git: openjdk/jdk13u-dev: 8261022: Fix incorrect result of Math.abs() with char type

[Ekaterina Vergizova]

Changeset: ff29b0b8
Author:    Ekaterina Vergizova <evergizova at openjdk.org>
Date:      2021-03-18 11:13:48 +0000
URL:       https://git.openjdk.java.net/jdk13u-dev/commit/ff29b0b8

8261022: Fix incorrect result of Math.abs() with char type

Reviewed-by: yan
Backport-of: 7a2db858e0e81f2ba17c3554386bb6a833318b3d

! src/hotspot/share/opto/superword.cpp
+ test/hotspot/jtreg/compiler/vectorization/TestAbsCharVector.java