On Fri, May 31, 2019 at 12:52:32PM +0100, Wilco Dijkstra wrote: > With -mcpu=generic the function alignment is currently 8, however almost all > supported cores prefer 16 or higher, so increase the default to 16:12. > This gives ~0.2% performance increase on SPECINT2017, while codesize is 0.12% > larger.
OK. Thanks, James > ChangeLog: > 2019-05-31 Wilco Dijkstra <wdijk...@arm.com> > > * config/aarch64/aarch64.c (generic_tunings): Set function alignment to > 16. > > -- > > diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c > index > 0023cb37bbae5afe9387840c1bb6b43586d4fac2..ed1422af6aab5e3c6eeea37ec57e69b64092a0ab > 100644 > --- a/gcc/config/aarch64/aarch64.c > +++ b/gcc/config/aarch64/aarch64.c > @@ -693,7 +693,7 @@ static const struct tune_params generic_tunings = > 4, /* memmov_cost */ > 2, /* issue_rate */ > (AARCH64_FUSE_AES_AESMC), /* fusible_ops */ > - "8", /* function_align. */ > + "16:12", /* function_align. */ > "4", /* jump_align. */ > "8", /* loop_align. */ > 2, /* int_reassoc_width. */ >
