ATableFill

	ALast // Sentinel: End of low-level WebAssembly instructions.

	ARESUMEPOINT
	// ACALLNORESUME is a call which is not followed by a resume point.
	// It is allowed inside of WebAssembly blocks, whereas obj.ACALL is not.
	// However, it is not allowed to switch goroutines while inside of an ACALLNORESUME call.
	ACALLNORESUME

	ARETUNWIND

	AMOVB
	AMOVH
	AMOVW
	AMOVD

	AWORD
	ALAST
)

			Offset: 0,
		}
		p = appendp(p, AMOVD, regAddr(REGCTXT), ctxtp)

		// maymorestack must not itself preempt because we
		// don't have full stack information, so this can be
		// ACALLNORESUME.
		p = appendp(p, ACALLNORESUME, constAddr(0))
		// See ../x86/obj6.go
		sym := ctxt.LookupABI(ctxt.Flag_maymorestack, s.ABI())
		p.To = obj.Addr{Type: obj.TYPE_MEM, Name: obj.NAME_EXTERN, Sym: sym}

		// Restore REGCTXT.

		i32Const(s, 0)
		i32Const(s, int32(v.AuxInt))
		s.Prog(wasm.AMemoryFill)

	case ssa.OpWasmLoweredNilCheck:
		getValue64(s, v.Args[0])
		s.Prog(wasm.AI64Eqz)
		s.Prog(wasm.AIf)
		p := s.Prog(wasm.ACALLNORESUME)
		p.To = obj.Addr{Type: obj.TYPE_MEM, Name: obj.NAME_EXTERN, Sym: ir.Syms.SigPanic}
		s.Prog(wasm.AEnd)
		if logopt.Enabled() {
			logopt.LogOpt(v.Pos, "nilcheck", "genssa", v.Block.Func.Name)
		}