IDA HexRays: signed/unsigned types and 32/64 bits dont match assembly

Here is assembly:

  mov     rdi, [r13+rax*8+0]
  sub     rdi, rcx
  cvtsi2sd xmm0, rdi
  movsd   qword ptr [r11+rax*8], xmm0
  cvtsi2sd xmm0, qword ptr [r14+rax*8]
  movsd   qword ptr [rsi+rax*8], xmm0
  add     rax, 1

And here is an output from Hexrays decompiler

{
      v32[v34] = (double)(LODWORD(v11[v34]) - (int)var1);
      v33[v34] = (double)(int)v10[v34];
      ++v34;
}

issue:
v10, v11 and var1 are declared as __int64* and __int64. Any ideas why decompiler converts them to 32 bit integers? I see those being moved to 64 bit registers. This is an ELF64 executable