hg: jdk/jdk: 8237894: CTW: C1 compilation fails with assert(x->type()->tag() == f->type()->tag()) failed: should have same type

[jamsheed.c.m at oracle.com]

Changeset: 7e5a53043493
Author:    jcm
Date:      2020-03-20 05:19 -0700
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/7e5a53043493

8237894: CTW: C1 compilation fails with assert(x->type()->tag() == f->type()->tag()) failed: should have same type
Summary: field access instructions hash decalred_type in addition, indexed access instructions hash value type of the instruction in addition.
Reviewed-by: thartmann, shade

! src/hotspot/share/c1/c1_GraphBuilder.cpp
! src/hotspot/share/c1/c1_Instruction.hpp
+ test/hotspot/jtreg/compiler/c1/TestValueNumberingNullObject.java