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// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-unknown-linux-gnu -std=c++20 %s -emit-llvm -o - | FileCheck %s
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 i32* @_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
}
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