contrib/gcc/final.c

303    delayed branch sequence (we don't count the insn needing the
304    delay slot).   Zero if not in a delayed branch sequence.  */
357 /* Indicate that branch shortening hasn't yet been done.  */
383 /* Obtain the current length of an insn.  If branch shortening has been done,
449 /* Obtain the current length of an insn.  If branch shortening has been done,
457 /* Obtain the current length of an insn.  If branch shortening has been done,
502    for branch ranges starting before X, so we can just round what we have.
574    between a branch and its target might grow or shrink depending on
575    the alignment the start insn of the range (the branch for a forward
576    branch or the label for a backward branch) starts out on; if these
630 /* Compute a worst-case reference address of a branch so that it
632    size of the branch itself is unknown, the size of the branch is
633    not included in the range.  I.e. for a forward branch, the reference
634    address is the end address of the branch as known from the previous
635    branch shortening pass, minus a value to account for possible size
636    increase due to alignment.  For a backward branch, it is the start
637    address of the branch as known from the current pass, plus a value
640    to exclude the branch size.  */
643 insn_current_reference_address (rtx branch)
651   seq = NEXT_INSN (PREV_INSN (branch));
653   if (!JUMP_P (branch))
656        Thus, we can treat it like a backward branch.
660   dest = JUMP_LABEL (branch);
666       /* Forward branch.  */
672       /* Backward branch.  */
680 /* Compute branch alignments based on frequency information in the
728 	 1) to avoid fetch stalls when branch destination is near cache boundary
798    reorg.c, since the branch splitting exposes new instructions with delay
1062 	  /* Inside a delay slot sequence, we do not do any branch shortening
1064 	     of the branch.  */
1593 	 jumps to each branch only reached from one place.  */
1684    used for within delayed branch sequence output).
1880 	 codes from the instruction just before the branch.  */
1890 	     at a branch, the predecessor of the branch is a regular
1891 	     insn, and that branch is the only way to reach this label,
1892 	     set the condition codes based on the branch and its
2141 	    /* A delayed-branch sequence */
2146 	    /* Record the delay slots' frame information before the branch.
2245 	/* If this is a conditional branch, maybe modify it
2364 		   when generating a far jump in a delayed branch
3689 /* Return 1 if branch is a forward branch.
3691    output templates to customary add branch prediction hints.