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cmd/compile: funnel SSA Prog creation through SSAGenState

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Step one in eliminating Prog-related globals.

Passes toolstash-check -all.

Updates #15756

Change-Id: I3b777fb5a7716f2d9da3067fbd94c28ca894a465
Reviewed-on: https://go-review.googlesource.com/38450
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Josh Bleecher Snyder 2017-03-20 08:01:28 -07:00
parent 3b39f523e1
commit 0a94daa378
10 changed files with 721 additions and 717 deletions
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174
src/cmd/compile/internal/x86/ssa.go
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@ -104,8 +104,8 @@ func moveByType(t ssa.Type) obj.As {
// dest := dest(To) op src(From)
// and also returns the created obj.Prog so it
// may be further adjusted (offset, scale, etc).
func opregreg(op obj.As, dest, src int16) *obj.Prog {
p := gc.Prog(op)
func opregreg(s *gc.SSAGenState, op obj.As, dest, src int16) *obj.Prog {
p := s.Prog(op)
p.From.Type = obj.TYPE_REG
p.To.Type = obj.TYPE_REG
p.To.Reg = dest
@ -121,19 +121,19 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
r2 := v.Args[1].Reg()
switch {
case r == r1:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = r2
p.To.Type = obj.TYPE_REG
p.To.Reg = r
case r == r2:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = r1
p.To.Type = obj.TYPE_REG
p.To.Reg = r
default:
p := gc.Prog(x86.ALEAL)
p := s.Prog(x86.ALEAL)
p.From.Type = obj.TYPE_MEM
p.From.Reg = r1
p.From.Scale = 1
@ -160,7 +160,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if r != v.Args[0].Reg() {
v.Fatalf("input[0] and output not in same register %s", v.LongString())
}
opregreg(v.Op.Asm(), r, v.Args[1].Reg())
opregreg(s, v.Op.Asm(), r, v.Args[1].Reg())
case ssa.Op386ADDLcarry, ssa.Op386SUBLcarry:
// output 0 is carry/borrow, output 1 is the low 32 bits.
@ -168,7 +168,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if r != v.Args[0].Reg() {
v.Fatalf("input[0] and output[0] not in same register %s", v.LongString())
}
opregreg(v.Op.Asm(), r, v.Args[1].Reg())
opregreg(s, v.Op.Asm(), r, v.Args[1].Reg())
case ssa.Op386ADDLconstcarry, ssa.Op386SUBLconstcarry:
// output 0 is carry/borrow, output 1 is the low 32 bits.
@ -176,7 +176,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if r != v.Args[0].Reg() {
v.Fatalf("input[0] and output[0] not in same register %s", v.LongString())
}
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_CONST
p.From.Offset = v.AuxInt
p.To.Type = obj.TYPE_REG
@ -200,14 +200,14 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
var c *obj.Prog
switch v.Op {
case ssa.Op386DIVL, ssa.Op386MODL:
c = gc.Prog(x86.ACMPL)
j = gc.Prog(x86.AJEQ)
gc.Prog(x86.ACDQ) //TODO: fix
c = s.Prog(x86.ACMPL)
j = s.Prog(x86.AJEQ)
s.Prog(x86.ACDQ) //TODO: fix
case ssa.Op386DIVW, ssa.Op386MODW:
c = gc.Prog(x86.ACMPW)
j = gc.Prog(x86.AJEQ)
gc.Prog(x86.ACWD)
c = s.Prog(x86.ACMPW)
j = s.Prog(x86.AJEQ)
s.Prog(x86.ACWD)
}
c.From.Type = obj.TYPE_REG
c.From.Reg = x
@ -221,31 +221,31 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
// signed ints were sign extended above
if v.Op == ssa.Op386DIVLU || v.Op == ssa.Op386MODLU ||
v.Op == ssa.Op386DIVWU || v.Op == ssa.Op386MODWU {
c := gc.Prog(x86.AXORL)
c := s.Prog(x86.AXORL)
c.From.Type = obj.TYPE_REG
c.From.Reg = x86.REG_DX
c.To.Type = obj.TYPE_REG
c.To.Reg = x86.REG_DX
}
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = x
// signed division, rest of the check for -1 case
if j != nil {
j2 := gc.Prog(obj.AJMP)
j2 := s.Prog(obj.AJMP)
j2.To.Type = obj.TYPE_BRANCH
var n *obj.Prog
if v.Op == ssa.Op386DIVL || v.Op == ssa.Op386DIVW {
// n * -1 = -n
n = gc.Prog(x86.ANEGL)
n = s.Prog(x86.ANEGL)
n.To.Type = obj.TYPE_REG
n.To.Reg = x86.REG_AX
} else {
// n % -1 == 0
n = gc.Prog(x86.AXORL)
n = s.Prog(x86.AXORL)
n.From.Type = obj.TYPE_REG
n.From.Reg = x86.REG_DX
n.To.Type = obj.TYPE_REG
@ -263,14 +263,14 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
// Arg[0] is already in AX as it's the only register we allow
// and DX is the only output we care about (the high bits)
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = v.Args[1].Reg()
// IMULB puts the high portion in AH instead of DL,
// so move it to DL for consistency
if v.Type.Size() == 1 {
m := gc.Prog(x86.AMOVB)
m := s.Prog(x86.AMOVB)
m.From.Type = obj.TYPE_REG
m.From.Reg = x86.REG_AH
m.To.Type = obj.TYPE_REG
@ -279,7 +279,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
case ssa.Op386MULLQU:
// AX * args[1], high 32 bits in DX (result[0]), low 32 bits in AX (result[1]).
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = v.Args[1].Reg()
@ -291,12 +291,12 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if r != v.Args[0].Reg() {
v.Fatalf("input[0] and output not in same register %s", v.LongString())
}
p := gc.Prog(x86.AADDL)
p := s.Prog(x86.AADDL)
p.From.Type = obj.TYPE_REG
p.To.Type = obj.TYPE_REG
p.To.Reg = r
p.From.Reg = v.Args[1].Reg()
p = gc.Prog(x86.ARCRL)
p = s.Prog(x86.ARCRL)
p.From.Type = obj.TYPE_CONST
p.From.Offset = 1
p.To.Type = obj.TYPE_REG
@ -307,25 +307,25 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
a := v.Args[0].Reg()
if r == a {
if v.AuxInt == 1 {
p := gc.Prog(x86.AINCL)
p := s.Prog(x86.AINCL)
p.To.Type = obj.TYPE_REG
p.To.Reg = r
return
}
if v.AuxInt == -1 {
p := gc.Prog(x86.ADECL)
p := s.Prog(x86.ADECL)
p.To.Type = obj.TYPE_REG
p.To.Reg = r
return
}
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_CONST
p.From.Offset = v.AuxInt
p.To.Type = obj.TYPE_REG
p.To.Reg = r
return
}
p := gc.Prog(x86.ALEAL)
p := s.Prog(x86.ALEAL)
p.From.Type = obj.TYPE_MEM
p.From.Reg = a
p.From.Offset = v.AuxInt
@ -337,7 +337,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if r != v.Args[0].Reg() {
v.Fatalf("input[0] and output not in same register %s", v.LongString())
}
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_CONST
p.From.Offset = v.AuxInt
p.To.Type = obj.TYPE_REG
@ -362,14 +362,14 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if r != v.Args[0].Reg() {
v.Fatalf("input[0] and output not in same register %s", v.LongString())
}
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_CONST
p.From.Offset = v.AuxInt
p.To.Type = obj.TYPE_REG
p.To.Reg = r
case ssa.Op386SBBLcarrymask:
r := v.Reg()
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = r
p.To.Type = obj.TYPE_REG
@ -377,7 +377,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
case ssa.Op386LEAL1, ssa.Op386LEAL2, ssa.Op386LEAL4, ssa.Op386LEAL8:
r := v.Args[0].Reg()
i := v.Args[1].Reg()
p := gc.Prog(x86.ALEAL)
p := s.Prog(x86.ALEAL)
switch v.Op {
case ssa.Op386LEAL1:
p.From.Scale = 1
@ -398,7 +398,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
case ssa.Op386LEAL:
p := gc.Prog(x86.ALEAL)
p := s.Prog(x86.ALEAL)
p.From.Type = obj.TYPE_MEM
p.From.Reg = v.Args[0].Reg()
gc.AddAux(&p.From, v)
@ -406,26 +406,26 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
p.To.Reg = v.Reg()
case ssa.Op386CMPL, ssa.Op386CMPW, ssa.Op386CMPB,
ssa.Op386TESTL, ssa.Op386TESTW, ssa.Op386TESTB:
opregreg(v.Op.Asm(), v.Args[1].Reg(), v.Args[0].Reg())
opregreg(s, v.Op.Asm(), v.Args[1].Reg(), v.Args[0].Reg())
case ssa.Op386UCOMISS, ssa.Op386UCOMISD:
// Go assembler has swapped operands for UCOMISx relative to CMP,
// must account for that right here.
opregreg(v.Op.Asm(), v.Args[0].Reg(), v.Args[1].Reg())
opregreg(s, v.Op.Asm(), v.Args[0].Reg(), v.Args[1].Reg())
case ssa.Op386CMPLconst, ssa.Op386CMPWconst, ssa.Op386CMPBconst:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = v.Args[0].Reg()
p.To.Type = obj.TYPE_CONST
p.To.Offset = v.AuxInt
case ssa.Op386TESTLconst, ssa.Op386TESTWconst, ssa.Op386TESTBconst:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_CONST
p.From.Offset = v.AuxInt
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Args[0].Reg()
case ssa.Op386MOVLconst:
x := v.Reg()
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_CONST
p.From.Offset = v.AuxInt
p.To.Type = obj.TYPE_REG
@ -437,7 +437,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
}
case ssa.Op386MOVSSconst, ssa.Op386MOVSDconst:
x := v.Reg()
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_FCONST
p.From.Val = math.Float64frombits(uint64(v.AuxInt))
p.To.Type = obj.TYPE_REG
@ -449,7 +449,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
} else {
literal = fmt.Sprintf("$f32.%08x", math.Float32bits(float32(math.Float64frombits(uint64(v.AuxInt)))))
}
p := gc.Prog(x86.ALEAL)
p := s.Prog(x86.ALEAL)
p.From.Type = obj.TYPE_MEM
p.From.Name = obj.NAME_EXTERN
p.From.Sym = obj.Linklookup(gc.Ctxt, literal, 0)
@ -457,21 +457,21 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
case ssa.Op386MOVSSconst2, ssa.Op386MOVSDconst2:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_MEM
p.From.Reg = v.Args[0].Reg()
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
case ssa.Op386MOVSSload, ssa.Op386MOVSDload, ssa.Op386MOVLload, ssa.Op386MOVWload, ssa.Op386MOVBload, ssa.Op386MOVBLSXload, ssa.Op386MOVWLSXload:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_MEM
p.From.Reg = v.Args[0].Reg()
gc.AddAux(&p.From, v)
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
case ssa.Op386MOVSDloadidx8:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_MEM
p.From.Reg = v.Args[0].Reg()
gc.AddAux(&p.From, v)
@ -480,7 +480,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
case ssa.Op386MOVLloadidx4, ssa.Op386MOVSSloadidx4:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_MEM
p.From.Reg = v.Args[0].Reg()
gc.AddAux(&p.From, v)
@ -489,7 +489,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
case ssa.Op386MOVWloadidx2:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_MEM
p.From.Reg = v.Args[0].Reg()
gc.AddAux(&p.From, v)
@ -503,7 +503,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if i == x86.REG_SP {
r, i = i, r
}
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_MEM
p.From.Reg = r
p.From.Scale = 1
@ -512,14 +512,14 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
case ssa.Op386MOVSSstore, ssa.Op386MOVSDstore, ssa.Op386MOVLstore, ssa.Op386MOVWstore, ssa.Op386MOVBstore:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = v.Args[1].Reg()
p.To.Type = obj.TYPE_MEM
p.To.Reg = v.Args[0].Reg()
gc.AddAux(&p.To, v)
case ssa.Op386MOVSDstoreidx8:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = v.Args[2].Reg()
p.To.Type = obj.TYPE_MEM
@ -528,7 +528,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
p.To.Index = v.Args[1].Reg()
gc.AddAux(&p.To, v)
case ssa.Op386MOVSSstoreidx4, ssa.Op386MOVLstoreidx4:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = v.Args[2].Reg()
p.To.Type = obj.TYPE_MEM
@ -537,7 +537,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
p.To.Index = v.Args[1].Reg()
gc.AddAux(&p.To, v)
case ssa.Op386MOVWstoreidx2:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = v.Args[2].Reg()
p.To.Type = obj.TYPE_MEM
@ -551,7 +551,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if i == x86.REG_SP {
r, i = i, r
}
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = v.Args[2].Reg()
p.To.Type = obj.TYPE_MEM
@ -560,7 +560,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
p.To.Index = i
gc.AddAux(&p.To, v)
case ssa.Op386MOVLstoreconst, ssa.Op386MOVWstoreconst, ssa.Op386MOVBstoreconst:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_CONST
sc := v.AuxValAndOff()
p.From.Offset = sc.Val()
@ -568,7 +568,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
p.To.Reg = v.Args[0].Reg()
gc.AddAux2(&p.To, v, sc.Off())
case ssa.Op386MOVLstoreconstidx1, ssa.Op386MOVLstoreconstidx4, ssa.Op386MOVWstoreconstidx1, ssa.Op386MOVWstoreconstidx2, ssa.Op386MOVBstoreconstidx1:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_CONST
sc := v.AuxValAndOff()
p.From.Offset = sc.Val()
@ -593,14 +593,14 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
ssa.Op386CVTSL2SS, ssa.Op386CVTSL2SD,
ssa.Op386CVTTSS2SL, ssa.Op386CVTTSD2SL,
ssa.Op386CVTSS2SD, ssa.Op386CVTSD2SS:
opregreg(v.Op.Asm(), v.Reg(), v.Args[0].Reg())
opregreg(s, v.Op.Asm(), v.Reg(), v.Args[0].Reg())
case ssa.Op386DUFFZERO:
p := gc.Prog(obj.ADUFFZERO)
p := s.Prog(obj.ADUFFZERO)
p.To.Type = obj.TYPE_ADDR
p.To.Sym = gc.Duffzero
p.To.Offset = v.AuxInt
case ssa.Op386DUFFCOPY:
p := gc.Prog(obj.ADUFFCOPY)
p := s.Prog(obj.ADUFFCOPY)
p.To.Type = obj.TYPE_ADDR
p.To.Sym = gc.Duffcopy
p.To.Offset = v.AuxInt
@ -612,14 +612,14 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
x := v.Args[0].Reg()
y := v.Reg()
if x != y {
opregreg(moveByType(v.Type), y, x)
opregreg(s, moveByType(v.Type), y, x)
}
case ssa.OpLoadReg:
if v.Type.IsFlags() {
v.Fatalf("load flags not implemented: %v", v.LongString())
return
}
p := gc.Prog(loadByType(v.Type))
p := s.Prog(loadByType(v.Type))
gc.AddrAuto(&p.From, v.Args[0])
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
@ -629,7 +629,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
v.Fatalf("store flags not implemented: %v", v.LongString())
return
}
p := gc.Prog(storeByType(v.Type))
p := s.Prog(storeByType(v.Type))
p.From.Type = obj.TYPE_REG
p.From.Reg = v.Args[0].Reg()
gc.AddrAuto(&p.To, v)
@ -642,7 +642,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
// near CanUse1InsnTLS for a detailed explanation of these instructions.
if x86.CanUse1InsnTLS(gc.Ctxt) {
// MOVL (TLS), r
p := gc.Prog(x86.AMOVL)
p := s.Prog(x86.AMOVL)
p.From.Type = obj.TYPE_MEM
p.From.Reg = x86.REG_TLS
p.To.Type = obj.TYPE_REG
@ -650,12 +650,12 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
} else {
// MOVL TLS, r
// MOVL (r)(TLS*1), r
p := gc.Prog(x86.AMOVL)
p := s.Prog(x86.AMOVL)
p.From.Type = obj.TYPE_REG
p.From.Reg = x86.REG_TLS
p.To.Type = obj.TYPE_REG
p.To.Reg = r
q := gc.Prog(x86.AMOVL)
q := s.Prog(x86.AMOVL)
q.From.Type = obj.TYPE_MEM
q.From.Reg = r
q.From.Index = x86.REG_TLS
@ -672,13 +672,13 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if r != v.Args[0].Reg() {
v.Fatalf("input[0] and output not in same register %s", v.LongString())
}
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.To.Type = obj.TYPE_REG
p.To.Reg = r
case ssa.Op386BSFL, ssa.Op386BSFW,
ssa.Op386BSRL, ssa.Op386BSRW,
ssa.Op386SQRTSD:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = v.Args[0].Reg()
p.To.Type = obj.TYPE_REG
@ -690,38 +690,38 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
ssa.Op386SETB, ssa.Op386SETBE,
ssa.Op386SETORD, ssa.Op386SETNAN,
ssa.Op386SETA, ssa.Op386SETAE:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
case ssa.Op386SETNEF:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
q := gc.Prog(x86.ASETPS)
q := s.Prog(x86.ASETPS)
q.To.Type = obj.TYPE_REG
q.To.Reg = x86.REG_AX
opregreg(x86.AORL, v.Reg(), x86.REG_AX)
opregreg(s, x86.AORL, v.Reg(), x86.REG_AX)
case ssa.Op386SETEQF:
p := gc.Prog(v.Op.Asm())
p := s.Prog(v.Op.Asm())
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
q := gc.Prog(x86.ASETPC)
q := s.Prog(x86.ASETPC)
q.To.Type = obj.TYPE_REG
q.To.Reg = x86.REG_AX
opregreg(x86.AANDL, v.Reg(), x86.REG_AX)
opregreg(s, x86.AANDL, v.Reg(), x86.REG_AX)
case ssa.Op386InvertFlags:
v.Fatalf("InvertFlags should never make it to codegen %v", v.LongString())
case ssa.Op386FlagEQ, ssa.Op386FlagLT_ULT, ssa.Op386FlagLT_UGT, ssa.Op386FlagGT_ULT, ssa.Op386FlagGT_UGT:
v.Fatalf("Flag* ops should never make it to codegen %v", v.LongString())
case ssa.Op386REPSTOSL:
gc.Prog(x86.AREP)
gc.Prog(x86.ASTOSL)
s.Prog(x86.AREP)
s.Prog(x86.ASTOSL)
case ssa.Op386REPMOVSL:
gc.Prog(x86.AREP)
gc.Prog(x86.AMOVSL)
s.Prog(x86.AREP)
s.Prog(x86.AMOVSL)
case ssa.Op386LoweredNilCheck:
// Issue a load which will fault if the input is nil.
// TODO: We currently use the 2-byte instruction TESTB AX, (reg).
@ -729,7 +729,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
// but it doesn't have false dependency on AX.
// Or maybe allocate an output register and use MOVL (reg),reg2 ?
// That trades clobbering flags for clobbering a register.
p := gc.Prog(x86.ATESTB)
p := s.Prog(x86.ATESTB)
p.From.Type = obj.TYPE_REG
p.From.Reg = x86.REG_AX
p.To.Type = obj.TYPE_MEM
@ -775,7 +775,7 @@ func ssaGenBlock(s *gc.SSAGenState, b, next *ssa.Block) {
switch b.Kind {
case ssa.BlockPlain:
if b.Succs[0].Block() != next {
p := gc.Prog(obj.AJMP)
p := s.Prog(obj.AJMP)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: p, B: b.Succs[0].Block()})
}
@ -783,25 +783,25 @@ func ssaGenBlock(s *gc.SSAGenState, b, next *ssa.Block) {
// defer returns in rax:
// 0 if we should continue executing
// 1 if we should jump to deferreturn call
p := gc.Prog(x86.ATESTL)
p := s.Prog(x86.ATESTL)
p.From.Type = obj.TYPE_REG
p.From.Reg = x86.REG_AX
p.To.Type = obj.TYPE_REG
p.To.Reg = x86.REG_AX
p = gc.Prog(x86.AJNE)
p = s.Prog(x86.AJNE)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: p, B: b.Succs[1].Block()})
if b.Succs[0].Block() != next {
p := gc.Prog(obj.AJMP)
p := s.Prog(obj.AJMP)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: p, B: b.Succs[0].Block()})
}
case ssa.BlockExit:
gc.Prog(obj.AUNDEF) // tell plive.go that we never reach here
s.Prog(obj.AUNDEF) // tell plive.go that we never reach here
case ssa.BlockRet:
gc.Prog(obj.ARET)
s.Prog(obj.ARET)
case ssa.BlockRetJmp:
p := gc.Prog(obj.AJMP)
p := s.Prog(obj.AJMP)
p.To.Type = obj.TYPE_MEM
p.To.Name = obj.NAME_EXTERN
p.To.Sym = b.Aux.(*obj.LSym)
@ -822,19 +822,19 @@ func ssaGenBlock(s *gc.SSAGenState, b, next *ssa.Block) {
var p *obj.Prog
switch next {
case b.Succs[0].Block():
p = gc.Prog(jmp.invasm)
p = s.Prog(jmp.invasm)
likely *= -1
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: p, B: b.Succs[1].Block()})
case b.Succs[1].Block():
p = gc.Prog(jmp.asm)
p = s.Prog(jmp.asm)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: p, B: b.Succs[0].Block()})
default:
p = gc.Prog(jmp.asm)
p = s.Prog(jmp.asm)
p.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: p, B: b.Succs[0].Block()})
q := gc.Prog(obj.AJMP)
q := s.Prog(obj.AJMP)
q.To.Type = obj.TYPE_BRANCH
s.Branches = append(s.Branches, gc.Branch{P: q, B: b.Succs[1].Block()})
}