Introduce paged vector (#66430)

The goal of the class is to be an (almost) drop in replacement for
SmallVector and std::vector when those are presized and filled later, as
it happens in SourceManager and ASTReader.

By doing so, sparsely accessed PagedVector can profit from reduced 
memory footprint.

1 files changed, 5 insertions, 5 deletions

diff --git a/clang/lib/Basic/SourceManager.cpp b/clang/lib/Basic/SourceManager.cpp
index f1a81de..3066cc5 100644
--- a/clang/lib/Basic/SourceManager.cpp
+++ b/clang/lib/Basic/SourceManager.cpp
@@ -2343,11 +2343,11 @@ SourceManager::MemoryBufferSizes SourceManager::getMemoryBufferSizes() const {
 }
 
 size_t SourceManager::getDataStructureSizes() const {
-  size_t size = llvm::capacity_in_bytes(MemBufferInfos)
-    + llvm::capacity_in_bytes(LocalSLocEntryTable)
-    + llvm::capacity_in_bytes(LoadedSLocEntryTable)
-    + llvm::capacity_in_bytes(SLocEntryLoaded)
-    + llvm::capacity_in_bytes(FileInfos);
+  size_t size = llvm::capacity_in_bytes(MemBufferInfos) +
+                llvm::capacity_in_bytes(LocalSLocEntryTable) +
+                llvm::capacity_in_bytes(LoadedSLocEntryTable) +
+                llvm::capacity_in_bytes(SLocEntryLoaded) +
+                llvm::capacity_in_bytes(FileInfos);
 
   if (OverriddenFilesInfo)
     size += llvm::capacity_in_bytes(OverriddenFilesInfo->OverriddenFiles);