diff options
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/gcc/function.c b/gcc/function.c index 63ecd7c378d..14d21c97a42 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -5295,8 +5295,7 @@ thread_prologue_and_epilogue_insns (void) { bool inserted; rtx seq ATTRIBUTE_UNUSED, epilogue_end ATTRIBUTE_UNUSED; - edge entry_edge ATTRIBUTE_UNUSED; - edge e; + edge entry_edge, e; edge_iterator ei; rtl_profile_for_bb (ENTRY_BLOCK_PTR); @@ -5328,10 +5327,6 @@ thread_prologue_and_epilogue_insns (void) record_insns (seq, NULL, &prologue_insn_hash); set_insn_locators (seq, prologue_locator); - /* This relies on the fact that committing the edge insertion - will look for basic blocks within the inserted instructions, - which in turn relies on the fact that we are not in CFG - layout mode here. */ insert_insn_on_edge (seq, entry_edge); inserted = true; #endif @@ -5566,13 +5561,23 @@ thread_prologue_and_epilogue_insns (void) cur_bb->aux = cur_bb->next_bb; cfg_layout_finalize (); } + epilogue_done: default_rtl_profile (); if (inserted) { + sbitmap blocks; + commit_edge_insertions (); + /* Look for basic blocks within the prologue insns. */ + blocks = sbitmap_alloc (last_basic_block); + sbitmap_zero (blocks); + SET_BIT (blocks, entry_edge->dest->index); + find_many_sub_basic_blocks (blocks); + sbitmap_free (blocks); + /* The epilogue insns we inserted may cause the exit edge to no longer be fallthru. */ FOR_EACH_EDGE (e, ei, EXIT_BLOCK_PTR->preds) |