On 08/05/2015 08:18 AM, Richard Sandiford wrote:
Building some targets results in a warning about orig_dup[i] potentially being used uninitialised. I think the warning is fair, since it isn't obvious that the reog_data-based loop bound remains unchanged between:for (i = 0; i < recog_data.n_dups; i++) orig_dup[i] = *recog_data.dup_loc[i]; and: for (i = 0; i < recog_data.n_dups; i++) *recog_data.dup_loc[i] = orig_dup[i]; Tested on x86_64-linux-gnu. OK to install? Thanks, Richard gcc/ * reload1.c (elimination_costs_in_insn): Make it obvious to the compiler that the n_dups and n_operands loop bounds are invariant.
So thinking more about this, I think the best way forward is to: 1. Create a new BZ with the false positive extracted from c#4. 2. Install your patch and close 55035. I'll take care of #1, you can handle #2. jeff
