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cmd/internal/obj: support more arm64 FP instructions

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ARM64 also supports float point LDP(load pair) & STP (store pair).
The CL adds implementation and corresponding test cases for
FLDPD/FLDPS/FSTPD/FSTPS.

Change-Id: I45f112012a4e097bfaf023d029b36e6cbc7a5859
Reviewed-on: https://go-review.googlesource.com/125438
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Ben Shi 2018-07-23 03:16:53 +00:00 committed by Cherry Zhang
parent 6e76aeba0b
commit 84374d4de5
5 changed files with 113 additions and 4 deletions
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72
src/cmd/asm/internal/asm/testdata/arm64.s vendored
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@ -741,6 +741,78 @@ again:
UBFIZ $0, R1, $1, R2 // 220040d3
UBFIZW $0, R1, $1, R2 // 22000053
// FSTPD/FSTPS/FLDPD/FLDPS
FLDPD (R0), (F1, F2) // 0108406d
FLDPD 8(R0), (F1, F2) // 0188406d
FLDPD -8(R0), (F1, F2) // 01887f6d
FLDPD 11(R0), (F1, F2) // 1b2c0091610b406d
FLDPD 1024(R0), (F1, F2) // 1b001091610b406d
FLDPD.W 8(R0), (F1, F2) // 0188c06d
FLDPD.P 8(R0), (F1, F2) // 0188c06c
FLDPD (RSP), (F1, F2) // e10b406d
FLDPD 8(RSP), (F1, F2) // e18b406d
FLDPD -8(RSP), (F1, F2) // e18b7f6d
FLDPD 11(RSP), (F1, F2) // fb2f0091610b406d
FLDPD 1024(RSP), (F1, F2) // fb031091610b406d
FLDPD.W 8(RSP), (F1, F2) // e18bc06d
FLDPD.P 8(RSP), (F1, F2) // e18bc06c
FLDPD -31(R0), (F1, F2) // 1b7c00d1610b406d
FLDPD -4(R0), (F1, F2) // 1b1000d1610b406d
FLDPD -8(R0), (F1, F2) // 01887f6d
FLDPD x(SB), (F1, F2)
FLDPD x+8(SB), (F1, F2)
FLDPS -5(R0), (F1, F2) // 1b1400d1610b402d
FLDPS (R0), (F1, F2) // 0108402d
FLDPS 4(R0), (F1, F2) // 0188402d
FLDPS -4(R0), (F1, F2) // 01887f2d
FLDPS.W 4(R0), (F1, F2) // 0188c02d
FLDPS.P 4(R0), (F1, F2) // 0188c02c
FLDPS 11(R0), (F1, F2) // 1b2c0091610b402d
FLDPS 1024(R0), (F1, F2) // 1b001091610b402d
FLDPS (RSP), (F1, F2) // e10b402d
FLDPS 4(RSP), (F1, F2) // e18b402d
FLDPS -4(RSP), (F1, F2) // e18b7f2d
FLDPS.W 4(RSP), (F1, F2) // e18bc02d
FLDPS.P 4(RSP), (F1, F2) // e18bc02c
FLDPS 11(RSP), (F1, F2) // fb2f0091610b402d
FLDPS 1024(RSP), (F1, F2) // fb031091610b402d
FLDPS x(SB), (F1, F2)
FLDPS x+8(SB), (F1, F2)
FSTPD (F3, F4), (R5) // a310006d
FSTPD (F3, F4), 8(R5) // a390006d
FSTPD.W (F3, F4), 8(R5) // a390806d
FSTPD.P (F3, F4), 8(R5) // a390806c
FSTPD (F3, F4), -8(R5) // a3903f6d
FSTPD (F3, F4), -4(R5) // bb1000d16313006d
FSTPD (F3, F4), 11(R0) // 1b2c00916313006d
FSTPD (F3, F4), 1024(R0) // 1b0010916313006d
FSTPD (F3, F4), (RSP) // e313006d
FSTPD (F3, F4), 8(RSP) // e393006d
FSTPD.W (F3, F4), 8(RSP) // e393806d
FSTPD.P (F3, F4), 8(RSP) // e393806c
FSTPD (F3, F4), -8(RSP) // e3933f6d
FSTPD (F3, F4), 11(RSP) // fb2f00916313006d
FSTPD (F3, F4), 1024(RSP) // fb0310916313006d
FSTPD (F3, F4), x(SB)
FSTPD (F3, F4), x+8(SB)
FSTPS (F3, F4), (R5) // a310002d
FSTPS (F3, F4), 4(R5) // a390002d
FSTPS.W (F3, F4), 4(R5) // a390802d
FSTPS.P (F3, F4), 4(R5) // a390802c
FSTPS (F3, F4), -4(R5) // a3903f2d
FSTPS (F3, F4), -5(R5) // bb1400d16313002d
FSTPS (F3, F4), 11(R0) // 1b2c00916313002d
FSTPS (F3, F4), 1024(R0) // 1b0010916313002d
FSTPS (F3, F4), (RSP) // e313002d
FSTPS (F3, F4), 4(RSP) // e393002d
FSTPS.W (F3, F4), 4(RSP) // e393802d
FSTPS.P (F3, F4), 4(RSP) // e393802c
FSTPS (F3, F4), -4(RSP) // e3933f2d
FSTPS (F3, F4), 11(RSP) // fb2f00916313002d
FSTPS (F3, F4), 1024(RSP) // fb0310916313002d
FSTPS (F3, F4), x(SB)
FSTPS (F3, F4), x+8(SB)
// END
//
// LTYPEE comma

3
src/cmd/asm/internal/asm/testdata/arm64error.s vendored
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@ -90,5 +90,8 @@ TEXT errors(SB),$0
AND $0x22220000, R2, RSP // ERROR "illegal combination"
ANDS $0x22220000, R2, RSP // ERROR "illegal combination"
LDP (R0), (F0, F1) // ERROR "invalid register pair"
LDP (R0), (R3, ZR) // ERROR "invalid register pair"
STP (F2, F3), (R0) // ERROR "invalid register pair"
FLDPD (R0), (R1, R2) // ERROR "invalid register pair"
FSTPD (R1, R2), (R0) // ERROR "invalid register pair"
RET

4
src/cmd/internal/obj/arm64/a.out.go
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@ -821,6 +821,8 @@ const (
AFCVTZUSW
AFDIVD
AFDIVS
AFLDPD
AFLDPS
AFMOVD
AFMOVS
AFMULD
@ -829,6 +831,8 @@ const (
AFNEGS
AFSQRTD
AFSQRTS
AFSTPD
AFSTPS
AFSUBD
AFSUBS
ASCVTFD

4
src/cmd/internal/obj/arm64/anames.go
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@ -322,6 +322,8 @@ var Anames = []string{
"FCVTZUSW",
"FDIVD",
"FDIVS",
"FLDPD",
"FLDPS",
"FMOVD",
"FMOVS",
"FMULD",
@ -330,6 +332,8 @@ var Anames = []string{
"FNEGS",
"FSQRTD",
"FSQRTS",
"FSTPD",
"FSTPS",
"FSUBD",
"FSUBS",
"SCVTFD",

34
src/cmd/internal/obj/arm64/asm7.go
View File

@ -2193,14 +2193,21 @@ func buildop(ctxt *obj.Link) {
AWORD,
ADWORD,
obj.ARET,
obj.ATEXT,
ASTP,
ASTPW,
ALDP:
obj.ATEXT:
break
case ALDP:
oprangeset(AFLDPD, t)
case ASTP:
oprangeset(AFSTPD, t)
case ASTPW:
oprangeset(AFSTPS, t)
case ALDPW:
oprangeset(ALDPSW, t)
oprangeset(AFLDPS, t)
case AERET:
oprangeset(AWFE, t)
@ -6164,13 +6171,26 @@ func (c *ctxt7) opextr(p *obj.Prog, a obj.As, v int32, rn int, rm int, rt int) u
/* genrate instruction encoding for LDP/LDPW/LDPSW/STP/STPW */
func (c *ctxt7) opldpstp(p *obj.Prog, o *Optab, vo int32, rbase, rl, rh, ldp uint32) uint32 {
var ret uint32
// check offset
switch p.As {
case AFLDPD, AFSTPD:
if vo < -512 || vo > 504 || vo%8 != 0 {
c.ctxt.Diag("invalid offset %v\n", p)
}
vo /= 8
ret = 1<<30 | 1<<26
case ALDP, ASTP:
if vo < -512 || vo > 504 || vo%8 != 0 {
c.ctxt.Diag("invalid offset %v\n", p)
}
vo /= 8
ret = 2 << 30
case AFLDPS, AFSTPS:
if vo < -256 || vo > 252 || vo%4 != 0 {
c.ctxt.Diag("invalid offset %v\n", p)
}
vo /= 4
ret = 1 << 26
case ALDPW, ASTPW:
if vo < -256 || vo > 252 || vo%4 != 0 {
c.ctxt.Diag("invalid offset %v\n", p)
@ -6186,7 +6206,12 @@ func (c *ctxt7) opldpstp(p *obj.Prog, o *Optab, vo int32, rbase, rl, rh, ldp uin
default:
c.ctxt.Diag("invalid instruction %v\n", p)
}
// check register pair
switch p.As {
case AFLDPD, AFLDPS, AFSTPD, AFSTPS:
if rl < REG_F0 || REG_F31 < rl || rh < REG_F0 || REG_F31 < rh {
c.ctxt.Diag("invalid register pair %v\n", p)
}
case ALDP, ALDPW, ALDPSW:
if rl < REG_R0 || REG_R30 < rl || rh < REG_R0 || REG_R30 < rh {
c.ctxt.Diag("invalid register pair %v\n", p)
@ -6196,6 +6221,7 @@ func (c *ctxt7) opldpstp(p *obj.Prog, o *Optab, vo int32, rbase, rl, rh, ldp uin
c.ctxt.Diag("invalid register pair %v\n", p)
}
}
// other conditional flag bits
switch o.scond {
case C_XPOST:
ret |= 1 << 23