hg: jdk/submit: 8247307: C2: Loop array fill stub routines are not called

[pengfei.li at arm.com]

Changeset: c796401faefa
Author:    pli
Date:      2020-06-28 02:39 +0000
URL:       https://hg.openjdk.java.net/jdk/submit/rev/c796401faefa

8247307: C2: Loop array fill stub routines are not called
Summary: Ignore safepoint polling use of CountedLoopNode when matching loop array fill pattern.
Reviewed-by: kvn, thartmann

! src/hotspot/cpu/x86/vm_version_x86.cpp
! src/hotspot/share/opto/loopTransform.cpp
+ test/micro/org/openjdk/bench/vm/compiler/ArrayFill.java