Hi Richard, > The issue with the bugzilla is that it lacked appropriate testcase(s) and thus > it is now a mess. There are clear testcases (maybe not in the benchmarks you
Agreed - it's not clear whether any of the proposed changes would actually help the original issue. My patch absolutely does. > care about) that benefit from code hoisting as enabler, mainly when control > flow can be then converted to data flow. Also note that "size optimizations" > are important for all cases where followup transforms have size limits on the > IL > in place. The gain from -fcode-hoisting is about 0.2% overall on Thumb-2. Ie. it's definitely useful, but there are much larger gains to be had from other tweaks [1]. So we can live without it until a better solution is found. [1] https://gcc.gnu.org/ml/gcc-patches/2019-07/msg01739.html Wilco
