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

2006-12-31 Thread Seongbae Park
rop 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 "Seongb

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

2006-12-29 Thread Seongbae Park
On 12/29/06, Paul Eggert <[EMAIL PROTECTED]> wrote: "Seongbae Park" <[EMAIL PROTECTED]> writes: > On 12/29/06, Paul Eggert <[EMAIL PROTECTED]> wrote: >> -O2 does not currently imply '-ffast-math'ish optimizations even >> though the C st

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

2006-12-29 Thread Seongbae Park
implementation can't, as long as it claims any conformity to IEC 60559. -- #pragma ident "Seongbae Park, compiler, http://seongbae.blogspot.com";

Re: GCC optimizes integer overflow: bug or feature?

2006-12-20 Thread Seongbae Park
lated aspect). I liked the following paper (for general users, not for the compiler developers, mind you): http://www.aristeia.com/Papers/DDJ_Jul_Aug_2004_revised.pdf -- #pragma ident "Seongbae Park, compiler, http://seongbae.blogspot.com";