contrib/gcc/global.c

151    sorted in the order of first-to-be-allocated first.  */
605 	       first try allocating in the class that is cheapest
1004 	 we want to give the lower-priority allocno the first chance for
1038    The registers marked in PREFREGS are tried first.
1087      In the first pass, skip registers that are preferred by some other pseudo
1090      However, we never allocate a register for the first time in pass 0.  */
1266       /* Count from the end, to find the least-used ones first.  */
1398 	 first try allocating in the class that is cheapest
1437        record conflicts first with hard regs,
1661    that SRC is a register.  If SRC or the first operand of SRC is a register,
1855 build_insn_chain (rtx first)
1863   for (; first; first = NEXT_INSN (first))
1867       if (first == BB_HEAD (b))
1883       if (!NOTE_P (first) && !BARRIER_P (first))
1890 	  c->insn = first;
1893 	  if (INSN_P (first))
1899 	      for (link = REG_NOTES (first); link; link = XEXP (link, 1))
1909 	      note_stores (PATTERN (first), reg_becomes_live,
1915 	  if (INSN_P (first))
1921 	      for (link = REG_NOTES (first); link; link = XEXP (link, 1))
1929       if (first == BB_END (b))
1941 	  for (first = NEXT_INSN (first); first; first = NEXT_INSN (first))
1942 	    gcc_assert (!INSN_P (first)
1943 			|| GET_CODE (PATTERN (first)) == USE
1944 			|| ((GET_CODE (PATTERN (first)) == ADDR_VEC
1945 			     || GET_CODE (PATTERN (first)) == ADDR_DIFF_VEC)
1946 			    && prev_real_insn (first) != 0
1947 			    && JUMP_P (prev_real_insn (first))));
2049    The standard GCC live information means only the first condition.
2457 	 insn if the pseudo-register is used first time in given BB