dist/gcc/tree-ssa-live.h

73   /* True if this map is for out-of-ssa, otherwise for live range
201 /*  ---------------- live on entry/exit info ------------------------------
203     This structure is used to represent live range information on SSA based
205     live-on-entry information and live-on-exit information can be calculated.
206     As well, partitions are marked as to whether they are global (live
209     The live-on-entry information is per block.  It provide a bitmap for
210     each block which has a bit set for each partition that is live on entry to
213     The live-on-exit information is per block.  It provides a bitmap for each
214     block indicating which partitions are live on exit from the block.
220        originate. They are *NOT* considered live on entry to the block
223        The Def of a PHI node is *not* considered live on entry to the block.
239   /* Bitmaps of live on entry blocks for partition elements.  */
242   /* Bitmaps of what variables are live on exit for a basic blocks.  */
245   /* Number of basic blocks when live on exit calculated.  */
248   /* Vector used when creating live ranges as a visited stack.  */
278 partition_is_global (tree_live_info_p live, int p)
280   gcc_checking_assert (live->global);
281   return bitmap_bit_p (live->global, p);
285 /* Return the bitmap from LIVE representing the live on entry blocks for
289 live_on_entry (tree_live_info_p live, basic_block bb)
291   gcc_checking_assert (live->livein
295   return &live->livein[bb->index];
299 /* Return the bitmap from LIVE representing the live on exit partitions from
303 live_on_exit (tree_live_info_p live, basic_block bb)
305   gcc_checking_assert (live->liveout
309   return &live->liveout[bb->index];
316 live_var_map (tree_live_info_p live)
318   return live->map;
322 /* Mark partition P as live on entry to basic block BB in LIVE.  */
325 make_live_on_entry (tree_live_info_p live, basic_block bb , int p)
327   bitmap_set_bit (&live->livein[bb->index], p);
328   bitmap_set_bit (live->global, p);