On 10/18/19 2:21 PM, Richard Biener wrote: >>> In most cases local types etc are a fairly small contributor to the >>> total volume -- but macros can contribute a lot in some codebases. >> (The >>> Linux kernel's READ_ONCE macro is one I've personally been bitten by >> in >>> the past, with a new local struct in every use. GCC doesn't >> deduplicate >>> any of those so the resulting bloat from tens of thousands of >> instances >>> of this identical structure is quite incredible...) >>> >> >> Sounds like something that would be beneficial to do with DWARF too. > > Otoh those are distinct types according to the C standard and since dwarf is > a source level representation we should preserve this (source locations also > differ).
Right. Maybe some partial deduplication would be possible, preserving type distinction. But since CTF doesn't include these, this is moot for now. Thanks, Pedro Alves
