git: openjdk/jdk17u-dev: 8270947: AArch64: C1: use zero_words to initialize all objects

[Goetz Lindenmaier]

Changeset: 974ff6b9
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2022-10-18 13:27:18 +0000
URL:       https://git.openjdk.org/jdk17u-dev/commit/974ff6b9f51db455632467a4581ca551aab70d48

8270947: AArch64: C1: use zero_words to initialize all objects

Backport-of: 6c68ce2d396c6fe02201daf2bdb8c164de807cc1

! src/hotspot/cpu/aarch64/aarch64.ad
! src/hotspot/cpu/aarch64/c1_LIRGenerator_aarch64.cpp
! src/hotspot/cpu/aarch64/c1_MacroAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/c1_MacroAssembler_aarch64.hpp
! src/hotspot/cpu/aarch64/c1_Runtime1_aarch64.cpp
! src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/macroAssembler_aarch64.hpp
+ test/micro/org/openjdk/bench/vm/gc/RawAllocationRate.java