[llvm] [AArch64] Assert `expandMOVImm` prioritizes optimal single MOVZ/N (PR #169341)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Target/AArch64/AArch64ExpandImm.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/lib/Target/AArch64/AArch64ExpandImm.cpp b/llvm/lib/Target/AArch64/AArch64ExpandImm.cpp
index 89d58b71e..ae5818419 100644
--- a/llvm/lib/Target/AArch64/AArch64ExpandImm.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ExpandImm.cpp
@@ -549,7 +549,8 @@ void AArch64_IMM::expandMOVImm(uint64_t Imm, unsigned BitSize,
   // Prefer MOVZ/MOVN over ORR because of the rules for the "mov" alias.
   if ((BitSize / 16) - OneChunks <= 1 || (BitSize / 16) - ZeroChunks <= 1) {
     expandMOVImmSimple(Imm, BitSize, OneChunks, ZeroChunks, Insn);
-    assert(Insn.size() == 1 && "Move of immediate should have expanded to a single MOVZ/MOVN");
+    assert(Insn.size() == 1 &&
+           "Move of immediate should have expanded to a single MOVZ/MOVN");
     return;
   }
 

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https://github.com/llvm/llvm-project/pull/169341