On Tue, Aug 15, 2023 at 4:05 PM Andrew Fish via groups.io <afish=apple....@groups.io> wrote: > > Chao, > > From a quick google it looks like CSR* is used to access banks of registers > that relate to things like performance counters and debug infrastructure and > the number of banks of these register sets is likely implementation defined. > Seems like we could introduce some Fixed At Build PCD values that define the > maximum number of elements in a given bank. > > If we are forced to use assembler it might be possible to write some macros > that used the fixed at build values to only generate functions for banks that > are needed for a given build. Then I think it becomes an exercise in dead > code stripping the assembler. Most compilers generate assembler that contains > functions that can be stripped as long as those functions follow certain > rules. > > As a side note it would be good for us to have an FAQ/Wiki entry for the dead > code stripping rules for the various flavors of assembler. I know the Apple > assembler has a unique take on this.
FWIW, I'm almost positive there's no DCE in GNU as (or llvm-as as well). Unless you use something ffunction-sections -fdata-sections-like, but then you're relying on the linker + gc-sections to take care of it, just like GCC/clang would. -- Pedro -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#107768): https://edk2.groups.io/g/devel/message/107768 Mute This Topic: https://groups.io/mt/100751724/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
