contrib/gcc/regmove.c

65 struct match {
77 static int find_matches (rtx, struct match *);
258       rtx insn, end;
262       end = BB_END (block);
309 	  if (insn == end)
365 /* Return 1 if INSN might end a basic block.  */
373       /* These always end a basic block.  */
393    but don't scan past the end of a basic block.  If so, we can replace SRC
421       /* ??? We can't scan past the end of a basic block without updating
610       /* ??? We can't scan past the end of a basic block without updating
674     /* ??? We can't scan past the end of a basic block without updating
956       /* ??? We can't scan past the end of a basic block without updating
1065   struct match match;
1143 	  if (! find_matches (insn, &match))
1147 	     which is supposed to match the destination operand.
1158 	      match_no = match.with[op_no];
1160 	      /* Nothing to do if the two operands aren't supposed to match.  */
1187 		  if (match.commutative[op_no] < op_no)
1197 	      if (match.use[op_no] != READ
1198 		  || match.use[match_no] != WRITE)
1201 	      if (match.early_clobber[match_no]
1209 	      /* If the operands already match, then there is nothing to do.  */
1213 	      /* But in the commutative case, we might find a better match.  */
1214 	      if (match.commutative[op_no] >= 0)
1216 		  rtx comm = recog_data.operand[match.commutative[op_no]];
1250 	  if (! find_matches (insn, &match))
1254 	     which is supposed to match a source operand.
1269 	      match_no = match.with[op_no];
1271 	      /* Nothing to do if the two operands aren't supposed to match.  */
1287 	      /* If the operands already match, then there is nothing to do.  */
1291 	      if (match.commutative[op_no] >= 0)
1293 		  rtx comm = recog_data.operand[match.commutative[op_no]];
1312 	      if (match.use[op_no] != READ
1313 		  || match.use[match_no] != WRITE)
1316 	      if (match.early_clobber[match_no]
1402 		  /* ??? We can't scan past the end of a basic block without
1514       rtx end = BB_END (bb);
1515       rtx new = end;
1541 find_matches (rtx insn, struct match *matchp)
1596 		char *end;
1597 		unsigned long match_ul = strtoul (p, &end, 10);
1598 		int match = match_ul;
1600 		p = end;
1602 		if (match < op_no && likely_spilled[match])
1604 		matchp->with[op_no] = match;
1607 		  matchp->with[matchp->commutative[op_no]] = match;
1727       /* ??? We can't scan past the end of a basic block without updating
1766 		  /* ??? We can't scan past the end of a basic block without
1929 	      /* ??? We can't scan past the end of a basic block without
1989 	  /* ??? We can't scan past the end of a basic block without updating