[clang] [X86] Add MMX/SSE/AVX PHADD/SUB & HADDPS/D intrinsics to be used in constexpr (PR #156822)

[Simon Pilgrim via cfe-commits]

================
@@ -12192,67 +12332,71 @@ bool VectorExprEvaluator::VisitShuffleVectorExpr(const ShuffleVectorExpr *E) {
 
 namespace {
   class ArrayExprEvaluator
-  : public ExprEvaluatorBase<ArrayExprEvaluator> {
-    const LValue &This;
-    APValue &Result;
-  public:
-
-    ArrayExprEvaluator(EvalInfo &Info, const LValue &This, APValue &Result)
-      : ExprEvaluatorBaseTy(Info), This(This), Result(Result) {}
-
-    bool Success(const APValue &V, const Expr *E) {
-      assert(V.isArray() && "expected array");
-      Result = V;
-      return true;
-    }
-
-    bool ZeroInitialization(const Expr *E) {
-      const ConstantArrayType *CAT =
-          Info.Ctx.getAsConstantArrayType(E->getType());
-      if (!CAT) {
-        if (E->getType()->isIncompleteArrayType()) {
-          // We can be asked to zero-initialize a flexible array member; this
-          // is represented as an ImplicitValueInitExpr of incomplete array
-          // type. In this case, the array has zero elements.
-          Result = APValue(APValue::UninitArray(), 0, 0);
-          return true;
-        }
-        // FIXME: We could handle VLAs here.
-        return Error(E);
-      }
-
-      Result = APValue(APValue::UninitArray(), 0, CAT->getZExtSize());
-      if (!Result.hasArrayFiller())
-        return true;
-
-      // Zero-initialize all elements.
-      LValue Subobject = This;
-      Subobject.addArray(Info, E, CAT);
-      ImplicitValueInitExpr VIE(CAT->getElementType());
-      return EvaluateInPlace(Result.getArrayFiller(), Info, Subobject, &VIE);
-    }
-
-    bool VisitCallExpr(const CallExpr *E) {
-      return handleCallExpr(E, Result, &This);
-    }
-    bool VisitInitListExpr(const InitListExpr *E,
-                           QualType AllocType = QualType());
-    bool VisitArrayInitLoopExpr(const ArrayInitLoopExpr *E);
-    bool VisitCXXConstructExpr(const CXXConstructExpr *E);
-    bool VisitCXXConstructExpr(const CXXConstructExpr *E,
-                               const LValue &Subobject,
-                               APValue *Value, QualType Type);
-    bool VisitStringLiteral(const StringLiteral *E,
-                            QualType AllocType = QualType()) {
-      expandStringLiteral(Info, E, Result, AllocType);
-      return true;
-    }
-    bool VisitCXXParenListInitExpr(const CXXParenListInitExpr *E);
-    bool VisitCXXParenListOrInitListExpr(const Expr *ExprToVisit,
-                                         ArrayRef<Expr *> Args,
-                                         const Expr *ArrayFiller,
-                                         QualType AllocType = QualType());
-  };
+  :
----------------
RKSimon wrote:

(style) don't touch lines not affected by a patch - undo this clang-format change

https://github.com/llvm/llvm-project/pull/156822