[PATCH] D102964: [lld-macho] Implement cstring deduplication
Jez Ng via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Jun 7 19:19:31 PDT 2021
int3 marked an inline comment as done.
int3 added inline comments.
================
Comment at: lld/MachO/InputSection.h:102
+ uint32_t inSecOff;
+ uint32_t hash;
+ uint64_t outSecOff;
----------------
gkm wrote:
> Why are we truncating 64-bit hashes to 32 bits? Because the low-order 32 bits are sufficient, and it's more important that `StringPiece` be 16 bytes vs. 24 bytes?
This was copied from LLD-ELF's implementation, and yeah the motivation is to reduce the memory cost. I'll copy over the comment too...
================
Comment at: lld/MachO/InputSection.h:142
+
+ std::vector<StringPiece> pieces;
};
----------------
alexshap wrote:
> does it need to be `public` ?
`CStringSection::finalize()` needs it to be public
Repository:
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https://reviews.llvm.org/D102964/new/
https://reviews.llvm.org/D102964
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