[tree-ssa] copy prop vs. debugging

[Jan Vroonhof]

[Usual caveat: Just lurking so feel free to ignore if I am not making sense]

Jason Merrill <jason@redhat.com> writes:

> When a temporary is copied into a variable, any dominated uses of that
> variable are replaced with uses of the temporary.

Isn't this always all usages (because of SSA form)?. If so can you not
do the inverse, i.e. replace all occurrences of (this SSA name of) the
temporary with (this SSA name of) the variable and then delete the
copy.

Jan