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例如:
error: floating point constant invalid for type %3 = and i8 0x80, %2 ^
从IR 参考手册的扫描来看,看起来十六进制文字被保留用于表示无法以合理位数精确表示的浮点数。
这解释了为什么您的错误消息说floating point constant无效。
floating point constant