src/hotspot/cpu/x86/gc/shenandoah/shenandoahBarrierSetAssembler_x86.cpp

rev 54706 : 8223244: Fix usage of ARRAYCOPY_DISJOINT decorator

*** 51,67 ****
    bool obj_int = type == T_OBJECT LP64_ONLY(&& UseCompressedOops);
    bool dest_uninitialized = (decorators & IS_DEST_UNINITIALIZED) != 0;
  
    if (type == T_OBJECT || type == T_ARRAY) {
  #ifdef _LP64
!     if (!checkcast && !obj_int) {
        // Save count for barrier
        __ movptr(r11, count);
!     } else if (disjoint && obj_int) {
        // Save dst in r11 in the disjoint case
        __ movq(r11, dst);
      }
  #else
      if (disjoint) {
        __ mov(rdx, dst);          // save 'to'
      }
  #endif
--- 51,69 ----
    bool obj_int = type == T_OBJECT LP64_ONLY(&& UseCompressedOops);
    bool dest_uninitialized = (decorators & IS_DEST_UNINITIALIZED) != 0;
  
    if (type == T_OBJECT || type == T_ARRAY) {
  #ifdef _LP64
!     if (!checkcast) {
!       if (!obj_int) {
          // Save count for barrier
          __ movptr(r11, count);
!       } else if (disjoint) {
          // Save dst in r11 in the disjoint case
          __ movq(r11, dst);
        }
+     }
  #else
      if (disjoint) {
        __ mov(rdx, dst);          // save 'to'
      }
  #endif
*** 121,137 ****
    bool obj_int = type == T_OBJECT LP64_ONLY(&& UseCompressedOops);
    Register tmp = rax;
  
    if (type == T_OBJECT || type == T_ARRAY) {
  #ifdef _LP64
!     if (!checkcast && !obj_int) {
        // Save count for barrier
        count = r11;
      } else if (disjoint && obj_int) {
        // Use the saved dst in the disjoint case
        dst = r11;
!     } else if (checkcast) {
        tmp = rscratch1;
      }
  #else
      if (disjoint) {
        __ mov(dst, rdx); // restore 'to'
--- 123,141 ----
    bool obj_int = type == T_OBJECT LP64_ONLY(&& UseCompressedOops);
    Register tmp = rax;
  
    if (type == T_OBJECT || type == T_ARRAY) {
  #ifdef _LP64
!     if (!checkcast) {
!       if (!obj_int) {
          // Save count for barrier
          count = r11;
        } else if (disjoint && obj_int) {
          // Use the saved dst in the disjoint case
          dst = r11;
!       }
!     } else {
        tmp = rscratch1;
      }
  #else
      if (disjoint) {
        __ mov(dst, rdx); // restore 'to'