8192818: [s390]: restoring register contents calculates wrong value

Reviewed-by: goetz, mdoerr
2017-12-01 17:09:43 +01:00 · 2017-12-01 17:09:43 +01:00 · d8284abf49
commit d8284abf49
parent 8fd0feffb9
1 changed files with 1 additions and 0 deletions
--- a/src/hotspot/cpu/s390/macroAssembler_s390.cpp
+++ b/src/hotspot/cpu/s390/macroAssembler_s390.cpp
@ -5041,6 +5041,7 @@ unsigned int MacroAssembler::string_compress(Register result, Register src, Regi
    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.