>> This discussion is about reducing the number of .debug_addr entries you >> need, so the place to look would be the "class address" attributes. >> There aren't all that many of them, and the one most likely to benefit >> would be DW_AT_low_pc. >> >> We made it okay to have DW_AT_high_pc be a constant, which is implicitly >> the sum of that constant with the same DIE's DW_AT_low_pc value. >> How about if DW_AT_low_pc could also be a constant, which would be added >> to the containing block/subprogram's DW_AT_low_pc? > > It'd catch a fair few, maybe even most, of the cases - though still > potentially many more relocations than needed: eg: two (or more) > functions in the same section would end up using separate relocations > (assuming they were in a CU with at least one function in some other > section - such as an inline function in a comdat).
Oh, because the unit wouldn't have a low_pc, it would have ranges? Well... why not just use ranges, in that case? .debug_rnglists is already tuned to reduce relocations. A range list with only one entry is the same as a contiguous range, and DW_RLE_offset_pair is basically the same as using constant low_pc and high_pc. --paulr _______________________________________________ Dwarf-Discuss mailing list Dwarf-Discuss@lists.dwarfstd.org http://lists.dwarfstd.org/listinfo.cgi/dwarf-discuss-dwarfstd.org
