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1 //===--- CGTemporaries.cpp - Emit LLVM Code for C++ temporaries -----------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This contains code dealing with C++ code generation of temporaries
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "CodeGenFunction.h"
15 using namespace clang;
16 using namespace CodeGen;
17
18 namespace {
19   struct DestroyTemporary : EHScopeStack::Cleanup {
20     const CXXDestructorDecl *dtor;
21     llvm::Value *addr;
22     DestroyTemporary(const CXXDestructorDecl *dtor, llvm::Value *addr)
23       : dtor(dtor), addr(addr) {}
24     void Emit(CodeGenFunction &CGF, Flags flags) {
25       CGF.EmitCXXDestructorCall(dtor, Dtor_Complete, /*ForVirtualBase=*/false,
26                                 addr);
27     }
28   };
29 }
30
31 /// Emits all the code to cause the given temporary to be cleaned up.
32 void CodeGenFunction::EmitCXXTemporary(const CXXTemporary *Temporary,
33                                        llvm::Value *Ptr) {
34   pushFullExprCleanup<DestroyTemporary>(NormalAndEHCleanup,
35                                         Temporary->getDestructor(),
36                                         Ptr);
37 }
38
39 RValue
40 CodeGenFunction::EmitExprWithCleanups(const ExprWithCleanups *E,
41                                       AggValueSlot Slot) {
42   RunCleanupsScope Scope(*this);
43   return EmitAnyExpr(E->getSubExpr(), Slot);
44 }
45
46 LValue CodeGenFunction::EmitExprWithCleanupsLValue(const ExprWithCleanups *E) {
47   RunCleanupsScope Scope(*this);
48   return EmitLValue(E->getSubExpr());
49 }