[clang] [clang][modules] Shrink the size of `Module::Headers` (PR #113395)

[via cfe-commits]

================
@@ -271,8 +271,22 @@ class alignas(8) Module {
     DirectoryEntryRef Entry;
   };
 
-  /// The headers that are part of this module.
-  SmallVector<Header, 2> Headers[5];
+private:
+  unsigned HeaderKindBeginIndex[6] = {};
+  SmallVector<Header, 2> HeadersStorage;
+
+public:
+  ArrayRef<Header> getHeaders(HeaderKind HK) const {
+    auto BeginIt = HeadersStorage.begin() + HeaderKindBeginIndex[HK];
----------------
cor3ntin wrote:

I think we should assert that `HK is < NumHeaderKinds`

https://github.com/llvm/llvm-project/pull/113395
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits