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

From: Gabriel Dos Reis
Subject: Re: changing "configure" to default to "gcc -g -O2 -fwrapv ..."
Date: 31 Dec 2006 20:51:59 +0100

Bernd Schmidt <address@hidden> writes:


| >> You say you doubt it affects performance.  Based on what?  Facts
| >> please, not guesses and hand-waiving...
| > The burden of proof ought to be on the guys proposing -O2
| > optimizations that break longstanding code, not on the skeptics.
| IMHO the burden of proof should be on the people who are surprised
| that interesting things happen when they write in a language that
| isn't C and then try to pass it through a C compiler.

I don't believe that statement is accurate.  You will be hard pressed
to state precisely what "a language that isn't C" means.

The ISO C standard defines an unbounded family of languages.  And
certainly the wrapping semantics is part of that family.

-- Gaby

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