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From: "Giovanni Bajo" <giovannibajo@libero.it>
To: "Joseph S. Myers" <jsm@polyomino.org.uk>
Cc: "Rakesh Kumar, Noida" <rakesh.kumar@noida.hcltech.com>,
	<gcc@gcc.gnu.org>
References: <33BC33A9E76474479B76AD0DE8A1697202C38D@exch-ntd.nec.noida.hcltech.com><031701c4900d$a58ccfe0$bf4e2597@bagio> <Pine.LNX.4.61.0409011035050.26980@digraph.polyomino.org.uk>
Subject: Re: stack height reduction in tree-SSA
Date: Wed, 01 Sep 2004 10:50:00 -0000
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Joseph S. Myers wrote:
> On Wed, 1 Sep 2004, Giovanni Bajo wrote:
> 
>> void foo(void)
>> {
>>    int a, b;
>> 
>>    a = get();
>>    use_it(&a);
>> 
>>    b = get();
>>    use_it(&b);
>> }
>> 
>> could be optimized to use only one variable on the stack. I have the
>> secret 
> 
> In this example, a is still live during the second calls to get() and
> use_it(); the first call to use_it() could have saved a's address.

Right, sorry for the bogus example.

Giovanni Bajo