diff options
Diffstat (limited to 'contrib/llvm/include/llvm/Support/MathExtras.h')
| -rw-r--r-- | contrib/llvm/include/llvm/Support/MathExtras.h | 45 |
1 files changed, 23 insertions, 22 deletions
diff --git a/contrib/llvm/include/llvm/Support/MathExtras.h b/contrib/llvm/include/llvm/Support/MathExtras.h index 0abba62a2c23..698363614ac5 100644 --- a/contrib/llvm/include/llvm/Support/MathExtras.h +++ b/contrib/llvm/include/llvm/Support/MathExtras.h @@ -22,7 +22,6 @@ #ifdef _MSC_VER #include <intrin.h> -#include <limits> #endif namespace llvm { @@ -73,7 +72,7 @@ countTrailingZeros(T Val, ZeroBehavior ZB = ZB_Width) { template <typename T> typename std::enable_if<std::numeric_limits<T>::is_integer && std::numeric_limits<T>::is_signed, std::size_t>::type -countTrailingZeros(T Val, ZeroBehavior ZB = ZB_Width) LLVM_DELETED_FUNCTION; +countTrailingZeros(T, ZeroBehavior = ZB_Width) LLVM_DELETED_FUNCTION; #if __GNUC__ >= 4 || _MSC_VER template <> @@ -81,7 +80,7 @@ inline std::size_t countTrailingZeros<uint32_t>(uint32_t Val, ZeroBehavior ZB) { if (ZB != ZB_Undefined && Val == 0) return 32; -#if __has_builtin(__builtin_ctz) || __GNUC_PREREQ(4, 0) +#if __has_builtin(__builtin_ctz) || LLVM_GNUC_PREREQ(4, 0, 0) return __builtin_ctz(Val); #elif _MSC_VER unsigned long Index; @@ -96,7 +95,7 @@ inline std::size_t countTrailingZeros<uint64_t>(uint64_t Val, ZeroBehavior ZB) { if (ZB != ZB_Undefined && Val == 0) return 64; -#if __has_builtin(__builtin_ctzll) || __GNUC_PREREQ(4, 0) +#if __has_builtin(__builtin_ctzll) || LLVM_GNUC_PREREQ(4, 0, 0) return __builtin_ctzll(Val); #elif _MSC_VER unsigned long Index; @@ -139,7 +138,7 @@ countLeadingZeros(T Val, ZeroBehavior ZB = ZB_Width) { template <typename T> typename std::enable_if<std::numeric_limits<T>::is_integer && std::numeric_limits<T>::is_signed, std::size_t>::type -countLeadingZeros(T Val, ZeroBehavior ZB = ZB_Width) LLVM_DELETED_FUNCTION; +countLeadingZeros(T, ZeroBehavior = ZB_Width) LLVM_DELETED_FUNCTION; #if __GNUC__ >= 4 || _MSC_VER template <> @@ -147,7 +146,7 @@ inline std::size_t countLeadingZeros<uint32_t>(uint32_t Val, ZeroBehavior ZB) { if (ZB != ZB_Undefined && Val == 0) return 32; -#if __has_builtin(__builtin_clz) || __GNUC_PREREQ(4, 0) +#if __has_builtin(__builtin_clz) || LLVM_GNUC_PREREQ(4, 0, 0) return __builtin_clz(Val); #elif _MSC_VER unsigned long Index; @@ -162,7 +161,7 @@ inline std::size_t countLeadingZeros<uint64_t>(uint64_t Val, ZeroBehavior ZB) { if (ZB != ZB_Undefined && Val == 0) return 64; -#if __has_builtin(__builtin_clzll) || __GNUC_PREREQ(4, 0) +#if __has_builtin(__builtin_clzll) || LLVM_GNUC_PREREQ(4, 0, 0) return __builtin_clzll(Val); #elif _MSC_VER unsigned long Index; @@ -194,7 +193,7 @@ findFirstSet(T Val, ZeroBehavior ZB = ZB_Max) { template <typename T> typename std::enable_if<std::numeric_limits<T>::is_integer && std::numeric_limits<T>::is_signed, T>::type -findFirstSet(T Val, ZeroBehavior ZB = ZB_Max) LLVM_DELETED_FUNCTION; +findFirstSet(T, ZeroBehavior = ZB_Max) LLVM_DELETED_FUNCTION; /// \brief Get the index of the last set bit starting from the least /// significant bit. @@ -220,7 +219,7 @@ findLastSet(T Val, ZeroBehavior ZB = ZB_Max) { template <typename T> typename std::enable_if<std::numeric_limits<T>::is_integer && std::numeric_limits<T>::is_signed, T>::type -findLastSet(T Val, ZeroBehavior ZB = ZB_Max) LLVM_DELETED_FUNCTION; +findLastSet(T, ZeroBehavior = ZB_Max) LLVM_DELETED_FUNCTION; /// \brief Macro compressed bit reversal table for 256 bits. /// @@ -550,16 +549,23 @@ inline uint64_t MinAlign(uint64_t A, uint64_t B) { return (A | B) & (1 + ~(A | B)); } -/// \brief Aligns \c Ptr to \c Alignment bytes, rounding up. +/// \brief Aligns \c Addr to \c Alignment bytes, rounding up. /// /// Alignment should be a power of two. This method rounds up, so -/// AlignPtr(7, 4) == 8 and AlignPtr(8, 4) == 8. -inline char *alignPtr(char *Ptr, size_t Alignment) { +/// alignAddr(7, 4) == 8 and alignAddr(8, 4) == 8. +inline uintptr_t alignAddr(void *Addr, size_t Alignment) { assert(Alignment && isPowerOf2_64((uint64_t)Alignment) && "Alignment is not a power of two!"); - return (char *)(((uintptr_t)Ptr + Alignment - 1) & - ~(uintptr_t)(Alignment - 1)); + assert((uintptr_t)Addr + Alignment - 1 >= (uintptr_t)Addr); + + return (((uintptr_t)Addr + Alignment - 1) & ~(uintptr_t)(Alignment - 1)); +} + +/// \brief Returns the necessary adjustment for aligning \c Ptr to \c Alignment +/// bytes, rounding up. +inline size_t alignmentAdjustment(void *Ptr, size_t Alignment) { + return alignAddr(Ptr, Alignment) - (uintptr_t)Ptr; } /// NextPowerOf2 - Returns the next power of two (in 64-bits) @@ -589,9 +595,10 @@ inline uint64_t PowerOf2Floor(uint64_t A) { /// RoundUpToAlignment(5, 8) = 8 /// RoundUpToAlignment(17, 8) = 24 /// RoundUpToAlignment(~0LL, 8) = 0 +/// RoundUpToAlignment(321, 255) = 510 /// \endcode inline uint64_t RoundUpToAlignment(uint64_t Value, uint64_t Align) { - return ((Value + Align - 1) / Align) * Align; + return (Value + Align - 1) / Align * Align; } /// Returns the offset to the next integer (mod 2**64) that is greater than @@ -632,13 +639,7 @@ inline int64_t SignExtend64(uint64_t X, unsigned B) { return int64_t(X << (64 - B)) >> (64 - B); } -#if defined(_MSC_VER) - // Visual Studio defines the HUGE_VAL class of macros using purposeful - // constant arithmetic overflow, which it then warns on when encountered. - const float huge_valf = std::numeric_limits<float>::infinity(); -#else - const float huge_valf = HUGE_VALF; -#endif +extern const float huge_valf; } // End llvm namespace #endif |