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| author | Argyrios Kyrtzidis <akyrtzi@gmail.com> | 2011-10-21 23:02:28 +0000 |
|---|---|---|
| committer | Argyrios Kyrtzidis <akyrtzi@gmail.com> | 2011-10-21 23:02:28 +0000 |
| commit | e6f0868a55aba2613e2d5dba3348aaf1064e6ddb (patch) | |
| tree | e01e03694fd4e56ce69c47309e6f3228a8bf8827 /include/clang/Serialization/ASTWriter.h | |
| parent | 21f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4 (diff) | |
[PCH] When serializing Stmts, keep track of when sub statements are referenced again and
in such a case just write out a reference of a previously serialized Stmt, instead
of serializing it all over again.
This saves memory + space + [de]serializing time, and avoids blowing up memory
with pathological cases. rdar://10293911
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142696 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/clang/Serialization/ASTWriter.h')
| -rw-r--r-- | include/clang/Serialization/ASTWriter.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/clang/Serialization/ASTWriter.h b/include/clang/Serialization/ASTWriter.h index 7a49e485f2..7d89ce7db0 100644 --- a/include/clang/Serialization/ASTWriter.h +++ b/include/clang/Serialization/ASTWriter.h @@ -24,6 +24,7 @@ #include "llvm/ADT/SmallPtrSet.h" #include "llvm/ADT/SmallVector.h" #include "llvm/ADT/DenseMap.h" +#include "llvm/ADT/DenseSet.h" #include "llvm/Bitcode/BitstreamWriter.h" #include <map> #include <queue> @@ -331,7 +332,9 @@ private: SmallVector<QueuedCXXBaseSpecifiers, 2> CXXBaseSpecifiersToWrite; /// \brief Write the given subexpression to the bitstream. - void WriteSubStmt(Stmt *S); + void WriteSubStmt(Stmt *S, + llvm::DenseMap<Stmt *, uint64_t> &SubStmtEntries, + llvm::DenseSet<Stmt *> &ParentStmts); void WriteBlockInfoBlock(); void WriteMetadata(ASTContext &Context, StringRef isysroot, |