diff options
Diffstat (limited to 'src/cmd/compile/internal/arm')
| -rw-r--r-- | src/cmd/compile/internal/arm/galign.go | 1 | ||||
| -rw-r--r-- | src/cmd/compile/internal/arm/ggen.go | 21 |
2 files changed, 22 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/arm/galign.go b/src/cmd/compile/internal/arm/galign.go index 308b016026..53f57cd978 100644 --- a/src/cmd/compile/internal/arm/galign.go +++ b/src/cmd/compile/internal/arm/galign.go @@ -21,4 +21,5 @@ func Init() { gc.Thearch.SSAMarkMoves = func(s *gc.SSAGenState, b *ssa.Block) {} gc.Thearch.SSAGenValue = ssaGenValue gc.Thearch.SSAGenBlock = ssaGenBlock + gc.Thearch.ZeroAuto = zeroAuto } diff --git a/src/cmd/compile/internal/arm/ggen.go b/src/cmd/compile/internal/arm/ggen.go index 6dce0a4e80..1b97a4d0c9 100644 --- a/src/cmd/compile/internal/arm/ggen.go +++ b/src/cmd/compile/internal/arm/ggen.go @@ -92,6 +92,27 @@ func zerorange(p *obj.Prog, frame int64, lo int64, hi int64, r0 *uint32) *obj.Pr return p } +func zeroAuto(n *gc.Node, pp *obj.Prog) { + // Note: this code must not clobber any registers. + sym := gc.Linksym(n.Sym) + size := n.Type.Size() + p := gc.Prog(arm.AMOVW) + p.From.Type = obj.TYPE_CONST + p.From.Offset = 0 + p.To.Type = obj.TYPE_REG + p.To.Reg = arm.REGTMP + for i := int64(0); i < size; i += 4 { + p := gc.AddAsmAfter(arm.AMOVW, pp) + pp = p + p.From.Type = obj.TYPE_REG + p.From.Reg = arm.REGTMP + p.To.Type = obj.TYPE_MEM + p.To.Name = obj.NAME_AUTO + p.To.Reg = arm.REGSP + p.To.Offset = n.Xoffset + i + p.To.Sym = sym + } +} func ginsnop() { p := gc.Prog(arm.AAND) |