llvm-project/clang/test/CodeGenCXX/copy-constructor-elim.cpp

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587 B
C++

// RUN: clang-cc -emit-llvm -o %t %s
// RUN: grep "_ZN1CC1ERK1C" %t | count 0
// RUN: grep "_ZN1SC1ERK1S" %t | count 0
extern "C" int printf(...);
struct C {
C() : iC(6) {printf("C()\n"); }
C(const C& c) { printf("C(const C& c)\n"); }
int iC;
};
C foo() {
return C();
};
class X { // ...
public:
X(int) {}
X(const X&, int i = 1, int j = 2, C c = foo()) {
printf("X(const X&, %d, %d, %d)\n", i, j, c.iC);
}
};
struct S {
S();
};
S::S() { printf("S()\n"); }
void Call(S) {};
int main() {
X a(1);
X b(a, 2);
X c = b;
X d(a, 5, 6);
S s;
Call(s);
}