[clang] [clang-tools-extra] [Clang] Make the SizeType, SignedSizeType and PtrdiffType be named sugar types instead of built-in types (PR #143653)

[Matheus Izvekov via cfe-commits]

================
@@ -5622,3 +5622,15 @@ HLSLAttributedResourceType::findHandleTypeOnResource(const Type *RT) {
   }
   return nullptr;
 }
+
+StringRef PredefinedSugarType::getName() const {
+  switch (getKind()) {
+  case Kind::SizeT:
+    return "__size_t";
+  case Kind::SignedSizeT:
+    return "__signed_size_t";
+  case Kind::PtrdiffT:
+    return "__ptrdiff_t";
+  }
+  llvm_unreachable("unexpected kind");
+}
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mizvekov wrote:

Missing newline at EOF.

https://github.com/llvm/llvm-project/pull/143653