Re: [PATCH] trivial: the memset operation on a automatic array variableshould be optimized out by data initialization

[Jeremy Fitzhardinge]

Denis Cheng wrote:
> From: Denis Cheng <crquan@xxxxxxxxx>
>
> the explicit memset call could be optimized out by data initialization,
> thus all the fill working can be done by the compiler implicitly.
>   

How does the generated code change?  Does gcc do something stupid like
statically allocate a prototype structure full of zeros, and then memcpy
it in?  Or does it generate a series of explicit assignments for each
member?  Or does it generate a memset anyway?

Seems to me that this gives gcc the opportunity to be more stupid, and
the only right answer is what we're doing anyway.

    J
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