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author | amylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-06-14 12:09:08 +0000 |
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committer | amylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-06-14 12:09:08 +0000 |
commit | 9bb8a4af63c2dc43b16aad632a9c8c723235d554 (patch) | |
tree | a37b5ac1c93cff4befd42e4070615ba42213a250 /gcc/basic-block.h | |
parent | 41d51689c2f60e3a0489e31d6ecb5f2a784fc357 (diff) | |
download | gcc-9bb8a4af63c2dc43b16aad632a9c8c723235d554.tar.gz |
* basic-block.h (could_fall_through): Declare.
* cfganal.c (can_fallthru): Succeed if the target is EXIT_BLOCK_PTR.
Fail if the source already has a fallthrough edge to the exit
block pointer.
(could_fall_through): New function.
* cfgbuild.c (make_edges): Check if we already have a fallthrough
edge to the exit block pointer.
* cfglayout.c (fixup_fallthru_exit_predecessor): Check that it is
not called before reload has completed.
Handle special case of first block having a fall-through exit edge.
(cfg_layout_finalize): Don't call it before reload or if we have
rtl epilogues.
(fixup_reorder_chain): A fall through to the exit block does not
require the block to come last. Add sanity checks.
* cfgrtl.c (rtl_split_edge): Add special handling of fall through
edges to the exit block.
* function.c (cfglayout.h): #include.
(thread_prologue_and_epilogue_insns): If we have neither return nor
epilogue, but a fall through to the exit block from mid-function,
force a non-fall-through exit.
* Makefile.in (function.o): Depend on CFGLAYOUT_H.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@83089 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/basic-block.h')
-rw-r--r-- | gcc/basic-block.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/basic-block.h b/gcc/basic-block.h index 02ca28180ab..97f71efef4c 100644 --- a/gcc/basic-block.h +++ b/gcc/basic-block.h @@ -629,6 +629,7 @@ extern void find_sub_basic_blocks (basic_block); extern void find_many_sub_basic_blocks (sbitmap); extern void rtl_make_eh_edge (sbitmap *, basic_block, rtx); extern bool can_fallthru (basic_block, basic_block); +extern bool could_fall_through (basic_block, basic_block); extern void flow_nodes_print (const char *, const sbitmap, FILE *); extern void flow_edge_list_print (const char *, const edge *, int, FILE *); extern void alloc_aux_for_block (basic_block, int); |