisfies_constraint_G (op)"))))
+
+;; Like fr_reg_or_fp01_operand, but don't allow any SUBREGs.
+(define_predicate "xfreg_or_fp01_operand"
+  (and (match_operand 0 "fr_reg_or_fp01_operand")
+       (not (match_code "subreg"))))
+
+;; True if OP is a constant zero, or a register.
+(define_predicate "fr_reg_or_0_operand"
+  (ior (match_operand 0 "fr_register_operand")
+       (and (match_code "const_double,const_vector")
+	    (match_test "op == CONST0_RTX (GET_MODE (op))"))))
+
+;; True if this is a comparison operator, which accepts a normal 8-bit
+;; signed immediate operand.
+(define_predicate "normal_comparison_operator"
+  (match_code "eq,ne,gt,le,gtu,leu"))
+
+;; True if this is a comparison operator, which accepts an adjusted 8-bit
+;; signed immediate operand.
+(define_predicate "adjusted_comparison_operator"
+  (match_code "lt,ge,ltu,geu"))
+
+;; True if this is a signed inequality operator.
+(define_predicate "signed_inequality_operator"
+  (match_code "ge,gt,le,lt"))
+
+;; True if this operator is valid for predication.
+(define_predicate "predicate_operator"
+  (match_code "eq,ne"))
+
+;; True if this operator can be used in a conditional operation.
+(define_predicate "condop_operator"
+  (match_code "plus,minus,ior,xor,and"))
+
+;; These three are hardware registers that can only be addressed in
+;; DImode.  It's not strictly necessary to test mode == DImode here,
+;; but it makes decent insurance against someone writing a
+;; match_operand wrong.
+
+;; True if this is the ar.lc register.
+(define_predicate "ar_lc_reg_operand"
+  (and (match_code "reg")
+       (match_test "mode == DImode && REGNO (op) == AR_LC_REGNUM")))
+
+;; True if this is the ar.ccv register.
+(define_predicate "ar_ccv_reg_operand"
+  (and (match_code "reg")
+       (match_test "mode == DImode && REGNO (op) == AR_CCV_REGNUM")))
+
+;; True if this is the ar.pfs register.
+(define_predicate "ar_pfs_reg_operand"
+  (and (match_code "reg")
+       (match_test "mode == DImode && REGNO (op) == AR_PFS_REGNUM")))
+
+;; True if OP is valid as a base register in a reg + offset address.
+;; ??? Should I copy the flag_omit_frame_pointer and cse_not_expected
+;; checks from pa.c basereg_operand as well?  Seems to be OK without them
+;; in test runs.
+(define_predicate "basereg_operand"
+  (match_operand 0 "register_operand")
+{
+  return REG_P (op) && REG_POINTER (op);
+})
+