From 3204b152b53e539304f9da2aff100876aeefa856 Mon Sep 17 00:00:00 2001 From: Benjamin Kramer Date: Fri, 29 May 2015 19:42:19 +0000 Subject: Replace push_back(Constructor(foo)) with emplace_back(foo) for non-trivial types If the type isn't trivially moveable emplace can skip a potentially expensive move. It also saves a couple of characters. Call sites were found with the ASTMatcher + some semi-automated cleanup. memberCallExpr( argumentCountIs(1), callee(methodDecl(hasName("push_back"))), on(hasType(recordDecl(has(namedDecl(hasName("emplace_back")))))), hasArgument(0, bindTemporaryExpr( hasType(recordDecl(hasNonTrivialDestructor())), has(constructExpr()))), unless(isInTemplateInstantiation())) No functional change intended. llvm-svn: 238601 --- clang/lib/CodeGen/CodeGenModule.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'clang/lib/CodeGen/CodeGenModule.cpp') diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp index e275466..8d69308 100644 --- a/clang/lib/CodeGen/CodeGenModule.cpp +++ b/clang/lib/CodeGen/CodeGenModule.cpp @@ -921,13 +921,13 @@ void CodeGenModule::SetFunctionAttributes(GlobalDecl GD, llvm::Function *F, void CodeGenModule::addUsedGlobal(llvm::GlobalValue *GV) { assert(!GV->isDeclaration() && "Only globals with definition can force usage."); - LLVMUsed.push_back(GV); + LLVMUsed.emplace_back(GV); } void CodeGenModule::addCompilerUsedGlobal(llvm::GlobalValue *GV) { assert(!GV->isDeclaration() && "Only globals with definition can force usage."); - LLVMCompilerUsed.push_back(GV); + LLVMCompilerUsed.emplace_back(GV); } static void emitUsed(CodeGenModule &CGM, StringRef Name, -- cgit v1.1