On Mon, Apr 9, 2012 at 11:55 AM, Eric Botcazou <ebotca...@adacore.com> wrote: > Hi, > > with the numerous checks generated in Ada, the gimplification process can > generated dead branches that aren't easily eliminated at -O0 and can impair > the debugging experience. We have found that unconditionally cleaning up the > CFG before emitting the prologue/epilogue can help in some cases. This is the > same idiom already used in rest_of_handle_jump2 for example. > > Tested on x86_64-suse-linux. Comments?
Isn't the gimple cfg-cleanup we run post optimization (right before expansion) not enough? Or the cfg-cleanup we perform right after expansion now? At least if the branches are really caused by the gimplification process I would expect things to be cleaned up at this point, no? Richard. > > > 2012-04-09 Eric Botcazou <ebotca...@adacore.com> > > * function.c (rest_of_handle_thread_prologue_and_epilogue): Clean up > the CFG before generating prologue/epilogue even when not optimizing. > > > -- > Eric Botcazou
