From 12dcc64eebf7aaffb71392fba74fcb69f35d3b2e Mon Sep 17 00:00:00 2001
From: Argyrios Kyrtzidis <akyrtzi@gmail.com>
Date: Fri, 4 May 2012 18:17:30 +0000
Subject: [PATCH] [PCH] Use DenseMap instead of std::map to keep track of
 SwitchCases.

Part of rdar://11353109.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156185 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/clang/Serialization/ASTReader.h | 5 +++--
 include/clang/Serialization/ASTWriter.h | 2 +-
 lib/Serialization/ASTReaderDecl.cpp     | 4 ++--
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/include/clang/Serialization/ASTReader.h b/include/clang/Serialization/ASTReader.h
index 11e237e5b5..d9af6d74af 100644
--- a/include/clang/Serialization/ASTReader.h
+++ b/include/clang/Serialization/ASTReader.h
@@ -591,13 +591,14 @@ private:
   /// indicates how many separate module file load operations have occurred.
   unsigned CurrentGeneration;
 
+  typedef llvm::DenseMap<unsigned, SwitchCase *> SwitchCaseMapTy;
   /// \brief Mapping from switch-case IDs in the chain to switch-case statements
   ///
   /// Statements usually don't have IDs, but switch cases need them, so that the
   /// switch statement can refer to them.
-  std::map<unsigned, SwitchCase *> SwitchCaseStmts;
+  SwitchCaseMapTy SwitchCaseStmts;
 
-  std::map<unsigned, SwitchCase *> *CurrSwitchCaseStmts;
+  SwitchCaseMapTy *CurrSwitchCaseStmts;
 
   /// \brief The number of stat() calls that hit/missed the stat
   /// cache.
diff --git a/include/clang/Serialization/ASTWriter.h b/include/clang/Serialization/ASTWriter.h
index e693f17593..16c3766f8f 100644
--- a/include/clang/Serialization/ASTWriter.h
+++ b/include/clang/Serialization/ASTWriter.h
@@ -337,7 +337,7 @@ private:
   SmallVector<Stmt *, 16> *CollectedStmts;
 
   /// \brief Mapping from SwitchCase statements to IDs.
-  std::map<SwitchCase *, unsigned> SwitchCaseIDs;
+  llvm::DenseMap<SwitchCase *, unsigned> SwitchCaseIDs;
 
   /// \brief The number of statements written to the AST file.
   unsigned NumStatements;
diff --git a/lib/Serialization/ASTReaderDecl.cpp b/lib/Serialization/ASTReaderDecl.cpp
index dc315f095c..1c5b658469 100644
--- a/lib/Serialization/ASTReaderDecl.cpp
+++ b/lib/Serialization/ASTReaderDecl.cpp
@@ -631,8 +631,8 @@ void ASTDeclReader::VisitObjCMethodDecl(ObjCMethodDecl *MD) {
     // In practice, this won't be executed (since method definitions
     // don't occur in header files).
     // Switch case IDs for this method body.
-    std::map<unsigned, SwitchCase *> SwitchCaseStmtsForObjCMethod;
-    SaveAndRestore<std::map<unsigned, SwitchCase *> *>
+    ASTReader::SwitchCaseMapTy SwitchCaseStmtsForObjCMethod;
+    SaveAndRestore<ASTReader::SwitchCaseMapTy *>
       SCFOM(Reader.CurrSwitchCaseStmts, &SwitchCaseStmtsForObjCMethod);
     MD->setBody(Reader.ReadStmt(F));
     MD->setSelfDecl(ReadDeclAs<ImplicitParamDecl>(Record, Idx));
-- 
2.40.0