[PATCH] D25467: [ELF] - Alternative fix to prevent possible crash on large output.

Ed Maste via llvm-commits llvm-commits at lists.llvm.org
Tue Oct 25 06:56:50 PDT 2016

On 18 October 2016 at 11:51, George Rimar via llvm-commits
<llvm-commits at lists.llvm.org> wrote:
> As far I know MD5 and SHA1 can not be parrallized. You sure can split
> original buffer and compute multiple hashes in parrallel and combine them
> somehow at the end, but result  of hash(buf1) + hash(buf2) + .... +
> hashN(bufN) will never be equal to hash(whole bufer). Do you have some
> specific solution in mind here ?

The build-ID can be calculated as a combination of hashes of
individual chunks, and I believe gold already supports this. The
build-ID has to be deterministic and reproducible for a given linker,
but it's not a problem if a different linker or different version of
the linker produces a different build-ID.

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