[Bug rtl-optimization/60159] improve code for conditional sibcall

[law at redhat dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60159

Jeffrey A. Law <law at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |law at redhat dot com

--- Comment #2 from Jeffrey A. Law <law at redhat dot com> ---
Lots of things mess up debug info :-)  This seems reasonably desirable to me
and shouldn't be terribly difficult to implement, possibly guarding it on -Og.