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// RUN: %clang -S -emit-llvm -O1 -mllvm -disable-llvm-optzns -S %s -o - | FileCheck %s
// This test should not to generate llvm.lifetime.start/llvm.lifetime.end for
// f function because all temporary objects in this function are used for the
// final result
class S {
char *ptr;
unsigned int len;
};
class T {
S left;
S right;
public:
T(const char s[]);
T(S);
T concat(const T &Suffix) const;
const char * str() const;
};
const char * f(S s)
{
// CHECK: [[T1:%.*]] = alloca %class.T, align 4
// CHECK: [[T2:%.*]] = alloca %class.T, align 4
// CHECK: [[T3:%.*]] = alloca %class.S, align 4
// CHECK: [[T4:%.*]] = alloca %class.T, align 4
// CHECK: [[T5:%.*]] = call x86_thiscallcc %class.T* @"\01??0T@@QAE@QBD@Z"
// CHECK: [[T6:%.*]] = bitcast %class.S* [[T3]] to i8*
// CHECK: [[T7:%.*]] = bitcast %class.S* %s to i8*
// CHECK: call void @llvm.memcpy.p0i8.p0i8.i32
// CHECK: [[T8:%.*]] = call x86_thiscallcc %class.T* @"\01??0T@@QAE@VS@@@Z"
// CHECK: call x86_thiscallcc void @"\01?concat@T@@QBE?AV1@ABV1@@Z"
// CHECK: [[T9:%.*]] = call x86_thiscallcc i8* @"\01?str@T@@QBEPBDXZ"(%class.T* [[T4]])
return T("[").concat(T(s)).str();
}
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