contrib/gcc/optabs.c

135 /* Add a REG_EQUAL note to the last insn in INSNS.  TARGET is being set to
139    If the last insn does not set TARGET, don't do anything, but return 1.
148   rtx last_insn, insn, set;
168   set = single_set (last_insn);
169   if (set == NULL_RTX)
172   if (! rtx_equal_p (SET_DEST (set), target)
174       && (GET_CODE (SET_DEST (set)) != STRICT_LOW_PART
175 	  || ! rtx_equal_p (XEXP (SET_DEST (set), 0), target)))
233   /* Otherwise, get an object of MODE, clobber it, and set the low-order
886      and INTO_INPUT), then emit code to set up OUTOF_TARGET.
1731       /* Indicate for flow that the entire target reg is being set.  */
2142    [(set TARG0 (operate OP0 OP1)) (set TARG1 (operate ...))].
3211 no_conflict_move_test (rtx dest, rtx set, void *p0)
3227 	   /* Likewise if this insn depends on a register set by a previous
3229 	      register) that is set or clobbered by a previous insn.
3233 	   || (GET_CODE (set) == SET
3234 	       && (modified_in_p (SET_SRC (set), p->first)
3235 		   || modified_in_p (SET_DEST (set), p->first)
3236 		   || modified_between_p (SET_SRC (set), p->first, p->insn)
3237 		   || modified_between_p (SET_DEST (set), p->first, p->insn))))
3406    We first emit any insns that set a pseudo on the assumption that these are
3419    values of anything set inside a libcall block, so we know they must
3431   /* If this is a reg with REG_USERVAR_P set, then it could possibly turn
3466   /* First emit all insns that set pseudos.  Remove them from the list as
3467      we go.  Avoid insns that set pseudos which were referenced in previous
3470      set in previous insns.  */
3474       rtx set = single_set (insn);
3486       if (set != 0 && REG_P (SET_DEST (set))
3487 	  && REGNO (SET_DEST (set)) >= FIRST_PSEUDO_REGISTER)
3852    set and to jump to LABEL if the condition is true.  If X is a
4466    *TRUNCP_PTR is set to 1 if it is necessary to output
4612 	      /* Test whether the sign bit is set.  */
4616 	      /* The sign bit is not set.  Convert as signed.  */
4621 	      /* The sign bit is set.
4785      So we know that the most important bit set in mantissa corresponds to
4964    optab.  Each entry is set equal to a string consisting of a leading
5917   /* Without an appropriate setcc instruction, use a set of branches to
5938    a set of instructions that takes a value from OLD_REG as an input and
5940    set to the current contents of MEM.  After SEQ, a compare-and-swap will
6259 /* This function expands a test-and-set operation.  Ideally we atomically
6273   /* If the target supports the test-and-set directly, great.  */