[SystemZ] Add decimal floating-point instructions

This adds assembler / disassembler support for the decimal
floating-point instructions.  Since LLVM does not yet have
support for decimal float types, these cannot be used for
codegen at this point.

llvm-svn: 304203
diff --git a/llvm/lib/Target/SystemZ/SystemZSubtarget.cpp b/llvm/lib/Target/SystemZ/SystemZSubtarget.cpp
index 022679a..0ab0c2f 100644
--- a/llvm/lib/Target/SystemZ/SystemZSubtarget.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZSubtarget.cpp
@@ -42,8 +42,10 @@
       HasMiscellaneousExtensions(false),
       HasExecutionHint(false), HasLoadAndTrap(false),
       HasTransactionalExecution(false), HasProcessorAssist(false),
+      HasDFPZonedConversion(false),
       HasVector(false), HasLoadStoreOnCond2(false),
       HasLoadAndZeroRightmostByte(false), HasMessageSecurityAssist5(false),
+      HasDFPPackedConversion(false),
       TargetTriple(TT), InstrInfo(initializeSubtargetDependencies(CPU, FS)),
       TLInfo(TM, *this), TSInfo(), FrameLowering() {}