contrib/gcc/caller-save.c

50 /* Modes for each hard register that we can save.  The smallest mode is wide
65    saved in its widest mode with a simple SET insn as long as the memory
104    Ensure that we can find a mode to save the register and that there is a
116   enum machine_mode mode;
122      the modes that they can have.  If we can't find a mode to use,
153      that register in every mode we will use to save registers.  */
197     for (mode = 0 ; mode < MAX_MACHINE_MODE; mode++)
198       if (HARD_REGNO_MODE_OK (i, mode))
205 	  PUT_MODE (test_reg, mode);
206 	  PUT_MODE (test_mem, mode);
212 	  reg_save_code[i][mode] = recog_memoized (saveinsn);
213 	  reg_restore_code[i][mode] = recog_memoized (restinsn);
217 	  ok = (reg_save_code[i][mode] != -1
218 		&& reg_restore_code[i][mode] != -1);
229 	      reg_save_code[i][mode] = -1;
230 	      reg_restore_code[i][mode] = -1;
235 	  reg_save_code[i][mode] = -1;
236 	  reg_restore_code[i][mode] = -1;
275      falling back to the smallest mode immediately.  (eg TF -> DF -> SF).
317 	/* If no mode exists for this size, try another.  Also break out
341 	/* We have found an acceptable mode to store in.  */
423 	      /* Save hard registers always in the widest mode available.  */
431 		 and choose proper mode for saving.  */
437 		  enum machine_mode mode;
441 		  mode = HARD_REGNO_CALLER_SAVE_MODE
443 		  if (GET_MODE_BITSIZE (mode)
445 		    save_mode[r] = mode;
505   enum machine_mode mode = GET_MODE (reg);
521   endregno = regno + hard_regno_nregs[regno][mode];
535   enum machine_mode mode = GET_MODE (reg);
554   endregno = regno + hard_regno_nregs[regno][mode];
651   /* A common failure mode if register status is not correct in the
724   /* A common failure mode if register status is not correct in the