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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 %s -emit-llvm -o - | FileCheck %s
// RUN: %clang_cc1 -emit-obj -debug-info-kind=constructor -std=c++20 %s -o -
namespace PR50787 {
// This code would previously cause a crash.
extern int x_;
consteval auto& X() { return x_; }
constexpr auto& x1 = X();
auto x2 = X();
// CHECK: @_ZN7PR507872x_E = external global i32, align 4
// CHECK-NEXT: @_ZN7PR507872x1E = constant ptr @_ZN7PR507872x_E, align 8
// CHECK-NEXT: @_ZN7PR507872x2E = global i32 0, align 4
}
namespace PR51484 {
// This code would previously cause a crash.
struct X { int val; };
consteval X g() { return {0}; }
void f() { g(); }
// CHECK: define dso_local void @_ZN7PR514841fEv() #1 {
// CHECK: entry:
// CHECK-NOT: call i32 @_ZN7PR514841gEv()
// CHECK: ret void
// CHECK: }
}
namespace Issue54578 {
inline consteval unsigned char operator""_UC(const unsigned long long n) {
return static_cast<unsigned char>(n);
}
inline constexpr char f1(const auto octet) {
return 4_UC;
}
template <typename Ty>
inline constexpr char f2(const Ty octet) {
return 4_UC;
}
int foo() {
return f1('a') + f2('a');
}
// Because the consteval functions are inline (implicitly as well as
// explicitly), we need to defer the CHECK lines until this point to get the
// order correct. We want to ensure there is no definition of the consteval
// UDL function, and that the constexpr f1 and f2 functions both return a
// constant value.
// CHECK-NOT: define{{.*}} zeroext i8 @_ZN10Issue54578li3_UCEy
// CHECK: define{{.*}} i32 @_ZN10Issue545783fooEv(
// CHECK: define{{.*}} signext i8 @_ZN10Issue545782f1IcEEcT_(
// CHECK: ret i8 4
// CHECK: define{{.*}} signext i8 @_ZN10Issue545782f2IcEEcT_(
// CHECK: ret i8 4
}
namespace Issue55871 {
struct Item {
consteval Item(char c) :_char{c}{}
char _char;
};
int function(const Item& item1, const Item& item2) {
return 0;
}
int foo() {
return function(Item{'a'}, Item{'a'});
}
} // namespace Issue58871
namespace Issue55065 {
struct Base {
consteval virtual int Get() const = 0;
};
struct Derived : Base {
consteval int Get() const override {
return 42;
}
};
int foo() {
constexpr Derived a;
auto val = a.Get();
return val;
}
} // namespace Issue55065
namespace GH60166 {
struct Base {
void* one = nullptr;
void* two = nullptr;
};
struct Derived : Base {
void* three = nullptr;
consteval Derived() = default;
};
void method() {
// CHECK: %agg.tmp.ensured = alloca %"struct.GH60166::Derived"
// CHECK: %0 = getelementptr inbounds { ptr, ptr, ptr }, ptr %agg.tmp.ensured, i32 0, i32 0
// CHECK: store ptr null, ptr %0, align 8
// CHECK: %1 = getelementptr inbounds { ptr, ptr, ptr }, ptr %agg.tmp.ensured, i32 0, i32 1
// CHECK: store ptr null, ptr %1, align 8
// CHECK: %2 = getelementptr inbounds { ptr, ptr, ptr }, ptr %agg.tmp.ensured, i32 0, i32 2
// CHECK: store ptr null, ptr %2, align 8
(void)Derived();
}
} // namespace GH60166
namespace GH61142 {
template <typename T>
struct Test {
constexpr static void bar() {
foo();
}
consteval static void foo() {};
};
consteval void a() {
Test<int>::bar();
}
void b() {
Test<int>::bar();
}
// Make sure consteval function is not emitted.
// CHECK-NOT: call {{.*}}foo{{.*}}()
// CHECK-NOT: define {{.*}}foo{{.*}}()
} // namespace GH61142
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