[clang] [llvm] [AArch64] Prevent hotpatching from intercepting loop backedges (PR #229477)

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Mon Oct 12 12:48:22 PDT 2026


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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,c,cpp -- llvm/lib/Target/AArch64/AArch64HotpatchPadding.cpp clang/lib/CodeGen/CodeGenFunction.cpp clang/test/CodeGen/patchable-function-entry.c clang/test/DebugInfo/CXX/hotpatch-aarch64.cpp clang/test/DebugInfo/CXX/hotpatch-arm.cpp llvm/lib/CodeGen/PatchableFunction.cpp llvm/lib/Target/AArch64/AArch64.h llvm/lib/Target/AArch64/AArch64InstrInfo.cpp llvm/lib/Target/AArch64/AArch64TargetMachine.cpp --diff_from_common_commit
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/AArch64/AArch64HotpatchPadding.cpp b/llvm/lib/Target/AArch64/AArch64HotpatchPadding.cpp
index 1f4c9cbe6..67cc5eb2c 100644
--- a/llvm/lib/Target/AArch64/AArch64HotpatchPadding.cpp
+++ b/llvm/lib/Target/AArch64/AArch64HotpatchPadding.cpp
@@ -11,8 +11,8 @@
 // but an entry block that emits no code lets a branch to the next block (e.g. a
 // loop backedge) target the function's first instruction, which a hotpatch
 // overwrites. Such entry blocks are padded with a NOP, placed after any
-// zero-byte instructions (e.g. an empty Windows prologue). Like on x86, an entry
-// that starts with inline assembly is also padded, since the assembly may
+// zero-byte instructions (e.g. an empty Windows prologue). Like on x86, an
+// entry that starts with inline assembly is also padded, since the assembly may
 // define a branch target.
 //
 // This must run after every pass that may delete instructions, and before

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https://github.com/llvm/llvm-project/pull/229477


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