From e894e09e704d760af47389c1a17927c8d848c2f8 Mon Sep 17 00:00:00 2001
From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Sat, 24 Mar 2012 18:22:12 +0000
Subject: [PATCH] Simplify some users of DenseMap::erase.

llvm-svn: 153389
---
 clang/lib/ARCMigrate/FileRemapper.cpp | 5 +----
 clang/lib/CodeGen/CGDebugInfo.cpp     | 5 +----
 clang/lib/CodeGen/CodeGenModule.cpp   | 5 +----
 clang/lib/Lex/PreprocessingRecord.cpp | 5 +----
 4 files changed, 4 insertions(+), 16 deletions(-)

diff --git a/clang/lib/ARCMigrate/FileRemapper.cpp b/clang/lib/ARCMigrate/FileRemapper.cpp
index 1e97c9eed523..474ce7dcbaf8 100644
--- a/clang/lib/ARCMigrate/FileRemapper.cpp
+++ b/clang/lib/ARCMigrate/FileRemapper.cpp
@@ -280,10 +280,7 @@ void FileRemapper::resetTarget(Target &targ) {
     delete oldmem;
   } else {
     const FileEntry *toFE = targ.get<const FileEntry *>();
-    llvm::DenseMap<const FileEntry *, const FileEntry *>::iterator
-      I = ToFromMappings.find(toFE);
-    if (I != ToFromMappings.end())
-      ToFromMappings.erase(I);
+    ToFromMappings.erase(toFE);
   }
 }
 
diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index 1e0eeb2122e6..90eb861d939f 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -1235,10 +1235,7 @@ llvm::DIType CGDebugInfo::CreateType(const RecordType *Ty) {
   }
 
   LexicalBlockStack.pop_back();
-  llvm::DenseMap<const Decl *, llvm::WeakVH>::iterator RI = 
-    RegionMap.find(Ty->getDecl());
-  if (RI != RegionMap.end())
-    RegionMap.erase(RI);
+  RegionMap.erase(Ty->getDecl());
 
   llvm::DIArray Elements = DBuilder.getOrCreateArray(EltTys);
   // FIXME: Magic numbers ahoy! These should be changed when we
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 5fdb427e27c9..1c8f5f65f93d 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -823,10 +823,7 @@ void CodeGenModule::EmitGlobal(GlobalDecl GD) {
       FD->getBody(InlineDefinition);
 
       StringRef MangledName = getMangledName(GD);
-      llvm::StringMap<GlobalDecl>::iterator DDI =
-          DeferredDecls.find(MangledName);
-      if (DDI != DeferredDecls.end())
-        DeferredDecls.erase(DDI);
+      DeferredDecls.erase(MangledName);
       EmitGlobalDefinition(InlineDefinition);
       return;
     }
diff --git a/clang/lib/Lex/PreprocessingRecord.cpp b/clang/lib/Lex/PreprocessingRecord.cpp
index b8e6152466ba..440e4780ca06 100644
--- a/clang/lib/Lex/PreprocessingRecord.cpp
+++ b/clang/lib/Lex/PreprocessingRecord.cpp
@@ -358,10 +358,7 @@ void PreprocessingRecord::MacroDefined(const Token &Id,
 
 void PreprocessingRecord::MacroUndefined(const Token &Id,
                                          const MacroInfo *MI) {
-  llvm::DenseMap<const MacroInfo *, PPEntityID>::iterator Pos
-    = MacroDefinitions.find(MI);
-  if (Pos != MacroDefinitions.end())
-    MacroDefinitions.erase(Pos);
+  MacroDefinitions.erase(MI);
 }
 
 void PreprocessingRecord::InclusionDirective(