src/hotspot/cpu/s390/s390.ad

rev 49922 : 8202425: [s390] C2: Wrong unsigned comparison with 0
Summary: Remove wrong node compU_reg_imm0. Other node is already available.
Reviewed-by:

*** 8399,8418 ****
    opcode(CLFI_ZOPC);
    ins_encode(z_rilform_unsigned(op1, op2));
    ins_pipe(pipe_class_dummy);
  %}
  
- instruct compU_reg_imm0(flagsReg cr, iRegI op1, immI_0 zero) %{
-   match(Set cr (CmpU op1 zero));
-   ins_cost(DEFAULT_COST_LOW);
-   size(2);
-   format %{ "LTR     $op1,$op1\t # unsigned" %}
-   opcode(LTR_ZOPC);
-   ins_encode(z_rrform(op1, op1));
-   ins_pipe(pipe_class_dummy);
- %}
- 
  instruct compU_reg_mem(flagsReg cr, iRegI op1, memory op2)%{
    match(Set cr (CmpU op1 (LoadI op2)));
    ins_cost(MEMORY_REF_COST);
    // TODO: s390 port size(VARIABLE_SIZE);
    format %{ "CL(Y)   $op1, $op2\t # unsigned" %}
--- 8399,8408 ----