Steve Teale <steve.teale@xxxxxxxxxxxxxxxx> writes: > I have two outstanding buts of patch where I'm not making much progress. > Between 4.3.4 and 4.4.3, tree-gimple disappeared, and was replaced by > gimple, and tree-nested was radically changed. Do you know much about > those changes? In gcc 4.4 we introduced a new intermediate representation which uses less memory and is more efficient to work with. It is called GIMPLE and is documented in doc/gimple.texi. The C/C++ frontends used to produce general trees, and the gimplification pass trimmed that down to a language-independent set of trees known as GENERIC. The gimplification pass now produces a new IR, GIMPLE, rather than GENERIC. I don't know what your patches do or where they are supposed to take effect. If you are changing something which affects the middle-end, then you are going to need to write it for GIMPLE rather than for GENERIC. If your new tree codes are front-end specific, then you need to figure out how to translate them into GIMPLE. Ian
