cybercyst/go
1
0
Fork 0
mirror of https://github.com/golang/go.git synced 2025-05-30 11:51:34 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

cmd/internal/obj: convert fields of LSym from uint8 to bool

Browse Source 
No performance regression measurable:

name      old time/op    new time/op    delta
Template     432ms ± 3%     422ms ± 2%  -2.34%   (p=0.010 n=10+9)
GoTypes      1.46s ± 1%     1.46s ± 1%    ~     (p=0.796 n=10+10)
Compiler     7.15s ± 1%     7.14s ± 1%    ~      (p=0.447 n=10+9)

Change-Id: I21b93cb989017b6fec2215de2423d87f25cf538c
Reviewed-on: https://go-review.googlesource.com/21220
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Run-TryBot: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Marvin Stenger 2016-03-28 11:34:37 +02:00 committed by David Crawshaw
parent 8eec2bbfbc
commit 2326c24cc7
8 changed files with 54 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/cmd/compile/internal/gc/pgen.go
View File

@ -135,7 +135,7 @@ func gcsymdup(s *Sym) {
Fatalf("cannot rosymdup %s with relocations", ls.Name)
}
ls.Name = fmt.Sprintf("gclocals·%x", md5.Sum(ls.P))
ls.Dupok = 1
ls.Dupok = true
}
func emitptrargsmap() {
@ -442,7 +442,7 @@ func compile(fn *Node) {
ptxt.From3.Offset |= obj.REFLECTMETHOD
}
if fn.Func.Pragma&Systemstack != 0 {
ptxt.From.Sym.Cfunc = 1
ptxt.From.Sym.Cfunc = true
}
// Clumsy but important.

6
src/cmd/internal/obj/arm/obj5.go
View File

@ -367,7 +367,7 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
}
if cursym.Text.Mark&LEAF != 0 {
cursym.Leaf = 1
cursym.Leaf = true
if autosize == 0 {
break
}
@ -709,7 +709,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32) *obj.Prog {
p.From.Type = obj.TYPE_MEM
p.From.Reg = REGG
p.From.Offset = 2 * int64(ctxt.Arch.Ptrsize) // G.stackguard0
if ctxt.Cursym.Cfunc != 0 {
if ctxt.Cursym.Cfunc {
p.From.Offset = 3 * int64(ctxt.Arch.Ptrsize) // G.stackguard1
}
p.To.Type = obj.TYPE_REG
@ -822,7 +822,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32) *obj.Prog {
call.To.Type = obj.TYPE_BRANCH
morestack := "runtime.morestack"
switch {
case ctxt.Cursym.Cfunc != 0:
case ctxt.Cursym.Cfunc:
morestack = "runtime.morestackc"
case ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0:
morestack = "runtime.morestack_noctxt"

6
src/cmd/internal/obj/arm64/obj7.go
View File

@ -57,7 +57,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32) *obj.Prog {
p.From.Type = obj.TYPE_MEM
p.From.Reg = REGG
p.From.Offset = 2 * int64(ctxt.Arch.Ptrsize) // G.stackguard0
if ctxt.Cursym.Cfunc != 0 {
if ctxt.Cursym.Cfunc {
p.From.Offset = 3 * int64(ctxt.Arch.Ptrsize) // G.stackguard1
}
p.To.Type = obj.TYPE_REG
@ -193,7 +193,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32) *obj.Prog {
call.To.Type = obj.TYPE_BRANCH
morestack := "runtime.morestack"
switch {
case ctxt.Cursym.Cfunc != 0:
case ctxt.Cursym.Cfunc:
morestack = "runtime.morestackc"
case ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0:
morestack = "runtime.morestack_noctxt"
@ -718,7 +718,7 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
aoffset = 0xF0
}
if cursym.Text.Mark&LEAF != 0 {
cursym.Leaf = 1
cursym.Leaf = true
if ctxt.Autosize == 0 {
break
}

12
src/cmd/internal/obj/link.go
View File

@ -309,12 +309,12 @@ type LSym struct {
Name string
Type int16
Version int16
Dupok uint8
Cfunc uint8
Nosplit uint8
Leaf uint8
Seenglobl uint8
Onlist uint8
Dupok bool
Cfunc bool
Nosplit bool
Leaf bool
Seenglobl bool
Onlist bool
// ReflectMethod means the function may call reflect.Type.Method or
// reflect.Type.MethodByName. Matching is imprecise (as reflect.Type

6
src/cmd/internal/obj/mips/obj0.go
View File

@ -302,7 +302,7 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
}
if cursym.Text.Mark&LEAF != 0 {
cursym.Leaf = 1
cursym.Leaf = true
break
}
@ -560,7 +560,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32) *obj.Prog {
p.From.Type = obj.TYPE_MEM
p.From.Reg = REGG
p.From.Offset = 2 * int64(ctxt.Arch.Ptrsize) // G.stackguard0
if ctxt.Cursym.Cfunc != 0 {
if ctxt.Cursym.Cfunc {
p.From.Offset = 3 * int64(ctxt.Arch.Ptrsize) // G.stackguard1
}
p.To.Type = obj.TYPE_REG
@ -690,7 +690,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32) *obj.Prog {
p.As = AJAL
p.To.Type = obj.TYPE_BRANCH
if ctxt.Cursym.Cfunc != 0 {
if ctxt.Cursym.Cfunc {
p.To.Sym = obj.Linklookup(ctxt, "runtime.morestackc", 0)
} else if ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0 {
p.To.Sym = obj.Linklookup(ctxt, "runtime.morestack_noctxt", 0)

48
src/cmd/internal/obj/objfile.go
View File

@ -170,15 +170,14 @@ func flushplist(ctxt *Link, freeProgs bool) {
case AGLOBL:
s := p.From.Sym
tmp6 := s.Seenglobl
s.Seenglobl++
if tmp6 != 0 {
if s.Seenglobl {
fmt.Printf("duplicate %v\n", p)
}
if s.Onlist != 0 {
s.Seenglobl = true
if s.Onlist {
log.Fatalf("symbol %s listed multiple times", s.Name)
}
s.Onlist = 1
s.Onlist = true
ctxt.Data = append(ctxt.Data, s)
s.Size = p.To.Offset
if s.Type == 0 || s.Type == SXREF {
@ -186,7 +185,7 @@ func flushplist(ctxt *Link, freeProgs bool) {
}
flag := int(p.From3.Offset)
if flag&DUPOK != 0 {
s.Dupok = 1
s.Dupok = true
}
if flag&RODATA != 0 {
s.Type = SRODATA
@ -209,17 +208,17 @@ func flushplist(ctxt *Link, freeProgs bool) {
if s.Text != nil {
log.Fatalf("duplicate TEXT for %s", s.Name)
}
if s.Onlist != 0 {
if s.Onlist {
log.Fatalf("symbol %s listed multiple times", s.Name)
}
s.Onlist = 1
s.Onlist = true
text = append(text, s)
flag := int(p.From3Offset())
if flag&DUPOK != 0 {
s.Dupok = 1
s.Dupok = true
}
if flag&NOSPLIT != 0 {
s.Nosplit = 1
s.Nosplit = true
}
if flag&REFLECTMETHOD != 0 {
s.ReflectMethod = true
@ -437,19 +436,19 @@ func writesym(ctxt *Link, b *Biobuf, s *LSym) {
if s.Type != 0 {
fmt.Fprintf(ctxt.Bso, "t=%d ", s.Type)
}
if s.Dupok != 0 {
if s.Dupok {
fmt.Fprintf(ctxt.Bso, "dupok ")
}
if s.Cfunc != 0 {
if s.Cfunc {
fmt.Fprintf(ctxt.Bso, "cfunc ")
}
if s.Nosplit != 0 {
if s.Nosplit {
fmt.Fprintf(ctxt.Bso, "nosplit ")
}
fmt.Fprintf(ctxt.Bso, "size=%d", s.Size)
if s.Type == STEXT {
fmt.Fprintf(ctxt.Bso, " args=%#x locals=%#x", uint64(s.Args), uint64(s.Locals))
if s.Leaf != 0 {
if s.Leaf {
fmt.Fprintf(ctxt.Bso, " leaf")
}
}
@ -499,9 +498,12 @@ func writesym(ctxt *Link, b *Biobuf, s *LSym) {
Bputc(b, 0xfe)
wrint(b, int64(s.Type))
wrsym(b, s)
flags := int64(s.Dupok)
flags := int64(0)
if s.Dupok {
flags |= 1
}
if s.Local {
flags |= 2
flags |= 1 << 1
}
wrint(b, flags)
wrint(b, s.Size)
@ -522,8 +524,18 @@ func writesym(ctxt *Link, b *Biobuf, s *LSym) {
if s.Type == STEXT {
wrint(b, int64(s.Args))
wrint(b, int64(s.Locals))
wrint(b, int64(s.Nosplit))
flags := int64(s.Leaf) | int64(s.Cfunc)<<1
if s.Nosplit {
wrint(b, 1)
} else {
wrint(b, 0)
}
flags := int64(0)
if s.Leaf {
flags |= 1
}
if s.Cfunc {
flags |= 1 << 1
}
if s.ReflectMethod {
flags |= 1 << 2
}

6
src/cmd/internal/obj/ppc64/obj9.go
View File

@ -534,7 +534,7 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
}
if cursym.Text.Mark&LEAF != 0 {
cursym.Leaf = 1
cursym.Leaf = true
break
}
@ -828,7 +828,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32) *obj.Prog {
p.From.Type = obj.TYPE_MEM
p.From.Reg = REGG
p.From.Offset = 2 * int64(ctxt.Arch.Ptrsize) // G.stackguard0
if ctxt.Cursym.Cfunc != 0 {
if ctxt.Cursym.Cfunc {
p.From.Offset = 3 * int64(ctxt.Arch.Ptrsize) // G.stackguard1
}
p.To.Type = obj.TYPE_REG
@ -943,7 +943,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32) *obj.Prog {
}
var morestacksym *obj.LSym
if ctxt.Cursym.Cfunc != 0 {
if ctxt.Cursym.Cfunc {
morestacksym = obj.Linklookup(ctxt, "runtime.morestackc", 0)
} else if ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0 {
morestacksym = obj.Linklookup(ctxt, "runtime.morestack_noctxt", 0)

8
src/cmd/internal/obj/x86/obj6.go
View File

@ -985,7 +985,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32, textarg int32) *ob
p.From.Reg = REG_SP
indir_cx(ctxt, p, &p.To)
p.To.Offset = 2 * int64(ctxt.Arch.Ptrsize) // G.stackguard0
if ctxt.Cursym.Cfunc != 0 {
if ctxt.Cursym.Cfunc {
p.To.Offset = 3 * int64(ctxt.Arch.Ptrsize) // G.stackguard1
}
} else if framesize <= obj.StackBig {
@ -1007,7 +1007,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32, textarg int32) *ob
p.From.Reg = REG_AX
indir_cx(ctxt, p, &p.To)
p.To.Offset = 2 * int64(ctxt.Arch.Ptrsize) // G.stackguard0
if ctxt.Cursym.Cfunc != 0 {
if ctxt.Cursym.Cfunc {
p.To.Offset = 3 * int64(ctxt.Arch.Ptrsize) // G.stackguard1
}
} else {
@ -1031,7 +1031,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32, textarg int32) *ob
p.As = mov
indir_cx(ctxt, p, &p.From)
p.From.Offset = 2 * int64(ctxt.Arch.Ptrsize) // G.stackguard0
if ctxt.Cursym.Cfunc != 0 {
if ctxt.Cursym.Cfunc {
p.From.Offset = 3 * int64(ctxt.Arch.Ptrsize) // G.stackguard1
}
p.To.Type = obj.TYPE_REG
@ -1095,7 +1095,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32, textarg int32) *ob
call.To.Type = obj.TYPE_BRANCH
morestack := "runtime.morestack"
switch {
case ctxt.Cursym.Cfunc != 0:
case ctxt.Cursym.Cfunc:
morestack = "runtime.morestackc"
case ctxt.Cursym.Text.From3Offset()&obj.NEEDCTXT == 0:
morestack = "runtime.morestack_noctxt"