diff options
Diffstat (limited to 'contrib/llvm/lib/Support/FoldingSet.cpp')
| -rw-r--r-- | contrib/llvm/lib/Support/FoldingSet.cpp | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/contrib/llvm/lib/Support/FoldingSet.cpp b/contrib/llvm/lib/Support/FoldingSet.cpp index 463511408759..b8538ffe1f9f 100644 --- a/contrib/llvm/lib/Support/FoldingSet.cpp +++ b/contrib/llvm/lib/Support/FoldingSet.cpp @@ -51,8 +51,8 @@ bool FoldingSetNodeIDRef::operator<(FoldingSetNodeIDRef RHS) const { /// void FoldingSetNodeID::AddPointer(const void *Ptr) { // Note: this adds pointers to the hash using sizes and endianness that - // depend on the host. It doesn't matter however, because hashing on - // pointer values in inherently unstable. Nothing should depend on the + // depend on the host. It doesn't matter, however, because hashing on + // pointer values is inherently unstable. Nothing should depend on the // ordering of nodes in the folding set. Bits.append(reinterpret_cast<unsigned *>(&Ptr), reinterpret_cast<unsigned *>(&Ptr+1)); @@ -101,6 +101,8 @@ void FoldingSetNodeID::AddString(StringRef String) { // Otherwise do it the hard way. // To be compatible with above bulk transfer, we need to take endianness // into account. + static_assert(sys::IsBigEndianHost || sys::IsLittleEndianHost, + "Unexpected host endianness"); if (sys::IsBigEndianHost) { for (Pos += 4; Pos <= Size; Pos += 4) { unsigned V = ((unsigned char)String[Pos - 4] << 24) | @@ -109,8 +111,7 @@ void FoldingSetNodeID::AddString(StringRef String) { (unsigned char)String[Pos - 1]; Bits.push_back(V); } - } else { - assert(sys::IsLittleEndianHost && "Unexpected host endianness"); + } else { // Little-endian host for (Pos += 4; Pos <= Size; Pos += 4) { unsigned V = ((unsigned char)String[Pos - 1] << 24) | ((unsigned char)String[Pos - 2] << 16) | @@ -222,6 +223,8 @@ static void **AllocateBuckets(unsigned NumBuckets) { //===----------------------------------------------------------------------===// // FoldingSetImpl Implementation +void FoldingSetImpl::anchor() {} + FoldingSetImpl::FoldingSetImpl(unsigned Log2InitSize) { assert(5 < Log2InitSize && Log2InitSize < 32 && "Initial hash table size out of range"); |