src/hotspot/cpu/s390/macroAssembler_s390.cpp

*** 5039,5048 ****
--- 5039,5049 ----
        z_brct(Rix, VectorLoop);
  
      z_bru(VectorDone);
  
      bind(VectorBreak);
+       add2reg(Rsrc, -min_vcnt*2);          // Fix Rsrc. Rsrc was already updated, but Rdst and Rix are not.
        z_sll(Rix, log_min_vcnt);            // # chars processed so far in VectorLoop, excl. current iteration.
        z_sr(Z_R0, Rix);                     // correct # chars processed in total.
  
      bind(VectorDone);
    }