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;; Constraint definitions for SPU
;; Copyright (C) 2006, 2007 Free Software Foundation, Inc.
;;
;; This file 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 of the License, or (at your option)
;; any later version.
;; This file 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/>.
;; ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
;; GCC: ffffiiiiiiii x x x x xxxx xx
;; SPU: xxxx xxx xxxx xxxx x xxx xx x xxx xx
;; FREE: ffff i a a a a a aa aaa
;; x - used
;; a - available
;; i - available for integer immediates
;; f - available for floating point immediates
;; For most immediate constraints we have 3 variations to deal with the
;; fact const_int has no mode. One variation treats const_int as 32 bit,
;; another treats it as 64 bit, and the third sign extends it to 128 bit.
(define_constraint "A"
"An immediate which can be loaded with the il/ila/ilh/ilhu instructions. const_int is treated as a 32-bit value."
(ior (and (match_code "const_int,const_double,const_vector")
(match_test "immediate_load_p (op, SImode)"))
(match_code "symbol_ref,label_ref,high,const")))
(define_constraint "B"
"An immediate for arithmetic instructions (e.g., ai, ceqi). const_int is treated as a 32-bit value."
(and (match_code "const_int,const_double,const_vector")
(match_test "arith_immediate_p (op, SImode, -0x200, 0x1ff)")))
(define_constraint "C"
"An immediate for and/xor/or instructions. const_int is treated as a 32-bit value."
(and (match_code "const_int,const_double,const_vector")
(match_test "logical_immediate_p (op, SImode)")))
(define_constraint "D"
"An immediate for iohl instruction. const_int is treated as a 32-bit value."
(and (match_code "const_int,const_double,const_vector")
(match_test "iohl_immediate_p (op, SImode)")))
(define_constraint "U"
"An immediate which can be loaded with the il/ila/ilh/ilhu instructions. const_int is sign extended to 128 bit."
(and (match_code "const_int,const_double,const_vector")
(match_test "immediate_load_p (op, TImode)")))
(define_constraint "W"
"An immediate for shift and rotate instructions. const_int is treated as a 32-bit value."
(and (match_code "const_int,const_double,const_vector")
(match_test "arith_immediate_p (op, SImode, -0x80000000ll, 0x7fffffffll)")))
(define_constraint "Y"
"An immediate for and/xor/or instructions. const_int is sign extended as a 128 bit."
(and (match_code "const_int,const_double,const_vector")
(match_test "logical_immediate_p (op, TImode)")))
(define_constraint "Z"
"An immediate for iohl instruction. const_int is sign extended to 128 bit."
(and (match_code "const_int,const_double,const_vector")
(match_test "iohl_immediate_p (op, TImode)")))
(define_constraint "a"
"An immediate which can be loaded with the il/ila/ilh/ilhu instructions. const_int is treated as a 64-bit value."
(and (match_code "const_int")
(match_test "immediate_load_p (op, DImode)")))
(define_constraint "c"
"An immediate for and/xor/or instructions. const_int is treated as a 64-bit value."
(and (match_code "const_int")
(match_test "logical_immediate_p (op, DImode)")))
(define_constraint "d"
"An immediate for iohl instruction. const_int is treated as a 64-bit value."
(and (match_code "const_int")
(match_test "iohl_immediate_p (op, DImode)")))
(define_constraint "f"
"An immediate which can be loaded with fsmbi."
(and (match_code "const_int,const_double,const_vector")
(match_test "fsmbi_const_p (op)")))
(define_constraint "j"
"An immediate which can be loaded with one of the cbd/chd/cwd/cdd instructions. const_int is treated as a 32-bit value."
(and (match_code "const_int,const_double,const_vector")
(match_test "cpat_const_p (op, SImode)")))
(define_constraint "k"
"An immediate which can be loaded with one of the cbd/chd/cwd/cdd instructions. const_int is treated as a 64-bit value."
(and (match_code "const_int,const_double,const_vector")
(match_test "cpat_const_p (op, DImode)")))
(define_constraint "l"
"An immediate which can be loaded with one of the cbd/chd/cwd/cdd instructions."
(and (match_code "const_double,const_vector")
(match_test "cpat_const_p (op, TImode)")))
;; Integer constraints
(define_constraint "I"
"A constant in the range [-64, 63] for shift/rotate instructions."
(and (match_code "const_int")
(match_test "ival >= -0x40 && ival <= 0x3f")))
(define_constraint "J"
"An unsigned 7-bit constant for conversion/nop/channel instructions."
(and (match_code "const_int")
(match_test "ival >= 0 && ival <= 0x7f")))
(define_constraint "K"
"A signed 10-bit constant for most arithmetic instructions."
(and (match_code "const_int")
(match_test "ival >= -0x200 && ival <= 0x1ff")))
(define_constraint "M"
"A signed 16-bit immediate for @code{stop}."
(and (match_code "const_int")
(match_test "ival >= -0x8000ll && ival <= 0x7fffll")))
(define_constraint "N"
"An unsigned 16-bit constant for @code{iohl} and @code{fsmbi}."
(and (match_code "const_int")
(match_test "ival >= 0 && ival <= 0xffff")))
(define_constraint "O"
"An unsigned 7-bit constant whose 3 least significant bits are 0."
(and (match_code "const_int")
(match_test "(ival & 7) == 0")))
(define_constraint "P"
"An unsigned 3-bit constant for 16-byte rotates and shifts"
(and (match_code "const_int")
(match_test "ival >= 0 && ival <= 7")))
;; Memory constraints
(define_memory_constraint "R"
"Call operand, reg, for indirect calls"
(and (match_code "mem")
(match_test "GET_CODE(XEXP(op, 0)) == REG")))
(define_memory_constraint "S"
"Call operand, symbol, for relative calls."
(and (match_code "mem")
(match_test "!TARGET_LARGE_MEM
&& ((GET_CODE (XEXP (op, 0)) == SYMBOL_REF
|| GET_CODE (XEXP (op, 0)) == LABEL_REF))")))
(define_memory_constraint "T"
"Call operand, const_int, for absolute calls."
(and (match_code "mem")
(match_test "GET_CODE (XEXP (op, 0)) == CONST_INT
&& INTVAL (XEXP (op, 0)) >= 0
&& INTVAL (XEXP (op, 0)) <= 0x3ffff")))
;; Floating-point constant constraints.
(define_constraint "v"
"Floating point power of 2 with exponent in [0..127]"
(and (match_code "const_double,const_vector")
(match_test "exp2_immediate_p (op, VOIDmode, 0, 127)")))
(define_constraint "w"
"Floating point power of 2 with exponent in [-126..0]"
(and (match_code "const_double,const_vector")
(match_test "exp2_immediate_p (op, VOIDmode, -126, 0)")))
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