src/hotspot/cpu/aarch64/c1_Defs_aarch64.hpp

rev 60623 : 8248500: AArch64: Remove the r18 dependency on Windows AArch64
Reviewed-by:
Contributed-by: mbeckwit, luhenry, burban

*** 42,70 ****
  // registers
  enum {
    pd_nof_cpu_regs_frame_map = RegisterImpl::number_of_registers,       // number of registers used during code emission
    pd_nof_fpu_regs_frame_map = FloatRegisterImpl::number_of_registers,  // number of registers used during code emission
  
!   pd_nof_caller_save_cpu_regs_frame_map = 19 - 2,  // number of registers killed by calls
    pd_nof_caller_save_fpu_regs_frame_map = 32,  // number of registers killed by calls
  
!   pd_first_callee_saved_reg = 19 - 2,
!   pd_last_callee_saved_reg = 26 - 2,
  
!   pd_last_allocatable_cpu_reg = 16,
  
    pd_nof_cpu_regs_reg_alloc
      = pd_last_allocatable_cpu_reg + 1,  // number of registers that are visible to register allocator
    pd_nof_fpu_regs_reg_alloc = 8,  // number of registers that are visible to register allocator
  
    pd_nof_cpu_regs_linearscan = 32, // number of registers visible to linear scan
    pd_nof_fpu_regs_linearscan = pd_nof_fpu_regs_frame_map, // number of registers visible to linear scan
    pd_nof_xmm_regs_linearscan = 0, // like sparc we don't have any of these
    pd_first_cpu_reg = 0,
!   pd_last_cpu_reg = 16,
    pd_first_byte_reg = 0,
!   pd_last_byte_reg = 16,
    pd_first_fpu_reg = pd_nof_cpu_regs_frame_map,
    pd_last_fpu_reg =  pd_first_fpu_reg + 31,
  
    pd_first_callee_saved_fpu_reg = 8 + pd_first_fpu_reg,
    pd_last_callee_saved_fpu_reg = 15 + pd_first_fpu_reg,
--- 42,70 ----
  // registers
  enum {
    pd_nof_cpu_regs_frame_map = RegisterImpl::number_of_registers,       // number of registers used during code emission
    pd_nof_fpu_regs_frame_map = FloatRegisterImpl::number_of_registers,  // number of registers used during code emission
  
!   pd_nof_caller_save_cpu_regs_frame_map = 19 - 2 /* rscratch1 and rscratch2 */ WIN64_ONLY(- 1 /* r18 */),  // number of registers killed by calls
    pd_nof_caller_save_fpu_regs_frame_map = 32,  // number of registers killed by calls
  
!   pd_first_callee_saved_reg = 19 - 2 /* rscratch1 and rscratch2 */ WIN64_ONLY(- 1 /* r18 */),
!   pd_last_callee_saved_reg = 26 - 2 /* rscratch1 and rscratch2 */ WIN64_ONLY(- 1 /* r18 */),
  
!   pd_last_allocatable_cpu_reg = 16 WIN64_ONLY(- 1 /* r18 */),
  
    pd_nof_cpu_regs_reg_alloc
      = pd_last_allocatable_cpu_reg + 1,  // number of registers that are visible to register allocator
    pd_nof_fpu_regs_reg_alloc = 8,  // number of registers that are visible to register allocator
  
    pd_nof_cpu_regs_linearscan = 32, // number of registers visible to linear scan
    pd_nof_fpu_regs_linearscan = pd_nof_fpu_regs_frame_map, // number of registers visible to linear scan
    pd_nof_xmm_regs_linearscan = 0, // like sparc we don't have any of these
    pd_first_cpu_reg = 0,
!   pd_last_cpu_reg = 16 WIN64_ONLY(- 1 /* r18 */),
    pd_first_byte_reg = 0,
!   pd_last_byte_reg = 16 WIN64_ONLY(- 1 /* r18 */),
    pd_first_fpu_reg = pd_nof_cpu_regs_frame_map,
    pd_last_fpu_reg =  pd_first_fpu_reg + 31,
  
    pd_first_callee_saved_fpu_reg = 8 + pd_first_fpu_reg,
    pd_last_callee_saved_fpu_reg = 15 + pd_first_fpu_reg,