llvm-project/clang/test/CodeGenCXX/cxx1z-constexpr-if.cpp

35 lines
666 B
C++

// RUN: %clang_cc1 -std=c++1z %s -emit-llvm -o - | FileCheck %s --implicit-check-not=should_not_be_used
void should_be_used_1();
void should_be_used_2();
void should_be_used_3();
void should_not_be_used();
struct A {
constexpr explicit operator bool() const {
return true;
}
};
void f() {
if constexpr (false)
should_not_be_used();
else
should_be_used_1();
if constexpr (true || ({ label: false; }))
should_be_used_2();
else {
goto foo;
foo: should_not_be_used();
}
if constexpr (A())
should_be_used_3();
else
should_not_be_used();
}
// CHECK: should_be_used_1
// CHECK: should_be_used_2
// CHECK: should_be_used_3