Summary: Backed out changeset 678f11cc769e
Reviewed-by: coffeys

Reviewed-by: jeff

Reviewed-by: thartmann, simonis, mbaesken

Summary: Added required explicit NULL checks
Reviewed-by: thartmann, kvn

Reviewed-by: dholmes, zgu

Summary: Change class version to version accepted by JDK 8.
Reviewed-by: dholmes, hseigel

Summary: Fixed missing null checks on the result of CodeCache::find_blob() found by Parfait.
Reviewed-by: shade, kvn

Summary: Fixed a missing null check on the return value of AddPNode::Ideal_base_and_offset() found by Parfait.
Reviewed-by: kvn

Summary: Fixed a missing null check on n->in(0) found by Parfait.
Reviewed-by: kvn

Summary: Fixed a missing null check on the return value of MachNodeGenerator() found by Parfait.
Reviewed-by: kvn

Summary: Fixed a missing null check on the return value of InitializeNode::allocation() found by Parfait.
Reviewed-by: zmajo

Summary: We need to check ConstMethod::method() for NULL before dereferencing.
Reviewed-by: kvn, iignatyev

Reviewed-by: kbarrett, stefank

Reviewed-by: dholmes, ehelin

8171194: Exception "Duplicate field name&signature in class file" should report the name and signature of the field
Summary: Added code to emit name and signature of duplicate field in java.lang.ClassFormatError exception message
Reviewed-by: dholmes, coleenp

8173373: C1: NPE is thrown instead of LinkageError when accessing inaccessible field on NULL receiver
Summary: Deoptimize if receiver null check of unresolved field access fails to throw NoClassDefFoundError instead of NPE.
Reviewed-by: vlivanov