optabs.c (emit_libcall_block): Add a REG_EH_REGION reg note to all calls within a libcall block to indicate no...
* optabs.c (emit_libcall_block): Add a REG_EH_REGION reg note to all
calls within a libcall block to indicate no throws are possible.
* flow.c (find_basic_blocks, find_basic_blocks_1): Don't look for
libcall blocks. Don't add edges to exception handlers if we see
a REG_EH_REGION note with a value of 0.
(make_edges): Override active_eh_region vector if the call has a note
indicating the call does not throw.
From-SVN: r24757
