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cmd/internal/obj/loong64: add support for instructions FSCALEB{F/D} and FLOGB{F/D}

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Go asm syntax:
	FSCALEB{F/D}	FK, FJ, FD
	FLOGB{F/D}	FJ, FD

Equivalent platform assembler syntax:
	fscaleb.{s/d}	fd, fj, fk
	flogb.{s/d}	fd, fj

Ref: https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html

Change-Id: I6cd75c7605adbb572dae86d6470ec7cf20ce0f6c
Reviewed-on: https://go-review.googlesource.com/c/go/+/612975
Auto-Submit: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Tim King <taking@google.com>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Xiaolin Zhao 2024-09-13 15:32:03 +08:00 committed by Gopher Robot
parent 76650b60eb
commit b895dd5630
4 changed files with 25 additions and 0 deletions
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5
src/cmd/asm/internal/asm/testdata/loong64enc1.s vendored
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@ -351,3 +351,8 @@ lable2:
BSTRPICKV $0, R4, $0, R5 // 8500c000
BSTRPICKV $63, R4, $0, R5 // 8500ff00
BSTRPICKV $15, R4, $6, R5 // 8518cf00
FSCALEBF F4, F5, F6 // a6901001
FSCALEBD F4, F5, F6 // a6101101
FLOGBF F4, F5 // 85241401
FLOGBD F4, F5 // 85281401

4
src/cmd/internal/obj/loong64/a.out.go
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@ -462,6 +462,10 @@ const (
// 3.2.1.7
AFCOPYSGF
AFCOPYSGD
AFSCALEBF
AFSCALEBD
AFLOGBF
AFLOGBD
// 3.2.1.8
AFCLASSF

4
src/cmd/internal/obj/loong64/anames.go
View File

@ -191,6 +191,10 @@ var Anames = []string{
"FMAXD",
"FCOPYSGF",
"FCOPYSGD",
"FSCALEBF",
"FSCALEBD",
"FLOGBF",
"FLOGBD",
"FCLASSF",
"FCLASSD",
"FFINTFW",

12
src/cmd/internal/obj/loong64/asm.go
View File

@ -1042,6 +1042,8 @@ func buildop(ctxt *obj.Link) {
opset(ASQRTD, r0)
opset(AFCLASSF, r0)
opset(AFCLASSD, r0)
opset(AFLOGBF, r0)
opset(AFLOGBD, r0)
case AMOVVF:
opset(AMOVVD, r0)
@ -1096,6 +1098,8 @@ func buildop(ctxt *obj.Link) {
opset(AFMAXD, r0)
opset(AFCOPYSGF, r0)
opset(AFCOPYSGD, r0)
opset(AFSCALEBF, r0)
opset(AFSCALEBD, r0)
case AAND:
opset(AOR, r0)
@ -1969,6 +1973,10 @@ func (c *ctxt0) oprrr(a obj.As) uint32 {
return 0x211 << 15 // fmax.s
case AFMAXD:
return 0x212 << 15 // fmax.d
case AFSCALEBF:
return 0x221 << 15 // fscaleb.s
case AFSCALEBD:
return 0x222 << 15 // fscaleb.d
case AFCOPYSGF:
return 0x225 << 15 // fcopysign.s
case AFCOPYSGD:
@ -2071,6 +2079,10 @@ func (c *ctxt0) oprr(a obj.As) uint32 {
return 0x4511 << 10
case ASQRTD:
return 0x4512 << 10
case AFLOGBF:
return 0x4509 << 10 // flogb.s
case AFLOGBD:
return 0x450a << 10 // flogb.d
case AFCLASSF:
return 0x450d << 10 // fclass.s
case AFCLASSD: