Re: [PATCH], Improve moving SFmode to GPR on PowerPC, #5 of 8

2017-09-26 Thread Segher Boessenkool
Hi! On Tue, Sep 26, 2017 at 10:39:06AM -0400, Michael Meissner wrote: > * config/rs6000/vsx.md (vsx_xscvdpsp_scalar): Use "ww" constraint > instead of "f" to allow SFmode to be in traditional Altivec > registers. Okay. Thanks, Segher

Re: [PATCH], Improve moving SFmode to GPR on PowerPC, #5 of 8

2017-09-26 Thread Michael Meissner
Off list, Segher asked that I break the patch eliminating a shift right when transfering SFmode from a vector register to a GPR register down into smaller chunks. The power7 and power8 instructions that convert values in the double precision format to single precision actually duplicate the 32-bit