On Wed, Mar 23, 2011 at 10:28:04AM -0400, David Fang wrote:
>> It was originally thought that the failure was due to 10.5 using
>> gcc-4.0, but the test still fails the same way with revision -4 which
>> forces gcc-4.2.
>>
>> For the record, ppl9-0.11.2-1 does pass tests OK. Would it make sense
>> to update gcc-4(4/5) to use ppl9?
>
> Jack and I recently discussed a strategy for upgrading the
> gmp/mpfr/mpc/ppl/cloog dependencies offline. Jack, care to summarize?
>
> Fang
Currently mpc and ppl9 are built against ppl9. The gcc44-4.4.5 package
however is incompatible with ppl9 and must be built against ppl for its graphite
support. The gcc45-4.5.3 (unreleased) package can be built against ppl9 but
requires the legacy cloog-ppl which is currently built against ppl. So we have
two options to complete the migration to gmp5/libmpfr4...
1) Patch ppl so it can be built against gmp5 and rebuild cloog against gmp5
as well as gcc44-4.4.5 and gcc45-4.5.3 against gmp5/libmpfr4.
2) Disable graphite in gcc44-4.4.5 using --without-ppl --without-cloog and
rebuild cloog against ppl9/gmp5 and gcc45-4.5.3 against
ppl9/gmp5/libmpfr4/cloog.
I favor the second option myself since graphite is barely usable in gcc44. In
gcc45, graphite works reasonably well but it won't be until gcc46 that graphite
never misses vertorization opportunities.
Jack
>
> David Fang
> http://www.csl.cornell.edu/~fang/
> http://www.achronix.com/
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