Re: [PATCH, rs6000] Correct programmer access to vperm for little endian

2013-11-15 Thread David Edelsohn
On Fri, Nov 15, 2013 at 12:45 PM, Bill Schmidt wrote: > Hi, > > A previous patch of mine was misguided. It modified the altivec_vperm_* > patterns to use the little endian conversion trick of reversing the > input operands and complementing the permute control vector. > > Looking at the Altivec m

[PATCH, rs6000] Correct programmer access to vperm for little endian

2013-11-15 Thread Bill Schmidt
Hi, A previous patch of mine was misguided. It modified the altivec_vperm_* patterns to use the little endian conversion trick of reversing the input operands and complementing the permute control vector. Looking at the Altivec manual, we really can't do this. These patterns need to be direct p