Golang Builder.CreateRet示例

func (ri *directRetInfo) encode(ctx llvm.Context, allocaBuilder llvm.Builder, builder llvm.Builder, vals []llvm.Value) {
	if len(ri.retTypes) == 0 {
		builder.CreateRetVoid()
		return
	}

	var val llvm.Value
	switch ri.numResults {
	case 1:
		val = vals[0]
	default:
		val = llvm.Undef(ri.resultsType)
		for i, v := range vals {
			val = builder.CreateInsertValue(val, v, i, "")
		}
	}

	args := make([]llvm.Value, len(ri.retTypes))
	directEncode(ctx, allocaBuilder, builder, ri.retTypes, args, val)

	var retval llvm.Value
	switch len(ri.retTypes) {
	case 1:
		retval = args[0]
	default:
		retval = llvm.Undef(ctx.StructType(ri.retTypes, false))
		for i, a := range args {
			retval = builder.CreateInsertValue(retval, a, i, "")
		}
	}
	builder.CreateRet(retval)
}