}
using APInt::toString;
- /// If this int is representable using an int64_t.
- bool isRepresentableByInt64() const {
- // For unsigned values with 64 active bits, they technically fit into a
- // int64_t, but the user may get negative numbers and has to manually cast
- // them to unsigned. Let's not bet the user has the sanity to do that and
- // not give them a vague value at the first place.
- return isSigned() ? isSignedIntN(64) : isIntN(63);
- }
-
/// Get the correctly-extended \c int64_t value.
int64_t getExtValue() const {
- assert(isRepresentableByInt64() && "Too many bits for int64_t");
+ assert(getMinSignedBits() <= 64 && "Too many bits for int64_t");
return isSigned() ? getSExtValue() : getZExtValue();
}
- std::optional<int64_t> tryExtValue() const {
- return isRepresentableByInt64() ? std::optional<int64_t>(getExtValue())
- : std::nullopt;
- }
-
APSInt trunc(uint32_t width) const {
return APSInt(APInt::trunc(width), IsUnsigned);
}
EXPECT_EQ(UINT64_C(0) - 7, APSInt::getUnsigned(-7).getZExtValue());
}
-TEST(APSIntTest, isRepresentableByInt64) {
- ASSERT_TRUE(APSInt(APInt(3, 7), true).isRepresentableByInt64());
- ASSERT_TRUE(APSInt(APInt(128, 7), true).isRepresentableByInt64());
- ASSERT_TRUE(APSInt(APInt(128, 7), false).isRepresentableByInt64());
- ASSERT_TRUE(APSInt(APInt(64, -1), false).isRepresentableByInt64());
- ASSERT_FALSE(APSInt(APInt(64, (uint64_t)-1), true).isRepresentableByInt64());
-}
TEST(APSIntTest, getExtValue) {
EXPECT_TRUE(APSInt(APInt(3, 7), true).isUnsigned());
EXPECT_TRUE(APSInt(APInt(3, 7), false).isSigned());
EXPECT_EQ(9, APSInt(APInt(4, -7), true).getExtValue());
EXPECT_EQ(-7, APSInt(APInt(4, -7), false).getExtValue());
}
-TEST(APSIntTest, tryExtValue) {
- ASSERT_EQ(-7, APSInt(APInt(64, -7), false).tryExtValue().value_or(42));
- ASSERT_EQ(42, APSInt(APInt(128, -7), false).tryExtValue().value_or(42));
- ASSERT_EQ(-1,
- APSInt(APInt::getAllOnes(128), false).tryExtValue().value_or(42));
- ASSERT_EQ(42, APSInt(APInt(64, -7), true).tryExtValue().value_or(42));
- ASSERT_EQ(1, APSInt(APInt(128, 1), true).tryExtValue().value_or(42));
- ASSERT_EQ(42,
- APSInt(APInt::getAllOnes(128), true).tryExtValue().value_or(42));
-}
TEST(APSIntTest, compareValues) {
auto U = [](uint64_t V) { return APSInt::getUnsigned(V); };