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cmd/asm: add arm64 instructions for math optimization

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Add arm64 HW instructions FMADDD, FMADDS, FMSUBD, FMSUBS, FNMADDD, FNMADDS,
FNMSUBD, FNMSUBS, VFMLA, VFMLS, VMOV (element) for math optimization.

Add check on register element index and test cases.

Change-Id: Ice07c50b1a02d488ad2cde2a4e8aea93f3e3afff
Reviewed-on: https://go-review.googlesource.com/90876
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
erifan01 2018-01-26 10:18:50 +00:00 committed by Brad Fitzpatrick
parent c18ff18465
commit f5de42001d
7 changed files with 314 additions and 48 deletions
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21
src/cmd/asm/internal/arch/arm64.go
View File

@ -178,18 +178,39 @@ func ARM64RegisterExtension(a *obj.Addr, ext string, reg, num int16, isAmount, i
a.Reg = arm64.REG_SXTX + (reg & 31) + int16(num<<5)
a.Offset = int64(((rm & 31) << 16) | (7 << 13) | (uint32(num) << 10))
case "B8":
if isIndex {
return errors.New("invalid register extension")
}
a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_8B & 15) << 5)
case "B16":
if isIndex {
return errors.New("invalid register extension")
}
a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_16B & 15) << 5)
case "H4":
if isIndex {
return errors.New("invalid register extension")
}
a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_4H & 15) << 5)
case "H8":
if isIndex {
return errors.New("invalid register extension")
}
a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_8H & 15) << 5)
case "S2":
if isIndex {
return errors.New("invalid register extension")
}
a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_2S & 15) << 5)
case "S4":
if isIndex {
return errors.New("invalid register extension")
}
a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_4S & 15) << 5)
case "D2":
if isIndex {
return errors.New("invalid register extension")
}
a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_2D & 15) << 5)
case "B":
if !isIndex {

19
src/cmd/asm/internal/asm/testdata/arm64.s vendored
View File

@ -68,6 +68,12 @@ TEXT foo(SB), DUPOK|NOSPLIT, $-8
VADD V1, V3, V3 // 6384e15e
VSUB V12, V30, V30 // de87ec7e
VSUB V12, V20, V30 // 9e86ec7e
VFMLA V1.D2, V12.D2, V1.D2 // 81cd614e
VFMLA V1.S2, V12.S2, V1.S2 // 81cd210e
VFMLA V1.S4, V12.S4, V1.S4 // 81cd214e
VFMLS V1.D2, V12.D2, V1.D2 // 81cde14e
VFMLS V1.S2, V12.S2, V1.S2 // 81cda10e
VFMLS V1.S4, V12.S4, V1.S4 // 81cda14e
// LTYPE1 imsr ',' spreg ','
// {
@ -212,6 +218,10 @@ TEXT foo(SB), DUPOK|NOSPLIT, $-8
VMOV R22, V11.D2 // cb0e084e
VMOV V2.B16, V4.B16 // 441ca24e
VMOV V20.S[0], V20 // 9406045e
VMOV V12.D[0], V12.D[1] // 8c05186e
VMOV V10.S[0], V12.S[1] // 4c050c6e
VMOV V9.H[0], V12.H[1] // 2c05066e
VMOV V8.B[0], V12.B[1] // 0c05036e
VREV32 V5.B16, V5.B16 // a508206e
VDUP V19.S[0], V17.S4 // 7106044e
//
@ -367,6 +377,15 @@ again:
// }
// MADD R1, R2, R3, R4
FMADDS F1, F3, F2, F4 // 440c011f
FMADDD F4, F5, F4, F4 // 8414441f
FMSUBS F13, F21, F13, F19 // b3d50d1f
FMSUBD F11, F7, F15, F31 // ff9d4b1f
FNMADDS F1, F3, F2, F4 // 440c211f
FNMADDD F1, F3, F2, F4 // 440c611f
FNMSUBS F1, F3, F2, F4 // 448c211f
FNMSUBD F1, F3, F2, F4 // 448c611f
// DMB, HINT
//
// LDMB imm

38
src/cmd/asm/internal/asm/testdata/arm64error.s vendored
View File

@ -12,4 +12,42 @@ TEXT errors(SB),$0
VLD1 8(R8)(R13), [V2.B16] // ERROR "illegal combination"
ADD R1.UXTB<<5, R2, R3 // ERROR "shift amount out of range 0 to 4"
ADDS R1.UXTX<<7, R2, R3 // ERROR "shift amount out of range 0 to 4"
VMOV V8.D[2], V12.D[1] // ERROR "register element index out of range 0 to 1"
VMOV V8.S[4], V12.S[1] // ERROR "register element index out of range 0 to 3"
VMOV V8.H[8], V12.H[1] // ERROR "register element index out of range 0 to 7"
VMOV V8.B[16], V12.B[1] // ERROR "register element index out of range 0 to 15"
VMOV V8.D[0], V12.S[1] // ERROR "operand mismatch"
VMOV V8.D[0], V12.H[1] // ERROR "operand mismatch"
VMOV V8.D[0], V12.B[1] // ERROR "operand mismatch"
VMOV V8.S[0], V12.H[1] // ERROR "operand mismatch"
VMOV V8.S[0], V12.B[1] // ERROR "operand mismatch"
VMOV V8.H[0], V12.B[1] // ERROR "operand mismatch"
VMOV V8.B[16], R3 // ERROR "register element index out of range 0 to 15"
VMOV V8.H[9], R3 // ERROR "register element index out of range 0 to 7"
VMOV V8.S[4], R3 // ERROR "register element index out of range 0 to 3"
VMOV V8.D[2], R3 // ERROR "register element index out of range 0 to 1"
VDUP V8.B[16], R3.B16 // ERROR "register element index out of range 0 to 15"
VDUP V8.B[17], R3.B8 // ERROR "register element index out of range 0 to 15"
VDUP V8.H[9], R3.H4 // ERROR "register element index out of range 0 to 7"
VDUP V8.H[9], R3.H8 // ERROR "register element index out of range 0 to 7"
VDUP V8.S[4], R3.S2 // ERROR "register element index out of range 0 to 3"
VDUP V8.S[4], R3.S4 // ERROR "register element index out of range 0 to 3"
VDUP V8.D[2], R3.D2 // ERROR "register element index out of range 0 to 1"
VFMLA V1.D2, V12.D2, V3.S2 // ERROR "operand mismatch"
VFMLA V1.S2, V12.S2, V3.D2 // ERROR "operand mismatch"
VFMLA V1.S4, V12.S2, V3.D2 // ERROR "operand mismatch"
VFMLA V1.H4, V12.H4, V3.D2 // ERROR "operand mismatch"
VFMLS V1.S2, V12.S2, V3.S4 // ERROR "operand mismatch"
VFMLS V1.S2, V12.D2, V3.S4 // ERROR "operand mismatch"
VFMLS V1.S2, V12.S4, V3.D2 // ERROR "operand mismatch"
VFMLA V1.B8, V12.B8, V3.B8 // ERROR "invalid arrangement"
VFMLA V1.B16, V12.B16, V3.B16 // ERROR "invalid arrangement"
VFMLA V1.H4, V12.H4, V3.H4 // ERROR "invalid arrangement"
VFMLA V1.H8, V12.H8, V3.H8 // ERROR "invalid arrangement"
VFMLA V1.H4, V12.H4, V3.H4 // ERROR "invalid arrangement"
VFMLS V1.B8, V12.B8, V3.B8 // ERROR "invalid arrangement"
VFMLS V1.B16, V12.B16, V3.B16 // ERROR "invalid arrangement"
VFMLS V1.H4, V12.H4, V3.H4 // ERROR "invalid arrangement"
VFMLS V1.H8, V12.H8, V3.H8 // ERROR "invalid arrangement"
VFMLS V1.H4, V12.H4, V3.H4 // ERROR "invalid arrangement"
RET

2
src/cmd/internal/obj/arm64/a.out.go
View File

@ -766,6 +766,8 @@ const (
AVMOVI
AVUADDLV
AVSUB
AVFMLA
AVFMLS
ALAST
AB = obj.AJMP
ABL = obj.ACALL

2
src/cmd/internal/obj/arm64/anames.go
View File

@ -383,5 +383,7 @@ var Anames = []string{
"VMOVI",
"VUADDLV",
"VSUB",
"VFMLA",
"VFMLS",
"LAST",
}

188
src/cmd/internal/obj/arm64/asm7.go
View File

@ -146,6 +146,10 @@ func FPOP2S(m uint32, s uint32, type_ uint32, op uint32) uint32 {
return m<<31 | s<<29 | 0x1E<<24 | type_<<22 | 1<<21 | op<<12 | 2<<10
}
func FPOP3S(m uint32, s uint32, type_ uint32, op uint32, op2 uint32) uint32 {
return m<<31 | s<<29 | 0x1F<<24 | type_<<22 | op<<21 | op2<<15
}
func FPCVTI(sf uint32, s uint32, type_ uint32, rmode uint32, op uint32) uint32 {
return sf<<31 | s<<29 | 0x1E<<24 | type_<<22 | 1<<21 | rmode<<19 | op<<16 | 0<<10
}
@ -539,6 +543,7 @@ var optab = []Optab{
{AFADDS, C_FREG, C_FREG, C_FREG, 54, 4, 0, 0, 0},
{AFADDS, C_FCON, C_NONE, C_FREG, 54, 4, 0, 0, 0},
{AFADDS, C_FCON, C_FREG, C_FREG, 54, 4, 0, 0, 0},
{AFMSUBD, C_FREG, C_FREG, C_FREG, 15, 4, 0, 0, 0},
{AFMOVS, C_FCON, C_NONE, C_FREG, 54, 4, 0, 0, 0},
{AFMOVS, C_FREG, C_NONE, C_FREG, 54, 4, 0, 0, 0},
{AFMOVD, C_FCON, C_NONE, C_FREG, 54, 4, 0, 0, 0},
@ -589,6 +594,7 @@ var optab = []Optab{
{AVLD1, C_ROFF, C_NONE, C_LIST, 81, 4, 0, 0, C_XPOST},
{AVMOV, C_ELEM, C_NONE, C_REG, 73, 4, 0, 0, 0},
{AVMOV, C_REG, C_NONE, C_ARNG, 82, 4, 0, 0, 0},
{AVMOV, C_ELEM, C_NONE, C_ELEM, 92, 4, 0, 0, 0},
{AVMOV, C_ARNG, C_NONE, C_ARNG, 83, 4, 0, 0, 0},
{AVMOV, C_REG, C_NONE, C_ELEM, 78, 4, 0, 0, 0},
{AVMOV, C_ELEM, C_NONE, C_VREG, 80, 4, 0, 0, 0},
@ -600,6 +606,7 @@ var optab = []Optab{
{AVADDV, C_ARNG, C_NONE, C_VREG, 85, 4, 0, 0, 0},
{AVCNT, C_ARNG, C_NONE, C_ARNG, 29, 4, 0, 0, 0},
{AVMOVI, C_ADDCON, C_NONE, C_ARNG, 86, 4, 0, 0, 0},
{AVFMLA, C_ARNG, C_ARNG, C_ARNG, 72, 4, 0, 0, 0},
{obj.AUNDEF, C_NONE, C_NONE, C_NONE, 90, 4, 0, 0, 0},
{obj.APCDATA, C_VCON, C_NONE, C_VCON, 0, 0, 0, 0, 0},
@ -1987,6 +1994,15 @@ func buildop(ctxt *obj.Link) {
oprangeset(AFMINNMS, t)
oprangeset(AFDIVD, t)
case AFMSUBD:
oprangeset(AFMSUBS, t)
oprangeset(AFMADDS, t)
oprangeset(AFMADDD, t)
oprangeset(AFNMSUBS, t)
oprangeset(AFNMSUBD, t)
oprangeset(AFNMADDS, t)
oprangeset(AFNMADDD, t)
case AFCVTSD:
oprangeset(AFCVTDS, t)
oprangeset(AFABSD, t)
@ -2126,6 +2142,9 @@ func buildop(ctxt *obj.Link) {
case AVADDV:
oprangeset(AVUADDLV, t)
case AVFMLA:
oprangeset(AVFMLS, t)
case ASHA1H,
AVCNT,
AVMOV,
@ -2189,6 +2208,13 @@ func SYSARG4(op1 int, Cn int, Cm int, op2 int) int {
return SYSARG5(0, op1, Cn, Cm, op2)
}
/* checkindex checks if index >= 0 && index <= maxindex */
func (c *ctxt7) checkindex(p *obj.Prog, index, maxindex int) {
if index < 0 || index > maxindex {
c.ctxt.Diag("register element index out of range 0 to %d: %v", maxindex, p)
}
}
func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
o1 := uint32(0)
o2 := uint32(0)
@ -2420,7 +2446,7 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
o1 = 0
}
case 15: /* mul/mneg/umulh/umull r,[r,]r; madd/msub Rm,Ra,Rn,Rd */
case 15: /* mul/mneg/umulh/umull r,[r,]r; madd/msub/fmadd/fmsub/fnmadd/fnmsub Rm,Ra,Rn,Rd */
o1 = c.oprrr(p, p.As)
rf := int(p.From.Reg)
@ -3283,12 +3309,13 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
rel.Add = 0
rel.Type = objabi.R_ARM64_GOTPCREL
case 72: /* vaddp/vand/vcmeq/vorr/vadd/veor Vm.<T>, Vn.<T>, Vd.<T> */
case 72: /* vaddp/vand/vcmeq/vorr/vadd/veor/vfmla/vfmls Vm.<T>, Vn.<T>, Vd.<T> */
af := int((p.From.Reg >> 5) & 15)
af3 := int((p.Reg >> 5) & 15)
at := int((p.To.Reg >> 5) & 15)
if af != af3 || af != at {
c.ctxt.Diag("invalid arrangement: %v\n", p)
c.ctxt.Diag("operand mismatch: %v", p)
break
}
o1 = c.oprrr(p, p.As)
rf := int((p.From.Reg) & 31)
@ -3320,16 +3347,25 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
Q = 1
size = 1
default:
c.ctxt.Diag("invalid arrangement: %v\n", p)
c.ctxt.Diag("invalid arrangement: %v", p)
}
if (p.As == AVORR || p.As == AVAND || p.As == AVEOR) &&
(af != ARNG_16B && af != ARNG_8B) {
c.ctxt.Diag("invalid arrangement on op %v", p.As)
c.ctxt.Diag("invalid arrangement: %v", p)
} else if (p.As == AVFMLA || p.As == AVFMLS) &&
(af != ARNG_2D && af != ARNG_2S && af != ARNG_4S) {
c.ctxt.Diag("invalid arrangement: %v", p)
} else if p.As == AVORR {
size = 2
} else if p.As == AVAND || p.As == AVEOR {
size = 0
} else if (p.As == AVFMLA || p.As == AVFMLS) {
if af == ARNG_2D {
size = 1
} else {
size = 0
}
}
o1 |= (uint32(Q&1) << 30) | (uint32(size&3) << 22) | (uint32(rf&31) << 16) | (uint32(r&31) << 5) | uint32(rt&31)
@ -3339,22 +3375,27 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
rt := int(p.To.Reg)
imm5 := 0
o1 = 7<<25 | 0xf<<10
index := int(p.From.Index)
switch (p.From.Reg >> 5) & 15 {
case ARNG_B:
c.checkindex(p, index, 15)
imm5 |= 1
imm5 |= int(p.From.Index) << 1
imm5 |= index << 1
case ARNG_H:
c.checkindex(p, index, 7)
imm5 |= 2
imm5 |= int(p.From.Index) << 2
imm5 |= index << 2
case ARNG_S:
c.checkindex(p, index, 3)
imm5 |= 4
imm5 |= int(p.From.Index) << 3
imm5 |= index << 3
case ARNG_D:
c.checkindex(p, index, 1)
imm5 |= 8
imm5 |= int(p.From.Index) << 4
imm5 |= index << 4
o1 |= 1 << 30
default:
c.ctxt.Diag("invalid arrangement on op V.<T>[index], R: %v\n", p)
c.ctxt.Diag("invalid arrangement: %v", p)
}
o1 |= (uint32(imm5&0x1f) << 16) | (uint32(rf&31) << 5) | uint32(rt&31)
@ -3471,21 +3512,26 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
rt := int(p.To.Reg)
imm5 := 0
o1 = 1<<30 | 7<<25 | 7<<10
index :=int(p.From.Index)
switch (p.To.Reg >> 5) & 15 {
case ARNG_B:
c.checkindex(p, index, 15)
imm5 |= 1
imm5 |= int(p.From.Index) << 1
imm5 |= index << 1
case ARNG_H:
c.checkindex(p, index, 7)
imm5 |= 2
imm5 |= int(p.From.Index) << 2
imm5 |= index << 2
case ARNG_S:
c.checkindex(p, index, 3)
imm5 |= 4
imm5 |= int(p.From.Index) << 3
imm5 |= index << 3
case ARNG_D:
c.checkindex(p, index, 1)
imm5 |= 8
imm5 |= int(p.From.Index) << 4
imm5 |= index << 4
default:
c.ctxt.Diag("invalid arrangement on op R, V.<T>[index]: %v\n", p)
c.ctxt.Diag("invalid arrangement: %v", p)
}
o1 |= (uint32(imm5&0x1f) << 16) | (uint32(rf&31) << 5) | uint32(rt&31)
@ -3493,38 +3539,46 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
rf := int(p.From.Reg)
rt := int(p.To.Reg)
o1 = 7<<25 | 1<<10
var imm5, Q uint32
var imm5, Q int
index := int(p.From.Index)
switch (p.To.Reg >> 5) & 15 {
case ARNG_16B:
c.checkindex(p, index, 15)
Q = 1
imm5 = 1
imm5 |= uint32(p.From.Index) << 1
imm5 |= index << 1
case ARNG_2D:
c.checkindex(p, index, 1)
Q = 1
imm5 = 8
imm5 |= uint32(p.From.Index) << 4
imm5 |= index << 4
case ARNG_2S:
c.checkindex(p, index, 3)
Q = 0
imm5 = 4
imm5 |= uint32(p.From.Index) << 3
imm5 |= index << 3
case ARNG_4H:
c.checkindex(p, index, 7)
Q = 0
imm5 = 2
imm5 |= uint32(p.From.Index) << 2
imm5 |= index << 2
case ARNG_4S:
c.checkindex(p, index, 3)
Q = 1
imm5 = 4
imm5 |= uint32(p.From.Index) << 3
imm5 |= index << 3
case ARNG_8B:
c.checkindex(p, index, 15)
Q = 0
imm5 = 1
imm5 |= uint32(p.From.Index) << 1
imm5 |= index << 1
case ARNG_8H:
c.checkindex(p, index, 7)
Q = 1
imm5 = 2
imm5 |= uint32(p.From.Index) << 2
imm5 |= index << 2
default:
c.ctxt.Diag("invalid arrangement on VDUP Vn.<T>[index], Vd.<T>: %v\n", p)
c.ctxt.Diag("invalid arrangement: %v", p)
}
o1 |= (uint32(Q&1) << 30) | (uint32(imm5&0x1f) << 16)
o1 |= (uint32(rf&31) << 5) | uint32(rt&31)
@ -3533,24 +3587,29 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
rf := int(p.From.Reg)
rt := int(p.To.Reg)
imm5 := 0
index := int(p.From.Index)
switch p.As {
case AVMOV:
o1 = 1<<30 | 15<<25 | 1<<10
switch (p.From.Reg >> 5) & 15 {
case ARNG_B:
c.checkindex(p, index, 15)
imm5 |= 1
imm5 |= int(p.From.Index) << 1
imm5 |= index << 1
case ARNG_H:
c.checkindex(p, index, 7)
imm5 |= 2
imm5 |= int(p.From.Index) << 2
imm5 |= index << 2
case ARNG_S:
c.checkindex(p, index, 3)
imm5 |= 4
imm5 |= int(p.From.Index) << 3
imm5 |= index << 3
case ARNG_D:
c.checkindex(p, index, 1)
imm5 |= 8
imm5 |= int(p.From.Index) << 4
imm5 |= index << 4
default:
c.ctxt.Diag("invalid arrangement on op V.<T>[index], Vn: %v\n", p)
c.ctxt.Diag("invalid arrangement: %v", p)
}
default:
c.ctxt.Diag("unsupported op %v", p.As)
@ -3759,6 +3818,47 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
case 90:
o1 = 0xbea71700
case 92: /* vmov Vn.<T>[index], Vd.<T>[index] */
rf := int(p.From.Reg)
rt := int(p.To.Reg)
imm4 := 0
imm5 := 0
o1 = 3<<29 | 7<<25 | 1<<10
index1 := int(p.To.Index)
index2 := int(p.From.Index)
if ((p.To.Reg >> 5) & 15) != ((p.From.Reg >> 5) & 15) {
c.ctxt.Diag("operand mismatch: %v", p)
}
switch (p.To.Reg >> 5) & 15 {
case ARNG_B:
c.checkindex(p, index1, 15)
c.checkindex(p, index2, 15)
imm5 |= 1
imm5 |= index1 << 1
imm4 |= index2
case ARNG_H:
c.checkindex(p, index1, 7)
c.checkindex(p, index2, 7)
imm5 |= 2
imm5 |= index1 << 2
imm4 |= index2 << 1
case ARNG_S:
c.checkindex(p, index1, 3)
c.checkindex(p, index2, 3)
imm5 |= 4
imm5 |= index1 << 3
imm4 |= index2 << 2
case ARNG_D:
c.checkindex(p, index1, 1)
c.checkindex(p, index2, 1)
imm5 |= 8
imm5 |= index1 << 4
imm4 |= index2 << 3
default:
c.ctxt.Diag("invalid arrangement: %v", p)
}
o1 |= (uint32(imm5&0x1f) << 16) | (uint32(imm4&0xf) << 16) | (uint32(rf&31) << 5) | uint32(rt&31)
break
case 91: /* prfm imm(Rn), <prfop | $imm5> */
@ -4157,6 +4257,30 @@ func (c *ctxt7) oprrr(p *obj.Prog, a obj.As) uint32 {
case AFSUBD:
return FPOP2S(0, 0, 1, 3)
case AFMADDD:
return FPOP3S(0, 0, 1, 0, 0)
case AFMADDS:
return FPOP3S(0, 0, 0, 0, 0)
case AFMSUBD:
return FPOP3S(0, 0, 1, 0, 1)
case AFMSUBS:
return FPOP3S(0, 0, 0, 0, 1)
case AFNMADDD:
return FPOP3S(0, 0, 1, 1, 0)
case AFNMADDS:
return FPOP3S(0, 0, 0, 1, 0)
case AFNMSUBD:
return FPOP3S(0, 0, 1, 1, 1)
case AFNMSUBS:
return FPOP3S(0, 0, 0, 1, 1)
case AFMULS:
return FPOP2S(0, 0, 0, 0)
@ -4345,6 +4469,12 @@ func (c *ctxt7) oprrr(p *obj.Prog, a obj.As) uint32 {
case AVUADDLV:
return 1<<29 | 7<<25 | 3<<20 | 7<<11
case AVFMLA:
return 7<<25 | 0<<23 | 1<<21 | 3<<14 | 3<<10
case AVFMLS:
return 7<<25 | 1<<23 | 1<<21 | 3<<14 | 3<<10
}
c.ctxt.Diag("%v: bad rrr %d %v", p, a, a)

54
src/cmd/internal/obj/arm64/doc.go
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@ -22,6 +22,46 @@ Go Assembly for ARM64 Reference Manual
2. Alphabetical list of float-point instructions
// TODO
FMADDD: 64-bit floating-point fused Multiply-Add
FMADDD <Fm>, <Fa>, <Fn>, <Fd>
Multiplies the values of <Fm> and <Fn>,
adds the product to <Fa>, and writes the result to <Fd>.
FMADDS: 32-bit floating-point fused Multiply-Add
FMADDS <Fm>, <Fa>, <Fn>, <Fd>
Multiplies the values of <Fm> and <Fn>,
adds the product to <Fa>, and writes the result to <Fd>.
FMSUBD: 64-bit floating-point fused Multiply-Subtract
FMSUBD <Fm>, <Fa>, <Fn>, <Fd>
Multiplies the values of <Fm> and <Fn>, negates the product,
adds the product to <Fa>, and writes the result to <Fd>.
FMSUBS: 32-bit floating-point fused Multiply-Subtract
FMSUBS <Fm>, <Fa>, <Fn>, <Fd>
Multiplies the values of <Fm> and <Fn>, negates the product,
adds the product to <Fa>, and writes the result to <Fd>.
FNMADDD: 64-bit floating-point negated fused Multiply-Add
FNMADDD <Fm>, <Fa>, <Fn>, <Fd>
Multiplies the values of <Fm> and <Fn>, negates the product,
subtracts the value of <Fa>, and writes the result to <Fd>.
FNMADDS: 32-bit floating-point negated fused Multiply-Add
FNMADDS <Fm>, <Fa>, <Fn>, <Fd>
Multiplies the values of <Fm> and <Fn>, negates the product,
subtracts the value of <Fa>, and writes the result to <Fd>.
FNMSUBD: 64-bit floating-point negated fused Multiply-Subtract
FNMSUBD <Fm>, <Fa>, <Fn>, <Fd>
Multiplies the values of <Fm> and <Fn>,
subtracts the value of <Fa>, and writes the result to <Fd>.
FNMSUBS: 32-bit floating-point negated fused Multiply-Subtract
FNMSUBS <Fm>, <Fa>, <Fn>, <Fd>
Multiplies the values of <Fm> and <Fn>,
subtracts the value of <Fa>, and writes the result to <Fd>.
3. Alphabetical list of SIMD instructions
VADD: Add (scalar)
VADD <Vm>, <Vn>, <Vd>
@ -65,6 +105,16 @@ Go Assembly for ARM64 Reference Manual
<T> Is an arrangement specifier and can have the following values:
B8, B16
VFMLA: Floating-point fused Multiply-Add to accumulator (vector)
VFMLA <Vm>.<T>, <Vn>.<T>, <Vd>.<T>
<T> Is an arrangement specifier and can have the following values:
S2, S4, D2
VFMLS: Floating-point fused Multiply-Subtract from accumulator (vector)
VFMLS <Vm>.<T>, <Vn>.<T>, <Vd>.<T>
<T> Is an arrangement specifier and can have the following values:
S2, S4, D2
VLD1: Load multiple single-element structures
VLD1 (Rn), [<Vt>.<T>, <Vt2>.<T> ...] // no offset
VLD1.P imm(Rn), [<Vt>.<T>, <Vt2>.<T> ...] // immediate offset variant
@ -96,6 +146,10 @@ Go Assembly for ARM64 Reference Manual
<T> Is an element size specifier and can have the following values:
B, H, S, D
VMOV <Vn>.<T>[index], <Vd>.<T>[index] // Move vector element to another vector element.
<T> Is an element size specifier and can have the following values:
B, H, S, D
VMOVI: Move Immediate (vector).
VMOVI $imm8, <Vd>.<T>
<T> is an arrangement specifier and can have the following values: