X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=gcc%2Fconfig%2Fbfin%2Fpredicates.md;fp=gcc%2Fconfig%2Fbfin%2Fpredicates.md;h=7aac5b0534cebdd642f10fb7817766539dacb3a7;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=0000000000000000000000000000000000000000;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/gcc/config/bfin/predicates.md b/gcc/config/bfin/predicates.md new file mode 100644 index 00000000..7aac5b05 --- /dev/null +++ b/gcc/config/bfin/predicates.md @@ -0,0 +1,205 @@ +;; Predicate definitions for the Blackfin. +;; Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +;; Contributed by Analog Devices. +;; +;; 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 +;; . + +;; Return nonzero iff OP is one of the integer constants 1 or 2. +(define_predicate "pos_scale_operand" + (and (match_code "const_int") + (match_test "INTVAL (op) == 1 || INTVAL (op) == 2"))) + +;; Return nonzero iff OP is one of the integer constants 2 or 4. +(define_predicate "scale_by_operand" + (and (match_code "const_int") + (match_test "INTVAL (op) == 2 || INTVAL (op) == 4"))) + +;; Return nonzero if OP is a constant that consists of two parts; lower +;; bits all zero and upper bits all ones. In this case, we can perform +;; an AND operation with a sequence of two shifts. Don't return nonzero +;; if the constant would be cheap to load. +(define_predicate "highbits_operand" + (and (match_code "const_int") + (match_test "log2constp (-INTVAL (op)) && !satisfies_constraint_Ks7 (op)"))) + +;; Return nonzero if OP is suitable as a right-hand side operand for an +;; andsi3 operation. +(define_predicate "rhs_andsi3_operand" + (ior (match_operand 0 "register_operand") + (and (match_code "const_int") + (match_test "log2constp (~INTVAL (op)) || INTVAL (op) == 255 || INTVAL (op) == 65535")))) + +;; Return nonzero if OP is a register or a constant with exactly one bit +;; set. +(define_predicate "regorlog2_operand" + (ior (match_operand 0 "register_operand") + (and (match_code "const_int") + (match_test "log2constp (INTVAL (op))")))) + +;; Return nonzero if OP is a register or an integer constant. +(define_predicate "reg_or_const_int_operand" + (ior (match_operand 0 "register_operand") + (match_code "const_int"))) + +(define_predicate "const01_operand" + (and (match_code "const_int") + (match_test "op == const0_rtx || op == const1_rtx"))) + +(define_predicate "vec_shift_operand" + (ior (and (match_code "const_int") + (match_test "INTVAL (op) >= -16 && INTVAL (op) < 15")) + (match_operand 0 "register_operand"))) + +;; Like register_operand, but make sure that hard regs have a valid mode. +(define_predicate "valid_reg_operand" + (match_operand 0 "register_operand") +{ + if (GET_CODE (op) == SUBREG) + op = SUBREG_REG (op); + if (REGNO (op) < FIRST_PSEUDO_REGISTER) + return HARD_REGNO_MODE_OK (REGNO (op), mode); + return 1; +}) + +;; Return nonzero if OP is a D register. +(define_predicate "d_register_operand" + (and (match_code "reg") + (match_test "D_REGNO_P (REGNO (op))"))) + +;; Return nonzero if OP is a LC register. +(define_predicate "lc_register_operand" + (and (match_code "reg") + (match_test "REGNO (op) == REG_LC0 || REGNO (op) == REG_LC1"))) + +;; Return nonzero if OP is a LT register. +(define_predicate "lt_register_operand" + (and (match_code "reg") + (match_test "REGNO (op) == REG_LT0 || REGNO (op) == REG_LT1"))) + +;; Return nonzero if OP is a LB register. +(define_predicate "lb_register_operand" + (and (match_code "reg") + (match_test "REGNO (op) == REG_LB0 || REGNO (op) == REG_LB1"))) + +;; Return nonzero if OP is a register or a 7-bit signed constant. +(define_predicate "reg_or_7bit_operand" + (ior (match_operand 0 "register_operand") + (and (match_code "const_int") + (match_test "satisfies_constraint_Ks7 (op)")))) + +;; Return nonzero if OP is a register other than DREG and PREG. +(define_predicate "nondp_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 || !DP_REGNO_P (regno)); +}) + +;; Return nonzero if OP is a register other than DREG and PREG, or MEM. +(define_predicate "nondp_reg_or_memory_operand" + (ior (match_operand 0 "nondp_register_operand") + (match_operand 0 "memory_operand"))) + +;; Return nonzero if OP is a register or, when negated, a 7-bit signed +;; constant. +(define_predicate "reg_or_neg7bit_operand" + (ior (match_operand 0 "register_operand") + (and (match_code "const_int") + (match_test "satisfies_constraint_KN7 (op)")))) + +;; Used for secondary reloads, this function returns 1 if OP is of the +;; form (plus (fp) (const_int)). +(define_predicate "fp_plus_const_operand" + (match_code "plus") +{ + rtx op1, op2; + + op1 = XEXP (op, 0); + op2 = XEXP (op, 1); + return (REG_P (op1) + && (REGNO (op1) == FRAME_POINTER_REGNUM + || REGNO (op1) == STACK_POINTER_REGNUM) + && GET_CODE (op2) == CONST_INT); +}) + +;; Returns 1 if OP is a symbolic operand, i.e. a symbol_ref or a label_ref, +;; possibly with an offset. +(define_predicate "symbolic_operand" + (ior (match_code "symbol_ref,label_ref") + (and (match_code "const") + (match_test "GET_CODE (XEXP (op,0)) == PLUS + && (GET_CODE (XEXP (XEXP (op, 0), 0)) == SYMBOL_REF + || GET_CODE (XEXP (XEXP (op, 0), 0)) == LABEL_REF) + && GET_CODE (XEXP (XEXP (op, 0), 1)) == CONST_INT")))) + +;; Returns 1 if OP is a plain constant or matched by symbolic_operand. +(define_predicate "symbolic_or_const_operand" + (ior (match_code "const_int,const_double") + (match_operand 0 "symbolic_operand"))) + +;; Returns 1 if OP is a SYMBOL_REF. +(define_predicate "symbol_ref_operand" + (match_code "symbol_ref")) + +;; True for any non-virtual or eliminable register. Used in places where +;; instantiation of such a register may cause the pattern to not be recognized. +(define_predicate "register_no_elim_operand" + (match_operand 0 "register_operand") +{ + if (GET_CODE (op) == SUBREG) + op = SUBREG_REG (op); + return !(op == arg_pointer_rtx + || op == frame_pointer_rtx + || (REGNO (op) >= FIRST_PSEUDO_REGISTER + && REGNO (op) <= LAST_VIRTUAL_REGISTER)); +}) + +;; Test for an operator valid in a conditional branch +(define_predicate "bfin_cbranch_operator" + (match_code "eq,ne")) + +;; The following two are used to compute the addrtype attribute. They return +;; true if passed a memory address usable for a 16-bit load or store using a +;; P or I register, respectively. If neither matches, we know we have a +;; 32-bit instruction. +(define_predicate "mem_p_address_operand" + (match_code "mem") +{ + if (effective_address_32bit_p (op, mode)) + return 0; + op = XEXP (op, 0); + if (GET_CODE (op) == PLUS || GET_RTX_CLASS (GET_CODE (op)) == RTX_AUTOINC) + op = XEXP (op, 0); + gcc_assert (REG_P (op)); + return PREG_P (op); +}) + +(define_predicate "mem_i_address_operand" + (match_code "mem") +{ + if (effective_address_32bit_p (op, mode)) + return 0; + op = XEXP (op, 0); + if (GET_CODE (op) == PLUS || GET_RTX_CLASS (GET_CODE (op)) == RTX_AUTOINC) + op = XEXP (op, 0); + gcc_assert (REG_P (op)); + return IREG_P (op); +})