This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [PATCH] shrink-wrap: Handle multiple predecessors of prologue


We might not be able to redirect the jump from the block formerly the
predecessor of PRO, to jump over the new block (it was not necessarily a
fallthrough edge, could be EDGE_COMPLEX).  In most cases we could do it
of course.  I would prefer not to add special case code (that is not as
well tested).

If there was a jump already, there's no need to redirect it? Only a fallthru edge would be affected by a new block before its target, or am I missing something?


Bernd


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]