src/cpu/ppc/vm/macroAssembler_ppc.hpp

rev 7616 : 8068503: ppc64: Encode/Decode nodes for disjoint cOops mode

*** 565,584 ****
  
    // Check accessed object for null. Use SIGTRAP-based null checks on AIX.
    inline void load_with_trap_null_check(Register d, int si16, Register s1);
  
    // Load heap oop and decompress. Loaded oop may not be null.
!   inline void load_heap_oop_not_null(Register d, RegisterOrConstant offs, Register s1 = noreg);
    inline void store_heap_oop_not_null(Register d, RegisterOrConstant offs, Register s1,
!                                       /*specify if d must stay uncompressed*/ Register tmp = noreg);
  
    // Null allowed.
    inline void load_heap_oop(Register d, RegisterOrConstant offs, Register s1 = noreg);
  
    // Encode/decode heap oop. Oop may not be null, else en/decoding goes wrong.
    inline Register encode_heap_oop_not_null(Register d, Register src = noreg);
!   inline void decode_heap_oop_not_null(Register d);
  
    // Null allowed.
    inline void decode_heap_oop(Register d);
  
    // Load/Store klass oop from klass field. Compress.
--- 565,589 ----
  
    // Check accessed object for null. Use SIGTRAP-based null checks on AIX.
    inline void load_with_trap_null_check(Register d, int si16, Register s1);
  
    // Load heap oop and decompress. Loaded oop may not be null.
!   // Specify tmp to save one cycle.
!   inline void load_heap_oop_not_null(Register d, RegisterOrConstant offs, Register s1 = noreg,
!                                      Register tmp = noreg);
!   // Store heap oop and decompress.  Decompressed oop may not be null.
!   // Specify tmp register if d should not be changed.
    inline void store_heap_oop_not_null(Register d, RegisterOrConstant offs, Register s1,
!                                       Register tmp = noreg);
  
    // Null allowed.
    inline void load_heap_oop(Register d, RegisterOrConstant offs, Register s1 = noreg);
  
    // Encode/decode heap oop. Oop may not be null, else en/decoding goes wrong.
+   // src == d allowed.
    inline Register encode_heap_oop_not_null(Register d, Register src = noreg);
!   inline Register decode_heap_oop_not_null(Register d, Register src = noreg);
  
    // Null allowed.
    inline void decode_heap_oop(Register d);
  
    // Load/Store klass oop from klass field. Compress.