hg: jdk/submit: 8240905: assert(mem == (Node*)1 || mem == mem2) failed: multiple Memories being matched at once?

[tobias.hartmann at oracle.com]

Changeset: 23dab0354eb0
Author:    thartmann
Date:      2020-03-24 17:39 +0100
URL:       https://hg.openjdk.java.net/jdk/submit/rev/23dab0354eb0

8240905: assert(mem == (Node*)1 || mem == mem2) failed: multiple Memories being matched at once?
Summary: Stop recursion if there are multiple loads with different memory inputs in the tree.
Reviewed-by: kvn, vlivanov

! src/hotspot/share/opto/matcher.cpp
! src/hotspot/share/opto/matcher.hpp
+ test/hotspot/jtreg/compiler/codegen/TestMultiMemInstructionMatching.java