Re: [Mesa-dev] [PATCH 5/8] PowerPC: clear Altivec NJ bit

2012-11-28 Thread Roland Scheidegger
Am 28.11.2012 13:47, schrieb Adhemerval Zanella: > On 11/22/2012 07:33 PM, Roland Scheidegger wrote: >> Am 22.11.2012 21:34, schrieb Adhemerval Zanella: >>> Mostly PowerPC system sets the Altivec NJ bit to 1 so denormal number >>> are handled as 0. Initially it was a performance configuration, sinc

Re: [Mesa-dev] [PATCH 5/8] PowerPC: clear Altivec NJ bit

2012-11-28 Thread Adhemerval Zanella
On 11/22/2012 07:33 PM, Roland Scheidegger wrote: > Am 22.11.2012 21:34, schrieb Adhemerval Zanella: >> Mostly PowerPC system sets the Altivec NJ bit to 1 so denormal number >> are handled as 0. Initially it was a performance configuration, since >> denormal handling tended to be costly. However it

Re: [Mesa-dev] [PATCH 5/8] PowerPC: clear Altivec NJ bit

2012-11-22 Thread Roland Scheidegger
Am 22.11.2012 21:34, schrieb Adhemerval Zanella: > Mostly PowerPC system sets the Altivec NJ bit to 1 so denormal number > are handled as 0. Initially it was a performance configuration, since > denormal handling tended to be costly. However it is not the case on > more recent PowerPC chips (POWER6

[Mesa-dev] [PATCH 5/8] PowerPC: clear Altivec NJ bit

2012-11-22 Thread Adhemerval Zanella
Mostly PowerPC system sets the Altivec NJ bit to 1 so denormal number are handled as 0. Initially it was a performance configuration, since denormal handling tended to be costly. However it is not the case on more recent PowerPC chips (POWER6 and onwards). This patch enforces the clear of NJ bit i