1 // RUN: %clang -S -target armv7l-unknown-linux-gnueabihf -emit-llvm -O1 -mllvm -disable-llvm-optzns -S %s -o - | FileCheck %s 2 3 // This test should not to generate llvm.lifetime.start/llvm.lifetime.end for 4 // f function because all temporary objects in this function are used for the 5 // final result 6 7 class S { 8 char *ptr; 9 unsigned int len; 10 }; 11 12 class T { 13 S left; 14 S right; 15 16 public: 17 T(const char s[]); 18 T(S); 19 20 T concat(const T &Suffix) const; 21 const char * str() const; 22 }; 23 24 const char * f(S s) 25 { 26 // CHECK: [[T1:%.*]] = alloca %class.T, align 4 27 // CHECK: [[T2:%.*]] = alloca %class.T, align 4 28 // CHECK: [[T3:%.*]] = alloca %class.T, align 4 29 // CHECK: [[T4:%.*]] = call %class.T* @_ZN1TC1EPKc(%class.T* [[T1]], i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i32 0, i32 0)) 30 // CHECK: [[T5:%.*]] = call %class.T* @_ZN1TC1E1S(%class.T* [[T2]], [2 x i32] %{{.*}}) 31 // CHECK: call void @_ZNK1T6concatERKS_(%class.T* sret [[T3]], %class.T* [[T1]], %class.T* dereferenceable(16) [[T2]]) 32 // CHECK: [[T6:%.*]] = call i8* @_ZNK1T3strEv(%class.T* [[T3]]) 33 // CHECK: ret i8* [[T6]] 34 35 return T("[").concat(T(s)).str(); 36 } 37