src/hotspot/cpu/aarch64/vtableStubs_aarch64.cpp

rev 48518 : 8196136: AArch64: Correct register use in patch for JDK-8195685
Summary: itable stubs must not use java argument registers as scratch registers
Reviewed-by: duke

*** 143,155 ****
    // Entry arguments:
    //  rscratch2: CompiledICHolder
    //  j_rarg0: Receiver
  
  
!   // Most registers are in use; we'll use r0, rmethod, r10, r11
    const Register recv_klass_reg     = r10;
!   const Register holder_klass_reg   = r0; // declaring interface klass (DECC)
    const Register resolved_klass_reg = rmethod; // resolved interface klass (REFC)
    const Register temp_reg           = r11;
    const Register icholder_reg       = rscratch2;
  
    Label L_no_such_interface;
--- 143,155 ----
    // Entry arguments:
    //  rscratch2: CompiledICHolder
    //  j_rarg0: Receiver
  
  
!   // Most registers are in use; we'll use r19, rmethod, r10, r11
    const Register recv_klass_reg     = r10;
!   const Register holder_klass_reg   = r19; // declaring interface klass (DECC)
    const Register resolved_klass_reg = rmethod; // resolved interface klass (REFC)
    const Register temp_reg           = r11;
    const Register icholder_reg       = rscratch2;
  
    Label L_no_such_interface;