Am Dienstag, 9. März 2021, 10:10:47 MEZ hat Mark Wielaard <m...@klomp.org> Folgendes geschrieben:
> Hi Allan, > > On Tue, Mar 09, 2021 at 09:06:54AM +0100, Allan Sandfeld Jensen wrote: > > Btw, question for gcc/binutils > > > > Any reason the work done by tools like dwz couldn't be done in the compiler > > or > > linker? Seems a bit odd to have a post-linker that optimizes the generated > > code, when optimizations should already be enabled. > > > dwz does two kinds of optimization. First it attempts to optimize the > DWARF debugging information for a given object (executable or shared > library). Secondly it tries to put shared pieces of a list of given > objects into a supplemental file that gets referenced from all the > given object files. > > Technically the first optimization could be done by the linker. But > the second optimization is really a post-linker step. Related question: If it were part of binutils, maybe it could be adapted to optimize DWARF debugging information of PE files as well. Hannes
