On Mon, Nov 22, 2021 at 11:09:22AM -0500, David Edelsohn wrote: > On Mon, Nov 22, 2021 at 10:58 AM Bill Schmidt <wschm...@linux.ibm.com> wrote: > And do the absolute addressing for switch tables changes work on AIX? > I thought that Hao Chen only had done the work for PPC64 Linux ELF > syntax with promises of future changes to accommodate AIX as well.
In theory it should work on AIX, since the assembler has to support syntax to load the contents of a 64-bit address in memory. In the past, when I measured this (probably in the power8 days), the issue was occasionally having 64-bit loads for the switch tables insted of 32-bit loads and an add instruction meant a slow down for 1-2 benchmarks that were extremely sensitive to cache sizes. -- Michael Meissner, IBM PO Box 98, Ayer, Massachusetts, USA, 01432 email: meiss...@linux.ibm.com
