[release-branch.go1.25] runtime/race: set missing argument frame for ppc64x atomic And/Or wrappers
The ppc64x TSAN wrappers for atomic And/Or did not initialize R6 with the Go argument frame before calling racecallatomic. Since racecallatomic expects R6 to point to the argument list and dereferences it unconditionally, this led to a nil-pointer dereference under -race.
Other atomic TSAN wrappers (Load/Store/Add/Swap/CAS) already set up R6 in the expected way. This change aligns the And/Or wrappers with the rest by adding the missing R6 initialisation.
This keeps the behavior consistent across all atomic operations on ppc64x.
Updates #76776.
Change-Id: Iaf578449a6171a0c6f7c33ec6f64c1251297ae6d
Reviewed-on: https://go-review.googlesource.com/c/go/+/718560
Reviewed-by: Mark Freeman <markfreeman@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Paul Murphy <paumurph@redhat.com>
(cherry picked from commit
44cb82449e7f24530fe0fe0bf8261ba9e0e4e7d8)
Reviewed-on: https://go-review.googlesource.com/c/go/+/728900
Reviewed-by: David Chase <drchase@google.com>