git: openjdk/jdk: 8271883: Math CopySign optimization for x86

[Sandhya Viswanathan]

Changeset: 87d2761f
Author:    Marcus G K Williams <mgkwill at openjdk.org>
Committer: Sandhya Viswanathan <sviswanathan at openjdk.org>
Date:      2021-08-14 00:34:51 +0000
URL:       https://git.openjdk.java.net/jdk/commit/87d2761f1b4572633de020b2d4681918c6f10f06

8271883: Math CopySign optimization for x86

Reviewed-by: jbhateja, sviswanathan, kvn

! src/hotspot/cpu/x86/vm_version_x86.cpp
! src/hotspot/cpu/x86/x86.ad
! test/micro/org/openjdk/bench/vm/compiler/Signum.java