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[Support][MathExtras] Add missing include and disable _BitScan{Forward,Reverse}64 on non x64 MSVC systems.

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llvm-svn: 182671
This commit is contained in:
Michael J. Spencer 2013-05-24 20:51:59 +00:00
parent 49652c9433
commit 9da977410d
1 changed files with 5 additions and 0 deletions
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5
include/llvm/Support/MathExtras.h
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@ -14,6 +14,7 @@
#ifndef LLVM_SUPPORT_MATHEXTRAS_H
#define LLVM_SUPPORT_MATHEXTRAS_H
#include "llvm/Support/Compiler.h"
#include "llvm/Support/SwapByteOrder.h"
#include "llvm/Support/type_traits.h"
@ -86,6 +87,7 @@ inline std::size_t countTrailingZeros<uint32_t>(uint32_t Val, ZeroBehavior ZB) {
#endif
}
#if !defined(_MSC_VER) || defined(_M_X64)
template <>
inline std::size_t countTrailingZeros<uint64_t>(uint64_t Val, ZeroBehavior ZB) {
if (ZB != ZB_Undefined && Val == 0)
@ -100,6 +102,7 @@ inline std::size_t countTrailingZeros<uint64_t>(uint64_t Val, ZeroBehavior ZB) {
#endif
}
#endif
#endif
/// \brief Count number of 0's from the most significant bit to the least
/// stopping at the first 1.
@ -148,6 +151,7 @@ inline std::size_t countLeadingZeros<uint32_t>(uint32_t Val, ZeroBehavior ZB) {
#endif
}
#if !defined(_MSC_VER) || defined(_M_X64)
template <>
inline std::size_t countLeadingZeros<uint64_t>(uint64_t Val, ZeroBehavior ZB) {
if (ZB != ZB_Undefined && Val == 0)
@ -162,6 +166,7 @@ inline std::size_t countLeadingZeros<uint64_t>(uint64_t Val, ZeroBehavior ZB) {
#endif
}
#endif
#endif
/// \brief Get the index of the first set bit starting from the least
/// significant bit.