git: openjdk/jdk: 8265325: Optimize StubRoutines::dpow() for Math.pow(x, 0.5)

[Jie Fu]

Changeset: b64a3fb9
Author:    Jie Fu <jiefu at openjdk.org>
Date:      2021-04-19 10:45:20 +0000
URL:       https://git.openjdk.java.net/jdk/commit/b64a3fb9

8265325: Optimize StubRoutines::dpow() for Math.pow(x, 0.5)

Reviewed-by: kvn, neliasso

! src/hotspot/cpu/x86/macroAssembler_x86_pow.cpp
+ test/hotspot/jtreg/compiler/intrinsics/math/TestPow0Dot5Opt.java
! test/micro/org/openjdk/bench/java/lang/MathBench.java