diff options
Diffstat (limited to 'gcc/flow.c')
| -rw-r--r-- | gcc/flow.c | 16 |
1 files changed, 7 insertions, 9 deletions
@@ -393,7 +393,6 @@ static int merge_blocks_move_successor_nojumps PARAMS ((basic_block, static int merge_blocks PARAMS ((edge,basic_block,basic_block, int)); static bool try_optimize_cfg PARAMS ((int)); -static bool forwarder_block_p PARAMS ((basic_block)); static bool can_fallthru PARAMS ((basic_block, basic_block)); static bool try_redirect_by_replacing_jump PARAMS ((edge, basic_block)); static bool try_simplify_condjump PARAMS ((basic_block)); @@ -485,9 +484,6 @@ static void flow_loops_tree_build PARAMS ((struct loops *)); static int flow_loop_level_compute PARAMS ((struct loop *, int)); static int flow_loops_level_compute PARAMS ((struct loops *)); static void find_sub_basic_blocks PARAMS ((basic_block)); -static bool redirect_edge_and_branch PARAMS ((edge, basic_block)); -static basic_block redirect_edge_and_branch_force PARAMS ((edge, basic_block)); -static rtx block_label PARAMS ((basic_block)); /* Find basic blocks of the current function. F is the first insn of the function and NREGS the number of register @@ -1598,10 +1594,12 @@ split_block (bb, insn) } /* Return label in the head of basic block. Create one if it doesn't exist. */ -static rtx +rtx block_label (block) basic_block block; { + if (block == EXIT_BLOCK_PTR) + return NULL_RTX; if (GET_CODE (block->head) != CODE_LABEL) block->head = emit_label_before (gen_label_rtx (), block->head); return block->head; @@ -1609,7 +1607,7 @@ block_label (block) /* Return true if the block has no effect and only forwards control flow to its single destination. */ -static bool +bool forwarder_block_p (bb) basic_block bb; { @@ -1759,7 +1757,7 @@ try_redirect_by_replacing_jump (e, target) Return true if transformation suceeded. We still return flase in case E already destinated TARGET and we didn't managed to simplify instruction stream. */ -static bool +bool redirect_edge_and_branch (e, target) edge e; basic_block target; @@ -1867,7 +1865,7 @@ redirect_edge_and_branch (e, target) /* Redirect edge even at the expense of creating new jump insn or basic block. Return new basic block if created, NULL otherwise. Abort if converison is impossible. */ -static basic_block +basic_block redirect_edge_and_branch_force (e, target) edge e; basic_block target; @@ -1937,7 +1935,7 @@ redirect_edge_and_branch_force (e, target) new_bb->global_live_at_start = OBSTACK_ALLOC_REG_SET (&flow_obstack); new_bb->global_live_at_end = OBSTACK_ALLOC_REG_SET (&flow_obstack); COPY_REG_SET (new_bb->global_live_at_start, - e->dest->global_live_at_start); + target->global_live_at_start); COPY_REG_SET (new_bb->global_live_at_end, new_bb->global_live_at_start); } |