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authoramylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4>2004-06-14 12:09:08 +0000
committeramylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4>2004-06-14 12:09:08 +0000
commit9bb8a4af63c2dc43b16aad632a9c8c723235d554 (patch)
treea37b5ac1c93cff4befd42e4070615ba42213a250 /gcc/basic-block.h
parent41d51689c2f60e3a0489e31d6ecb5f2a784fc357 (diff)
downloadgcc-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.h1
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);