[lld] [lld][ELF] Sort thunks by their destination to allow quicker convergence (PR #209962)
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Wed Jul 15 21:51:51 PDT 2026
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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->
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<details>
<summary>
You can test this locally with the following command:
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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- lld/ELF/Relocations.cpp lld/ELF/SyntheticSections.cpp lld/ELF/SyntheticSections.h lld/ELF/Thunks.cpp lld/ELF/Thunks.h --diff_from_common_commit
``````````
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changing `origin/main` to the base branch/commit you want to compare against.
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<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/lld/ELF/Relocations.cpp b/lld/ELF/Relocations.cpp
index 99213fc63..1dc96a483 100644
--- a/lld/ELF/Relocations.cpp
+++ b/lld/ELF/Relocations.cpp
@@ -1968,12 +1968,12 @@ bool ThunkCreator::createThunks(uint32_t pass,
}
for (auto &p : isd->thunkSections) {
- // Ordering thunks by their destination allows for quicker convergence.
- // Bulk of thunks are created in pass 0. So sorting them then has
- // most impact and should be sufficient in most cases.
+ // Ordering thunks by their destination allows for quicker
+ // convergence. Bulk of thunks are created in pass 0. So sorting them
+ // then has most impact and should be sufficient in most cases.
addressesChanged |= p.first->assignOffsets(pass == 0);
}
- });
+ });
for (auto &p : thunkedSections)
addressesChanged |= p.second->assignOffsets();
diff --git a/lld/ELF/Thunks.cpp b/lld/ELF/Thunks.cpp
index 5b1d01301..c8f01b0e0 100644
--- a/lld/ELF/Thunks.cpp
+++ b/lld/ELF/Thunks.cpp
@@ -630,7 +630,8 @@ void Thunk::setOffset(uint64_t newOffset) {
}
uint64_t Thunk::getDestVA() const {
- return destination.isInPlt(ctx) ? destination.getPltVA(ctx) : destination.getVA(ctx, addend);
+ return destination.isInPlt(ctx) ? destination.getPltVA(ctx)
+ : destination.getVA(ctx, addend);
}
// AArch64 Thunk base class.
``````````
</details>
https://github.com/llvm/llvm-project/pull/209962
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