From: "Paul Edwards" <mutazilah@gmail.com>
To: <gcc@gcc.gnu.org>
Subject: constraining index register
Date: Fri, 15 Oct 2021 00:24:01 +1100 [thread overview]
Message-ID: <335E943550E9469993DBC1663087281F@DESKTOPQV5ISEM> (raw)
Hi.
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
p[-1];
Thanks. Paul.
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