是否可以在LLVM IR代码中指定一个十六进制数字? [英] Is it possible to specify a hexadecimal number in LLVM IR code?

问题描述

例如:

error: floating point constant invalid for type
      %3 = and i8 0x80, %2
                  ^

推荐答案

来自 IR参考手册，看起来十六进制字面量被保留用于表示浮点数，而浮点数不能以合理的位数精确表示.

From a scan of the IR reference manual, it looks like hexadecimal literals are reserved for the representation of floating point numbers that cannot be exactly represented in a reasonable number of digits.

这解释了为什么您的错误消息指出floating point constant无效.

Which explains why your error message says that the floating point constant is invalid.

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