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cmd/compile: post CL 20089 cleanups

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This CL addresses some issues noted during CL 20089.

Change-Id: I4e91a8077c07a571ccc9c004278672eb951c5104
Reviewed-on: https://go-review.googlesource.com/20181
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Dave Cheney <dave@cheney.net>
Run-TryBot: Dave Cheney <dave@cheney.net>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Dave Cheney 2016-03-04 13:15:40 +11:00
parent 14bf9c8c07
commit a162d11540
10 changed files with 32 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
src/cmd/compile/internal/amd64/peep.go
View File

@ -605,9 +605,7 @@ func subprop(r0 *gc.Flow) bool {
}
}
t := int(v1.Reg)
v1.Reg = v2.Reg
v2.Reg = int16(t)
v1.Reg, v2.Reg = v2.Reg, v1.Reg
if gc.Debug['P'] != 0 {
fmt.Printf("%v last\n", r.Prog)
}
@ -948,19 +946,16 @@ func copyau(a *obj.Addr, v *obj.Addr) bool {
*/
func copysub(a *obj.Addr, v *obj.Addr, s *obj.Addr, f int) int {
if copyas(a, v) {
reg := int(s.Reg)
if reg >= x86.REG_AX && reg <= x86.REG_R15 || reg >= x86.REG_X0 && reg <= x86.REG_X0+15 {
if s.Reg >= x86.REG_AX && s.Reg <= x86.REG_R15 || s.Reg >= x86.REG_X0 && s.Reg <= x86.REG_X0+15 {
if f != 0 {
a.Reg = int16(reg)
a.Reg = s.Reg
}
}
return 0
}
if regtyp(v) {
reg := int(v.Reg)
if a.Type == obj.TYPE_MEM && int(a.Reg) == reg {
if a.Type == obj.TYPE_MEM && a.Reg == v.Reg {
if (s.Reg == x86.REG_BP || s.Reg == x86.REG_R13) && a.Index != x86.REG_NONE {
return 1 /* can't use BP-base with index */
}
@ -968,18 +963,14 @@ func copysub(a *obj.Addr, v *obj.Addr, s *obj.Addr, f int) int {
a.Reg = s.Reg
}
}
// return 0;
if int(a.Index) == reg {
if a.Index == v.Reg {
if f != 0 {
a.Index = s.Reg
}
return 0
}
return 0
}
return 0
}

2
src/cmd/compile/internal/arm/ggen.go
View File

@ -121,7 +121,7 @@ func cgen_hmul(nl *gc.Node, nr *gc.Node, res *gc.Node) {
}
t := nl.Type
w := int(t.Width * 8)
w := t.Width * 8
var n1 gc.Node
gc.Regalloc(&n1, t, res)
gc.Cgen(nl, &n1)

29
src/cmd/compile/internal/arm/peep.go
View File

@ -308,9 +308,7 @@ func subprop(r0 *gc.Flow) bool {
}
}
t := int(v1.Reg)
v1.Reg = v2.Reg
v2.Reg = int16(t)
v1.Reg, v2.Reg = v2.Reg, v1.Reg
if gc.Debug['P'] != 0 {
fmt.Printf("%v last\n", r.Prog)
}
@ -571,8 +569,8 @@ func shiftprop(r *gc.Flow) bool {
return false
}
n := int(p.To.Reg)
a := obj.Addr{}
n := p.To.Reg
var a obj.Addr
if p.Reg != 0 && p.Reg != p.To.Reg {
a.Type = obj.TYPE_REG
a.Reg = p.Reg
@ -644,7 +642,7 @@ func shiftprop(r *gc.Flow) bool {
arm.ASBC,
arm.ARSB,
arm.ARSC:
if int(p1.Reg) == n || (p1.Reg == 0 && p1.To.Type == obj.TYPE_REG && int(p1.To.Reg) == n) {
if p1.Reg == n || (p1.Reg == 0 && p1.To.Type == obj.TYPE_REG && p1.To.Reg == n) {
if p1.From.Type != obj.TYPE_REG {
if gc.Debug['P'] != 0 {
fmt.Printf("\tcan't swap; FAILURE\n")
@ -653,7 +651,7 @@ func shiftprop(r *gc.Flow) bool {
}
p1.Reg = p1.From.Reg
p1.From.Reg = int16(n)
p1.From.Reg = n
switch p1.As {
case arm.ASUB:
p1.As = arm.ARSB
@ -678,14 +676,14 @@ func shiftprop(r *gc.Flow) bool {
arm.ATST,
arm.ACMP,
arm.ACMN:
if int(p1.Reg) == n {
if p1.Reg == n {
if gc.Debug['P'] != 0 {
fmt.Printf("\tcan't swap; FAILURE\n")
}
return false
}
if p1.Reg == 0 && int(p1.To.Reg) == n {
if p1.Reg == 0 && p1.To.Reg == n {
if gc.Debug['P'] != 0 {
fmt.Printf("\tshift result used twice; FAILURE\n")
}
@ -700,7 +698,7 @@ func shiftprop(r *gc.Flow) bool {
return false
}
if p1.From.Type != obj.TYPE_REG || int(p1.From.Reg) != n {
if p1.From.Type != obj.TYPE_REG || p1.From.Reg != n {
if gc.Debug['P'] != 0 {
fmt.Printf("\tBOTCH: where is it used?; FAILURE\n")
}
@ -711,7 +709,7 @@ func shiftprop(r *gc.Flow) bool {
/* check whether shift result is used subsequently */
p2 := p1
if int(p1.To.Reg) != n {
if p1.To.Reg != n {
var p1 *obj.Prog
for {
r1 = gc.Uniqs(r1)
@ -746,19 +744,18 @@ func shiftprop(r *gc.Flow) bool {
/* make the substitution */
p2.From.Reg = 0
o := int(p.Reg)
o := p.Reg
if o == 0 {
o = int(p.To.Reg)
o = p.To.Reg
}
o &= 15
switch p.From.Type {
case obj.TYPE_CONST:
o |= int((p.From.Offset & 0x1f) << 7)
o |= int16(p.From.Offset&0x1f) << 7
case obj.TYPE_REG:
o |= 1<<4 | (int(p.From.Reg)&15)<<8
o |= 1<<4 | (p.From.Reg&15)<<8
}
switch p.As {

8
src/cmd/compile/internal/arm64/ggen.go
View File

@ -263,7 +263,7 @@ func cgen_hmul(nl *gc.Node, nr *gc.Node, res *gc.Node) {
}
t := nl.Type
w := int(t.Width * 8)
w := t.Width * 8
var n1 gc.Node
gc.Cgenr(nl, &n1, res)
var n2 gc.Node
@ -275,7 +275,7 @@ func cgen_hmul(nl *gc.Node, nr *gc.Node, res *gc.Node) {
gins(optoas(gc.OMUL, t), &n2, &n1)
p := gins(arm64.AASR, nil, &n1)
p.From.Type = obj.TYPE_CONST
p.From.Offset = int64(w)
p.From.Offset = w
case gc.TUINT8,
gc.TUINT16,
@ -283,7 +283,7 @@ func cgen_hmul(nl *gc.Node, nr *gc.Node, res *gc.Node) {
gins(optoas(gc.OMUL, t), &n2, &n1)
p := gins(arm64.ALSR, nil, &n1)
p.From.Type = obj.TYPE_CONST
p.From.Offset = int64(w)
p.From.Offset = w
case gc.TINT64,
gc.TUINT64:
@ -315,7 +315,7 @@ func cgen_shift(op gc.Op, bounded bool, nl *gc.Node, nr *gc.Node, res *gc.Node)
gc.Regalloc(&n1, nl.Type, res)
gc.Cgen(nl, &n1)
sc := uint64(nr.Int())
if sc >= uint64(nl.Type.Width*8) {
if sc >= uint64(nl.Type.Width)*8 {
// large shift gets 2 shifts by width-1
var n3 gc.Node
gc.Nodconst(&n3, gc.Types[gc.TUINT32], nl.Type.Width*8-1)

4
src/cmd/compile/internal/arm64/peep.go
View File

@ -253,9 +253,7 @@ func subprop(r0 *gc.Flow) bool {
}
}
t := int(v1.Reg)
v1.Reg = v2.Reg
v2.Reg = int16(t)
v1.Reg, v2.Reg = v2.Reg, v1.Reg
if gc.Debug['P'] != 0 {
fmt.Printf("%v last\n", r.Prog)
}

6
src/cmd/compile/internal/gc/pgen.go
View File

@ -355,7 +355,6 @@ func compile(fn *Node) {
Curfn = fn
dowidth(Curfn.Type)
var oldstksize int64
var nod1 Node
var ptxt *obj.Prog
var pl *obj.Plist
@ -535,13 +534,8 @@ func compile(fn *Node) {
Thearch.Expandchecks(ptxt)
oldstksize = Stksize
allocauto(ptxt)
if false {
fmt.Printf("allocauto: %d to %d\n", oldstksize, Stksize)
}
setlineno(Curfn)
if Stksize+Maxarg > 1<<31 {
Yyerror("stack frame too large (>2GB)")

6
src/cmd/compile/internal/mips64/ggen.go
View File

@ -204,7 +204,7 @@ func cgen_hmul(nl *gc.Node, nr *gc.Node, res *gc.Node) {
}
t := nl.Type
w := int(t.Width * 8)
w := t.Width * 8
var n1 gc.Node
gc.Cgenr(nl, &n1, res)
var n2 gc.Node
@ -219,7 +219,7 @@ func cgen_hmul(nl *gc.Node, nr *gc.Node, res *gc.Node) {
gins(mips.AMOVV, &lo, &n1)
p := gins(mips.ASRAV, nil, &n1)
p.From.Type = obj.TYPE_CONST
p.From.Offset = int64(w)
p.From.Offset = w
case gc.TUINT8,
gc.TUINT16,
@ -230,7 +230,7 @@ func cgen_hmul(nl *gc.Node, nr *gc.Node, res *gc.Node) {
gins(mips.AMOVV, &lo, &n1)
p := gins(mips.ASRLV, nil, &n1)
p.From.Type = obj.TYPE_CONST
p.From.Offset = int64(w)
p.From.Offset = w
case gc.TINT64,
gc.TUINT64:

4
src/cmd/compile/internal/mips64/peep.go
View File

@ -242,9 +242,7 @@ func subprop(r0 *gc.Flow) bool {
}
}
t := int(v1.Reg)
v1.Reg = v2.Reg
v2.Reg = int16(t)
v1.Reg, v2.Reg = v2.Reg, v1.Reg
if gc.Debug['P'] != 0 {
fmt.Printf("%v last\n", r.Prog)
}

6
src/cmd/compile/internal/ppc64/ggen.go
View File

@ -252,7 +252,7 @@ func cgen_hmul(nl *gc.Node, nr *gc.Node, res *gc.Node) {
}
t := nl.Type
w := int(t.Width * 8)
w := t.Width * 8
var n1 gc.Node
gc.Cgenr(nl, &n1, res)
var n2 gc.Node
@ -264,7 +264,7 @@ func cgen_hmul(nl *gc.Node, nr *gc.Node, res *gc.Node) {
gins(optoas(gc.OMUL, t), &n2, &n1)
p := gins(ppc64.ASRAD, nil, &n1)
p.From.Type = obj.TYPE_CONST
p.From.Offset = int64(w)
p.From.Offset = w
case gc.TUINT8,
gc.TUINT16,
@ -272,7 +272,7 @@ func cgen_hmul(nl *gc.Node, nr *gc.Node, res *gc.Node) {
gins(optoas(gc.OMUL, t), &n2, &n1)
p := gins(ppc64.ASRD, nil, &n1)
p.From.Type = obj.TYPE_CONST
p.From.Offset = int64(w)
p.From.Offset = w
case gc.TINT64,
gc.TUINT64:

4
src/cmd/compile/internal/ppc64/peep.go
View File

@ -441,9 +441,7 @@ func subprop(r0 *gc.Flow) bool {
}
}
t := int(v1.Reg)
v1.Reg = v2.Reg
v2.Reg = int16(t)
v1.Reg, v2.Reg = v2.Reg, v1.Reg
if gc.Debug['P'] != 0 {
fmt.Printf("%v last\n", r.Prog)
}