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Re: Checking out PR4483 (constant overflow on PPC, problems compiling Linux kernel)
- From: Richard Henderson <rth at redhat dot com>
- To: Corey Minyard <minyard at acm dot org>
- Cc: David Edelsohn <dje at watson dot ibm dot com>, gcc-patches at gcc dot gnu dot org
- Date: Wed, 28 Nov 2001 15:28:14 -0800
- Subject: Re: Checking out PR4483 (constant overflow on PPC, problems compiling Linux kernel)
- References: <200111282001.PAA28396@makai.watson.ibm.com> <3C05501A.9080604@acm.org>
On Wed, Nov 28, 2001 at 02:59:06PM -0600, Corey Minyard wrote:
> I agree about being careful, but since the dest is an SI mode register,
> does it really matter?
Yes. One way is Correct, the other Isn't.
In particular, you'll almost certainly fall over internal
consistency checks in various parts of the compiler.
r~