On Tue, Apr 14, 2015 at 5:06 PM, Jiong Wang wrote: > but, after some investigation I found gcc actually generate difference > code when debug info enabled because > DEBUG_INSN will affect data flow analysis.
It should not, so that's a bug. > So I think this stage2/3 binary difference is acceptable? No, they should be identical. If there's a difference, then there's a bug - which, it seems, you've already found, too. Ciao! Steven