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* basic-block.h (could_fall_through): Declare.
authoramylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4>
Mon, 14 Jun 2004 12:09:08 +0000 (12:09 +0000)
committeramylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4>
Mon, 14 Jun 2004 12:09:08 +0000 (12:09 +0000)
commit9bb8a4af63c2dc43b16aad632a9c8c723235d554
treea37b5ac1c93cff4befd42e4070615ba42213a250
parent41d51689c2f60e3a0489e31d6ecb5f2a784fc357
* 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
gcc/ChangeLog
gcc/Makefile.in
gcc/basic-block.h
gcc/cfganal.c
gcc/cfgbuild.c
gcc/cfglayout.c
gcc/cfgrtl.c
gcc/function.c