src/share/vm/adlc/formssel.cpp

rev 12113 : 8166561: [s390] Adaptions needed for s390 port in C1 and C2.

*** 720,729 ****
--- 720,734 ----
          // unique def, no uses
        } else {
          // // unique def, some uses
          // // must return bottom unless all uses match def
          // unique = NULL;
+ #ifdef S390
+         // This case is important for move instructions on s390x.
+         // On other platforms (e.g. x86), all uses always match the def.
+         unique = NULL;
+ #endif
        }
      } else if( DEF_of_memory > 0 ) {
        // multiple defs, don't care about uses
        unique = NULL;
      } else if( USE_of_memory == 1) {