[clang] [clang][x86][bytecode] Replace interp__builtin_parity/clrsb/bitreverse/ffs with static bool interp__builtin_elementwise_int_unaryop callback (PR #162346)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- clang/lib/AST/ByteCode/InterpBuiltin.cpp
``````````

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``````````diff
diff --git a/clang/lib/AST/ByteCode/InterpBuiltin.cpp b/clang/lib/AST/ByteCode/InterpBuiltin.cpp
index 3792588a2..b1e7929ab 100644
--- a/clang/lib/AST/ByteCode/InterpBuiltin.cpp
+++ b/clang/lib/AST/ByteCode/InterpBuiltin.cpp
@@ -3204,7 +3204,13 @@ bool InterpretBuiltin(InterpState &S, CodePtr OpPC, const CallExpr *Call,
   case Builtin::BI__builtin_ffs:
   case Builtin::BI__builtin_ffsl:
   case Builtin::BI__builtin_ffsll:
-    return interp__builtin_elementwise_int_unaryop(S, OpPC, Call, [](const APSInt& Val){ return APInt(Val.getBitWidth(), (Val.countTrailingZeros()==Val.getBitWidth()) ? 0u : (Val.countTrailingZeros()+1u)); });
+    return interp__builtin_elementwise_int_unaryop(
+        S, OpPC, Call, [](const APSInt &Val) {
+          return APInt(Val.getBitWidth(),
+                       (Val.countTrailingZeros() == Val.getBitWidth())
+                           ? 0u
+                           : (Val.countTrailingZeros() + 1u));
+        });
 
   case Builtin::BIaddressof:
   case Builtin::BI__addressof:

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https://github.com/llvm/llvm-project/pull/162346