contrib/gcc/reg-stack.c

927 swap_to_top (rtx insn, stack regstack, rtx src1, rtx src2)
948   regno = get_hard_regnum (&temp_stack, src2);
1251   rtx *src1, *src2;
1255   src2 = get_true_reg (&XEXP (pat_src, 1));
1260        || (STACK_REG_P (*src2)
1261 	   && get_hard_regnum (regstack, *src2) == FIRST_STACK_REG))
1270       src2 = get_true_reg (&XEXP (pat_src, 1));
1279   if (STACK_REG_P (*src2))
1280     src2_note = find_regno_note (insn, REG_DEAD, REGNO (*src2));
1288   if (STACK_REG_P (*src2))
1289     replace_reg (src2, get_hard_regnum (regstack, *src2));
1302       && ! (STACK_REG_P (*src1) && STACK_REG_P (*src2)
1303 	    && REGNO (*src1) == REGNO (*src2)))
1305       /* As a special case, two regs may die in this insn if src2 is
1420 	rtx *src1 = (rtx *) 0, *src2;
1506 	    src2 = get_true_reg (&XEXP (pat_src, 1));
1514 	    if (STACK_REG_P (*src2))
1515 	      src2_note = find_regno_note (insn, REG_DEAD, REGNO (*src2));
1522 	    if (! STACK_REG_P (*src1) || ! STACK_REG_P (*src2))
1533 		src2_hard_regnum = get_hard_regnum (regstack, *src2);
1544 	    if (STACK_REG_P (*src2))
1545 	      replace_reg (src2, get_hard_regnum (regstack, *src2));
1610 		&& REG_P (*src1) && REG_P (*src2)
1614 		replace_reg (src1, REGNO (*src2));
1615 		replace_reg (src2, tmp);
1680 		src2 = get_true_reg (&XVECEXP (pat_src, 0, 1));
1683 		src2_note = find_regno_note (insn, REG_DEAD, REGNO (*src2));
1685 		swap_to_top (insn, regstack, *src1, *src2);
1688 		replace_reg (src2, FIRST_STACK_REG + 1);
1715 		src2 = get_true_reg (&XVECEXP (pat_src, 0, 1));
1718 		src2_note = find_regno_note (insn, REG_DEAD, REGNO (*src2));
1725 		swap_to_top (insn, regstack, *src1, *src2);
1736 		replace_reg (src2, FIRST_STACK_REG + 1);
1746 		src2 = get_true_reg (&XVECEXP (pat_src, 0, 1));
1749 		src2_note = find_regno_note (insn, REG_DEAD, REGNO (*src2));
1756 		swap_to_top (insn, regstack, *src1, *src2);
1767 		replace_reg (src2, FIRST_STACK_REG + 1);
1853 	    src2 = get_true_reg (&XEXP (pat_src, 2));
1856 	    src2_note = find_regno_note (insn, REG_DEAD, REGNO (*src2));
1871 		    || (REGNO (*src2) == regstack->reg[regstack->top]
1876 		    int idx2 = (get_hard_regnum (regstack, *src2)
1881 		    regstack->reg[regstack->top - idx1] = REGNO (*src2);
1903 	      if (STACK_REG_P (*src2))
1904 		replace_reg (src2, get_hard_regnum (regstack, *src2));