Is there a way to modify the GIMPLE mid compilation, when i say modify i mean something as simple as changing a "+" for a "-". If possible i would this change to be trackable i.e. line number and change made. I am using a plugin which interupts the compiler in accordance to the following pass manager settings: GIMPLE_PASS, "*extract_gimple_plugin", NULL, execute_plugin, NULL, NULL, 0, 0, PROP_cfg | PROP_gimple_any, 0, 0, 0, 0, I am using GCC 4.6.1. Please post if you additional details are required. I couldnt find any function similar to extract_gimple which exists in the pretty-print header, that modify instead of extracting. Thanks -- View this message in context: http://old.nabble.com/Modifying-GIMPLE-during-compilation-process-tp33087344p33087344.html Sent from the gcc - Help mailing list archive at Nabble.com.