Re: [PATCH][AArch64] Improve Cortex-A53 FP scheduler

2017-06-14 Thread Richard Earnshaw (lists)
On 12/06/17 14:16, Wilco Dijkstra wrote: > The Cortex-A53 scheduler model of FMAC bypass is not quite right > for FMAC to FMAC forwarding. Experiments also show the latencies of > FP operations are too high as well. Rather than adding more bypasses, > adjust the latencies of FP instructions to ge

Re: [PATCH][AArch64] Improve Cortex-A53 FP scheduler

2017-06-14 Thread James Greenhalgh
On Mon, Jun 12, 2017 at 02:16:44PM +0100, Wilco Dijkstra wrote: > The Cortex-A53 scheduler model of FMAC bypass is not quite right > for FMAC to FMAC forwarding. Experiments also show the latencies of > FP operations are too high as well. Rather than adding more bypasses, > adjust the latencies o

[PATCH][AArch64] Improve Cortex-A53 FP scheduler

2017-06-12 Thread Wilco Dijkstra
The Cortex-A53 scheduler model of FMAC bypass is not quite right for FMAC to FMAC forwarding. Experiments also show the latencies of FP operations are too high as well. Rather than adding more bypasses, adjust the latencies of FP instructions to get a better schedule on average. As a result SPEC