Clean up testing of instructions. Allow testing to quit if test pattern tests

src/trusted/validator_arm/baseline_classes.cc

Index: src/trusted/validator_arm/baseline_classes.cc
===================================================================
--- src/trusted/validator_arm/baseline_classes.cc	(revision 8506)
+++ src/trusted/validator_arm/baseline_classes.cc	(working copy)
@@ -131,6 +131,13 @@
   return d.reg(i) + flags.reg_if_updated(i);
 }
 
+// Binary3RegisterImmedShiftedOpRnNotSp
+SafetyLevel Binary3RegisterImmedShiftedOpRnNotSp::
+safety(const Instruction i) const {
+  if (n.reg(i) == kRegisterStack) return DEPRECATED;
+  return Binary3RegisterImmedShiftedOp::safety(i);
+}
+
 // Binary4RegisterShiftedOp
 SafetyLevel Binary4RegisterShiftedOp::safety(Instruction i) const {
   // Unsafe if any register contains PC (ARM restriction).