Re: Help understanding "VFP magic dust" in cortex-strings memcpy

2019-11-27 Thread Adhemerval Zanella
On 27/11/2019 12:03, Alexander Monakov wrote: > Hi! > > I've attempted to study the implementation of memcpy for 32-bit Arm cores in > Glibc (which is also found in arm-optimized-routines and first appeared in > Linaro's cortex-strings project), and I came across a peculiar snippet: > > #ifdef

Help understanding "VFP magic dust" in cortex-strings memcpy

2019-11-27 Thread Alexander Monakov
Hi! I've attempted to study the implementation of memcpy for 32-bit Arm cores in Glibc (which is also found in arm-optimized-routines and first appeared in Linaro's cortex-strings project), and I came across a peculiar snippet: #ifdef USE_VFP /* Magic dust alert! Force VFP on Cortex-A9.