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| 1 //===-- subzero/src/IceAPInt.h - Constant integer conversions --*- C++ -*--===// | 1 //===-- subzero/src/IceAPInt.h - Constant integer conversions --*- C++ -*--===// |
| 2 // | 2 // |
| 3 // The LLVM Compiler Infrastructure | 3 // The LLVM Compiler Infrastructure |
| 4 // | 4 // |
| 5 // This file is distributed under the University of Illinois Open Source | 5 // This file is distributed under the University of Illinois Open Source |
| 6 // License. See LICENSE.TXT for details. | 6 // License. See LICENSE.TXT for details. |
| 7 // | 7 // |
| 8 //===----------------------------------------------------------------------===// | 8 //===----------------------------------------------------------------------===// |
| 9 /// | 9 /// |
| 10 /// \file | 10 /// \file |
| (...skipping 29 matching lines...) Expand all Loading... |
| 40 uint32_t getBitWidth() const { return BitWidth; } | 40 uint32_t getBitWidth() const { return BitWidth; } |
| 41 | 41 |
| 42 int64_t getSExtValue() const { | 42 int64_t getSExtValue() const { |
| 43 return static_cast<int64_t>(Val << (APINT_BITS_PER_WORD - BitWidth)) >> | 43 return static_cast<int64_t>(Val << (APINT_BITS_PER_WORD - BitWidth)) >> |
| 44 (APINT_BITS_PER_WORD - BitWidth); | 44 (APINT_BITS_PER_WORD - BitWidth); |
| 45 } | 45 } |
| 46 | 46 |
| 47 uint64_t getRawData() const { return Val; } | 47 uint64_t getRawData() const { return Val; } |
| 48 | 48 |
| 49 private: | 49 private: |
| 50 uint32_t BitWidth; // The number of bits in this APInt. | 50 uint32_t BitWidth; /// The number of bits in this APInt. |
| 51 uint64_t Val; // The (64-bit) equivalent integer value. | 51 uint64_t Val; /// The (64-bit) equivalent integer value. |
| 52 | 52 |
| 53 /// Clear unused high order bits. | 53 /// Clear unused high order bits. |
| 54 void clearUnusedBits() { | 54 void clearUnusedBits() { |
| 55 // If all bits are used, we want to leave the value alone. | 55 // If all bits are used, we want to leave the value alone. |
| 56 if (BitWidth == APINT_BITS_PER_WORD) | 56 if (BitWidth == APINT_BITS_PER_WORD) |
| 57 return; | 57 return; |
| 58 | 58 |
| 59 // Mask out the high bits. | 59 // Mask out the high bits. |
| 60 Val &= ~static_cast<uint64_t>(0) >> (APINT_BITS_PER_WORD - BitWidth); | 60 Val &= ~static_cast<uint64_t>(0) >> (APINT_BITS_PER_WORD - BitWidth); |
| 61 } | 61 } |
| 62 }; | 62 }; |
| 63 | 63 |
| 64 } // end of namespace Ice | 64 } // end of namespace Ice |
| 65 | 65 |
| 66 #endif // SUBZERO_SRC_ICEAPINT_H | 66 #endif // SUBZERO_SRC_ICEAPINT_H |
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