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 7class S { 8 char *ptr; 9 unsigned int len; 10}; 11 12class T { 13 S left; 14 S right; 15 16public: 17 T(const char s[]); 18 T(S); 19 20 T concat(const T &Suffix) const; 21 const char * str() const; 22}; 23 24const 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