hg: jdk9/hs-comp/hotspot: 8141044: C1 should fold (this == null) to false

[aleksey.shipilev at oracle.com]

Changeset: 6f3baccef211
Author:    shade
Date:      2015-11-05 13:33 +0300
URL:       http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/6f3baccef211

8141044: C1 should fold (this == null) to false
Reviewed-by: jrose, roland

! src/share/vm/c1/c1_Canonicalizer.cpp
! src/share/vm/c1/c1_GraphBuilder.cpp
! src/share/vm/c1/c1_Instruction.hpp