https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126959
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2026-08-20
CC| |rguenth at gcc dot gnu.org
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
This
diff --git a/gcc/config/i386/x86-tune-costs.h
b/gcc/config/i386/x86-tune-costs.h
index bc3bb694349..7574cc4f1ad 100644
--- a/gcc/config/i386/x86-tune-costs.h
+++ b/gcc/config/i386/x86-tune-costs.h
@@ -2119,7 +2119,7 @@ struct processor_costs znver4_cost = {
8, 8, /* mask->integer and integer->mask moves */
{6, 6, 6}, /* cost of loading mask register
in QImode, HImode, SImode. */
- {8, 8, 8}, /* cost if storing mask register
+ {6, 6, 6}, /* cost if storing mask register
in QImode, HImode, SImode. */
2, /* cost of moving mask register. */
/* End of register allocator costs. */
fixes the issue. Richard, can you check if it is OK on znver4?
