git: openjdk/jdk: 8266388: C2: Improve constant ShiftCntV on x86

[Vladimir Ivanov]

Changeset: b42d4969
Author:    Vladimir Ivanov <vlivanov at openjdk.org>
Date:      2021-05-03 09:46:49 +0000
URL:       https://git.openjdk.java.net/jdk/commit/b42d4969b1753e717a66218fd465243dfeccd455

8266388: C2: Improve constant ShiftCntV on x86

Reviewed-by: kvn

! src/hotspot/cpu/x86/x86.ad
! src/hotspot/share/opto/matcher.cpp
! src/hotspot/share/opto/matcher.hpp