;; Predicate definitions for HP PA-RISC. ;; Copyright (C) 2005-2021 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/.

;; Return truth value of whether OP is an integer which fits the range ;; constraining 5-bit signed immediate operands in three-address insns.

(define_predicate “int5_operand” (and (match_code “const_int”) (match_test “INT_5_BITS (op)”)))

;; Return truth value of whether OP is an integer which fits the range ;; constraining 5-bit unsigned immediate operands in three-address insns.

(define_predicate “uint5_operand” (and (match_code “const_int”) (match_test “INT_U5_BITS (op)”)))

;; Return truth value of whether OP is an integer which fits the range ;; constraining 6-bit unsigned immediate operands in three-address insns.

(define_predicate “uint6_operand” (and (match_code “const_int”) (match_test “INT_U6_BITS (op)”)))

;; Return truth value of whether OP is an integer which fits the range ;; constraining 11-bit signed immediate operands in three-address insns.

(define_predicate “int11_operand” (and (match_code “const_int”) (match_test “INT_11_BITS (op)”)))

;; Return truth value of whether OP is an integer which fits the range ;; constraining 14-bit signed immediate operands in three-address insns.

(define_predicate “int14_operand” (and (match_code “const_int”) (match_test “INT_14_BITS (op)”)))

;; True iff OP is a const_int or const_double that will fit in 32 bits.

(define_predicate “uint32_operand” (if_then_else (match_test “HOST_BITS_PER_WIDE_INT > 32”) (and (match_code “const_int”) (match_test “INTVAL (op) >= 0 && INTVAL (op) < (HOST_WIDE_INT) 1 << 32”)) (and (match_code “const_int,const_double”) (match_test “CONST_INT_P (op) || CONST_DOUBLE_HIGH (op) == 0”))))

;; True iff depi can be used to compute (reg | OP).

(define_predicate “cint_ior_operand” (and (match_code “const_int”) (match_test “pa_ior_mask_p (INTVAL (op))”)))

;; True iff OP is CONST_INT that can be moved in one instruction ;; into a general register.

(define_predicate “cint_move_operand” (and (match_code “const_int”) (match_test “pa_cint_ok_for_move (INTVAL (op))”)))

;; True iff OP is a CONST0_RTX for MODE.

(define_predicate “const_0_operand” (and (match_code “const_int,const_double”) (match_test “op == CONST0_RTX (mode)”)))

;; A constant integer suitable for use in a PRE_MODIFY memory reference.

(define_predicate “pre_cint_operand” (and (match_code “const_int”) (match_test “INTVAL (op) >= -0x2000 && INTVAL (op) < 0x10”)))

;; A constant integer suitable for use in a POST_MODIFY memory reference.

(define_predicate “post_cint_operand” (and (match_code “const_int”) (match_test “INTVAL (op) < 0x2000 && INTVAL (op) >= -0x10”)))

;; True iff depi or extru can be used to compute (reg & OP).

(define_predicate “and_operand” (ior (match_operand 0 “register_operand”) (and (match_code “const_int”) (match_test “pa_and_mask_p (INTVAL (op))”))))

;; Return truth value of whether OP can be used as an operand in a ;; three operand arithmetic insn that accepts registers of mode MODE ;; or 5-bit signed integers.

(define_predicate “arith5_operand” (ior (match_operand 0 “register_operand”) (match_operand 0 “int5_operand”)))

;; Return truth value of whether OP can be used as an operand in a ;; three operand arithmetic insn that accepts registers of mode MODE ;; or 11-bit signed integers.

(define_predicate “arith11_operand” (ior (match_operand 0 “register_operand”) (match_operand 0 “int11_operand”)))

;; Return truth value of whether OP can be used as an operand in a ;; three operand arithmetic insn that accepts registers of mode MODE ;; or 14-bit signed integers.

(define_predicate “arith14_operand” (ior (match_operand 0 “register_operand”) (match_operand 0 “int14_operand”)))

;; Return truth value of whether OP can be used as an operand in a ;; three operand arithmetic insn that accepts registers of mode MODE ;; or 32-bit signed integers.

(define_predicate “arith32_operand” (ior (match_operand 0 “register_operand”) (match_code “const_int”)))

;; Return truth value of whether OP can be used as a shift operand in ;; a shift insn that accepts registers of mode MODE or 5-bit shift amounts.

(define_predicate “shift5_operand” (ior (match_operand 0 “register_operand”) (match_operand 0 “uint5_operand”)))

;; Return truth value of whether OP can be used as a shift operand in ;; a shift insn that accepts registers of mode MODE or 6-bit shift amounts.

(define_predicate “shift6_operand” (ior (match_operand 0 “register_operand”) (match_operand 0 “uint6_operand”)))

;; True iff OP can be used as an operand in an adddi3 insn.

(define_predicate “adddi3_operand” (if_then_else (match_test “TARGET_64BIT”) (match_operand 0 “arith14_operand”) (match_operand 0 “arith11_operand”)))

;; True iff OP is valid as a base or index register in a REG+REG address.

(define_predicate “borx_reg_operand” (match_code “reg”) { /* We must reject virtual registers as the only expressions that can be instantiated are REG and REG+CONST. */ if (op == virtual_incoming_args_rtx || op == virtual_stack_vars_rtx || op == virtual_stack_dynamic_rtx || op == virtual_outgoing_args_rtx || op == virtual_cfa_rtx) return false;

/* While it‘s always safe to index off the frame pointer, it’s not profitable to do so when the frame pointer is being eliminated. */ if (!reload_completed && flag_omit_frame_pointer && !cfun->calls_alloca && op == frame_pointer_rtx) return false;

return register_operand (op, mode); })

;; Return nonzero if OP is suitable for use in a call to a named ;; function. ;; ;; For 2.5 try to eliminate either call_operand_address or ;; function_label_operand, they perform very similar functions.

(define_predicate “call_operand_address” (match_code “label_ref,symbol_ref,const_int,const_double,const,high”) { return (GET_MODE (op) == word_mode && CONSTANT_P (op) && ! TARGET_PORTABLE_RUNTIME); })

;; True iff OP can be used as the divisor in a div millicode call.

(define_predicate “div_operand” (match_code “reg,const_int”) { return (mode == SImode && ((REG_P (op) && REGNO (op) == 25) || (CONST_INT_P (op) && INTVAL (op) > 0 && INTVAL (op) < 16 && pa_magic_milli[INTVAL (op)]))); })

;; True iff OP is a reloading floating point register

(define_predicate “fp_reg_operand” (and (match_code “reg”) (match_test “reg_renumber && FP_REG_P (op)”)))

;; True iff OP is a function label operand.

(define_special_predicate “function_label_operand” (and (match_code “symbol_ref”) (match_test “FUNCTION_NAME_P (XSTR (op, 0))”)))

;; True iff OP is an indexed memory operand.

(define_predicate “indexed_memory_operand” (match_code “subreg,mem”) { if (GET_MODE (op) != mode) return false;

/* Before reload, a (SUBREG (MEM...)) forces reloading into a register. */ if (reload_completed && GET_CODE (op) == SUBREG) op = SUBREG_REG (op);

if (! MEM_P (op)) return false;

op = XEXP (op, 0); return IS_INDEX_ADDR_P (op) && memory_address_p (mode, op); })

;; True iff OP is a register plus base memory operand.

(define_predicate “reg_plus_base_memory_operand” (match_code “subreg,mem”) { if (GET_MODE (op) != mode) return false;

/* Before reload, a (SUBREG (MEM...)) forces reloading into a register. */ if (reload_completed && GET_CODE (op) == SUBREG) op = SUBREG_REG (op);

if (! MEM_P (op)) return false;

op = XEXP (op, 0); if (GET_CODE (op) != PLUS) return false;

if (REG_P (XEXP (op, 0)) && REG_OK_FOR_BASE_P (XEXP (op, 0))) return GET_CODE (XEXP (op, 1)) == CONST_INT;

return false; })

;; True iff OP is a base14 operand.

(define_predicate “base14_operand” (match_code “const_int”) { if (!INT_14_BITS (op)) return false;

/* Although this may not be necessary, we require that the base value is correctly aligned for its mode as this is assumed in the instruction encoding. */ switch (mode) { case E_BLKmode: case E_QImode: case E_HImode: return true;

case E_VOIDmode:
  return false;

default:
  return (INTVAL (op) % GET_MODE_SIZE (mode)) == 0;
}

return false; })

;; True iff the operand OP can be used as the destination operand of ;; an integer store. This also implies the operand could be used as ;; the source operand of an integer load. LO_SUM DLT and indexed ;; memory operands are not allowed. We accept reloading pseudos and ;; other memory operands.

(define_predicate “integer_store_memory_operand” (match_code “reg,mem”) { if (reload_in_progress && REG_P (op) && REGNO (op) >= FIRST_PSEUDO_REGISTER && reg_renumber [REGNO (op)] < 0) return true;

if (reg_plus_base_memory_operand (op, mode)) { if (reload_in_progress) return true;

  /* Extract CONST_INT operand.  */
  if (GET_CODE (op) == SUBREG)
op = SUBREG_REG (op);
  op = XEXP (op, 0);
  op = REG_P (XEXP (op, 0)) ? XEXP (op, 1) : XEXP (op, 0);
  return base14_operand (op, mode) || INT_5_BITS (op);
}

if (!MEM_P (op)) return false;

return ((reload_in_progress || memory_address_p (mode, XEXP (op, 0))) && !IS_LO_SUM_DLT_ADDR_P (XEXP (op, 0)) && !IS_INDEX_ADDR_P (XEXP (op, 0))); })

;; True iff the operand OP can be used as the destination operand of ;; a floating point store. This also implies the operand could be used as ;; the source operand of a floating point load. LO_SUM DLT and indexed ;; memory operands are not allowed. Symbolic operands are accepted if ;; INT14_OK_STRICT is true. We accept reloading pseudos and other memory ;; operands.

(define_predicate “floating_point_store_memory_operand” (match_code “reg,mem”) { if (reload_in_progress && REG_P (op) && REGNO (op) >= FIRST_PSEUDO_REGISTER && reg_renumber [REGNO (op)] < 0) return true;

if (reg_plus_base_memory_operand (op, mode)) { if (reload_in_progress) return true;

  /* Extract CONST_INT operand.  */
  if (GET_CODE (op) == SUBREG)
op = SUBREG_REG (op);
  op = XEXP (op, 0);
  op = REG_P (XEXP (op, 0)) ? XEXP (op, 1) : XEXP (op, 0);
  return ((TARGET_PA_20
       && !TARGET_ELF32
       && base14_operand (op, mode))
      || INT_5_BITS (op));
}

if (!MEM_P (op)) return false;

return ((reload_in_progress || memory_address_p (mode, XEXP (op, 0))) && (INT14_OK_STRICT || !symbolic_memory_operand (op, VOIDmode)) && !IS_LO_SUM_DLT_ADDR_P (XEXP (op, 0)) && !IS_INDEX_ADDR_P (XEXP (op, 0))); })

;; Return true iff OP is an integer register.

(define_predicate “ireg_operand” (and (match_code “reg”) (match_test “REGNO (op) > 0 && REGNO (op) < 32”)))

;; Return truth value of whether OP is an integer which fits the range ;; constraining immediate operands in three-address insns, or is an ;; integer register.

(define_predicate “ireg_or_int5_operand” (ior (match_operand 0 “ireg_operand”) (match_operand 0 “int5_operand”)))

;; True iff OP is a CONST_INT of the forms 0...0xxxx, 0...01...1xxxx, ;; or 1...1xxxx. Such values can be the left hand side x in (x << r), ;; using the zvdepi instruction.

(define_predicate “lhs_lshift_cint_operand” (match_code “const_int”) { unsigned HOST_WIDE_INT x; x = INTVAL (op) >> 4; return (x & (x + 1)) == 0; })

;; True iff OP can be used in a zvdep instruction.

(define_predicate “lhs_lshift_operand” (ior (match_operand 0 “register_operand”) (match_operand 0 “lhs_lshift_cint_operand”)))

;; Accept anything that can be used as a destination operand for a ;; move instruction. We don't accept indexed memory operands since ;; they are supported only for floating point stores.

(define_predicate “move_dest_operand” (match_code “subreg,reg,mem”) { if (register_operand (op, mode)) return true;

if (GET_MODE (op) != mode) return false;

if (GET_CODE (op) == SUBREG) op = SUBREG_REG (op);

if (! MEM_P (op)) return false;

op = XEXP (op, 0);

return (memory_address_p (mode, op) && !IS_INDEX_ADDR_P (op) && !IS_LO_SUM_DLT_ADDR_P (op)); })

;; Accept anything that can be used as a source operand for a move ;; instruction.

(define_predicate “move_src_operand” (match_code “subreg,reg,const_int,const_double,mem”) { if (register_operand (op, mode)) return true;

if (op == CONST0_RTX (mode)) return true;

if (CONST_INT_P (op)) return pa_cint_ok_for_move (INTVAL (op));

if (GET_MODE (op) != mode) return false;

if (GET_CODE (op) == SUBREG) op = SUBREG_REG (op);

if (! MEM_P (op)) return false;

/* Until problems with management of the REG_POINTER flag are resolved, we need to delay creating move insns with unscaled indexed addresses until CSE is not expected. */ if (!TARGET_NO_SPACE_REGS && !cse_not_expected && GET_CODE (XEXP (op, 0)) == PLUS && REG_P (XEXP (XEXP (op, 0), 0)) && REG_P (XEXP (XEXP (op, 0), 1))) return false;

return memory_address_p (mode, XEXP (op, 0)); })

;; True iff OP is not a symbolic memory operand.

(define_predicate “nonsymb_mem_operand” (match_code “subreg,mem”) { if (GET_CODE (op) == SUBREG) op = SUBREG_REG (op);

if (! MEM_P (op)) return false;

/* Until problems with management of the REG_POINTER flag are resolved, we need to delay creating move insns with unscaled indexed addresses until CSE is not expected. */ if (!TARGET_NO_SPACE_REGS && !cse_not_expected && GET_CODE (XEXP (op, 0)) == PLUS && REG_P (XEXP (XEXP (op, 0), 0)) && REG_P (XEXP (XEXP (op, 0), 1))) return false;

return (!symbolic_memory_operand (op, mode) && memory_address_p (mode, XEXP (op, 0))); })

;; True iff OP is anything other than a hard register.

(define_predicate “non_hard_reg_operand” (match_test “! (REG_P (op) && REGNO (op) < FIRST_PSEUDO_REGISTER)”))

;; True iff OP is a reference to a label whose address can be loaded ;; while generating PIC code.

(define_predicate “pic_label_operand” (match_code “label_ref,const”) { if (!flag_pic) return false;

switch (GET_CODE (op)) { case LABEL_REF: return true; case CONST: op = XEXP (op, 0); return (GET_CODE (XEXP (op, 0)) == LABEL_REF && CONST_INT_P (XEXP (op, 1))); default: gcc_unreachable (); } return false; })

;; True iff the operand OP lives in text space. OP is a symbolic operand. ;; If so, SYMBOL_REF_FLAG, which is set by pa_encode_section_info, is true.

(define_special_predicate “read_only_operand” (match_test “true”) { if (GET_CODE (op) == CONST) op = XEXP (XEXP (op, 0), 0); if (GET_CODE (op) == SYMBOL_REF) { if (flag_pic) return SYMBOL_REF_FLAG (op) && !CONSTANT_POOL_ADDRESS_P (op); else return SYMBOL_REF_FLAG (op) || CONSTANT_POOL_ADDRESS_P (op); } return true; })

;; True iff the operand is a register operand, or a non-symbolic ;; memory operand after reload. A SUBREG is not accepted since it ;; will need a reload. ;; ;; This predicate is used for branch patterns that internally handle ;; register reloading. We need to accept non-symbolic memory operands ;; after reload to ensure that the pattern is still valid if reload ;; didn't find a hard register for the operand. We also reject index ;; and lo_sum DLT address as these are invalid for move destinations.

(define_predicate “reg_before_reload_operand” (match_code “reg,mem”) { rtx op0;

if (register_operand (op, mode)) return true;

if (!reload_in_progress && !reload_completed) return false;

if (! MEM_P (op)) return false;

op0 = XEXP (op, 0);

return (memory_address_p (mode, op0) && !IS_INDEX_ADDR_P (op0) && !IS_LO_SUM_DLT_ADDR_P (op0) && !symbolic_memory_operand (op, mode)); })

;; True iff OP is a register or const_0 operand for MODE.

(define_predicate “reg_or_0_operand” (ior (match_operand 0 “register_operand”) (match_operand 0 “const_0_operand”)))

;; True iff OP is either a register, zero, or a non-symbolic memory operand.

(define_predicate “reg_or_0_or_nonsymb_mem_operand” (ior (match_operand 0 “reg_or_0_operand”) (match_operand 0 “nonsymb_mem_operand”)))

;; Accept REG and any CONST_INT that can be moved in one instruction ;; into a general register.

(define_predicate “reg_or_cint_move_operand” (ior (match_operand 0 “register_operand”) (match_operand 0 “cint_move_operand”)))

;; True iff OP can be used to compute (reg | OP).

(define_predicate “reg_or_cint_ior_operand” (ior (match_operand 0 “register_operand”) (match_operand 0 “cint_ior_operand”)))

;; Return 1 if OP is a CONST_INT with the value 2, 4, or 8. These are ;; the valid constants for shadd instructions.

(define_predicate “mem_shadd_operand” (and (match_code “const_int”) (match_test “pa_mem_shadd_constant_p (INTVAL (op))”)))

(define_predicate “shadd_operand” (and (match_code “const_int”) (match_test “pa_shadd_constant_p (INTVAL (op))”)))

;; Return truth value of statement that OP is a symbolic memory operand.

(define_predicate “symbolic_memory_operand” (match_code “subreg,mem”) { if (GET_CODE (op) == SUBREG) op = SUBREG_REG (op); if (!MEM_P (op)) return false; op = XEXP (op, 0); if (GET_CODE (op) == LO_SUM) op = XEXP (op, 1); return pa_symbolic_expression_p (op); })

;; True iff OP is a symbolic operand. ;; Note: an inline copy of this code is present in pa_secondary_reload.

(define_predicate “symbolic_operand” (match_code “symbol_ref,label_ref,const”) { switch (GET_CODE (op)) { case SYMBOL_REF: return !SYMBOL_REF_TLS_MODEL (op); case LABEL_REF: return true; case CONST: op = XEXP (op, 0); return (GET_CODE (op) == PLUS && ((GET_CODE (XEXP (op, 0)) == SYMBOL_REF && !SYMBOL_REF_TLS_MODEL (XEXP (op, 0))) || GET_CODE (XEXP (op, 0)) == LABEL_REF) && GET_CODE (XEXP (op, 1)) == CONST_INT); default: break; } return false; })

;; Return true if OP is a symbolic operand for the TLS Global Dynamic model.

(define_predicate “tgd_symbolic_operand” (and (match_code “symbol_ref”) (match_test “SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_GLOBAL_DYNAMIC”)))

;; Return true if OP is a symbolic operand for the TLS Local Dynamic model.

(define_predicate “tld_symbolic_operand” (and (match_code “symbol_ref”) (match_test “SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_DYNAMIC”)))

;; Return true if OP is a symbolic operand for the TLS Initial Exec model.

(define_predicate “tie_symbolic_operand” (and (match_code “symbol_ref”) (match_test “SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_INITIAL_EXEC”)))

;; Return true if OP is a symbolic operand for the TLS Local Exec model.

(define_predicate “tle_symbolic_operand” (and (match_code “symbol_ref”) (match_test “SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_EXEC”)))

;; True iff OP is an operator suitable for use in a double-word cmpib ;; instruction.

(define_predicate “cmpib_comparison_operator” (match_code “eq,ne,lt,le,leu,gt,gtu,ge”))

;; True iff OP is an operator suitable for use in a movb instruction.

(define_predicate “movb_comparison_operator” (match_code “eq,ne,lt,ge”))

;; True iff OP is a PLUS, XOR or IOR operator.

(define_predicate “plus_xor_ior_operator” (match_code “plus,xor,ior”))