S390: Decouple Add/Sub/Neg to 32/64 Bit Op

src/s390/assembler-s390.h

Index: src/s390/assembler-s390.h
diff --git a/src/s390/assembler-s390.h b/src/s390/assembler-s390.h
index 114304ca697a6eaeb938d9ec0983ec479bc135aa..6d17b0ad94f3fef5ffe78c7a00df74e09936339a 100644
--- a/src/s390/assembler-s390.h
+++ b/src/s390/assembler-s390.h
@@ -875,6 +875,12 @@ class Assembler : public AssemblerBase {
   void lmy(Register r1, Register r2, const MemOperand& src);
   void lmg(Register r1, Register r2, const MemOperand& src);
 
+  // Load On Condition Instructions
+  void locr(Condition m3, Register r1, Register r2);
+  void locgr(Condition m3, Register r1, Register r2);
+  void loc(Condition m3, Register r1, const MemOperand& src);
+  void locg(Condition m3, Register r1, const MemOperand& src);
+
   // Store Instructions
   void st(Register r, const MemOperand& src);
   void stc(Register r, const MemOperand& src);
@@ -1416,6 +1422,8 @@ class Assembler : public AssemblerBase {
 
   inline void rxy_form(Opcode op, Register r1, Register x2, Register b2,
                        Disp d2);
+  inline void rxy_form(Opcode op, Register r1, Condition m3, Register b2,
+                       Disp d2);
   inline void rxy_form(Opcode op, DoubleRegister r1, Register x2, Register b2,
                        Disp d2);