public:
/// Default is byte-aligned.
- Align() = default;
+ constexpr Align() = default;
/// Do not perform checks in case of copy/move construct/assign, because the
/// checks have been performed when building `Other`.
Align(const Align &Other) = default;
/// This is a hole in the type system and should not be abused.
/// Needed to interact with C for instance.
uint64_t value() const { return uint64_t(1) << ShiftValue; }
+
+ /// Returns a default constructed Align which corresponds to no alignment.
+ /// This is useful to test for unalignment as it conveys clear semantic.
+ /// `if (A != llvm::Align::None())`
+ /// would be better than
+ /// `if (A > llvm::Align(1))`
+ constexpr static const Align None() { return llvm::Align(); }
};
/// Treats the value 0 as a 1, so Align is always at least 1.
return Out;
}
-TEST(AlignmentTest, AlignDefaultCTor) { EXPECT_EQ(Align().value(), 1ULL); }
+TEST(AlignmentTest, AlignDefaultCTor) {
+ EXPECT_EQ(Align().value(), 1ULL);
+ EXPECT_EQ(Align::None().value(), 1ULL);
+}
TEST(AlignmentTest, MaybeAlignDefaultCTor) {
EXPECT_FALSE(MaybeAlign().hasValue());