On Oct 8, 2012, at 9:21 AM, Steve Ellcey <sell...@mips.com> wrote: > The gcc.target/octeon-bbit-2.c is failing with -Os because that optimization > level does not do whichever optimization it is that results in a bbit instead > of a bbit[01]l. I would like to skip this test for -Os the way it already > gets > skipped for -O0. > > Tested on mips-mti-elf. Ok for checkin?
Ideally I'd like a mips expert to weigh in on this. The issue is, is the code smaller with the other instruction? If so, is there a reasonable way to obtain that type of win more often in the port with -Os? Now, if you are that mips expert, that's fine, but, trivially you don't need my approval to check it in. If the code is larger, trivially, the patch is ok. If the optimization generally hurt code size and can't be made to win, the patch is ok. If always the same size, it would seem ok. I just don't have the mips specific background to know which case this is.
