On Thu, Jun 05, 2014 at 10:43:25PM +0100, Richard Sandiford wrote: > This final patch uses a common .md file to define all standard > constraints except 'g'.
I had a look at what targets still use "g". Note: there can be errors in this, it's all based on \<g[,"] :-) * frv and mcore use "g" in commented-out patterns; * cr16, mcore, picochip, rl78, and sh use "g" where they mean "rm" or "m"; * m68k uses it (in a dbne pattern) where the C template splits the "r", "m", "i" cases again; * bfin, fr30, h8300, m68k, rs6000, and v850 use it as the second operand (# bytes pushed) of the call patterns; that operand is unused in all these cases, could just be ""; * cris, m68k, pdp11, and vax actually use "g". So it won't be all that much work to completely get rid of "g". Do we want that? Segher