hg: jdk/sandbox: 8251525: AARCH64: Faster Math.signum(fp)

[chris.hegarty at oracle.com]

Changeset: e70cbaf159f5
Author:    dchuyko
Date:      2020-09-03 14:54 +0300
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/e70cbaf159f5

8251525: AARCH64: Faster Math.signum(fp)
Reviewed-by: aph, vlivanov, adinn

! src/hotspot/cpu/aarch64/aarch64.ad
! src/hotspot/cpu/aarch64/assembler_aarch64.hpp
! src/hotspot/cpu/aarch64/vm_version_aarch64.cpp
! src/hotspot/share/classfile/vmSymbols.cpp
! src/hotspot/share/classfile/vmSymbols.hpp
! src/hotspot/share/opto/c2compiler.cpp
! src/hotspot/share/opto/classes.hpp
! src/hotspot/share/opto/intrinsicnode.cpp
! src/hotspot/share/opto/intrinsicnode.hpp
! src/hotspot/share/opto/library_call.cpp
! src/hotspot/share/opto/matcher.cpp
! src/hotspot/share/runtime/globals.hpp
! src/hotspot/share/runtime/vmStructs.cpp
! src/java.base/share/classes/java/lang/Math.java
+ test/hotspot/jtreg/compiler/intrinsics/math/TestSignumIntrinsic.java