diff options
Diffstat (limited to 'include/llvm/Support/ConstantRange.h')
| -rw-r--r-- | include/llvm/Support/ConstantRange.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/include/llvm/Support/ConstantRange.h b/include/llvm/Support/ConstantRange.h index 0f29256..f757c6e 100644 --- a/include/llvm/Support/ConstantRange.h +++ b/include/llvm/Support/ConstantRange.h @@ -42,6 +42,14 @@ namespace llvm { class ConstantRange { APInt Lower, Upper; +#if LLVM_HAS_RVALUE_REFERENCES + // If we have move semantics, pass APInts by value and move them into place. + typedef APInt APIntMoveTy; +#else + // Otherwise pass by const ref to save one copy. + typedef const APInt &APIntMoveTy; +#endif + public: /// Initialize a full (the default) or empty set for the specified bit width. /// @@ -49,12 +57,12 @@ public: /// Initialize a range to hold the single specified value. /// - ConstantRange(const APInt &Value); + ConstantRange(APIntMoveTy Value); /// @brief Initialize a range of values explicitly. This will assert out if /// Lower==Upper and Lower != Min or Max value for its type. It will also /// assert out if the two APInt's are not the same bit width. - ConstantRange(const APInt &Lower, const APInt &Upper); + ConstantRange(APIntMoveTy Lower, APIntMoveTy Upper); /// makeICmpRegion - Produce the smallest range that contains all values that /// might satisfy the comparison specified by Pred when compared to any value |