Hello, I try to locate a problem in GCSE pass and found some suspicious RTL code as follows. Is it legitimate to have a "fallthru" succ edge but next basic block is a different one? Thanks. ... ;; Succ edge 10 [91.5%] (fallthru) ;; Succ edge 9 [8.5%] ;; Start of basic block ( 8) -> 9 ... Cheers, Bingfeng Mei