contrib/gcc/regmove.c

18 along with GCC; see the file COPYING.  If not, write to the Free
66   int with[MAX_RECOG_OPERANDS];
85 /* Return nonzero if registers with CLASS1 and CLASS2 can be merged without
216 /* Used to communicate with flags_set_1.  */
330    a destination register with.  The higher the returned value, the better
394    with DEST and let SRC die in INSN.
409   /* We don't want to mess with hard regs if register classes are small.  */
471 		     overlapping registers with validate_replace_rtx,
588    SRC to DEST in which DEST dies, with no prior modification of DEST.
592    In that case, we can replace all uses of DEST, starting with INSN and
593    ending with the set of SRC to DEST, with SRC.  We do not do this
921    another add immediate instruction with the same source and dest registers,
1088   /* A forward/backward pass.  Replace output operands with input operands.  */
1150 	     If it dies there, then replace the dest in both operands with
1158 	      match_no = match.with[op_no];
1238   /* A backward pass.  Replace input operands with output operands.  */
1256 	     operand.  If safe, then replace the source operand with the
1269 	      match_no = match.with[op_no];
1342 		     reload anyway.  On patterns with multiple alternatives,
1396 		 replace it in both instructions with match_no.  */
1555     matchp->with[op_no] = matchp->commutative[op_no] = -1;
1604 		matchp->with[op_no] = match;
1607 		  matchp->with[matchp->commutative[op_no]] = match;
1625 /* Try to replace all occurrences of DST_REG with SRC in LOC, that is
1660 /* Try to replace output operand DST in SET, with input operand SRC.  SET is
1718      then replace it in both instructions with
2099    This is intended primarily for use with targets that do not define
2304 	 We can't just compare with STACK_POINTER_RTX because the
2395 	      /* Otherwise we have a deallocation.  Do not combine with
2541      even for machines with possibly nonzero RETURN_POPS_ARGS