On Thu, Dec 13, 2012 at 3:52 PM, Matt Davis <mattdav...@gmail.com> wrote: > > On Fri, Dec 14, 2012 at 10:00 AM, Ian Lance Taylor <i...@google.com> wrote: >> On Thu, Dec 13, 2012 at 4:16 AM, Matt Davis <mattdav...@gmail.com> wrote: >>> >>> I have a GIMPLE pass and would like to make use of the data type >>> information that the Go frontend produces. Is there a way to access >>> this information from the middle end without having to query the >>> frontend? >> >> What kind of data type information are you interested in? > > I am working on an implementation of my alternate memory allocator for Go. > This allocator makes use of the layout of data types. I was hoping to > use the existing descriptors that are generated by the frontend, so > that I would not have to create my own. My runtime will make use of > these descriptors. However, it would suit me just as well to create my > own type-information. It will just bloat the binary a bit, but, for > my purposes, that is no big deal.
The Go frontend allocates memory by calling just a few magic functions, all listed in gcc/go/gofrontend/runtime.def. I would change those functions to take a type descriptor as a parameter where they don't already do so. Then you can reliably find them in your GIMPLE pass and get the Go type descriptor. Ian
