* Richard Biener: > On Wed, Apr 17, 2019 at 9:19 AM Thomas König <t...@tkoenig.net> wrote: >> >> Hi, >> >> thanks a lot for the extensive discussion :-) >> >> How should we now proceed, first for gcc 9, snd then for backporting? >> Use Richard‘s patch with the corresponding Fortran FE change? > > Btw, for the testcase the fortran FE could also simply opt to not > make def_init TREE_READONLY. Or even better, for all-zero > initialization omit the explicit initialization data and instead > mark it specially in the vtable (just use a NULL initializer > denoting zero-initialization?). Even .bss costs (runtime) memory.
Not just that, .bss adds to the commit charge, while .rodata would not. So it's not clear that using .bss for zero constants is always a win. Thanks, Florian
