git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197277
91177308-0d34-0410-b5e6-
96231b3b80d8
/// as "bitPosition".
void flipBit(unsigned bitPosition);
/// as "bitPosition".
void flipBit(unsigned bitPosition);
- /// \brief Returns true if the bit in bitPosition is set.
- bool extractBit(unsigned bitPosition) const;
-
/// @}
/// \name Value Characterization Functions
/// @{
/// @}
/// \name Value Characterization Functions
/// @{
// UINT32_MAX. Finally extractBit of MSB - 1 will be UINT32_MAX implying
// that we get BitWidth - 1.
unsigned lg = logBase2();
// UINT32_MAX. Finally extractBit of MSB - 1 will be UINT32_MAX implying
// that we get BitWidth - 1.
unsigned lg = logBase2();
- return lg + unsigned(extractBit(std::min(lg - 1, BitWidth - 1)));
+ return lg + unsigned((*this)[std::min(lg - 1, BitWidth - 1)]);
}
/// \returns the log base 2 of this APInt if its an exact power of two, -1
}
/// \returns the log base 2 of this APInt if its an exact power of two, -1
else setBit(bitPosition);
}
else setBit(bitPosition);
}
-bool APInt::extractBit(unsigned bitPosition) const {
- assert(bitPosition < BitWidth && "Out of the bit-width range!");
- if (isSingleWord())
- return VAL & maskBit(bitPosition);
- else
- return pVal[whichWord(bitPosition)] & maskBit(bitPosition);
-}
-
unsigned APInt::getBitsNeeded(StringRef str, uint8_t radix) {
assert(!str.empty() && "Invalid string length");
assert((radix == 10 || radix == 8 || radix == 16 || radix == 2 ||
unsigned APInt::getBitsNeeded(StringRef str, uint8_t radix) {
assert(!str.empty() && "Invalid string length");
assert((radix == 10 || radix == 8 || radix == 16 || radix == 2 ||
-TEST(APIntTest, extractBit) {
+TEST(APIntTest, arrayAccess) {
// Single word check.
uint64_t E1 = 0x2CA7F46BF6569915ULL;
APInt A1(64, E1);
for (unsigned i = 0, e = 64; i < e; ++i) {
EXPECT_EQ(bool(E1 & (1ULL << i)),
// Single word check.
uint64_t E1 = 0x2CA7F46BF6569915ULL;
APInt A1(64, E1);
for (unsigned i = 0, e = 64; i < e; ++i) {
EXPECT_EQ(bool(E1 & (1ULL << i)),
for (unsigned i = 0; i < 4; ++i) {
for (unsigned j = 0; j < integerPartWidth; ++j) {
EXPECT_EQ(bool(E2[i] & (1ULL << j)),
for (unsigned i = 0; i < 4; ++i) {
for (unsigned j = 0; j < integerPartWidth; ++j) {
EXPECT_EQ(bool(E2[i] & (1ULL << j)),
- A2.extractBit(i*integerPartWidth + j));
+ A2[i*integerPartWidth + j]);