Comment # 1 on bug 70227 from Alexey Shvetsov

With recent llvm master branch build 
now it failes with

Building kernel CalculateMultipliers
Building kernel Sieve
Building kernel Combine
Building kernel Fermat
LLVM ERROR: Cannot select: 0x7f638ce2c2d0: i32,ch = AtomicLoadAdd
0x7f638ce86840, 0x7f638ce25e60, 0x7f638ce25f60<Volatile LDST4[%counter]>
[ORD=36] [ID=12]
  0x7f638ce25e60: i32,ch = CopyFromReg 0x7f638ce86840, 0x7f638ce2b7c0 [ORD=36]
[ID=8]
    0x7f638ce2b7c0: i32 = Register %vreg4 [ID=2]
  0x7f638ce25f60: i32 = Constant<1> [ID=1]
In function: Combine