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Re: changing "configure" to default to "gcc -g -O2 -fwrapv ..."

From: Seongbae Park
Subject: Re: changing "configure" to default to "gcc -g -O2 -fwrapv ..."
Date: Sun, 31 Dec 2006 17:54:01 -0800

On 12/31/06, Daniel Berlin <address@hidden> wrote:
> I added -fwrapv to the Dec30 run of SPEC at
> and

Note the distinct drop in performance across almost all the benchmarks
on Dec 30, including popular programs like bzip2 and gzip.

Also, this is only on x86 -
other targets that benefit more from software pipelinine/modulo scheduling
may suffer even more than x86, especially on the FP side.
#pragma ident "Seongbae Park, compiler,";

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