hg: jdk/sandbox: 8230062: assert(i == p->size()-1) failed: must be last element of the pack

[chris.hegarty at oracle.com]

Changeset: 0df9370fee29
Author:    chagedorn
Date:      2019-09-30 09:29 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/0df9370fee29

8230062: assert(i == p->size()-1) failed: must be last element of the pack
Summary: Avoids vectorization of reduction chain in which an intermediate result is used.
Reviewed-by: roland, thartmann

! src/hotspot/share/opto/superword.cpp