llvm-project

c04b8e5e - [DWARFLinker] Unique unnamed types by their contents (#231980)

[DWARFLinker] Unique unnamed types by their contents (#231980) An anonymous type is identified by its declaration file and line, but several can be declared on one line, for example by a macro. The parallel linker merged all of them into a single DIE. The classic linker also considered the byte size, which got this right, but only for types that had different sizes. Make unnamed classes, structs, unions and enums consider their data members, bases and enumerators, in addition to their declaration. As a side effect, this also separates lambdas in function template instantiations that capture different types, which the parallel linker merged too. rdar://189405402