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MathExtras: Return the result of find(First|Last)Set in the input type.
Otherwise ZB_Max returns a wrong result when sizeof(T) > sizeof(size_t). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182684 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -177,7 +177,7 @@ inline std::size_t countLeadingZeros<uint64_t>(uint64_t Val, ZeroBehavior ZB) {
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/// valid arguments.
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/// valid arguments.
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template <typename T>
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template <typename T>
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typename enable_if_c<std::numeric_limits<T>::is_integer &&
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typename enable_if_c<std::numeric_limits<T>::is_integer &&
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!std::numeric_limits<T>::is_signed, std::size_t>::type
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!std::numeric_limits<T>::is_signed, T>::type
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findFirstSet(T Val, ZeroBehavior ZB = ZB_Max) {
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findFirstSet(T Val, ZeroBehavior ZB = ZB_Max) {
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if (ZB == ZB_Max && Val == 0)
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if (ZB == ZB_Max && Val == 0)
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return std::numeric_limits<T>::max();
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return std::numeric_limits<T>::max();
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@ -188,7 +188,7 @@ findFirstSet(T Val, ZeroBehavior ZB = ZB_Max) {
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// Disable signed.
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// Disable signed.
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template <typename T>
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template <typename T>
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typename enable_if_c<std::numeric_limits<T>::is_integer &&
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typename enable_if_c<std::numeric_limits<T>::is_integer &&
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std::numeric_limits<T>::is_signed, std::size_t>::type
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std::numeric_limits<T>::is_signed, T>::type
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findFirstSet(T Val, ZeroBehavior ZB = ZB_Max) LLVM_DELETED_FUNCTION;
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findFirstSet(T Val, ZeroBehavior ZB = ZB_Max) LLVM_DELETED_FUNCTION;
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/// \brief Get the index of the last set bit starting from the least
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/// \brief Get the index of the last set bit starting from the least
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@ -200,7 +200,7 @@ findFirstSet(T Val, ZeroBehavior ZB = ZB_Max) LLVM_DELETED_FUNCTION;
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/// valid arguments.
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/// valid arguments.
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template <typename T>
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template <typename T>
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typename enable_if_c<std::numeric_limits<T>::is_integer &&
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typename enable_if_c<std::numeric_limits<T>::is_integer &&
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!std::numeric_limits<T>::is_signed, std::size_t>::type
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!std::numeric_limits<T>::is_signed, T>::type
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findLastSet(T Val, ZeroBehavior ZB = ZB_Max) {
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findLastSet(T Val, ZeroBehavior ZB = ZB_Max) {
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if (ZB == ZB_Max && Val == 0)
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if (ZB == ZB_Max && Val == 0)
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return std::numeric_limits<T>::max();
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return std::numeric_limits<T>::max();
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@ -214,7 +214,7 @@ findLastSet(T Val, ZeroBehavior ZB = ZB_Max) {
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// Disable signed.
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// Disable signed.
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template <typename T>
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template <typename T>
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typename enable_if_c<std::numeric_limits<T>::is_integer &&
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typename enable_if_c<std::numeric_limits<T>::is_integer &&
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std::numeric_limits<T>::is_signed, std::size_t>::type
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std::numeric_limits<T>::is_signed, T>::type
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findLastSet(T Val, ZeroBehavior ZB = ZB_Max) LLVM_DELETED_FUNCTION;
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findLastSet(T Val, ZeroBehavior ZB = ZB_Max) LLVM_DELETED_FUNCTION;
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/// \brief Macro compressed bit reversal table for 256 bits.
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/// \brief Macro compressed bit reversal table for 256 bits.
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