Re: [FFmpeg-devel] [PATCH 3/5] x86inc: Prefer r14/r15 over r12/r13 on x86-64

2017-06-09 Thread Ronald S. Bultje
Hi, On Thu, Jun 8, 2017 at 7:05 PM, James Darnley wrote: > From: Henrik Gramner > > Due to a peculiarity in the ModR/M addressing encoding, the r12 and r13 > registers sometimes requires an additional byte when used as a base > register. > > r14 and r15 doesn't have that issue, so prefer using

[FFmpeg-devel] [PATCH 3/5] x86inc: Prefer r14/r15 over r12/r13 on x86-64

2017-06-08 Thread James Darnley
From: Henrik Gramner Due to a peculiarity in the ModR/M addressing encoding, the r12 and r13 registers sometimes requires an additional byte when used as a base register. r14 and r15 doesn't have that issue, so prefer using them. --- libavutil/x86/x86inc.asm | 16 1 file change