Module Name: src
Committed By: rin
Date: Thu Jun 2 00:32:14 UTC 2022
Modified Files:
src/sys/arch/powerpc/powerpc: fix_unaligned.c
Log Message:
As a tiny optimization, rearrange cases as follows:
(1) load/store of format D (base + disp)
(2) load/store of format X (base + index)
(3) lmw and stmw
For clang-compiled userland (*), their frequencies are roughly,
(1) > (2) >> (3) ~ 0.
Improvement should be minor; we are already trapped in the alignment
fault handler.
(*) clang unconditionally emits unaligned memory access for powerpc.
Undocumented -disable-ppc-unaligned option does not work...
To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/sys/arch/powerpc/powerpc/fix_unaligned.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
