ARC64 wiki

ARC64 status

Supported addressing modes

Addressing	Type	Example
Direct	LD/ST	ld Ra,[@Symbol/32-bit known address]
Indirect	LD/ST	ld Ra,[Rb]
Index/Offset	LD/ST	ld Ra,[Rb+s9]
Scalled Offset	LD/ST	ld.as Ra,[Rb+s9]
Index/Register	LD	ld Ra,[Rb + Ri]
Scalled Register	LD	ld.as Ra,[Rb + Ri]
Pre-modify	LD/ST	ld.a Ra,[Rb + s9]
Post-modify	LD/ST	ld.ab Ra,[Rb + s9]

Memory models and call instructions

Model	Predicated call	Binds locally	Symbol Ref	Register Ref
small	bl/b jl/j	bl/b	bl/b	jl/j
medium	only via reg	bl/b	bl/b	jl/j
large	only via reg	bl/b	via jl/j	jl/j

Memory models and addresses types

Type	Small	Medium	Large
non-pic	pcl-rel	pc-rel	HI/LO
non-pic (weak)	HI/LO	HI/LO	HI/LO
pic	N.A.	GOT32	TBD
pic (local)	N.A.	pc-rel	pc-rel

Conditional execution

Conditional execution is supported for all the instructions marked so in the ARC64 instruction support table. The predicated return instructions (i.e.jcc [blink]) are generated only with a ifcvt.c mainline patch.

Compare with zero.

Most of ARC64 instructions accept .f flag which implements (mostly) a compare with zero of the resulted operations. These patterns are supported by the compiler via combiner pass.

Overview of ARC64 instructions support

Mnemonic	Type	short	predicated	normal
abs	ARITH	1	N.A.	1
absl	ARITH	N.A.		1
adc	ARITH			Not used
adcl	ARITH	N.A.		1
add	ARITH	1	1	1
add1	ARITH	1		1
add1l	ARITH	N.A.		1
add2	ARITH	1		1
add2l	ARITH	N.A.		1
add3	ARITH	1		1
add3l	ARITH	N.A.		1
addhl	ARITH	1		1
addl	ARITH	N.A.	1	1
aex	CORE_CTRL	N.A.	N.A.	builtin
aexl	CORE_CTRL	N.A.	N.A.	builtin
and	LOGIC		1	1
andl	LOGIC	N.A.	1	1
asl	LOGIC		1	1
asll	LOGIC		1	1
asr	LOGIC		1	1
asr16	LOGIC
asr8	LOGIC
asrl	LOGIC		1	1
b	JUMP	1	1	1
bbit0	JUMP
bbit1	JUMP
bclr	LOGIC
bclrl	LOGIC
bi	JUMP
bic	LOGIC	1		1
bicl	LOGIC	N.A.		1
bih	JUMP
bl	JUMP	Linker	1	1
bmsk	LOGIC
bmskl	LOGIC	N.A.
bmskn	LOGIC
bmsknl	LOGIC	N.A.
breq	JUMP		0	0
breql	JUMP	N.A.	0	0
brge	JUMP		0	0
brgel	JUMP	N.A.	0	0
brhs	JUMP		0	0
brhsl	JUMP	N.A.	0	0
brk	CORE_CTRL	N.A.	N.A.	builtin
brlo	JUMP		0	0
brlol	JUMP	N.A.	0	0
brlt	JUMP		0	0
brltl	JUMP	N.A.	0	1
brne	JUMP		0	0
brnel	JUMP	N.A.	0	0
bset	LOGIC	N.A.		1
bsetl	LOGIC	N.A.		1
btst	COMPARE	1	Ignore	1
btstl	COMPARE	N.A.	Ignore	1
bxor	LOGIC	N.A.		1
bxorl	LOGIC	N.A.		1
clri	CORE_CTRL	N.A.	N.A.
cmp	COMPARE	1	0	1
cmpl	COMPARE	N.A.		1
dbnz	JUMP	N.A.	N.A.	1
div	ARITH	N.A.		1
divl	ARITH	N.A.		1
divu	ARITH	N.A.		1
divul	ARITH	N.A.		1
dmb	CORE_CTRL	N.A.
dsync	CORE_CTRL	N.A.
ex	CORE_CTRL	N.A.
exl	CORE_CTRL	N.A.
extb	MOVE	N.A.	1	1
exth	MOVE	N.A.	1	1
ffs	LOGIC	N.A.	N.A.
ffsl	LOGIC	N.A.	N.A.
flag	CORE_CTRL	N.A.	N.A.
fls	LOGIC	N.A.	N.A.
flsl	LOGIC	N.A.	N.A.
j	JUMP	1	1	1
jl	JUMP	1	1	1
kflag	CORE_CTRL	N.A.	N.A.
ld	MOVE		N.A.	1
llock	ATOMIC	N.A.	N.A.	1
llockl	ATOMIC	N.A.	N.A.	1
lr	CORE_CTRL	N.A.	N.A.	1
lrl	CORE_CTRL	N.A.	N.A.
lsl16	LOGIC
lsl8	LOGIC
lsr	LOGIC		1	1
lsr16	LOGIC
lsr8	LOGIC
lsrl	LOGIC	N.A.	1	1
lstl	LOGIC	N.A.
max	ARITH	N.A.	1	1
maxl	ARITH	N.A.	1	1
min	ARITH	N.A.	1	1
minl	ARITH	N.A.	1	1
mov	MOVE	1	1	1
movhl	MOVE	1		1
movl	MOVE	1	1	1
mpy	ARITH	1	1	1
mpyl	ARITH	N.A.	1	1
mpymul	ARITH	N.A.		1
mpym	ARITH	N.A.		1
mpyml	ARITH	N.A.		1
mpymsul	ARITH	N.A.		1
mpymu	ARITH	N.A.		1
mpyu	ARITH	1		1
mpyuw	ARITH	1	1	1
mpyw	ARITH	1	1	1
mpywhfl	ARITH
mpywhflr	ARITH
mpywhfm	ARITH
mpywhfmr	ARITH
mpywhkl	ARITH
mpywhkul	ARITH
mpywhl	ARITH
mpywhul	ARITH
neg	ARITH	N.A.		1
nop	CORE_CTRL	1	N.A.	N.A.
norm	LOGIC
normh	LOGIC
norml	LOGIC
not	LOGIC	1		1
notl	LOGIC	N.A.		1
or	LOGIC	1	1	1
orl	LOGIC	N.A.	1	1
rcmp	COMPARE	N.A.	Ignore	1
rcmpl	COMPARE	N.A.	Ignore	1
rem	ARITH	N.A.		1
reml	ARITH	N.A.		1
remu	ARITH	N.A.		1
remul	ARITH	N.A.		1
rlc	LOGIC
rol	LOGIC	N.A.		1
rol8	LOGIC	N.A.		1
ror	LOGIC	N.A.	1	1
ror8	LOGIC	N.A.		1
rrc	LOGIC
rsub	ARITH	N.A.		1
rtie	CORE_CTRL
sbc	ARITH
sbcl	ARITH	N.A.		1
scond	ATOMIC	N.A.	N.A.	1
scondl	ATOMIC	N.A.	N.A.	1
seteq	COMPARE	N.A.	1	1
seteql	COMPARE	N.A.	1	1
setge	COMPARE	N.A.	1	1
setgel	COMPARE	N.A.	1	1
setgt	COMPARE	N.A.	1	1
setgtl	COMPARE	N.A.	1	1
seths	COMPARE	N.A.	1	1
sethsl	COMPARE	N.A.	1	1
seti	CORE_CTRL
setle	COMPARE	N.A.	1	1
setlel	COMPARE	N.A.	1	1
setlo	COMPARE	N.A.	1	1
setlol	COMPARE	N.A.	1	1
setlt	COMPARE	N.A.	1	1
setltl	COMPARE	N.A.	1	1
setne	COMPARE	N.A.	1	1
setnel	COMPARE	N.A.	1	1
sexb	MOVE	1	1	1
sexbl	MOVE	N.A.		1
sexh	MOVE	1	1	1
sexhl	MOVE	N.A.		1
sexwl	MOVE	N.A.		1
sleep	CORE_CTRL
sqrt	ARITH
sr	CORE_CTRL	N.A.	N.A.	1
srl	CORE_CTRL	N.A.	N.A.
st	MOVE		N.A.	1
sub	ARITH		1	1
sub1	ARITH	N.A.		1
sub1l	ARITH	N.A.		1
sub2	ARITH	N.A.		1
sub2l	ARITH	N.A.		1
sub3	ARITH	N.A.		1
sub3l	ARITH	N.A.		1
subl	ARITH		1	1
swap	LOGIC
swape	LOGIC
swapel	LOGIC
swapl	LOGIC
swi	CORE_CTRL
sync	CORE_CTRL
tst	COMPARE	1	N.A.	1
tstl	COMPARE	N.A.	N.A.	1
umaxl	ARITH	N.A.
uminl	ARITH	N.A.
wevt	ATOMIC
wlfc	ATOMIC
xbfu	LOGIC	N.A.		1
xbful	LOGIC	N.A.		1
xor	LOGIC	1	1	1
xorl	LOGIC	N.A.	1	1