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Re: Non-call exceptions versus cse
- From: Richard Henderson <rth at redhat dot com>
- To: Andrew Haley <aph at redhat dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Thu, 12 Dec 2002 11:18:58 -0800
- Subject: Re: Non-call exceptions versus cse
- References: <200211191621.gAJGLTs10581@cuddles.cambridge.redhat.com> <15834.30922.508706.58112@cuddles.cambridge.redhat.com> <15862.8682.417620.249110@cuddles.cambridge.redhat.com>
On Tue, Dec 10, 2002 at 05:18:34PM +0000, Andrew Haley wrote:
> This is the case I'm interested in:
>
> a = ({ tmp = foo->bar; tmp; });
>
> We must not convert this into
>
> a = foo->bar;
I don't believe this.
I do believe that there are problems in CSE wrt this problem,
since it doesn't use the CFG properly, but I can't see how this
is related at all.
r~