git: openjdk/jdk: jdk26: 8365570: C2 fails assert(false) failed: Unexpected node in SuperWord truncation: CastII

[Tobias Hartmann]

Changeset: 10d97c5e
Branch: jdk26
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2026-01-09 10:38:55 +0000
URL:       https://git.openjdk.org/jdk/commit/10d97c5e6e701d8db8cf2140d8893dafbc51c2c7

8365570: C2 fails assert(false) failed: Unexpected node in SuperWord truncation: CastII

Reviewed-by: bmaillard, epeter
Backport-of: 775f48de6129092d05650fec17dad171944e6d89

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