[lld] [lld][macho] Support 1-byte branch relocs for x86_64 (PR #164439)

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github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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<details>
<summary>
You can test this locally with the following command:
</summary>

``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- lld/MachO/Arch/X86_64.cpp lld/MachO/InputFiles.cpp lld/MachO/Relocations.h --diff_from_common_commit
``````````

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The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
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<details>
<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/lld/MachO/Arch/X86_64.cpp b/lld/MachO/Arch/X86_64.cpp
index 5d69c5dee..4292cd8d6 100644
--- a/lld/MachO/Arch/X86_64.cpp
+++ b/lld/MachO/Arch/X86_64.cpp
@@ -92,8 +92,8 @@ int64_t X86_64::getEmbeddedAddend(MemoryBufferRef mb, uint64_t offset,
     addend = static_cast<int32_t>(read32le(loc));
     break;
   case 3:
-     addend = read64le(loc);
-     break;
+    addend = read64le(loc);
+    break;
   default:
     llvm_unreachable("invalid r_length");
   }

``````````

</details>


https://github.com/llvm/llvm-project/pull/164439