[SystemZ] Start adding z196 and zEC12 support

This first step just adds definitions for SLLK, SRLK and SRAK.
The next patch will actually make use of them during codegen.

insn-bad.s tests that some form of error is reported when using these
instructions on z10.  More work is needed to get the "instruction requires:
distinct-ops" that we'd ideally like, so I've stubbed that part out for now.
I'll come back and make it mandatory once the necessary changes are in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186680 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/SystemZ/SystemZSubtarget.cpp

@@ -9,6 +9,7 @@
 
 #include "SystemZSubtarget.h"
 #include "llvm/IR/GlobalValue.h"
+#include "MCTargetDesc/SystemZMCTargetDesc.h"
 
 #define GET_SUBTARGETINFO_TARGET_DESC
 #define GET_SUBTARGETINFO_CTOR
@@ -19,7 +20,8 @@ using namespace llvm;
 SystemZSubtarget::SystemZSubtarget(const std::string &TT,
                                    const std::string &CPU,
                                    const std::string &FS)
-  : SystemZGenSubtargetInfo(TT, CPU, FS), TargetTriple(TT) {
+  : SystemZGenSubtargetInfo(TT, CPU, FS), HasDistinctOps(false),
+    TargetTriple(TT) {
   std::string CPUName = CPU;
   if (CPUName.empty())
     CPUName = "z10";