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// RUN: %clang_cc1 -std=c++2b %s -emit-llvm -o - | FileCheck %s
void should_be_used_1();
void should_be_used_2();
void should_be_used_3();
constexpr void should_not_be_used() {}
constexpr void f() {
if consteval {
should_not_be_used(); // CHECK-NOT: call {{.*}}should_not_be_used
} else {
should_be_used_1(); // CHECK: call {{.*}}should_be_used_1
}
if !consteval {
should_be_used_2(); // CHECK: call {{.*}}should_be_used_2
}
if !consteval {
should_be_used_3(); // CHECK: call {{.*}}should_be_used_3
} else {
should_not_be_used(); // CHECK-NOT: call {{.*}}should_not_be_used
}
}
void g() {
f();
}
namespace GH55638 {
constexpr bool is_constant_evaluated() noexcept {
if consteval { return true; } else { return false; }
}
constexpr int compiletime(int) {
return 2;
}
constexpr int runtime(int) {
return 1;
}
constexpr int test(int x) {
if(is_constant_evaluated())
return compiletime(x); // CHECK-NOT: call {{.*}}compiletime
return runtime(x); // CHECK: call {{.*}}runtime
}
int f(int x) {
x = test(x);
return x;
}
}
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