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;; Copyright (C) 2011-2013 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/>.
;;
;; This file contains ARM instructions that support fixed-point operations.
(define_insn "add<mode>3"
[(set (match_operand:FIXED 0 "s_register_operand" "=r")
(plus:FIXED (match_operand:FIXED 1 "s_register_operand" "r")
(match_operand:FIXED 2 "s_register_operand" "r")))]
"TARGET_32BIT"
"add%?\\t%0, %1, %2"
[(set_attr "predicable" "yes")])
(define_insn "add<mode>3"
[(set (match_operand:ADDSUB 0 "s_register_operand" "=r")
(plus:ADDSUB (match_operand:ADDSUB 1 "s_register_operand" "r")
(match_operand:ADDSUB 2 "s_register_operand" "r")))]
"TARGET_INT_SIMD"
"sadd<qaddsub_suf>%?\\t%0, %1, %2"
[(set_attr "predicable" "yes")])
(define_insn "usadd<mode>3"
[(set (match_operand:UQADDSUB 0 "s_register_operand" "=r")
(us_plus:UQADDSUB (match_operand:UQADDSUB 1 "s_register_operand" "r")
(match_operand:UQADDSUB 2 "s_register_operand" "r")))]
"TARGET_INT_SIMD"
"uqadd<qaddsub_suf>%?\\t%0, %1, %2"
[(set_attr "predicable" "yes")])
(define_insn "ssadd<mode>3"
[(set (match_operand:QADDSUB 0 "s_register_operand" "=r")
(ss_plus:QADDSUB (match_operand:QADDSUB 1 "s_register_operand" "r")
(match_operand:QADDSUB 2 "s_register_operand" "r")))]
"TARGET_INT_SIMD"
"qadd<qaddsub_suf>%?\\t%0, %1, %2"
[(set_attr "predicable" "yes")])
(define_insn "sub<mode>3"
[(set (match_operand:FIXED 0 "s_register_operand" "=r")
(minus:FIXED (match_operand:FIXED 1 "s_register_operand" "r")
(match_operand:FIXED 2 "s_register_operand" "r")))]
"TARGET_32BIT"
"sub%?\\t%0, %1, %2"
[(set_attr "predicable" "yes")])
(define_insn "sub<mode>3"
[(set (match_operand:ADDSUB 0 "s_register_operand" "=r")
(minus:ADDSUB (match_operand:ADDSUB 1 "s_register_operand" "r")
(match_operand:ADDSUB 2 "s_register_operand" "r")))]
"TARGET_INT_SIMD"
"ssub<qaddsub_suf>%?\\t%0, %1, %2"
[(set_attr "predicable" "yes")])
(define_insn "ussub<mode>3"
[(set (match_operand:UQADDSUB 0 "s_register_operand" "=r")
(us_minus:UQADDSUB
(match_operand:UQADDSUB 1 "s_register_operand" "r")
(match_operand:UQADDSUB 2 "s_register_operand" "r")))]
"TARGET_INT_SIMD"
"uqsub<qaddsub_suf>%?\\t%0, %1, %2"
[(set_attr "predicable" "yes")])
(define_insn "sssub<mode>3"
[(set (match_operand:QADDSUB 0 "s_register_operand" "=r")
(ss_minus:QADDSUB (match_operand:QADDSUB 1 "s_register_operand" "r")
(match_operand:QADDSUB 2 "s_register_operand" "r")))]
"TARGET_INT_SIMD"
"qsub<qaddsub_suf>%?\\t%0, %1, %2"
[(set_attr "predicable" "yes")])
;; Fractional multiplies.
; Note: none of these do any rounding.
(define_expand "mulqq3"
[(set (match_operand:QQ 0 "s_register_operand" "")
(mult:QQ (match_operand:QQ 1 "s_register_operand" "")
(match_operand:QQ 2 "s_register_operand" "")))]
"TARGET_DSP_MULTIPLY && arm_arch_thumb2"
{
rtx tmp1 = gen_reg_rtx (HImode);
rtx tmp2 = gen_reg_rtx (HImode);
rtx tmp3 = gen_reg_rtx (SImode);
emit_insn (gen_extendqihi2 (tmp1, gen_lowpart (QImode, operands[1])));
emit_insn (gen_extendqihi2 (tmp2, gen_lowpart (QImode, operands[2])));
emit_insn (gen_mulhisi3 (tmp3, tmp1, tmp2));
emit_insn (gen_extv (gen_lowpart (SImode, operands[0]), tmp3, GEN_INT (8),
GEN_INT (7)));
DONE;
})
(define_expand "mulhq3"
[(set (match_operand:HQ 0 "s_register_operand" "")
(mult:HQ (match_operand:HQ 1 "s_register_operand" "")
(match_operand:HQ 2 "s_register_operand" "")))]
"TARGET_DSP_MULTIPLY && arm_arch_thumb2"
{
rtx tmp = gen_reg_rtx (SImode);
emit_insn (gen_mulhisi3 (tmp, gen_lowpart (HImode, operands[1]),
gen_lowpart (HImode, operands[2])));
/* We're doing a s.15 * s.15 multiplication, getting an s.30 result. Extract
an s.15 value from that. This won't overflow/saturate for _Fract
values. */
emit_insn (gen_extv (gen_lowpart (SImode, operands[0]), tmp,
GEN_INT (16), GEN_INT (15)));
DONE;
})
(define_expand "mulsq3"
[(set (match_operand:SQ 0 "s_register_operand" "")
(mult:SQ (match_operand:SQ 1 "s_register_operand" "")
(match_operand:SQ 2 "s_register_operand" "")))]
"TARGET_32BIT && arm_arch3m"
{
rtx tmp1 = gen_reg_rtx (DImode);
rtx tmp2 = gen_reg_rtx (SImode);
rtx tmp3 = gen_reg_rtx (SImode);
/* s.31 * s.31 -> s.62 multiplication. */
emit_insn (gen_mulsidi3 (tmp1, gen_lowpart (SImode, operands[1]),
gen_lowpart (SImode, operands[2])));
emit_insn (gen_lshrsi3 (tmp2, gen_lowpart (SImode, tmp1), GEN_INT (31)));
emit_insn (gen_ashlsi3 (tmp3, gen_highpart (SImode, tmp1), GEN_INT (1)));
emit_insn (gen_iorsi3 (gen_lowpart (SImode, operands[0]), tmp2, tmp3));
DONE;
})
;; Accumulator multiplies.
(define_expand "mulsa3"
[(set (match_operand:SA 0 "s_register_operand" "")
(mult:SA (match_operand:SA 1 "s_register_operand" "")
(match_operand:SA 2 "s_register_operand" "")))]
"TARGET_32BIT && arm_arch3m"
{
rtx tmp1 = gen_reg_rtx (DImode);
rtx tmp2 = gen_reg_rtx (SImode);
rtx tmp3 = gen_reg_rtx (SImode);
emit_insn (gen_mulsidi3 (tmp1, gen_lowpart (SImode, operands[1]),
gen_lowpart (SImode, operands[2])));
emit_insn (gen_lshrsi3 (tmp2, gen_lowpart (SImode, tmp1), GEN_INT (15)));
emit_insn (gen_ashlsi3 (tmp3, gen_highpart (SImode, tmp1), GEN_INT (17)));
emit_insn (gen_iorsi3 (gen_lowpart (SImode, operands[0]), tmp2, tmp3));
DONE;
})
(define_expand "mulusa3"
[(set (match_operand:USA 0 "s_register_operand" "")
(mult:USA (match_operand:USA 1 "s_register_operand" "")
(match_operand:USA 2 "s_register_operand" "")))]
"TARGET_32BIT && arm_arch3m"
{
rtx tmp1 = gen_reg_rtx (DImode);
rtx tmp2 = gen_reg_rtx (SImode);
rtx tmp3 = gen_reg_rtx (SImode);
emit_insn (gen_umulsidi3 (tmp1, gen_lowpart (SImode, operands[1]),
gen_lowpart (SImode, operands[2])));
emit_insn (gen_lshrsi3 (tmp2, gen_lowpart (SImode, tmp1), GEN_INT (16)));
emit_insn (gen_ashlsi3 (tmp3, gen_highpart (SImode, tmp1), GEN_INT (16)));
emit_insn (gen_iorsi3 (gen_lowpart (SImode, operands[0]), tmp2, tmp3));
DONE;
})
;; The code sequence emitted by this insn pattern uses the Q flag, which GCC
;; doesn't generally know about, so we don't bother expanding to individual
;; instructions. It may be better to just use an out-of-line asm libcall for
;; this.
(define_insn "ssmulsa3"
[(set (match_operand:SA 0 "s_register_operand" "=r")
(ss_mult:SA (match_operand:SA 1 "s_register_operand" "r")
(match_operand:SA 2 "s_register_operand" "r")))
(clobber (match_scratch:DI 3 "=r"))
(clobber (match_scratch:SI 4 "=r"))
(clobber (reg:CC CC_REGNUM))]
"TARGET_32BIT && arm_arch6"
{
/* s16.15 * s16.15 -> s32.30. */
output_asm_insn ("smull\\t%Q3, %R3, %1, %2", operands);
if (TARGET_ARM)
output_asm_insn ("msr\\tAPSR_nzcvq, #0", operands);
else
{
output_asm_insn ("mov\\t%4, #0", operands);
output_asm_insn ("msr\\tAPSR_nzcvq, %4", operands);
}
/* We have:
31 high word 0 31 low word 0
[ S i i .... i i i ] [ i f f f ... f f ]
|
v
[ S i ... i f ... f f ]
Need 16 integral bits, so saturate at 15th bit of high word. */
output_asm_insn ("ssat\\t%R3, #15, %R3", operands);
output_asm_insn ("mrs\\t%4, APSR", operands);
output_asm_insn ("tst\\t%4, #1<<27", operands);
if (TARGET_THUMB2)
output_asm_insn ("it\\tne", operands);
output_asm_insn ("mvnne\\t%Q3, %R3, asr #32", operands);
output_asm_insn ("mov\\t%0, %Q3, lsr #15", operands);
output_asm_insn ("orr\\t%0, %0, %R3, asl #17", operands);
return "";
}
[(set_attr "conds" "clob")
(set (attr "length")
(if_then_else (eq_attr "is_thumb" "yes")
(const_int 38)
(const_int 32)))])
;; Same goes for this.
(define_insn "usmulusa3"
[(set (match_operand:USA 0 "s_register_operand" "=r")
(us_mult:USA (match_operand:USA 1 "s_register_operand" "r")
(match_operand:USA 2 "s_register_operand" "r")))
(clobber (match_scratch:DI 3 "=r"))
(clobber (match_scratch:SI 4 "=r"))
(clobber (reg:CC CC_REGNUM))]
"TARGET_32BIT && arm_arch6"
{
/* 16.16 * 16.16 -> 32.32. */
output_asm_insn ("umull\\t%Q3, %R3, %1, %2", operands);
if (TARGET_ARM)
output_asm_insn ("msr\\tAPSR_nzcvq, #0", operands);
else
{
output_asm_insn ("mov\\t%4, #0", operands);
output_asm_insn ("msr\\tAPSR_nzcvq, %4", operands);
}
/* We have:
31 high word 0 31 low word 0
[ i i i .... i i i ] [ f f f f ... f f ]
|
v
[ i i ... i f ... f f ]
Need 16 integral bits, so saturate at 16th bit of high word. */
output_asm_insn ("usat\\t%R3, #16, %R3", operands);
output_asm_insn ("mrs\\t%4, APSR", operands);
output_asm_insn ("tst\\t%4, #1<<27", operands);
if (TARGET_THUMB2)
output_asm_insn ("it\\tne", operands);
output_asm_insn ("sbfxne\\t%Q3, %R3, #15, #1", operands);
output_asm_insn ("lsr\\t%0, %Q3, #16", operands);
output_asm_insn ("orr\\t%0, %0, %R3, asl #16", operands);
return "";
}
[(set_attr "conds" "clob")
(set (attr "length")
(if_then_else (eq_attr "is_thumb" "yes")
(const_int 38)
(const_int 32)))])
(define_expand "mulha3"
[(set (match_operand:HA 0 "s_register_operand" "")
(mult:HA (match_operand:HA 1 "s_register_operand" "")
(match_operand:HA 2 "s_register_operand" "")))]
"TARGET_DSP_MULTIPLY && arm_arch_thumb2"
{
rtx tmp = gen_reg_rtx (SImode);
emit_insn (gen_mulhisi3 (tmp, gen_lowpart (HImode, operands[1]),
gen_lowpart (HImode, operands[2])));
emit_insn (gen_extv (gen_lowpart (SImode, operands[0]), tmp, GEN_INT (16),
GEN_INT (7)));
DONE;
})
(define_expand "muluha3"
[(set (match_operand:UHA 0 "s_register_operand" "")
(mult:UHA (match_operand:UHA 1 "s_register_operand" "")
(match_operand:UHA 2 "s_register_operand" "")))]
"TARGET_DSP_MULTIPLY"
{
rtx tmp1 = gen_reg_rtx (SImode);
rtx tmp2 = gen_reg_rtx (SImode);
rtx tmp3 = gen_reg_rtx (SImode);
/* 8.8 * 8.8 -> 16.16 multiply. */
emit_insn (gen_zero_extendhisi2 (tmp1, gen_lowpart (HImode, operands[1])));
emit_insn (gen_zero_extendhisi2 (tmp2, gen_lowpart (HImode, operands[2])));
emit_insn (gen_mulsi3 (tmp3, tmp1, tmp2));
emit_insn (gen_extzv (gen_lowpart (SImode, operands[0]), tmp3,
GEN_INT (16), GEN_INT (8)));
DONE;
})
(define_expand "ssmulha3"
[(set (match_operand:HA 0 "s_register_operand" "")
(ss_mult:HA (match_operand:HA 1 "s_register_operand" "")
(match_operand:HA 2 "s_register_operand" "")))]
"TARGET_32BIT && TARGET_DSP_MULTIPLY && arm_arch6"
{
rtx tmp = gen_reg_rtx (SImode);
rtx rshift;
emit_insn (gen_mulhisi3 (tmp, gen_lowpart (HImode, operands[1]),
gen_lowpart (HImode, operands[2])));
rshift = gen_rtx_ASHIFTRT (SImode, tmp, GEN_INT (7));
emit_insn (gen_rtx_SET (VOIDmode, gen_lowpart (HImode, operands[0]),
gen_rtx_SS_TRUNCATE (HImode, rshift)));
DONE;
})
(define_expand "usmuluha3"
[(set (match_operand:UHA 0 "s_register_operand" "")
(us_mult:UHA (match_operand:UHA 1 "s_register_operand" "")
(match_operand:UHA 2 "s_register_operand" "")))]
"TARGET_INT_SIMD"
{
rtx tmp1 = gen_reg_rtx (SImode);
rtx tmp2 = gen_reg_rtx (SImode);
rtx tmp3 = gen_reg_rtx (SImode);
rtx rshift_tmp = gen_reg_rtx (SImode);
/* Note: there's no smul[bt][bt] equivalent for unsigned multiplies. Use a
normal 32x32->32-bit multiply instead. */
emit_insn (gen_zero_extendhisi2 (tmp1, gen_lowpart (HImode, operands[1])));
emit_insn (gen_zero_extendhisi2 (tmp2, gen_lowpart (HImode, operands[2])));
emit_insn (gen_mulsi3 (tmp3, tmp1, tmp2));
/* The operand to "usat" is signed, so we cannot use the "..., asr #8"
form of that instruction since the multiplication result TMP3 may have the
top bit set, thus be negative and saturate to zero. Use a separate
logical right-shift instead. */
emit_insn (gen_lshrsi3 (rshift_tmp, tmp3, GEN_INT (8)));
emit_insn (gen_arm_usatsihi (gen_lowpart (HImode, operands[0]), rshift_tmp));
DONE;
})
(define_insn "arm_ssatsihi_shift"
[(set (match_operand:HI 0 "s_register_operand" "=r")
(ss_truncate:HI (match_operator:SI 1 "sat_shift_operator"
[(match_operand:SI 2 "s_register_operand" "r")
(match_operand:SI 3 "immediate_operand" "I")])))]
"TARGET_32BIT && arm_arch6"
"ssat%?\\t%0, #16, %2%S1"
[(set_attr "predicable" "yes")
(set_attr "insn" "sat")
(set_attr "shift" "1")
(set_attr "type" "alu_shift")])
(define_insn "arm_usatsihi"
[(set (match_operand:HI 0 "s_register_operand" "=r")
(us_truncate:HI (match_operand:SI 1 "s_register_operand")))]
"TARGET_INT_SIMD"
"usat%?\\t%0, #16, %1"
[(set_attr "predicable" "yes")
(set_attr "insn" "sat")])
|
