Re: [PATCH] Fix make_rename_temp to work at -O0

[Paolo Bonzini <paolo dot bonzini at polimi dot it>]

> I'd do it earlier, but right now it assumes that we are in SSA form. 

That's because of make_rename_temp.  Try now.

The patch that Richard Henderson approved and I have applied (with a 
trivial correction* due to changes in tree_rest_of_compilation made 
since when I had developed the patch), allows it to work much earlier 
and even at -O0, just after the CFG is built.

Paolo

* Here is it:

@@ -501,7 +501,7 @@
 make_rename_temp (tree type, const char *prefix)
 {
   tree t = create_tmp_var (type, prefix);
-  if (vars_to_rename)
+  if (referenced_vars)
     {
       add_referenced_tmp_var (t);
       bitmap_set_bit (vars_to_rename, var_ann (t)->uid);