On Tuesday, 16 November 2021 21:25:33 CET Jason Merrill wrote: > On 11/8/21 15:00, Matthias Kretz wrote: > > I forgot to mention why I tagged it [RFC]: I needed one more bit of > > information on the template args TREE_VEC to encode > > EXPLICIT_TEMPLATE_ARGS_P. Its TREE_CHAIN already points to an integer > > constant denoting the number of non-default arguments, so I couldn't > > trivially replace that. Therefore, I used the sign of that integer. I was > > hoping to find a cleaner solution, though. > It seems that we aren't using any TREE_LANG_FLAG_n on TREE_VEC, so that > would be a cleaner solution.
I tried that first but realized that TREE_VEC doesn't allow any TREE_LANG_FLAGs (it uses those bits for the length IIRC). And setting the TREE_LANG_FLAGs on the TREE_CHAIN of the TREE_VEC can't work either (since the int constants are shared between many trees). Should I maybe turn the TREE_CHAIN into a TREE_LIST using TREE_PURPOSE and TREE_VALUE for EXPLICIT_TEMPLATE_ARGS_P and non-default arguments, respectively? (And where would I document this?) -- ────────────────────────────────────────────────────────────────────────── Dr. Matthias Kretz https://mattkretz.github.io GSI Helmholtz Centre for Heavy Ion Research https://gsi.de stdₓ::simd ──────────────────────────────────────────────────────────────────────────
