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Re: changing "configure" to default to "gcc -g -O2 -fwrapv ..."
From: |
Richard Kenner |
Subject: |
Re: changing "configure" to default to "gcc -g -O2 -fwrapv ..." |
Date: |
Sun, 31 Dec 2006 08:33:05 EST |
> On the other hand, C does not have a way to tell the compiler:
>
> "this is my loop variable, it must not be modified inside the loop"
>
> neither you can say:
>
> "this is the upper bound of the loop, it must not be modified"
>
> either.
No, but the compiler can almost always trivially determine that nothing in
the loop can modify the variable, so I'm not sure I understand your point.
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", (continued)
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Richard Kenner, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Vincent Lefevre, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Duncan Sands, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Richard Kenner, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Robert Dewar, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Vincent Lefevre, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Robert Dewar, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Vincent Lefevre, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Richard Kenner, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Michael Veksler, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...",
Richard Kenner <=
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Michael Veksler, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Ian Lance Taylor, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Gabriel Dos Reis, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Richard Guenther, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Zdenek Dvorak, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Duncan Sands, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Richard Guenther, 2006/12/31
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Richard Kenner, 2006/12/30
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Robert Dewar, 2006/12/30
- Re: changing "configure" to default to "gcc -g -O2 -fwrapv ...", Richard Kenner, 2006/12/30