[llvm] [CodeGen][X86] Honor LargeEHEncoding when selecting x86-64 EH encoding (PR #210109)

via llvm-commits llvm-commits at lists.llvm.org
Thu Jul 16 09:48:22 PDT 2026


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:
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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp --diff_from_common_commit
``````````

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in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
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<details>
<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 9d7dd4105..c68c4af9c 100644
--- a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -157,23 +157,27 @@ void TargetLoweringObjectFileELF::Initialize(MCContext &Ctx,
     const CodeModel::Model EHCM =
         TgtM.Options.MCOptions.LargeEHEncoding ? CodeModel::Large : CM;
     if (isPositionIndependent()) {
-      PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-        ((EHCM == CodeModel::Small || EHCM == CodeModel::Medium)
-         ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
+      PersonalityEncoding =
+          dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+          ((EHCM == CodeModel::Small || EHCM == CodeModel::Medium)
+               ? dwarf::DW_EH_PE_sdata4
+               : dwarf::DW_EH_PE_sdata8);
       LSDAEncoding = dwarf::DW_EH_PE_pcrel |
-        (EHCM == CodeModel::Small
-         ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
+                     (EHCM == CodeModel::Small ? dwarf::DW_EH_PE_sdata4
+                                               : dwarf::DW_EH_PE_sdata8);
       TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-        ((EHCM == CodeModel::Small || EHCM == CodeModel::Medium)
-         ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
+                      ((EHCM == CodeModel::Small || EHCM == CodeModel::Medium)
+                           ? dwarf::DW_EH_PE_sdata4
+                           : dwarf::DW_EH_PE_sdata8);
     } else {
       PersonalityEncoding =
-        (EHCM == CodeModel::Small || EHCM == CodeModel::Medium)
-        ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
-      LSDAEncoding = (EHCM == CodeModel::Small)
-        ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
-      TTypeEncoding = (EHCM == CodeModel::Small)
-        ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
+          (EHCM == CodeModel::Small || EHCM == CodeModel::Medium)
+              ? dwarf::DW_EH_PE_udata4
+              : dwarf::DW_EH_PE_absptr;
+      LSDAEncoding = (EHCM == CodeModel::Small) ? dwarf::DW_EH_PE_udata4
+                                                : dwarf::DW_EH_PE_absptr;
+      TTypeEncoding = (EHCM == CodeModel::Small) ? dwarf::DW_EH_PE_udata4
+                                                 : dwarf::DW_EH_PE_absptr;
     }
     break;
   }

``````````

</details>


https://github.com/llvm/llvm-project/pull/210109


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