;; FR30 machine description.
;; Copyright (C) 1998-2020 Free Software Foundation, Inc.
;; Contributed by Cygnus Solutions.
;; 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/>.
;;- See file "rtl.def" for documentation on define_insn, match_*, et. al.
;;{{{ Attributes
(define_attr "length" "" (const_int 2))
;; Used to distinguish between small memory model targets and big mode targets.
(define_attr "size" "small,big"
(const (if_then_else (symbol_ref "TARGET_SMALL_MODEL")
(const_string "small")
(const_string "big"))))
;; Define an attribute to be used by the delay slot code.
;; An instruction by default is considered to be 'delayable'
;; that is, it can be placed into a delay slot, but it is not
;; itself a delayed branch type instruction. An instruction
;; whose type is 'delayed' is one which has a delay slot, and
;; an instruction whose delay_type is 'other' is one which does
;; not have a delay slot, nor can it be placed into a delay slot.
(define_attr "delay_type" "delayable,delayed,other" (const_string "delayable"))
;;}}}
;;{{{ Delay Slot Specifications
(define_delay (eq_attr "delay_type" "delayed")
[(and (eq_attr "delay_type" "delayable")
(eq_attr "length" "2"))
(nil)
(nil)]
)
(include "predicates.md")
(include "constraints.md")
;;}}}
;;{{{ Moves
;;{{{ Comment
;; Wrap moves in define_expand to prevent memory->memory moves from being
;; generated at the RTL level, which generates better code for most machines
;; which can't do mem->mem moves.
;; If operand 0 is a `subreg' with mode M of a register whose own mode is wider
;; than M, the effect of this instruction is to store the specified value in
;; the part of the register that corresponds to mode M. The effect on the rest
;; of the register is undefined.
;; This class of patterns is special in several ways. First of all, each of
;; these names *must* be defined, because there is no other way to copy a datum
;; from one place to another.
;; Second, these patterns are not used solely in the RTL generation pass. Even
;; the reload pass can generate move insns to copy values from stack slots into
;; temporary registers. When it does so, one of the operands is a hard
;; register and the other is an operand that can need to be reloaded into a
;; register.
;; Therefore, when given such a pair of operands, the pattern must
;; generate RTL which needs no reloading and needs no temporary
;; registers--no registers other than the operands. For example, if
;; you support the pattern with a `define_expand', then in such a
;; case the `define_expand' mustn't call `force_reg' or any other such
;; function which might generate new pseudo registers.
;; This requirement exists even for subword modes on a RISC machine
;; where fetching those modes from memory normally requires several
;; insns and some temporary registers. Look in `spur.md' to see how
;; the requirement can be satisfied.
;; During reload a memory reference with an invalid address may be passed as an
;; operand. Such an address will be replaced with a valid address later in the
;; reload pass. In this case, nothing may be done with the address except to
;; use it as it stands. If it is copied, it will not be replaced with a valid
;; address. No attempt should be made to make such an address into a valid
;; address and no routine (such as `change_address') that will do so may be
;; called. Note that `general_operand' will fail when applied to such an
;; address.
;;
;; The global variable `reload_in_progress' (which must be explicitly declared
;; if required) can be used to determine whether such special handling is
;; required.
;;
;; The variety of operands that have reloads depends on the rest of
;; the machine description, but typically on a RISC machine these can
;; only be pseudo registers that did not get hard registers, while on
;; other machines explicit memory references will get optional
;; reloads.
;;
;; If a scratch register is required to move an object to or from memory, it
;; can be allocated using `gen_reg_rtx' prior to reload. But this is
;; impossible during and after reload. If there are cases needing scratch
;; registers after reload, you must define `SECONDARY_INPUT_RELOAD_CLASS' and
;; perhaps also `SECONDARY_OUTPUT_RELOAD_CLASS' to detect them, and provide
;; patterns `reload_inM' or `reload_outM' to handle them.
;; The constraints on a `moveM' must permit moving any hard register to any
;; other hard register provided that `TARGET_HARD_REGNO_MODE_OK' permits mode
;; M in both registers and `REGISTER_MOVE_COST' applied to their classes
;; returns a value of 2.
;; It is obligatory to support floating point `moveM' instructions
;; into and out of any registers that can hold fixed point values,
;; because unions and structures (which have modes `SImode' or
;; `DImode') can be in those registers and they may have floating
;; point members.
;; There may also be a need to support fixed point `moveM' instructions
;; in and out of floating point registers. Unfortunately, I have
;; forgotten why this was so, and I don't know whether it is still true.
;; If `TARGET_HARD_REGNO_MODE_OK' rejects fixed point values in floating
;; point registers, then the constraints of the fixed point `moveM'
;; instructions must be designed to avoid ever trying to reload into a
;; floating point register.
;;}}}
;;{{{ Push and Pop
;; Push a register onto the stack
(define_insn "movsi_push"
[(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 0 "register_operand" "a"))]
""
"st %0, @-r15"
)
;; Pop a register off the stack
(define_insn "movsi_pop"
[(set (match_operand:SI 0 "register_operand" "=a")
(mem:SI (post_inc:SI (reg:SI 15))))]
""
"ld @r15+, %0"
)
;;}}}
;;{{{ 1 Byte Moves
(define_expand "movqi"
[(set (match_operand:QI 0 "general_operand" "")
(match_operand:QI 1 "general_operand" ""))]
""
"
{
if (!reload_in_progress
&& !reload_completed
&& GET_CODE (operands[0]) == MEM
&& (GET_CODE (operands[1]) == MEM
|| immediate_operand (operands[1], QImode)))
operands[1] = copy_to_mode_reg (QImode, operands[1]);
}")
(define_insn "movqi_unsigned_register_load"
[(set (match_operand:SI 0 "register_operand" "=r")
(zero_extend:SI (match_operand:QI 1 "memory_operand" "m")))]
""
"ldub %1, %0"
)
(define_expand "movqi_signed_register_load"
[(set (match_operand:SI 0 "register_operand" "")
(sign_extend:SI (match_operand:QI 1 "memory_operand" "")))]
""
"
emit_insn (gen_movqi_unsigned_register_load (operands[0], operands[1]));
emit_insn (gen_extendqisi2 (operands[0], operands[0]));
DONE;
"
)
(define_insn "*movqi_internal"
[(set (match_operand:QI 0 "nonimmediate_operand" "=r,red,m,r")
(match_operand:QI 1 "general_operand" "i,red,r,rm"))]
""
"@
ldi:8\\t#%A1, %0
mov \\t%1, %0
stb \\t%1, %0
ldub \\t%1, %0"
)
;;}}}
;;{{{ 2 Byte Moves
(define_expand "movhi"
[(set (match_operand:HI 0 "general_operand" "")
(match_operand:HI 1 "general_operand" ""))]
""
"
{
if (!reload_in_progress
&& !reload_completed
&& GET_CODE (operands[0]) == MEM
&& (GET_CODE (operands[1]) == MEM
|| immediate_operand (operands[1], HImode)))
operands[1] = copy_to_mode_reg (HImode, operands[1]);
}")
(define_insn "movhi_unsigned_register_load"
[(set (match_operand:SI 0 "register_operand" "=r")
(zero_extend:SI (match_operand:HI 1 "memory_operand" "m")))]
""
"lduh %1, %0"
)
(define_expand "movhi_signed_register_load"
[(set (match_operand:SI 0 "register_operand" "")
(sign_extend:SI (match_operand:HI 1 "memory_operand" "")))]
""
"
emit_insn (gen_movhi_unsigned_register_load (operands[0], operands[1]));
emit_insn (gen_extendhisi2 (operands[0], operands[0]));
DONE;
"
)
(define_insn "*movhi_internal"
[(set (match_operand:HI 0 "nonimmediate_operand" "=r,r,r,red,m,r")
(match_operand:HI 1 "general_operand" "L,M,n,red,r,rm"))]
""
"@
ldi:8 \\t#%1, %0
ldi:20\\t#%1, %0
ldi:32\\t#%1, %0
mov \\t%1, %0
sth \\t%1, %0
lduh \\t%1, %0"
[(set_attr "length" "*,4,6,*,*,*")]
)
;;}}}
;;{{{ 4 Byte Moves
;; If the destination is a MEM and the source is a
;; MEM or an CONST_INT move the source into a register.
(define_expand "movsi"
[(set (match_operand:SI 0 "nonimmediate_operand" "")
(match_operand:SI 1 "general_operand" ""))]
""
"{
if (!reload_in_progress
&& !reload_completed
&& GET_CODE(operands[0]) == MEM
&& (GET_CODE (operands[1]) == MEM
|| immediate_operand (operands[1], SImode)))
operands[1] = copy_to_mode_reg (SImode, operands[1]);
}"
)
;; We can do some clever tricks when loading certain immediate
;; values. We implement these tricks as define_splits, rather
;; than putting the code into the define_expand "movsi" above,
;; because if we put them there, they will be evaluated at RTL
;; generation time and then the combiner pass will come along
;; and replace the multiple insns that have been generated with
;; the original, slower, load insns. (The combiner pass only
;; cares about reducing the number of instructions, it does not
;; care about instruction lengths or speeds). Splits are
;; evaluated after the combine pass and before the scheduling
;; passes, so that they are the perfect place to put this
;; intelligence.
;;
;; XXX we probably ought to implement these for QI and HI mode
;; loads as well.
;; If we are loading a small negative constant we can save space
;; and time by loading the positive value and then sign extending it.
(define_split
[(set (match_operand:SI 0 "register_operand" "")
(match_operand:SI 1 "const_int_operand" ""))]
"INTVAL (operands[1]) <= -1 && INTVAL (operands[1]) >= -128
&& (GET_CODE (operands[0]) != SUBREG
|| SCALAR_INT_MODE_P (GET_MODE (XEXP (operands[0], 0))))"
[(set (match_dup 0) (match_dup 1))
(set (match_dup 0) (sign_extend:SI (match_dup 2)))]
"{
operands[1] = GEN_INT (INTVAL (operands[1]) & 0xff);
operands[2] = gen_lowpart (QImode, operands[0]);
}"
)
;; If we are loading a large negative constant, one which does
;; not have any of its bottom 24 bit set, then we can save time
;; and space by loading the byte value and shifting it into place.
(define_split
[(set (match_operand:SI 0 "register_operand" "")
(match_operand:SI 1 "const_int_operand" ""))]
"(INTVAL (operands[1]) < 0) && ((INTVAL (operands[1]) & 0x00ffffff) == 0)"
[(set (match_dup 0) (match_dup 2))
(parallel [(set (match_dup 0) (ashift:SI (match_dup 0) (const_int 24)))
(clobber (reg:CC 16))])]
"{
HOST_WIDE_INT val = INTVAL (operands[1]);
operands[2] = GEN_INT (val >> 24);
}"
)
;; If we are loading a large positive constant, one which has bits
;; in the top byte set, but whose set bits all lie within an 8 bit
;; range, then we can save time and space by loading the byte value
;; and shifting it into place.
(define_split
[(set (match_operand:SI 0 "register_operand" "")
(match_operand:SI 1 "const_int_operand" ""))]
"(INTVAL (operands[1]) > 0x00ffffff)
&& ((INTVAL (operands[1]) >> exact_log2 (INTVAL (operands[1]) & (- INTVAL (operands[1])))) < 0x100)"
[(set (match_dup 0) (match_dup 2))
(parallel [(set (match_dup 0) (ashift:SI (match_dup 0) (match_dup 3)))
(clobber (reg:CC 16))])]
"{
HOST_WIDE_INT val = INTVAL (operands[1]);
int shift = exact_log2 (val & ( - val));
operands[2] = GEN_INT (val >> shift);
operands[3] = GEN_INT (shift);
}"
)
;; When TARGET_SMALL_MODEL is defined we assume that all symbolic
;; values are addresses which will fit in 20 bits.
(define_insn "movsi_internal"
[(set (match_operand:SI 0 "nonimmediate_operand" "=r,r,r,r,red,V,r,m")
(match_operand:SI 1 "general_operand" "L,M,n,i,rde,r,rm,r"))]
""
"*
{
switch (which_alternative)
{
case 0: return \"ldi:8 \\t#%1, %0\";
case 1: return \"ldi:20\\t#%1, %0\";
case 2: return \"ldi:32\\t#%1, %0\";
case 3: if (TARGET_SMALL_MODEL)
return \"ldi:20\\t%1, %0\";
else
return \"ldi:32\\t%1, %0\";
case 4: return \"mov \\t%1, %0\";
case 5: return \"st \\t%1, %0\";
case 6: return \"ld \\t%1, %0\";
case 7: return \"st \\t%1, %0\";
default: gcc_unreachable ();
}
}"
[(set (attr "length") (cond [(eq_attr "alternative" "1") (const_int 4)
(eq_attr "alternative" "2") (const_int 6)
(eq_attr "alternative" "3")
(if_then_else (eq_attr "size" "small")
(const_int 4)
(const_int 6))]
(const_int 2)))]
)
;;}}}
;;{{{ 8 Byte Moves
;; Note - the FR30 does not have an 8 byte load/store instruction
;; but we have to support this pattern because some other patterns
;; (e.g. muldisi2) can produce a DImode result.
;; (This code is stolen from the M32R port.)
(define_expand "movdi"
[(set (match_operand:DI 0 "nonimmediate_operand" "")
(match_operand:DI 1 "general_operand" ""))]
""
"
/* Everything except mem = const or mem = mem can be done easily. */
if (GET_CODE (operands[0]) == MEM)
operands[1] = force_reg (DImode, operands[1]);
"
)
;; We use an insn and a split so that we can generate
;; RTL rather than text from fr30_move_double().
(define_insn "*movdi_insn"
[(set (match_operand:DI 0 "nonimmediate_di_operand" "=r,r,m,r")
(match_operand:DI 1 "di_operand" "r,m,r,nF"))]
"register_operand (operands[0], DImode) || register_operand (operands[1], DImode)"
"#"
[(set_attr "length" "4,8,12,12")]
)
(define_split
[(set (match_operand:DI 0 "nonimmediate_di_operand" "")
(match_operand:DI 1 "di_operand" ""))]
"reload_completed"
[(match_dup 2)]
"operands[2] = fr30_move_double (operands);"
)
;;}}}
;;{{{ Load & Store Multiple Registers
;; The load multiple and store multiple patterns are implemented
;; as peepholes because the only time they are expected to occur
;; is during function prologues and epilogues.
(define_peephole
[(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 0 "high_register_operand" "h"))
(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 1 "high_register_operand" "h"))
(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 2 "high_register_operand" "h"))
(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 3 "high_register_operand" "h"))]
"fr30_check_multiple_regs (operands, 4, 1)"
"stm1 (%0, %1, %2, %3)"
[(set_attr "delay_type" "other")]
)
(define_peephole
[(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 0 "high_register_operand" "h"))
(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 1 "high_register_operand" "h"))
(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 2 "high_register_operand" "h"))]
"fr30_check_multiple_regs (operands, 3, 1)"
"stm1 (%0, %1, %2)"
[(set_attr "delay_type" "other")]
)
(define_peephole
[(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 0 "high_register_operand" "h"))
(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 1 "high_register_operand" "h"))]
"fr30_check_multiple_regs (operands, 2, 1)"
"stm1 (%0, %1)"
[(set_attr "delay_type" "other")]
)
(define_peephole
[(set (match_operand:SI 0 "high_register_operand" "h")
(mem:SI (post_inc:SI (reg:SI 15))))
(set (match_operand:SI 1 "high_register_operand" "h")
(mem:SI (post_inc:SI (reg:SI 15))))
(set (match_operand:SI 2 "high_register_operand" "h")
(mem:SI (post_inc:SI (reg:SI 15))))
(set (match_operand:SI 3 "high_register_operand" "h")
(mem:SI (post_inc:SI (reg:SI 15))))]
"fr30_check_multiple_regs (operands, 4, 0)"
"ldm1 (%0, %1, %2, %3)"
[(set_attr "delay_type" "other")]
)
(define_peephole
[(set (match_operand:SI 0 "high_register_operand" "h")
(mem:SI (post_inc:SI (reg:SI 15))))
(set (match_operand:SI 1 "high_register_operand" "h")
(mem:SI (post_inc:SI (reg:SI 15))))
(set (match_operand:SI 2 "high_register_operand" "h")
(mem:SI (post_inc:SI (reg:SI 15))))]
"fr30_check_multiple_regs (operands, 3, 0)"
"ldm1 (%0, %1, %2)"
[(set_attr "delay_type" "other")]
)
(define_peephole
[(set (match_operand:SI 0 "high_register_operand" "h")
(mem:SI (post_inc:SI (reg:SI 15))))
(set (match_operand:SI 1 "high_register_operand" "h")
(mem:SI (post_inc:SI (reg:SI 15))))]
"fr30_check_multiple_regs (operands, 2, 0)"
"ldm1 (%0, %1)"
[(set_attr "delay_type" "other")]
)
(define_peephole
[(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 0 "low_register_operand" "l"))
(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 1 "low_register_operand" "l"))
(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 2 "low_register_operand" "l"))
(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 3 "low_register_operand" "l"))]
"fr30_check_multiple_regs (operands, 4, 1)"
"stm0 (%0, %1, %2, %3)"
[(set_attr "delay_type" "other")]
)
(define_peephole
[(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 0 "low_register_operand" "l"))
(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 1 "low_register_operand" "l"))
(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 2 "low_register_operand" "l"))]
"fr30_check_multiple_regs (operands, 3, 1)"
"stm0 (%0, %1, %2)"
[(set_attr "delay_type" "other")]
)
(define_peephole
[(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 0 "low_register_operand" "l"))
(set (mem:SI (pre_dec:SI (reg:SI 15)))
(match_operand:SI 1 "low_register_operand" "l"))]
"fr30_check_multiple_regs (operands, 2, 1)"
"stm0 (%0, %1)"
[(set_attr "delay_type" "other")]
)
;;}}}
;;{{{ Floating Point Moves
;; Note - Patterns for SF mode moves are compulsory, but
;; patterns for DF are optional, as GCC can synthesize them.
(define_expand "movsf"
[(set (match_operand:SF 0 "general_operand" "")
(match_operand:SF 1 "general_operand" ""))]
""
"{
if (!reload_in_progress && !reload_completed
&& memory_operand (operands[0], SFmode)
&& memory_operand (operands[1], SFmode))
operands[1] = copy_to_mode_reg (SFmode, operands[1]);
}"
)
(define_insn "*movsf_internal"
[(set (match_operand:SF 0 "nonimmediate_operand" "=r,r,red,m,r")
(match_operand:SF 1 "general_operand" "Fn,i,rde,r,rm"))]
""
"*
{
switch (which_alternative)
{
case 0: return \"ldi:32\\t%1, %0\";
case 1: if (TARGET_SMALL_MODEL)
return \"ldi:20\\t%1, %0\";
else
return \"ldi:32\\t%1, %0\";
case 2: return \"mov \\t%1, %0\";
case 3: return \"st \\t%1, %0\";
case 4: return \"ld \\t%1, %0\";
default: gcc_unreachable ();
}
}"
[(set (attr "length") (cond [(eq_attr "alternative" "0") (const_int 6)
(eq_attr "alternative" "1")
(if_then_else (eq_attr "size" "small")
(const_int 4)
(const_int 6))]
(const_int 2)))]
)
(define_insn "*movsf_constant_store"
[(set (match_operand:SF 0 "memory_operand" "=m")
(match_operand:SF 1 "immediate_operand" "F"))]
""
"*
{
const char * ldi_instr;
const char * tmp_reg;
static char buffer[100];
ldi_instr = fr30_const_double_is_zero (operands[1]) ? \"ldi:8\" : \"ldi:32\";
tmp_reg = reg_names [COMPILER_SCRATCH_REGISTER];
sprintf (buffer, \"%s\\t#%%1, %s\\t;\\n\\tst\\t%s, %%0\\t; Created by movsf_constant_store\",
ldi_instr, tmp_reg, tmp_reg);
return buffer;
}"
[(set_attr "length" "8")]
)
;;}}}
;;}}}
;;{{{ Conversions
;; Signed conversions from a smaller integer to a larger integer
(define_insn "extendqisi2"
[(set (match_operand:SI 0 "register_operand" "=r")
(sign_extend:SI (match_operand:QI 1 "register_operand" "0")))]
""
"extsb %0"
)
(define_insn "extendhisi2"
[(set (match_operand:SI 0 "register_operand" "=r")
(sign_extend:SI (match_operand:HI 1 "register_operand" "0")))]
""
"extsh %0"
)
;; Unsigned conversions from a smaller integer to a larger integer
(define_insn "zero_extendqisi2"
[(set (match_operand:SI 0 "register_operand" "=r")
(zero_extend:SI (match_operand:QI 1 "register_operand" "0")))]
""
"extub %0"
)
(define_insn "zero_extendhisi2"
[(set (match_operand:SI 0 "register_operand" "=r")
(zero_extend:SI (match_operand:HI 1 "register_operand" "0")))]
""
"extuh %0"
)
;;}}}
;;{{{ Arithmetic
;;{{{ Addition
;; This is a special pattern just for adjusting the stack size.
(define_insn "add_to_stack"
[(set (reg:SI 15)
(plus:SI (reg:SI 15)
(match_operand:SI 0 "stack_add_operand" "i")))]
""
"addsp %0"
)
;; We need some trickery to be able to handle the addition of
;; large (i.e. outside +/- 16) constants. We need to be able to
;; handle this because reload assumes that it can generate add
;; instructions with arbitrary sized constants.
(define_expand "addsi3"
[(set (match_operand:SI 0 "register_operand" "")
(plus:SI (match_operand:SI 1 "register_operand" "")
(match_operand:SI 2 "nonmemory_operand" "")))]
""
"{
if ( GET_CODE (operands[2]) == REG
|| GET_CODE (operands[2]) == SUBREG)
emit_insn (gen_addsi_regs (operands[0], operands[1], operands[2]));
else if (GET_CODE (operands[2]) != CONST_INT)
emit_insn (gen_addsi_big_int (operands[0], operands[1], operands[2]));
else if (INTVAL (operands[2]) >= -16
&& INTVAL (operands[2]) <= 15
&& (!REG_P (operands[1])
|| !REGNO_PTR_FRAME_P (REGNO (operands[1]))
|| REGNO (operands[1]) == STACK_POINTER_REGNUM))
emit_insn (gen_addsi_small_int (operands[0], operands[1], operands[2]));
else
emit_insn (gen_addsi_big_int (operands[0], operands[1], operands[2]));
DONE;
}"
)
(define_insn "addsi_regs"
[(set (match_operand:SI 0 "register_operand" "=r")
(plus:SI (match_operand:SI 1 "register_operand" "%0")
(match_operand:SI 2 "register_operand" "r")))]
""
"addn %2, %0"
)
;; Do not allow an eliminable register in the source register. It
;; might be eliminated in favor of the stack pointer, probably
;; increasing the offset, and so rendering the instruction illegal.
(define_insn "addsi_small_int"
[(set (match_operand:SI 0 "register_operand" "=r,r")
(plus:SI (match_operand:SI 1 "register_operand" "0,0")
(match_operand:SI 2 "add_immediate_operand" "I,J")))]
"!REG_P (operands[1])
|| !REGNO_PTR_FRAME_P (REGNO (operands[1]))
|| REGNO (operands[1]) == STACK_POINTER_REGNUM"
"@
addn %2, %0
addn2 %2, %0"
)
(define_expand "addsi_big_int"
[(set (match_operand:SI 0 "register_operand" "")
(plus:SI (match_operand:SI 1 "register_operand" "")
(match_operand:SI 2 "immediate_operand" "")))]
""
"{
/* Cope with the possibility that ops 0 and 1 are the same register. */
if (rtx_equal_p (operands[0], operands[1]))
{
if (reload_in_progress || reload_completed)
{
rtx reg = gen_rtx_REG (SImode, 0/*COMPILER_SCRATCH_REGISTER*/);
emit_insn (gen_movsi (reg, operands[2]));
emit_insn (gen_addsi_regs (operands[0], operands[0], reg));
}
else
{
operands[2] = force_reg (SImode, operands[2]);
emit_insn (gen_addsi_regs (operands[0], operands[0], operands[2]));
}
}
else
{
emit_insn (gen_movsi (operands[0], operands[2]));
emit_insn (gen_addsi_regs (operands[0], operands[0], operands[1]));
}
DONE;
}"
)
(define_insn "*addsi_for_reload"
[(set (match_operand:SI 0 "register_operand" "=&r,r,r")
(plus:SI (match_operand:SI 1 "register_operand" "r,r,r")
(match_operand:SI 2 "immediate_operand" "L,M,n")))]
"reload_in_progress || reload_completed"
"@
ldi:8\\t#%2, %0 \\n\\taddn\\t%1, %0
ldi:20\\t#%2, %0 \\n\\taddn\\t%1, %0
ldi:32\\t#%2, %0 \\n\\taddn\\t%1, %0"
[(set_attr "length" "4,6,8")]
)
;;}}}
;;{{{ Subtraction
(define_insn "subsi3"
[(set (match_operand:SI 0 "register_operand" "=r")
(minus:SI (match_operand:SI 1 "register_operand" "0")
(match_operand:SI 2 "register_operand" "r")))]
""
"subn %2, %0"
)
;;}}}
;;{{{ Multiplication
;; Signed multiplication producing 64-bit results from 32-bit inputs
(define_insn "mulsidi3"
[(set (match_operand:DI 0 "register_operand" "=r")
(mult:DI (sign_extend:DI (match_operand:SI 1 "register_operand" "%r"))
(sign_extend:DI (match_operand:SI 2 "register_operand" "r"))))
(clobber (reg:CC 16))]
""
"mul %2, %1\\n\\tmov\\tmdh, %0\\n\\tmov\\tmdl, %p0"
[(set_attr "length" "6")]
)
;; Unsigned multiplication producing 64-bit results from 32-bit inputs
(define_insn "umulsidi3"
[(set (match_operand:DI 0 "register_operand" "=r")
(mult:DI (zero_extend:DI (match_operand:SI 1 "register_operand" "%r"))
(zero_extend:DI (match_operand:SI 2 "register_operand" "r"))))
(clobber (reg:CC 16))]
""
"mulu %2, %1\\n\\tmov\\tmdh, %0\\n\\tmov\\tmdl, %p0"
[(set_attr "length" "6")]
)
;; Signed multiplication producing 32-bit result from 16-bit inputs
(define_insn "mulhisi3"
[(set (match_operand:SI 0 "register_operand" "=r")
(mult:SI (sign_extend:SI (match_operand:HI 1 "register_operand" "%r"))
(sign_extend:SI (match_operand:HI 2 "register_operand" "r"))))
(clobber (reg:CC 16))]
""
"mulh %2, %1\\n\\tmov\\tmdl, %0"
[(set_attr "length" "4")]
)
;; Unsigned multiplication producing 32-bit result from 16-bit inputs
(define_insn "umulhisi3"
[(set (match_operand:SI 0 "register_operand" "=r")
(mult:SI (zero_extend:SI (match_operand:HI 1 "register_operand" "%r"))
(zero_extend:SI (match_operand:HI 2 "register_operand" "r"))))
(clobber (reg:CC 16))]
""
"muluh %2, %1\\n\\tmov\\tmdl, %0"
[(set_attr "length" "4")]
)
;; Signed multiplication producing 32-bit result from 32-bit inputs
(define_insn "mulsi3"
[(set (match_operand:SI 0 "register_operand" "=r")
(mult:SI (match_operand:SI 1 "register_operand" "%r")
(match_operand:SI 2 "register_operand" "r")))
(clobber (reg:CC 16))]
""
"mul %2, %1\\n\\tmov\\tmdl, %0"
[(set_attr "length" "4")]
)
;;}}}
;;}}}
;;{{{ Shifts
;; Arithmetic Shift Left
(define_insn "ashlsi3"
[(set (match_operand:SI 0 "register_operand" "=r,r,r")
(ashift:SI (match_operand:SI 1 "register_operand" "0,0,0")
(match_operand:SI 2 "nonmemory_operand" "r,I,K")))
(clobber (reg:CC 16))]
""
"@
lsl %2, %0
lsl %2, %0
lsl2 %x2, %0"
)
;; Arithmetic Shift Right
(define_insn "ashrsi3"
[(set (match_operand:SI 0 "register_operand" "=r,r,r")
(ashiftrt:SI (match_operand:SI 1 "register_operand" "0,0,0")
(match_operand:SI 2 "nonmemory_operand" "r,I,K")))
(clobber (reg:CC 16))]
""
"@
asr %2, %0
asr %2, %0
asr2 %x2, %0"
)
;; Logical Shift Right
(define_insn "lshrsi3"
[(set (match_operand:SI 0 "register_operand" "=r,r,r")
(lshiftrt:SI (match_operand:SI 1 "register_operand" "0,0,0")
(match_operand:SI 2 "nonmemory_operand" "r,I,K")))
(clobber (reg:CC 16))]
""
"@
lsr %2, %0
lsr %2, %0
lsr2 %x2, %0"
)
;;}}}
;;{{{ Logical Operations
;; Logical AND, 32-bit integers
(define_insn "andsi3"
[(set (match_operand:SI 0 "register_operand" "=r")
(and:SI (match_operand:SI 1 "register_operand" "%r")
(match_operand:SI 2 "register_operand" "0")))
(clobber (reg:CC 16))]
""
"and %1, %0"
)
;; Inclusive OR, 32-bit integers
(define_insn "iorsi3"
[(set (match_operand:SI 0 "register_operand" "=r")
(ior:SI (match_operand:SI 1 "register_operand" "%r")
(match_operand:SI 2 "register_operand" "0")))
(clobber (reg:CC 16))]
""
"or %1, %0"
)
;; Exclusive OR, 32-bit integers
(define_insn "xorsi3"
[(set (match_operand:SI 0 "register_operand" "=r")
(xor:SI (match_operand:SI 1 "register_operand" "%r")
(match_operand:SI 2 "register_operand" "0")))
(clobber (reg:CC 16))]
""
"eor %1, %0"
)
;; One's complement, 32-bit integers
(define_expand "one_cmplsi2"
[(set (match_operand:SI 0 "register_operand" "")
(not:SI (match_operand:SI 1 "register_operand" "")))]
""
"{
if (rtx_equal_p (operands[0], operands[1]))
{
if (reload_in_progress || reload_completed)
{
rtx reg = gen_rtx_REG (SImode, 0/*COMPILER_SCRATCH_REGISTER*/);
emit_insn (gen_movsi (reg, constm1_rtx));
emit_insn (gen_xorsi3 (operands[0], operands[0], reg));
}
else
{
rtx reg = gen_reg_rtx (SImode);
emit_insn (gen_movsi (reg, constm1_rtx));
emit_insn (gen_xorsi3 (operands[0], operands[0], reg));
}
}
else
{
emit_insn (gen_movsi_internal (operands[0], constm1_rtx));
emit_insn (gen_xorsi3 (operands[0], operands[1], operands[0]));
}
DONE;
}"
)
;;}}}
;;{{{ Comparisons
;; The actual comparisons, generated by the cbranch and/or cstore expanders
(define_insn "*cmpsi_internal"
[(set (reg:CC 16)
(compare:CC (match_operand:SI 0 "register_operand" "r,r,r")
(match_operand:SI 1 "nonmemory_operand" "r,I,J")))]
""
"@
cmp %1, %0
cmp %1, %0
cmp2 %1, %0"
)
;;}}}
;;{{{ Branches
;; Define_expands called by the machine independent part of the compiler
;; to allocate a new comparison register
(define_expand "cbranchsi4"
[(set (reg:CC 16)
(compare:CC (match_operand:SI 1 "register_operand" "")
(match_operand:SI 2 "nonmemory_operand" "")))
(set (pc)
(if_then_else (match_operator 0 "ordered_comparison_operator"
[(reg:CC 16) (const_int 0)])
(label_ref (match_operand 3 "" ""))
(pc)))]
""
""
)
;; Actual branches. We must allow for the (label_ref) and the (pc) to be
;; swapped. If they are swapped, it reverses the sense of the branch.
;; This pattern matches the (branch-if-true) branches generated above.
;; It generates two different instruction sequences depending upon how
;; far away the destination is.
;; The calculation for the instruction length is derived as follows:
;; The branch instruction has a 9-bit signed displacement so we have
;; this inequality for the displacement:
;;
;; -256 <= pc < 256
;; or
;; -256 + 256 <= pc + 256 < 256 + 256
;; i.e.
;; 0 <= pc + 256 < 512
;;
;; if we consider the displacement as an unsigned value, then negative
;; displacements become very large positive displacements, and the
;; inequality becomes:
;;
;; pc + 256 < 512
;;
;; In order to allow for the fact that the real branch instruction works
;; from pc + 2, we increase the offset to 258.
;;
;; Note - we do not have to worry about whether the branch is delayed or
;; not, as branch shortening happens after delay slot reorganization.
(define_insn "*branch_true"
[(set (pc)
(if_then_else (match_operator 0 "comparison_operator"
[(reg:CC 16)
(const_int 0)])
(label_ref (match_operand 1 "" ""))
(pc)))]
""
"*
{
if (get_attr_length (insn) == 2)
return \"b%b0%#\\t%l1\";
else
{
static char buffer [100];
const char * tmp_reg;
const char * ldi_insn;
tmp_reg = reg_names [COMPILER_SCRATCH_REGISTER];
ldi_insn = TARGET_SMALL_MODEL ? \"ldi:20\" : \"ldi:32\";
/* The code produced here is, for say the EQ case:
Bne 1f
LDI <label>, r0
JMP r0
1: */
sprintf (buffer,
\"b%%B0\\t1f\\t;\\n\\t%s\\t%%l1, %s\\t;\\n\\tjmp%%#\\t@%s\\t;\\n1:\",
ldi_insn, tmp_reg, tmp_reg);
return buffer;
}
}"
[(set (attr "length") (if_then_else
(ltu
(plus
(minus
(match_dup 1)
(pc))
(const_int 254))
(const_int 506))
(const_int 2)
(if_then_else (eq_attr "size" "small")
(const_int 8)
(const_int 10))))
(set_attr "delay_type" "delayed")]
)
;; This pattern is a duplicate of the previous one, except that the
;; branch occurs if the test is false, so the %B operator is used.
(define_insn "*branch_false"
[(set (pc)
(if_then_else (match_operator 0 "comparison_operator"
[(reg:CC 16)
(const_int 0)])
(pc)
(label_ref (match_operand 1 "" ""))))]
""
"*
{
if (get_attr_length (insn) == 2)
return \"b%B0%#\\t%l1 \";
else
{
static char buffer [100];
const char * tmp_reg;
const char * ldi_insn;
tmp_reg = reg_names [COMPILER_SCRATCH_REGISTER];
ldi_insn = TARGET_SMALL_MODEL ? \"ldi:20\" : \"ldi:32\";
sprintf (buffer,
\"b%%b0\\t1f\\t;\\n\\t%s\\t%%l1, %s\\t;\\n\\tjmp%%#\\t@%s\\t;\\n1:\",
ldi_insn, tmp_reg, tmp_reg);
return buffer;
}
}"
[(set (attr "length") (if_then_else (ltu (plus (minus (match_dup 1) (pc))
(const_int 254))
(const_int 506))
(const_int 2)
(if_then_else (eq_attr "size" "small")
(const_int 8)
(const_int 10))))
(set_attr "delay_type" "delayed")]
)
;;}}}
;;{{{ Calls & Jumps
;; Subroutine call instruction returning no value. Operand 0 is the function
;; to call; operand 1 is the number of bytes of arguments pushed (in mode
;; `SImode', except it is normally a `const_int'); operand 2 is the number of
;; registers used as operands.
(define_insn "call"
[(call (match_operand 0 "call_operand" "Qm")
(match_operand 1 "" "g"))
(clobber (reg:SI 17))]
""
"call%#\\t%0"
[(set_attr "delay_type" "delayed")]
)
;; Subroutine call instruction returning a value. Operand 0 is the hard
;; register in which the value is returned. There are three more operands, the
;; same as the three operands of the `call' instruction (but with numbers
;; increased by one).
;; Subroutines that return `BLKmode' objects use the `call' insn.
(define_insn "call_value"
[(set (match_operand 0 "register_operand" "=r")
(call (match_operand 1 "call_operand" "Qm")
(match_operand 2 "" "g")))
(clobber (reg:SI 17))]
""
"call%#\\t%1"
[(set_attr "delay_type" "delayed")]
)
;; Normal unconditional jump.
;; For a description of the computation of the length
;; attribute see the branch patterns above.
;;
;; Although this instruction really clobbers r0, flow
;; relies on jump being simplejump_p in several places
;; and as r0 is fixed, this doesn't change anything
(define_insn "jump"
[(set (pc) (label_ref (match_operand 0 "" "")))]
""
"*
{
if (get_attr_length (insn) == 2)
return \"bra%#\\t%0\";
else
{
static char buffer [100];
const char * tmp_reg;
const char * ldi_insn;
tmp_reg = reg_names [COMPILER_SCRATCH_REGISTER];
ldi_insn = TARGET_SMALL_MODEL ? \"ldi:20\" : \"ldi:32\";
sprintf (buffer, \"%s\\t%%0, %s\\t;\\n\\tjmp%%#\\t@%s\\t;\",
ldi_insn, tmp_reg, tmp_reg);
return buffer;
}
}"
[(set (attr "length") (if_then_else (ltu (plus (minus (match_dup 0) (pc))
(const_int 254))
(const_int 506))
(const_int 2)
(if_then_else (eq_attr "size" "small")
(const_int 6)
(const_int 8))))
(set_attr "delay_type" "delayed")]
)
;; Indirect jump through a register
(define_insn "indirect_jump"
[(set (pc) (match_operand 0 "pmode_register_operand" "r"))]
""
"jmp%#\\t@%0"
[(set_attr "delay_type" "delayed")]
)
(define_insn "tablejump"
[(set (pc) (match_operand:SI 0 "register_operand" "r"))
(use (label_ref (match_operand 1 "" "")))]
""
"jmp%#\\t@%0"
[(set_attr "delay_type" "delayed")]
)
;;}}}
;;{{{ Function Prologues and Epilogues
;; Called after register allocation to add any instructions needed for the
;; prologue. Using a prologue insn is favored compared to putting all of the
;; instructions in output_function_prologue(), since it allows the scheduler
;; to intermix instructions with the saves of the caller saved registers. In
;; some cases, it might be necessary to emit a barrier instruction as the last
;; insn to prevent such scheduling.
(define_expand "prologue"
[(clobber (const_int 0))]
""
"{
fr30_expand_prologue ();
DONE;
}"
)
;; Called after register allocation to add any instructions needed for the
;; epilogue. Using an epilogue insn is favored compared to putting all of the
;; instructions in output_function_epilogue(), since it allows the scheduler
;; to intermix instructions with the restores of the caller saved registers.
;; In some cases, it might be necessary to emit a barrier instruction as the
;; first insn to prevent such scheduling.
(define_expand "epilogue"
[(return)]
""
"{
fr30_expand_epilogue ();
DONE;
}"
)
(define_insn "return_from_func"
[(return)
(use (reg:SI 17))]
"reload_completed"
"ret%#"
[(set_attr "delay_type" "delayed")]
)
(define_insn "leave_func"
[(set (reg:SI 15) (plus:SI (reg:SI 14) (const_int 4)))
(set (reg:SI 14) (mem:SI (minus:SI (reg:SI 15) (const_int 4))))]
"reload_completed"
"leave"
)
(define_expand "enter_func"
[(parallel
[(set (mem:SI (minus:SI (match_dup 1)
(const_int 4)))
(match_dup 2))
(set (match_dup 2)
(minus:SI (match_dup 1)
(const_int 4)))
(set (match_dup 1)
(minus:SI (match_dup 1)
(match_operand:SI 0 "immediate_operand")))]
)]
""
{
operands[1] = stack_pointer_rtx;
operands[2] = hard_frame_pointer_rtx;
})
(define_insn "*enter_func"
[(set (mem:SI (minus:SI (reg:SI 15)
(const_int 4)))
(reg:SI 14))
(set (reg:SI 14)
(minus:SI (reg:SI 15)
(const_int 4)))
(set (reg:SI 15)
(minus:SI (reg:SI 15)
(match_operand 0 "immediate_operand" "i")))]
"reload_completed"
"enter #%0"
[(set_attr "delay_type" "other")]
)
;;}}}
;;{{{ Miscellaneous
;; No operation, needed in case the user uses -g but not -O.
(define_insn "nop"
[(const_int 0)]
""
"nop"
)
;; Pseudo instruction that prevents the scheduler from moving code above this
;; point.
(define_insn "blockage"
[(unspec_volatile [(const_int 0)] 0)]
""
""
[(set_attr "length" "0")]
)
;;}}}
;; Local Variables:
;; mode: md
;; folded-file: t
;; End: