// RUN: %clang_cc1 -no-enable-noundef-analysis -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
// Basic base class test.
struct f0_s0 { unsigned a; };
struct f0_s1 : public f0_s0 { void *b; };
// CHECK-LABEL: define{{.*}} void @_Z2f05f0_s1(i32 %a0.coerce0, ptr %a0.coerce1)
void f0(f0_s1 a0) { }
// Check with two eight-bytes in base class.
struct f1_s0 { unsigned a; unsigned b; float c; };
struct f1_s1 : public f1_s0 { float d;};
// CHECK-LABEL: define{{.*}} void @_Z2f15f1_s1(i64 %a0.coerce0, <2 x float> %a0.coerce1)
void f1(f1_s1 a0) { }
// Check with two eight-bytes in base class and merge.
struct f2_s0 { unsigned a; unsigned b; float c; };
struct f2_s1 : public f2_s0 { char d;};
// CHECK-LABEL: define{{.*}} void @_Z2f25f2_s1(i64 %a0.coerce0, i64 %a0.coerce1)
void f2(f2_s1 a0) { }
// PR5831
// CHECK-LABEL: define{{.*}} void @_Z2f34s3_1(i64 %x.coerce)
struct s3_0 {};
struct s3_1 { struct s3_0 a; long b; };
void f3(struct s3_1 x) {}
// CHECK-LABEL: define{{.*}} i64 @_Z4f4_0M2s4i(i64 %a)
// CHECK: define {{.*}} @_Z4f4_1M2s4FivE(i64 %a.coerce0, i64 %a.coerce1)
struct s4 {};
typedef int s4::* s4_mdp;
typedef int (s4::*s4_mfp)();
s4_mdp f4_0(s4_mdp a) { return a; }
s4_mfp f4_1(s4_mfp a) { return a; }
// A struct with <= one eightbyte before a member data pointer should still
// be allowed in registers.
// CHECK-LABEL: define{{.*}} void @{{.*}}f_struct_with_mdp{{.*}}(ptr %a.coerce0, i64 %a.coerce1)
struct struct_with_mdp { char *a; s4_mdp b; };
void f_struct_with_mdp(struct_with_mdp a) { (void)a; }
// A struct with anything before a member function will be too big and
// goes in memory.
// CHECK-LABEL: define{{.*}} void @{{.*}}f_struct_with_mfp_0{{.*}}(ptr byval(%struct{{.*}}) align 8 %a)
struct struct_with_mfp_0 { char a; s4_mfp b; };
void f_struct_with_mfp_0(struct_with_mfp_0 a) { (void)a; }
// CHECK-LABEL: define{{.*}} void @{{.*}}f_struct_with_mfp_1{{.*}}(ptr byval(%struct{{.*}}) align 8 %a)
struct struct_with_mfp_1 { void *a; s4_mfp b; };
void f_struct_with_mfp_1(struct_with_mfp_1 a) { (void)a; }
namespace PR7523 {
struct StringRef {
char *a;
};
void AddKeyword(StringRef, int x);
void foo() {
// CHECK-LABEL: define{{.*}} void @_ZN6PR75233fooEv()
// CHECK: call void @_ZN6PR752310AddKeywordENS_9StringRefEi(ptr {{.*}}, i32 4)
AddKeyword(StringRef(), 4);
}
}
namespace PR7742 {
struct s2 {
float a[2];
};
struct c2 : public s2 {};
// CHECK-LABEL: define{{.*}} <2 x float> @_ZN6PR77423fooEPNS_2c2E(ptr %P)
c2 foo(c2 *P) {
return c2();
}
}
namespace PR5179 {
struct B {};
struct B1 : B {
int* pa;
};
struct B2 : B {
B1 b1;
};
// CHECK-LABEL: define{{.*}} ptr @_ZN6PR51793barENS_2B2E(ptr %b2.coerce)
const void *bar(B2 b2) {
return b2.b1.pa;
}
}
namespace test5 {
struct Xbase { };
struct Empty { };
struct Y;
struct X : public Xbase {
Empty empty;
Y f();
};
struct Y : public X {
Empty empty;
};
X getX();
int takeY(const Y&, int y);
void g() {
// The temporary for the X object needs to have a defined address when
// passed into X::f as 'this'.
takeY(getX().f(), 42);
}
// CHECK: void @_ZN5test51gEv()
// CHECK: alloca %"struct.test5::Y"
// CHECK: alloca %"struct.test5::X"
// CHECK: alloca %"struct.test5::Y"
}
namespace test6 {
struct outer {
int x;
struct epsilon_matcher {} e;
int f;
};
int test(outer x) {
return x.x + x.f;
}
// CHECK-LABEL: define{{.*}} i32 @_ZN5test64testENS_5outerE(i64 %x.coerce0, i32 %x.coerce1)
}
namespace test7 {
struct StringRef {char* ptr; long len; };
class A { public: ~A(); };
A x(A, A, long, long, StringRef) { return A(); }
// Check that the StringRef is passed byval instead of expanded
// (which would split it between registers and memory).
// CHECK: define{{.*}} void @_ZN5test71xENS_1AES0_llNS_9StringRefE({{.*}} byval({{.*}}) align 8 {{%.*}})
// And a couple extra related tests:
A y(A, long double, long, long, StringRef) { return A(); }
// CHECK: define{{.*}} void @_ZN5test71yENS_1AEellNS_9StringRefE({{.*}} ptr
struct StringDouble {char * ptr; double d;};
A z(A, A, A, A, A, StringDouble) { return A(); }
A zz(A, A, A, A, StringDouble) { return A(); }
// CHECK: define{{.*}} void @_ZN5test71zENS_1AES0_S0_S0_S0_NS_12StringDoubleE({{.*}} byval({{.*}}) align 8 {{%.*}})
// CHECK: define{{.*}} void @_ZN5test72zzENS_1AES0_S0_S0_NS_12StringDoubleE({{.*}} ptr
}
namespace test8 {
// CHECK: declare void @_ZN5test83fooENS_1BE(ptr byval(%"class.test8::B") align 8)
class A {
char big[17];
};
class B : public A {};
void foo(B b);
void bar() {
B b;
foo(b);
}
}
// PR4242
namespace test9 {
// Large enough to be passed indirectly.
struct S { void *data[3]; };
struct T { void *data[2]; };
// CHECK: define{{.*}} void @_ZN5test93fooEPNS_1SEPNS_1TE(ptr %0, ptr %1)
void foo(S*, T*) {}
// CHECK: define{{.*}} void @_ZN5test91aEiiiiNS_1TEPv(ptr dead_on_unwind noalias writable sret([[S:%.*]]) align 8 {{%.*}}, i32 %0, i32 %1, i32 %2, i32 %3, ptr byval([[T:%.*]]) align 8 %4, ptr %5)
S a(int, int, int, int, T, void*) {
return S();
}
// CHECK: define{{.*}} ptr @_ZN5test91bEPNS_1SEiiiiNS_1TEPv(ptr {{%.*}}, i32 %0, i32 %1, i32 %2, i32 %3, ptr byval([[T]]) align 8 %4, ptr %5)
S* b(S* sret, int, int, int, int, T, void*) {
return sret;
}
// CHECK: define{{.*}} void @_ZN5test91cEiiiNS_1TEPv(ptr dead_on_unwind noalias writable sret([[S]]) align 8 {{%.*}}, i32 %0, i32 %1, i32 %2, ptr {{%.*}}, ptr {{%.*}}, ptr %3)
S c(int, int, int, T, void*) {
return S();
}
// CHECK: define{{.*}} ptr @_ZN5test91dEPNS_1SEiiiNS_1TEPv(ptr {{%.*}}, i32 %0, i32 %1, i32 %2, ptr {{%.*}}, ptr {{%.*}}, ptr %3)
S* d(S* sret, int, int, int, T, void*) {
return sret;
}
}
namespace test10 {
#pragma pack(1)
struct BasePacked {
char one;
short two;
};
#pragma pack()
struct DerivedPacked : public BasePacked {
int three;
};
// CHECK-LABEL: define{{.*}} i32 @_ZN6test1020FuncForDerivedPackedENS_13DerivedPackedE(ptr byval({{.*}}) align 8
int FuncForDerivedPacked(DerivedPacked d) {
return d.three;
}
}
namespace test11 {
union U {
float f1;
char __attribute__((__vector_size__(1))) f2;
};
int f(union U u) { return u.f2[1]; }
// CHECK-LABEL: define{{.*}} i32 @_ZN6test111fENS_1UE(i32
}
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