push_back() loop -> append() for random access iterators.

append will resize the vector to the optimal size. No functional change
intended.

llvm-svn: 239607

clang/include/clang/AST/CommentParser.h

@@ -75,11 +75,7 @@ class Parser {
       return;
 
     MoreLATokens.push_back(Tok);
-    for (const Token *I = &Toks.back(),
-         *B = &Toks.front();
-         I != B; --I) {
-      MoreLATokens.push_back(*I);
-    }
+    MoreLATokens.append(Toks.rbegin(), std::prev(Toks.rend()));
 
     Tok = Toks[0];
   }

clang/include/clang/AST/DataRecursiveASTVisitor.h

@@ -531,10 +531,7 @@ bool RecursiveASTVisitor<Derived>::TraverseStmt(Stmt *S) {
       }
     }
 
-    for (SmallVectorImpl<Stmt *>::reverse_iterator RI = StmtsToEnqueue.rbegin(),
-                                                   RE = StmtsToEnqueue.rend();
-         RI != RE; ++RI)
-      Queue.push_back(*RI);
+    Queue.append(StmtsToEnqueue.rbegin(), StmtsToEnqueue.rend());
   }
 
   return true;

clang/include/clang/Lex/Preprocessor.h

@@ -455,8 +455,9 @@ class Preprocessor : public RefCountedBase<Preprocessor> {
 
     void overrideActiveModuleMacros(Preprocessor &PP, IdentifierInfo *II) {
       if (auto *Info = getModuleInfo(PP, II)) {
-        for (auto *Active : Info->ActiveModuleMacros)
-          Info->OverriddenMacros.push_back(Active);
+        Info->OverriddenMacros.insert(Info->OverriddenMacros.end(),
+                                      Info->ActiveModuleMacros.begin(),
+                                      Info->ActiveModuleMacros.end());
         Info->ActiveModuleMacros.clear();
         Info->IsAmbiguous = false;
       }

clang/lib/Basic/Diagnostic.cpp

@@ -321,18 +321,10 @@ void DiagnosticsEngine::Report(const StoredDiagnostic &storedDiag) {
   NumDiagArgs = 0;
 
   DiagRanges.clear();
-  DiagRanges.reserve(storedDiag.range_size());
-  for (StoredDiagnostic::range_iterator
-         RI = storedDiag.range_begin(),
-         RE = storedDiag.range_end(); RI != RE; ++RI)
-    DiagRanges.push_back(*RI);
+  DiagRanges.append(storedDiag.range_begin(), storedDiag.range_end());
 
   DiagFixItHints.clear();
-  DiagFixItHints.reserve(storedDiag.fixit_size());
-  for (StoredDiagnostic::fixit_iterator
-         FI = storedDiag.fixit_begin(),
-         FE = storedDiag.fixit_end(); FI != FE; ++FI)
-    DiagFixItHints.push_back(*FI);
+  DiagFixItHints.append(storedDiag.fixit_begin(), storedDiag.fixit_end());
 
   assert(Client && "DiagnosticConsumer not set!");
   Level DiagLevel = storedDiag.getLevel();

clang/lib/CodeGen/CGObjC.cpp

@@ -2996,13 +2996,9 @@ CodeGenFunction::GenerateObjCAtomicGetterCopyHelperFunction(
   
   SmallVector<Expr*, 4> ConstructorArgs;
   ConstructorArgs.push_back(&SRC);
-  CXXConstructExpr::arg_iterator A = CXXConstExpr->arg_begin();
-  ++A;
-  
-  for (CXXConstructExpr::arg_iterator AEnd = CXXConstExpr->arg_end();
-       A != AEnd; ++A)
-    ConstructorArgs.push_back(*A);
-  
+  ConstructorArgs.append(std::next(CXXConstExpr->arg_begin()),
+                         CXXConstExpr->arg_end());
+
   CXXConstructExpr *TheCXXConstructExpr =
     CXXConstructExpr::Create(C, Ty, SourceLocation(),
                              CXXConstExpr->getConstructor(),

clang/lib/Sema/Sema.cpp

@@ -722,11 +722,7 @@ void Sema::ActOnEndOfTranslationUnit() {
         ModMap.resolveConflicts(Mod, /*Complain=*/false);
 
         // Queue the submodules, so their exports will also be resolved.
-        for (Module::submodule_iterator Sub = Mod->submodule_begin(),
-                                     SubEnd = Mod->submodule_end();
-             Sub != SubEnd; ++Sub) {
-          Stack.push_back(*Sub);
-        }
+        Stack.append(Mod->submodule_begin(), Mod->submodule_end());
       }
     }
 

clang/lib/Serialization/ASTWriterDecl.cpp

@@ -190,8 +190,7 @@ namespace clang {
         assert(D->isCanonicalDecl() && "non-canonical decl in set");
         Writer.AddDeclRef(D, Record);
       }
-      for (DeclID ID : LazySpecializations)
-        Record.push_back(ID);
+      Record.append(LazySpecializations.begin(), LazySpecializations.end());
     }
   };
 }

clang/tools/libclang/ARCMigrate.cpp

@@ -101,9 +101,7 @@ CXRemapping clang_getRemappingsFromFileList(const char **filePaths,
   }
 
   TextDiagnosticBuffer diagBuffer;
-  SmallVector<StringRef, 32> Files;
-  for (unsigned i = 0; i != numFiles; ++i)
-    Files.push_back(filePaths[i]);
+  SmallVector<StringRef, 32> Files(filePaths, filePaths + numFiles);
 
   bool err = arcmt::getFileRemappingsFromFileList(remap->Vec, Files,
                                                   &diagBuffer);