contrib/gcc/cse.c

560   /* Size of current branch path, if any.  */
562   /* Current branch path, indicating which branches will be taken.  */
565       /* The branch insn.  */
566       rtx branch;
4537    branch.  It will be zero if not.
5902 	 be a conditional or computed branch.  */
6751    block, and the branch path.
6753    The branch path indicates which branches should be followed.  If a nonzero
6755    of branches will be taken.  The branch path is only used if
6760    the current block.  The incoming structure's branch path, if any, is used
6761    to construct the output branch path.  */
6775   /* Update the previous branch path, if any.  If the last branch was
6778      shorten the path by one and look at the previous branch.  We know that
6779      at least one branch must have been taken if PATH_SIZE is nonzero.  */
6825       /* See if this insn is in our branch path.  If it is and we are to
6827       if (path_entry < path_size && data->path[path_entry].branch == p)
6862 	     basic block when the branch is taken.  */
6873 	      /* Similarly, don't put a branch in our path more than once.  */
6875 		if (data->path[i].branch == p)
6881 	      data->path[path_entry].branch = p;
6884 	      /* This branch now ends our path.  It was possible that we
6885 		 didn't see this branch the last time around (when the
6894 	  /* Detect a branch around a block of code.  */
6906 		if (data->path[i].branch == p)
6920 		  data->path[path_entry].branch = p;
6950   /* End the current branch path.  */
6951   data->path[path_size].branch = 0;
7051 	     us a new branch path to investigate.  */
7080    block.  NEXT_BRANCH points to the branch path when following jumps or
7120       /* See if this is a branch that is part of the path.  If so, and it is
7122       if (next_branch->branch == insn)
7133 		 Then follow this branch.  */