src/cpu/aarch64/vm/aarch64.ad

rev 9971 : 8148240: aarch64: random infrequent null pointer exceptions in javac
Summary: Disable fp as an allocatable register
Reviewed-by: aph

*** 575,585 ****
      R24,
      R25,
      R26
   /* R27, */                     // heapbase
   /* R28, */                     // thread
!     R29,                        // fp
   /* R30, */                     // lr
   /* R31 */                      // sp
  );
  
  reg_class_dynamic no_special_reg32(no_special_reg32_no_fp, no_special_reg32_with_fp, %{ PreserveFramePointer %});
--- 575,585 ----
      R24,
      R25,
      R26
   /* R27, */                     // heapbase
   /* R28, */                     // thread
!  /* R29, */                     // fp
   /* R30, */                     // lr
   /* R31 */                      // sp
  );
  
  reg_class_dynamic no_special_reg32(no_special_reg32_no_fp, no_special_reg32_with_fp, %{ PreserveFramePointer %});
*** 644,654 ****
      R24, R24_H,
      R25, R25_H,
      R26, R26_H,
   /* R27, R27_H, */              // heapbase
   /* R28, R28_H, */              // thread
!     R29, R29_H,                 // fp
   /* R30, R30_H, */              // lr
   /* R31, R31_H */               // sp
  );
  
  reg_class_dynamic no_special_reg(no_special_reg_no_fp, no_special_reg_with_fp, %{ PreserveFramePointer %});
--- 644,654 ----
      R24, R24_H,
      R25, R25_H,
      R26, R26_H,
   /* R27, R27_H, */              // heapbase
   /* R28, R28_H, */              // thread
!  /* R29, R29_H, */              // fp
   /* R30, R30_H, */              // lr
   /* R31, R31_H */               // sp
  );
  
  reg_class_dynamic no_special_reg(no_special_reg_no_fp, no_special_reg_with_fp, %{ PreserveFramePointer %});