Target/X86/X86FastISel.cpp

146   bool IsMemcpySmall(uint64_t Len);
149                           X86AddressMode SrcAM, uint64_t Len);
1604 bool X86FastISel::IsMemcpySmall(uint64_t Len) {
1605   return Len <= (Subtarget->is64Bit() ? 32 : 16);
1609                                      X86AddressMode SrcAM, uint64_t Len) {
1612   if (!IsMemcpySmall(Len))
1618   while (Len) {
1620     if (Len >= 8 && i64Legal)
1622     else if (Len >= 4)
1624     else if (Len >= 2)
1636     Len -= Size;
1657       uint64_t Len = cast<ConstantInt>(MCI.getLength())->getZExtValue();
1658       if (IsMemcpySmall(Len)) {
1663         TryEmitSmallMemcpy(DestAM, SrcAM, Len);