hg: valhalla/valhalla: 8198748: [lworld] Javac should insert null checks at casts to value types.

[srikanth.adayapalam at oracle.com]

Changeset: 7c1c51c340e6
Author:    sadayapalam
Date:      2018-03-12 11:46 +0530
URL:       http://hg.openjdk.java.net/valhalla/valhalla/rev/7c1c51c340e6

8198748: [lworld] Javac should insert null checks at casts to value types.

! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Lower.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassReader.java
+ test/langtools/tools/javac/valhalla/lworld-values/CastNoNullCheckTest.java
+ test/langtools/tools/javac/valhalla/lworld-values/CastNullCheckTest.java