xref: /llvm-project-15.0.7/clang/test/CodeGenCXX/conversion-function.cpp (revision 3df87678)

// RUN: clang-cc -triple x86_64-apple-darwin -std=c++0x -S %s -o %t-64.s &&
// RUN: FileCheck -check-prefix LP64 --input-file=%t-64.s %s &&
// RUN: clang-cc -triple i386-apple-darwin -std=c++0x -S %s -o %t-32.s &&
// RUN: FileCheck -check-prefix LP32 --input-file=%t-32.s %s &&
// RUN: true

extern "C" int printf(...);
struct S {
	operator int();
};

S::operator int() {
	return 10;
}


class X { // ...
  public: operator int() { printf("operator int()\n"); return iX; }
  public: operator float() { printf("operator float()\n"); return fX; }
  X() : iX(100), fX(1.234)  {}
  int iX;
  float fX;
};

X x;

struct Z {
    operator X() { printf("perator X()\n"); x.iX += iZ; x.fX += fZ; return x; }
    int iZ;
    float fZ;
    Z() : iZ(1), fZ(1.00) {}
};

Z z;

class Y { // ...
  public: operator Z(){printf("perator Z()\n"); return z; }
};

Y y;

int main() {
    int c = X(Z(y)); // OK: y.operator Z().operator X().operator int()
    printf("c = %d\n", c);
    float f = X(Z(y));
    printf("f = %f\n", f);
    int i = x;
    printf("i = %d float = %f\n", i, float(x));
    i = int(X(Z(y)));
    f = float(X(Z(y)));
    printf("i = %d float = %f\n", i,f);
    f = (float)x;
    i = (int)x;
    printf("i = %d float = %f\n", i,f);

    int d = (X)((Z)y);
    printf("d = %d\n", d);

    int e = (int)((X)((Z)y));
    printf("e = %d\n", e);
}
// CHECK-LP64: .globl  __ZN1ScviEv
// CHECK-LP64-NEXT: __ZN1ScviEv:
// CHECK-LP64: call	__ZN1Ycv1ZEv
// CHECK-LP64: call	__ZN1Zcv1XEv
// CHECK-LP64: call	__ZN1XcviEv
// CHECK-LP64: call	__ZN1XcvfEv

// CHECK-LP32: .globl  __ZN1ScviEv
// CHECK-LP32-NEXT: __ZN1ScviEv:
// CHECK-LP32: call	L__ZN1Ycv1ZEv
// CHECK-LP32: call	L__ZN1Zcv1XEv
// CHECK-LP32: call	L__ZN1XcviEv
// CHECK-LP32: call	L__ZN1XcvfEv