The good news is that the store error is gone...

Now I get a load error :/

LLVM ERROR: Cannot select: 0x2c92af0: i64,ch = load 0x21fe0c8, 0x2c924f0,
0x2c921f0<LD4[undef](align=8), zext from i32> [ID=15]
  0x2c924f0: i64 = add 0x2c91ef0, 0x2c923f0 [ID=13]
    0x2c91ef0: i64,ch = CopyFromReg 0x21fe0c8, 0x2c91df0 [ID=12]
      0x2c91df0: i64 = Register %vreg0 [ID=1]
    0x2c923f0: i64 = Constant<44> [ID=4]
  0x2c921f0: i64 = undef [ID=3]

I'll attach the llvm assembly in a follow-up