// RUN: %clang_cc1 -emit-llvm %s -o - -triple=i386-pc-linux | FileCheck -check-prefix LINUX %s
// RUN: %clang_cc1 -emit-llvm %s -o - -triple=i386-pc-win32 -mconstructor-aliases -fno-rtti | FileCheck -check-prefix WIN32 %s
// RUN: %clang_cc1 -emit-llvm %s -o - -triple=x86_64-pc-win32 -mconstructor-aliases -fno-rtti | FileCheck -check-prefix WIN64 %s
struct Empty {};
struct EmptyWithCtor {
EmptyWithCtor() {}
};
struct Small {
int x;
};
// This is a C++11 trivial and standard-layout struct but not a C++03 POD.
struct SmallCpp11NotCpp03Pod : Empty {
int x;
};
struct SmallWithCtor {
SmallWithCtor() {}
int x;
};
struct SmallWithDtor {
SmallWithDtor();
~SmallWithDtor();
int x;
};
struct SmallWithVftable {
int x;
virtual void foo();
};
struct Medium {
int x, y;
};
struct MediumWithCopyCtor {
MediumWithCopyCtor();
MediumWithCopyCtor(const struct MediumWithCopyCtor &);
int x, y;
};
struct Big {
int a, b, c, d, e, f;
};
struct BigWithDtor {
BigWithDtor();
~BigWithDtor();
int a, b, c, d, e, f;
};
// WIN32: declare void @"{{.*take_bools_and_chars.*}}"
// WIN32: (<{ i8, [3 x i8], i8, [3 x i8], %struct.SmallWithDtor,
// WIN32: i8, [3 x i8], i8, [3 x i8], i32, i8, [3 x i8] }>* inalloca)
void take_bools_and_chars(char a, char b, SmallWithDtor c, char d, bool e, int f, bool g);
void call_bools_and_chars() {
take_bools_and_chars('A', 'B', SmallWithDtor(), 'D', true, 13, false);
}
// Returning structs that fit into a register.
Small small_return() { return Small(); }
// LINUX-LABEL: define void @_Z12small_returnv(%struct.Small* noalias sret %agg.result)
// WIN32: define i32 @"\01?small_return@@YA?AUSmall@@XZ"()
// WIN64: define i32 @"\01?small_return@@YA?AUSmall@@XZ"()
Medium medium_return() { return Medium(); }
// LINUX-LABEL: define void @_Z13medium_returnv(%struct.Medium* noalias sret %agg.result)
// WIN32: define i64 @"\01?medium_return@@YA?AUMedium@@XZ"()
// WIN64: define i64 @"\01?medium_return@@YA?AUMedium@@XZ"()
// Returning structs that fit into a register but are not POD.
SmallCpp11NotCpp03Pod small_non_pod_return() { return SmallCpp11NotCpp03Pod(); }
// LINUX-LABEL: define void @_Z20small_non_pod_returnv(%struct.SmallCpp11NotCpp03Pod* noalias sret %agg.result)
// WIN32: define void @"\01?small_non_pod_return@@YA?AUSmallCpp11NotCpp03Pod@@XZ"(%struct.SmallCpp11NotCpp03Pod* noalias sret %agg.result)
// WIN64: define void @"\01?small_non_pod_return@@YA?AUSmallCpp11NotCpp03Pod@@XZ"(%struct.SmallCpp11NotCpp03Pod* noalias sret %agg.result)
SmallWithCtor small_with_ctor_return() { return SmallWithCtor(); }
// LINUX-LABEL: define void @_Z22small_with_ctor_returnv(%struct.SmallWithCtor* noalias sret %agg.result)
// WIN32: define void @"\01?small_with_ctor_return@@YA?AUSmallWithCtor@@XZ"(%struct.SmallWithCtor* noalias sret %agg.result)
// WIN64: define void @"\01?small_with_ctor_return@@YA?AUSmallWithCtor@@XZ"(%struct.SmallWithCtor* noalias sret %agg.result)
SmallWithVftable small_with_vftable_return() { return SmallWithVftable(); }
// LINUX-LABEL: define void @_Z25small_with_vftable_returnv(%struct.SmallWithVftable* noalias sret %agg.result)
// WIN32: define void @"\01?small_with_vftable_return@@YA?AUSmallWithVftable@@XZ"(%struct.SmallWithVftable* noalias sret %agg.result)
// WIN64: define void @"\01?small_with_vftable_return@@YA?AUSmallWithVftable@@XZ"(%struct.SmallWithVftable* noalias sret %agg.result)
MediumWithCopyCtor medium_with_copy_ctor_return() { return MediumWithCopyCtor(); }
// LINUX-LABEL: define void @_Z28medium_with_copy_ctor_returnv(%struct.MediumWithCopyCtor* noalias sret %agg.result)
// WIN32: define void @"\01?medium_with_copy_ctor_return@@YA?AUMediumWithCopyCtor@@XZ"(%struct.MediumWithCopyCtor* noalias sret %agg.result)
// WIN64: define void @"\01?medium_with_copy_ctor_return@@YA?AUMediumWithCopyCtor@@XZ"(%struct.MediumWithCopyCtor* noalias sret %agg.result)
// Returning a large struct that doesn't fit into a register.
Big big_return() { return Big(); }
// LINUX-LABEL: define void @_Z10big_returnv(%struct.Big* noalias sret %agg.result)
// WIN32: define void @"\01?big_return@@YA?AUBig@@XZ"(%struct.Big* noalias sret %agg.result)
// WIN64: define void @"\01?big_return@@YA?AUBig@@XZ"(%struct.Big* noalias sret %agg.result)
void small_arg(Small s) {}
// LINUX-LABEL: define void @_Z9small_arg5Small(i32 %s.0)
// WIN32: define void @"\01?small_arg@@YAXUSmall@@@Z"(%struct.Small* byval align 4 %s)
// WIN64: define void @"\01?small_arg@@YAXUSmall@@@Z"(i32 %s.coerce)
void medium_arg(Medium s) {}
// LINUX-LABEL: define void @_Z10medium_arg6Medium(i32 %s.0, i32 %s.1)
// WIN32: define void @"\01?medium_arg@@YAXUMedium@@@Z"(%struct.Medium* byval align 4 %s)
// WIN64: define void @"\01?medium_arg@@YAXUMedium@@@Z"(i64 %s.coerce)
void small_arg_with_ctor(SmallWithCtor s) {}
// LINUX-LABEL: define void @_Z19small_arg_with_ctor13SmallWithCtor(%struct.SmallWithCtor* byval align 4 %s)
// WIN32: define void @"\01?small_arg_with_ctor@@YAXUSmallWithCtor@@@Z"(%struct.SmallWithCtor* byval align 4 %s)
// WIN64: define void @"\01?small_arg_with_ctor@@YAXUSmallWithCtor@@@Z"(i32 %s.coerce)
// Test that dtors are invoked in the callee.
void small_arg_with_dtor(SmallWithDtor s) {}
// WIN32: define void @"\01?small_arg_with_dtor@@YAXUSmallWithDtor@@@Z"(<{ %struct.SmallWithDtor }>* inalloca) {{.*}} {
// WIN32: call x86_thiscallcc void @"\01??1SmallWithDtor@@QAE@XZ"
// WIN32: }
// WIN64: define void @"\01?small_arg_with_dtor@@YAXUSmallWithDtor@@@Z"(i32 %s.coerce) {{.*}} {
// WIN64: call void @"\01??1SmallWithDtor@@QEAA@XZ"
// WIN64: }
void call_small_arg_with_dtor() {
small_arg_with_dtor(SmallWithDtor());
}
// The temporary is copied, so it's destroyed in the caller as well as the
// callee.
// WIN64-LABEL: define void @"\01?call_small_arg_with_dtor@@YAXXZ"()
// WIN64: call %struct.SmallWithDtor* @"\01??0SmallWithDtor@@QEAA@XZ"
// WIN64: call void @"\01?small_arg_with_dtor@@YAXUSmallWithDtor@@@Z"(i32 %{{.*}})
// WIN64: call void @"\01??1SmallWithDtor@@QEAA@XZ"
// WIN64: ret void
// Test that references aren't destroyed in the callee.
void ref_small_arg_with_dtor(const SmallWithDtor &s) { }
// WIN32: define void @"\01?ref_small_arg_with_dtor@@YAXABUSmallWithDtor@@@Z"(%struct.SmallWithDtor* dereferenceable({{[0-9]+}}) %s) {{.*}} {
// WIN32-NOT: call x86_thiscallcc void @"\01??1SmallWithDtor@@QAE@XZ"
// WIN32: }
// WIN64-LABEL: define void @"\01?ref_small_arg_with_dtor@@YAXAEBUSmallWithDtor@@@Z"(%struct.SmallWithDtor* dereferenceable({{[0-9]+}}) %s)
void big_arg_with_dtor(BigWithDtor s) {}
// WIN64-LABEL: define void @"\01?big_arg_with_dtor@@YAXUBigWithDtor@@@Z"(%struct.BigWithDtor* %s)
// WIN64: call void @"\01??1BigWithDtor@@QEAA@XZ"
// WIN64: }
void call_big_arg_with_dtor() {
big_arg_with_dtor(BigWithDtor());
}
// We can elide the copy of the temporary in the caller, because this object is
// larger than 8 bytes and is passed indirectly.
// WIN64-LABEL: define void @"\01?call_big_arg_with_dtor@@YAXXZ"()
// WIN64: call %struct.BigWithDtor* @"\01??0BigWithDtor@@QEAA@XZ"
// WIN64: call void @"\01?big_arg_with_dtor@@YAXUBigWithDtor@@@Z"(%struct.BigWithDtor* %{{.*}})
// WIN64-NOT: call void @"\01??1BigWithDtor@@QEAA@XZ"
// WIN64: ret void
// Test that temporaries passed by reference are destroyed in the caller.
void temporary_ref_with_dtor() {
ref_small_arg_with_dtor(SmallWithDtor());
}
// WIN32: define void @"\01?temporary_ref_with_dtor@@YAXXZ"() {{.*}} {
// WIN32: call x86_thiscallcc %struct.SmallWithDtor* @"\01??0SmallWithDtor@@QAE@XZ"
// WIN32: call void @"\01?ref_small_arg_with_dtor@@YAXABUSmallWithDtor@@@Z"
// WIN32: call x86_thiscallcc void @"\01??1SmallWithDtor@@QAE@XZ"
// WIN32: }
void takes_two_by_val_with_dtor(SmallWithDtor a, SmallWithDtor b);
void eh_cleanup_arg_with_dtor() {
takes_two_by_val_with_dtor(SmallWithDtor(), SmallWithDtor());
}
// When exceptions are off, we don't have any cleanups. See
// microsoft-abi-exceptions.cpp for these cleanups.
// WIN32: define void @"\01?eh_cleanup_arg_with_dtor@@YAXXZ"() {{.*}} {
// WIN32: call x86_thiscallcc %struct.SmallWithDtor* @"\01??0SmallWithDtor@@QAE@XZ"
// WIN32: call x86_thiscallcc %struct.SmallWithDtor* @"\01??0SmallWithDtor@@QAE@XZ"
// WIN32: call void @"\01?takes_two_by_val_with_dtor@@YAXUSmallWithDtor@@0@Z"
// WIN32-NOT: call x86_thiscallcc void @"\01??1SmallWithDtor@@QAE@XZ"
// WIN32: }
void small_arg_with_vftable(SmallWithVftable s) {}
// LINUX-LABEL: define void @_Z22small_arg_with_vftable16SmallWithVftable(%struct.SmallWithVftable* %s)
// WIN32: define void @"\01?small_arg_with_vftable@@YAXUSmallWithVftable@@@Z"(<{ %struct.SmallWithVftable }>* inalloca)
// WIN64: define void @"\01?small_arg_with_vftable@@YAXUSmallWithVftable@@@Z"(%struct.SmallWithVftable* %s)
void medium_arg_with_copy_ctor(MediumWithCopyCtor s) {}
// LINUX-LABEL: define void @_Z25medium_arg_with_copy_ctor18MediumWithCopyCtor(%struct.MediumWithCopyCtor* %s)
// WIN32: define void @"\01?medium_arg_with_copy_ctor@@YAXUMediumWithCopyCtor@@@Z"(<{ %struct.MediumWithCopyCtor }>* inalloca)
// WIN64: define void @"\01?medium_arg_with_copy_ctor@@YAXUMediumWithCopyCtor@@@Z"(%struct.MediumWithCopyCtor* %s)
void big_arg(Big s) {}
// LINUX-LABEL: define void @_Z7big_arg3Big(%struct.Big* byval align 4 %s)
// WIN32: define void @"\01?big_arg@@YAXUBig@@@Z"(%struct.Big* byval align 4 %s)
// WIN64: define void @"\01?big_arg@@YAXUBig@@@Z"(%struct.Big* %s)
class Class {
public:
Small thiscall_method_small() { return Small(); }
// LINUX: define {{.*}} void @_ZN5Class21thiscall_method_smallEv(%struct.Small* noalias sret %agg.result, %class.Class* %this)
// WIN32: define {{.*}} x86_thiscallcc void @"\01?thiscall_method_small@Class@@QAE?AUSmall@@XZ"(%class.Class* %this, %struct.Small* noalias sret %agg.result)
// WIN64: define linkonce_odr void @"\01?thiscall_method_small@Class@@QEAA?AUSmall@@XZ"(%class.Class* %this, %struct.Small* noalias sret %agg.result)
SmallWithCtor thiscall_method_small_with_ctor() { return SmallWithCtor(); }
// LINUX: define {{.*}} void @_ZN5Class31thiscall_method_small_with_ctorEv(%struct.SmallWithCtor* noalias sret %agg.result, %class.Class* %this)
// WIN32: define {{.*}} x86_thiscallcc void @"\01?thiscall_method_small_with_ctor@Class@@QAE?AUSmallWithCtor@@XZ"(%class.Class* %this, %struct.SmallWithCtor* noalias sret %agg.result)
// WIN64: define linkonce_odr void @"\01?thiscall_method_small_with_ctor@Class@@QEAA?AUSmallWithCtor@@XZ"(%class.Class* %this, %struct.SmallWithCtor* noalias sret %agg.result)
Small __cdecl cdecl_method_small() { return Small(); }
// LINUX: define {{.*}} void @_ZN5Class18cdecl_method_smallEv(%struct.Small* noalias sret %agg.result, %class.Class* %this)
// WIN32: define {{.*}} void @"\01?cdecl_method_small@Class@@QAA?AUSmall@@XZ"(%class.Class* %this, %struct.Small* noalias sret %agg.result)
// WIN64: define linkonce_odr void @"\01?cdecl_method_small@Class@@QEAA?AUSmall@@XZ"(%class.Class* %this, %struct.Small* noalias sret %agg.result)
Big __cdecl cdecl_method_big() { return Big(); }
// LINUX: define {{.*}} void @_ZN5Class16cdecl_method_bigEv(%struct.Big* noalias sret %agg.result, %class.Class* %this)
// WIN32: define {{.*}} void @"\01?cdecl_method_big@Class@@QAA?AUBig@@XZ"(%class.Class* %this, %struct.Big* noalias sret %agg.result)
// WIN64: define linkonce_odr void @"\01?cdecl_method_big@Class@@QEAA?AUBig@@XZ"(%class.Class* %this, %struct.Big* noalias sret %agg.result)
void thiscall_method_arg(Empty s) {}
// LINUX: define {{.*}} void @_ZN5Class19thiscall_method_argE5Empty(%class.Class* %this)
// WIN32: define {{.*}} void @"\01?thiscall_method_arg@Class@@QAEXUEmpty@@@Z"(%class.Class* %this, %struct.Empty* byval align 4 %s)
// WIN64: define linkonce_odr void @"\01?thiscall_method_arg@Class@@QEAAXUEmpty@@@Z"(%class.Class* %this, i8 %s.coerce)
void thiscall_method_arg(EmptyWithCtor s) {}
// LINUX: define {{.*}} void @_ZN5Class19thiscall_method_argE13EmptyWithCtor(%class.Class* %this)
// WIN32: define {{.*}} void @"\01?thiscall_method_arg@Class@@QAEXUEmptyWithCtor@@@Z"(%class.Class* %this, %struct.EmptyWithCtor* byval align 4 %s)
// WIN64: define linkonce_odr void @"\01?thiscall_method_arg@Class@@QEAAXUEmptyWithCtor@@@Z"(%class.Class* %this, i8 %s.coerce)
void thiscall_method_arg(Small s) {}
// LINUX: define {{.*}} void @_ZN5Class19thiscall_method_argE5Small(%class.Class* %this, i32 %s.0)
// WIN32: define {{.*}} void @"\01?thiscall_method_arg@Class@@QAEXUSmall@@@Z"(%class.Class* %this, %struct.Small* byval align 4 %s)
// WIN64: define linkonce_odr void @"\01?thiscall_method_arg@Class@@QEAAXUSmall@@@Z"(%class.Class* %this, i32 %s.coerce)
void thiscall_method_arg(SmallWithCtor s) {}
// LINUX: define {{.*}} void @_ZN5Class19thiscall_method_argE13SmallWithCtor(%class.Class* %this, %struct.SmallWithCtor* byval align 4 %s)
// WIN32: define {{.*}} void @"\01?thiscall_method_arg@Class@@QAEXUSmallWithCtor@@@Z"(%class.Class* %this, %struct.SmallWithCtor* byval align 4 %s)
// WIN64: define linkonce_odr void @"\01?thiscall_method_arg@Class@@QEAAXUSmallWithCtor@@@Z"(%class.Class* %this, i32 %s.coerce)
void thiscall_method_arg(Big s) {}
// LINUX: define {{.*}} void @_ZN5Class19thiscall_method_argE3Big(%class.Class* %this, %struct.Big* byval align 4 %s)
// WIN32: define {{.*}} void @"\01?thiscall_method_arg@Class@@QAEXUBig@@@Z"(%class.Class* %this, %struct.Big* byval align 4 %s)
// WIN64: define linkonce_odr void @"\01?thiscall_method_arg@Class@@QEAAXUBig@@@Z"(%class.Class* %this, %struct.Big* %s)
};
void use_class() {
Class c;
c.thiscall_method_small();
c.thiscall_method_small_with_ctor();
c.cdecl_method_small();
c.cdecl_method_big();
c.thiscall_method_arg(Empty());
c.thiscall_method_arg(EmptyWithCtor());
c.thiscall_method_arg(Small());
c.thiscall_method_arg(SmallWithCtor());
c.thiscall_method_arg(Big());
}
struct X {
X();
~X();
};
void g(X) {
}
// WIN32: define void @"\01?g@@YAXUX@@@Z"(<{ %struct.X, [3 x i8] }>* inalloca) {{.*}} {
// WIN32: call x86_thiscallcc void @"\01??1X@@QAE@XZ"(%struct.X* {{.*}})
// WIN32: }
void f() {
g(X());
}
// WIN32: define void @"\01?f@@YAXXZ"() {{.*}} {
// WIN32-NOT: call {{.*}} @"\01??1X@@QAE@XZ"
// WIN32: }
namespace test2 {
// We used to crash on this due to the mixture of POD byval and non-trivial
// byval.
struct NonTrivial {
NonTrivial();
NonTrivial(const NonTrivial &o);
~NonTrivial();
int a;
};
struct POD { int b; };
int foo(NonTrivial a, POD b);
void bar() {
POD b;
b.b = 13;
int c = foo(NonTrivial(), b);
}
// WIN32-LABEL: define void @"\01?bar@test2@@YAXXZ"() {{.*}} {
// WIN32: %[[argmem:[^ ]*]] = alloca inalloca [[argmem_ty:<{ %"struct.test2::NonTrivial", %"struct.test2::POD" }>]]
// WIN32: getelementptr inbounds [[argmem_ty]], [[argmem_ty]]* %[[argmem]], i32 0, i32 1
// WIN32: call void @llvm.memcpy
// WIN32: getelementptr inbounds [[argmem_ty]], [[argmem_ty]]* %[[argmem]], i32 0, i32 0
// WIN32: call x86_thiscallcc %"struct.test2::NonTrivial"* @"\01??0NonTrivial@test2@@QAE@XZ"
// WIN32: call i32 @"\01?foo@test2@@YAHUNonTrivial@1@UPOD@1@@Z"([[argmem_ty]]* inalloca %argmem)
// WIN32: ret void
// WIN32: }
}
namespace test3 {
// Check that we padded the inalloca struct to a multiple of 4.
struct NonTrivial {
NonTrivial();
NonTrivial(const NonTrivial &o);
~NonTrivial();
int a;
};
void foo(NonTrivial a, bool b) { }
// WIN32-LABEL: define void @"\01?foo@test3@@YAXUNonTrivial@1@_N@Z"(<{ %"struct.test3::NonTrivial", i8, [3 x i8] }>* inalloca)
}
// We would crash here because the later definition of ForwardDeclare1 results
// in a different IR type for the value we want to store. However, the alloca's
// type will use the argument type selected by fn1.
struct ForwardDeclare1;
typedef void (*FnPtr1)(ForwardDeclare1);
void fn1(FnPtr1 a, SmallWithDtor b) { }
struct ForwardDeclare1 {};
void fn2(FnPtr1 a, SmallWithDtor b) { fn1(a, b); };
// WIN32-LABEL: define void @"\01?fn2@@YAXP6AXUForwardDeclare1@@@ZUSmallWithDtor@@@Z"
// WIN32: %[[a:[^ ]*]] = getelementptr inbounds [[argmem_ty:<{ {}\*, %struct.SmallWithDtor }>]], [[argmem_ty:<{ {}\*, %struct.SmallWithDtor }>]]* %{{.*}}, i32 0, i32 0
// WIN32: %[[a1:[^ ]*]] = bitcast {}** %[[a]] to void [[dst_ty:\(%struct.ForwardDeclare1\*\)\*]]*
// WIN32: %[[argmem:[^ ]*]] = alloca inalloca [[argmem_ty]]
// WIN32: %[[gep1:[^ ]*]] = getelementptr inbounds [[argmem_ty]], [[argmem_ty]]* %[[argmem]], i32 0, i32 1
// WIN32: %[[bc1:[^ ]*]] = bitcast %struct.SmallWithDtor* %[[gep1]] to i8*
// WIN32: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %[[bc1]], i8* {{.*}}, i32 4, i32 4, i1 false)
// WIN32: %[[a2:[^ ]*]] = load void [[dst_ty]], void [[dst_ty]]* %[[a1]], align 4
// WIN32: %[[gep2:[^ ]*]] = getelementptr inbounds [[argmem_ty]], [[argmem_ty]]* %[[argmem]], i32 0, i32 0
// WIN32: %[[addr:[^ ]*]] = bitcast {}** %[[gep2]] to void [[dst_ty]]*
// WIN32: store void [[dst_ty]] %[[a2]], void [[dst_ty]]* %[[addr]], align 4
// WIN32: call void @"\01?fn1@@YAXP6AXUForwardDeclare1@@@ZUSmallWithDtor@@@Z"([[argmem_ty]]* inalloca %[[argmem]])
