Similar to the previous patch, except this time working on
avail_expr_stack. It's a bit more complex because tree-ssa-threadedge.c
calls back into lookup_avail_expr, so we need to get avail_expr_stack
passed around in there too. But we were going to need to do that anyway.
I believe this i
This just moves a few functions around to avoid the need for forward
declarations in an upcoming change towards fixing 47679. This shouldn't
affect code generation in any way shape or form.
Bootstrapped and regression tested on x86_64-linux-gnu. Installed on
the trunk.
jeff
commit a633
