[clang][NFC] Fix BuildExtVectorType parameter name (#166208)

Fix the parameter name in the BuildExtVectorType function, also updating
the code style to be consistent with BuildVectorType

Discovered in #166055

Author: AmrDeveloper

clang/lib/Sema/SemaType.cpp

@@ -2399,7 +2399,7 @@ QualType Sema::BuildVectorType(QualType CurType, Expr *SizeExpr,
                                VectorKind::Generic);
 }
 
-QualType Sema::BuildExtVectorType(QualType T, Expr *ArraySize,
+QualType Sema::BuildExtVectorType(QualType T, Expr *SizeExpr,
                                   SourceLocation AttrLoc) {
   // Unlike gcc's vector_size attribute, we do not allow vectors to be defined
   // in conjunction with complex types (pointers, arrays, functions, etc.).
@@ -2422,40 +2422,40 @@ QualType Sema::BuildExtVectorType(QualType T, Expr *ArraySize,
       BIT && CheckBitIntElementType(*this, AttrLoc, BIT))
     return QualType();
 
-  if (!ArraySize->isTypeDependent() && !ArraySize->isValueDependent()) {
-    std::optional<llvm::APSInt> vecSize =
-        ArraySize->getIntegerConstantExpr(Context);
-    if (!vecSize) {
+  if (!SizeExpr->isTypeDependent() && !SizeExpr->isValueDependent()) {
+    std::optional<llvm::APSInt> VecSize =
+        SizeExpr->getIntegerConstantExpr(Context);
+    if (!VecSize) {
       Diag(AttrLoc, diag::err_attribute_argument_type)
-        << "ext_vector_type" << AANT_ArgumentIntegerConstant
-        << ArraySize->getSourceRange();
+          << "ext_vector_type" << AANT_ArgumentIntegerConstant
+          << SizeExpr->getSourceRange();
       return QualType();
     }
 
-    if (vecSize->isNegative()) {
-      Diag(ArraySize->getExprLoc(), diag::err_attribute_vec_negative_size);
+    if (VecSize->isNegative()) {
+      Diag(SizeExpr->getExprLoc(), diag::err_attribute_vec_negative_size);
       return QualType();
     }
 
-    if (!vecSize->isIntN(32)) {
+    if (!VecSize->isIntN(32)) {
       Diag(AttrLoc, diag::err_attribute_size_too_large)
-          << ArraySize->getSourceRange() << "vector";
+          << SizeExpr->getSourceRange() << "vector";
       return QualType();
     }
     // Unlike gcc's vector_size attribute, the size is specified as the
     // number of elements, not the number of bytes.
-    unsigned vectorSize = static_cast<unsigned>(vecSize->getZExtValue());
+    unsigned VectorSize = static_cast<unsigned>(VecSize->getZExtValue());
 
-    if (vectorSize == 0) {
+    if (VectorSize == 0) {
       Diag(AttrLoc, diag::err_attribute_zero_size)
-          << ArraySize->getSourceRange() << "vector";
+          << SizeExpr->getSourceRange() << "vector";
       return QualType();
     }
 
-    return Context.getExtVectorType(T, vectorSize);
+    return Context.getExtVectorType(T, VectorSize);
   }
 
-  return Context.getDependentSizedExtVectorType(T, ArraySize, AttrLoc);
+  return Context.getDependentSizedExtVectorType(T, SizeExpr, AttrLoc);
 }
 
 QualType Sema::BuildMatrixType(QualType ElementTy, Expr *NumRows, Expr *NumCols,