constraining index register

Paul Edwards
Thu Oct 14 13:24:01 GMT 2021


In certain places, the i370 target of GCC 3.2.3 will use a
base + index + displacement operand.

How can I add a constraint to say that the index must be
between 0 and 0x7fffffff?

I want to stop 0xffffffff from being generated when I have:

char *p


Thanks. Paul.

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