------- Additional Comments From jakub at redhat dot com 2005-08-09 17:27 ------- The problem is in insert_insn_end_bb. That function is called to hoist the common expression to the end of bb0. But, bb0 ends with a call that can throw, so insert_insn_end_bb decides not to put it after the call, but before it and load of its parameters. And that's the problem here, because that callee's argument (this) is the same as caller's argument (this) and CSE already removed that parameter load (as the argument is in r3 already from the entry block). insert_insn_end_bb keeps searching for parameter loads, until it reaches the beginning of the bb0 and inserts it there, without checking whether it crosses any setter of pseudos it uses.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23299
