Ian Lance Taylor wrote: > VIbhav Garg <[EMAIL PROTECTED]> writes: > > >>I am working on some optimizations on the CFG. Can someone please give >>me some info on the following - >> >>1. For an gimple expression node, how do we determine the return type? > > > You can get the type of any gimple expression using TREE_TYPE. > > >>2. How do we create a temporary variable, and add it to the list of >>variables defined in the current function declaration? > > > create_tmp_var.
I have seen calls to add_referenced_tmp_var after a call to create_tmp_var. Is this necessary? > > >>3. Any particular code I can look at to see how it works. > > > grep for create_tmp_var. > > >>4. Any issues I should be aware of? > > > It kinds of depends on when during the compilation you are doing this. > When in SSA form you probably need to do other stuff as well. I am doing this before SSA form is applied but after CFG is built. > > Ian >
