basic-block.h
26.5 KB
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basic-block.h (could_fall_through): Declare. · 623a66fa
* 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. From-SVN: r83089
J"orn Rennecke committed