mirror of https://github.com/golang/go.git
runtime: remove the meaningless offset of 8 for duffzero on loong64
Currently we subtract 8 from offset when calling duffzero because 8 is added to offset in the duffzero implementation. This operation is meaningless, so remove it. Change-Id: I7e451d04d7e98ccafe711645d81d3aadf376766f Reviewed-on: https://go-review.googlesource.com/c/go/+/487295 Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Meidan Li <limeidan@loongson.cn> Reviewed-by: WANG Xuerui <git@xen0n.name> Run-TryBot: WANG Xuerui <git@xen0n.name> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: xiaodong liu <teaofmoli@gmail.com> Reviewed-by: Carlos Amedee <carlos@golang.org> Reviewed-by: Keith Randall <khr@golang.org> Auto-Submit: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
parent
e3ef8d1810
commit
06f420fc19
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@ -5,6 +5,7 @@
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package loong64
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import (
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"cmd/compile/internal/base"
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"cmd/compile/internal/ir"
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"cmd/compile/internal/objw"
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"cmd/compile/internal/types"
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@ -16,34 +17,38 @@ func zerorange(pp *objw.Progs, p *obj.Prog, off, cnt int64, _ *uint32) *obj.Prog
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if cnt == 0 {
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return p
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}
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// Adjust the frame to account for LR.
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off += base.Ctxt.Arch.FixedFrameSize
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if cnt < int64(4*types.PtrSize) {
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for i := int64(0); i < cnt; i += int64(types.PtrSize) {
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p = pp.Append(p, loong64.AMOVV, obj.TYPE_REG, loong64.REGZERO, 0, obj.TYPE_MEM, loong64.REGSP, 8+off+i)
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p = pp.Append(p, loong64.AMOVV, obj.TYPE_REG, loong64.REGZERO, 0, obj.TYPE_MEM, loong64.REGSP, off+i)
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}
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} else if cnt <= int64(128*types.PtrSize) {
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p = pp.Append(p, loong64.AADDV, obj.TYPE_CONST, 0, 8+off-8, obj.TYPE_REG, loong64.REGRT1, 0)
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p = pp.Append(p, loong64.AADDV, obj.TYPE_CONST, 0, off, obj.TYPE_REG, loong64.REGRT1, 0)
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p.Reg = loong64.REGSP
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p = pp.Append(p, obj.ADUFFZERO, obj.TYPE_NONE, 0, 0, obj.TYPE_MEM, 0, 0)
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p.To.Name = obj.NAME_EXTERN
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p.To.Sym = ir.Syms.Duffzero
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p.To.Offset = 8 * (128 - cnt/int64(types.PtrSize))
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} else {
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// ADDV $(8+frame+lo-8), SP, r1
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// ADDV $(off), SP, r1
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// ADDV $cnt, r1, r2
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// loop:
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// MOVV R0, (Widthptr)r1
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// MOVV R0, (r1)
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// ADDV $Widthptr, r1
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// BNE r1, r2, loop
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p = pp.Append(p, loong64.AADDV, obj.TYPE_CONST, 0, 8+off-8, obj.TYPE_REG, loong64.REGRT1, 0)
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p = pp.Append(p, loong64.AADDV, obj.TYPE_CONST, 0, off, obj.TYPE_REG, loong64.REGRT1, 0)
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p.Reg = loong64.REGSP
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p = pp.Append(p, loong64.AADDV, obj.TYPE_CONST, 0, cnt, obj.TYPE_REG, loong64.REGRT2, 0)
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p.Reg = loong64.REGRT1
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p = pp.Append(p, loong64.AMOVV, obj.TYPE_REG, loong64.REGZERO, 0, obj.TYPE_MEM, loong64.REGRT1, int64(types.PtrSize))
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p1 := p
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p = pp.Append(p, loong64.AMOVV, obj.TYPE_REG, loong64.REGZERO, 0, obj.TYPE_MEM, loong64.REGRT1, 0)
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loop := p
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p = pp.Append(p, loong64.AADDV, obj.TYPE_CONST, 0, int64(types.PtrSize), obj.TYPE_REG, loong64.REGRT1, 0)
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p = pp.Append(p, loong64.ABNE, obj.TYPE_REG, loong64.REGRT1, 0, obj.TYPE_BRANCH, 0, 0)
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p.Reg = loong64.REGRT2
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p.To.SetTarget(p1)
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p.To.SetTarget(loop)
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}
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return p
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@ -340,18 +340,13 @@ func ssaGenValue(s *ssagen.State, v *ssa.Value) {
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p.To.Type = obj.TYPE_REG
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p.To.Reg = v.Reg()
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case ssa.OpLOONG64DUFFZERO:
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// runtime.duffzero expects start address - 8 in R19
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p := s.Prog(loong64.ASUBVU)
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p.From.Type = obj.TYPE_CONST
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p.From.Offset = 8
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p.Reg = v.Args[0].Reg()
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p.To.Type = obj.TYPE_REG
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p.To.Reg = loong64.REG_R19
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p = s.Prog(obj.ADUFFZERO)
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// runtime.duffzero expects start address in R19
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p := s.Prog(obj.ADUFFZERO)
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p.To.Type = obj.TYPE_MEM
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p.To.Name = obj.NAME_EXTERN
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p.To.Sym = ir.Syms.Duffzero
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p.To.Offset = v.AuxInt
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case ssa.OpLOONG64LoweredZero:
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// SUBV $8, R19
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// MOVV R0, 8(R19)
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@ -289,9 +289,10 @@ func init() {
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aux: "Int64",
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argLength: 2,
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reg: regInfo{
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inputs: []regMask{gp},
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inputs: []regMask{buildReg("R19")},
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clobbers: buildReg("R19 R1"),
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},
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typ: "Mem",
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faultOnNilArg0: true,
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},
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@ -309,6 +310,7 @@ func init() {
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inputs: []regMask{buildReg("R20"), buildReg("R19")},
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clobbers: buildReg("R19 R20 R1"),
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},
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typ: "Mem",
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faultOnNilArg0: true,
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faultOnNilArg1: true,
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},
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@ -24540,7 +24540,7 @@ var opcodeTable = [...]opInfo{
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faultOnNilArg0: true,
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reg: regInfo{
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inputs: []inputInfo{
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{0, 1070596088}, // R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R23 R24 R25 R26 R27 R28 R29 R31
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{0, 262144}, // R19
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},
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clobbers: 262146, // R1 R19
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},
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@ -5,261 +5,261 @@
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#include "textflag.h"
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TEXT runtime·duffzero(SB), NOSPLIT|NOFRAME, $0-0
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
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ADDV $8, R19
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MOVV R0, 8(R19)
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MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
MOVV R0, 8(R19)
|
||||
MOVV R0, (R19)
|
||||
ADDV $8, R19
|
||||
RET
|
||||
|
||||
|
|
|
|||
|
|
@ -179,11 +179,11 @@ func copyARM64(w io.Writer) {
|
|||
|
||||
func zeroLOONG64(w io.Writer) {
|
||||
// R0: always zero
|
||||
// R19 (aka REGRT1): ptr to memory to be zeroed - 8
|
||||
// R19 (aka REGRT1): ptr to memory to be zeroed
|
||||
// On return, R19 points to the last zeroed dword.
|
||||
fmt.Fprintln(w, "TEXT runtime·duffzero(SB), NOSPLIT|NOFRAME, $0-0")
|
||||
for i := 0; i < 128; i++ {
|
||||
fmt.Fprintln(w, "\tMOVV\tR0, 8(R19)")
|
||||
fmt.Fprintln(w, "\tMOVV\tR0, (R19)")
|
||||
fmt.Fprintln(w, "\tADDV\t$8, R19")
|
||||
}
|
||||
fmt.Fprintln(w, "\tRET")
|
||||
|
|
|
|||
Loading…
Reference in New Issue