gcc/gcc/lra-constraints.c

36      o reuse of input reload pseudos to simplify reload pseudo
127 #include "input.h"
564 /* The page contains code to reuse input reloads.  */
566 /* Structure describes input reload of the current insns.  */
570   rtx input;
577 /* Array containing info about input reloads.  It is used to find the
578    same input reload and reuse the reload pseudo in this case.	*/
581 /* Initiate data concerning reuse of input reloads for the current
590    created input reload pseudo (only if TYPE is not OP_OUT).  Don't
594    reused the already created input reload pseudo.  Use TITLE to
614       if (rtx_equal_p (curr_insn_input_reloads[i].input, original)
619 	  /* If input is equal to original and both are VOIDmode,
646   curr_insn_input_reloads[curr_insn_input_reloads_num].input = original;
708    It is supposed that X is the output operand and Y is the input
749      ordinary indexing if the pre-increment is the input operand.  */
870 /* Generate reloads for matching OUT and INS (array of input operand
871    numbers with end marker -1) with reg class GOAL_CLASS.  Add input
873    OUT might be negative.  In this case we generate input reloads for
874    matched input operands INS.  */
900 	  /* If the input reg is dying here, we can use the same hard
947 	 input pseudo, the new pseudo will no conflict with the input
948 	 pseudo which is wrong when the input pseudo lives after the
954 	 force the second input operand ("b") to match the output
982   /* See a comment for the input operand above.  */
1259 /* True if the current insn should have no correspondingly input or
1268    register of class CL.  Add any input reloads to list BEFORE.  AFTER
2271 		  /* Output operands and matched input operands are
2327 		       "            alt=%d: No input/otput reload -- refuse\n",
2458 		       "            %d Non input pseudo reload: reject++\n",
3249 	 RESULT may not be available after the insn in an input
3358      not allowed to have any input reloads.  */
3639 	/* We allow matching one output operand and several input
3883 	  /* generate reloads for input and matched outputs.  */