user: 请从给定的汇编指令推导出C源代码:

```asm
<integerReplacement>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  cmp    $0x7fffffff,%edi
  je     L108
  mov    %edi,%ebx
  cmp    $0x1,%edi
  je     L358
  mov    $0x1,%eax
  test   $0x1,%dil
  je     L40
  jmp    L124
  nopl   0x0(%rax)
L133:
  lea    0x1(%r12),%eax
  test   $0x1,%bl
  jne    L242
L40:
  sar    %ebx
  mov    %eax,%r12d
  cmp    $0x1,%ebx
  jne    L133
L234:
  add    $0x18,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  cs nopw 0x0(%rax,%rax,1)
L242:
  lea    0x1(%rbx),%r15d
L313:
  cmp    $0x1,%r15d
  je     L429
  mov    $0x1,%eax
  test   $0x1,%r15b
  je     L433
  jmp    L379
  xchg   %ax,%ax
L350:
  lea    0x1(%rbp),%eax
  test   $0x1,%r15b
  jne    L265
L433:
  sar    %r15d
  mov    %eax,%ebp
  cmp    $0x1,%r15d
  jne    L350
L361:
  lea    0x1(%rbp),%r15d
  lea    -0x1(%rbx),%ebp
  cmp    $0x2,%ebx
  je     L351
L32:
  mov    $0x1,%eax
  xor    %r13d,%r13d
  test   $0x1,%bpl
  je     L229
  jmp    L288
  nopl   0x0(%rax)
L304:
  lea    0x1(%r13),%eax
  test   $0x1,%bpl
  jne    L338
L229:
  sar    %ebp
  mov    %eax,%r13d
  cmp    $0x1,%ebp
  jne    L304
  lea    0x1(%rax),%ebp
L351:
  cmp    %ebp,%r15d
  cmovle %r15d,%ebp
  add    %ebp,%r12d
  jmp    L234
L338:
  lea    0x1(%rbp),%ebx
L288:
  lea    -0x1(%rbp),%r14d
  cmp    $0x1,%ebx
  je     L99
  mov    $0x1,%eax
  xor    %edx,%edx
  test   $0x1,%bl
  je     L275
  jmp    L215
  nopl   0x0(%rax,%rax,1)
L44:
  lea    0x1(%rdx),%eax
  test   $0x1,%bl
  jne    L403
L275:
  sar    %ebx
  mov    %eax,%edx
  cmp    $0x1,%ebx
  jne    L44
L340:
  lea    0x1(%rdx),%ebx
  cmp    $0x1,%r14d
  je     L57
L99:
  mov    $0x1,%eax
  xor    %edx,%edx
  test   $0x1,%r14b
  je     L269
  jmp    L387
L257:
  add    $0x1,%eax
  test   $0x1,%r14b
  jne    L387
L269:
  sar    %r14d
  mov    %eax,%edx
  cmp    $0x1,%r14d
  jne    L257
  lea    0x1(%rax),%r14d
L57:
  cmp    %r14d,%ebx
  cmovle %ebx,%r14d
  lea    0x1(%r13,%r14,1),%ebp
  cmp    %ebp,%r15d
  cmovle %r15d,%ebp
  add    %ebp,%r12d
  jmp    L234
L265:
  lea    0x1(%r15),%r13d
  lea    -0x1(%r15),%r14d
L306:
  cmp    $0x1,%r13d
  je     L73
  mov    $0x1,%eax
  mov    %r15d,%r8d
  xor    %edx,%edx
  test   $0x1,%r13b
  je     L168
  jmp    L177
  nopw   0x0(%rax,%rax,1)
L94:
  lea    0x1(%rdx),%eax
  test   $0x1,%r13b
  jne    L71
L168:
  sar    %r13d
  mov    %eax,%edx
  cmp    $0x1,%r13d
  jne    L94
L460:
  lea    0x1(%rdx),%r13d
  cmp    $0x1,%r14d
  je     L270
L73:
  mov    %r14d,%eax
  and    $0x1,%eax
  test   %eax,%eax
  jne    L152
  mov    $0x1,%eax
  jmp    L47
  nopw   0x0(%rax,%rax,1)
L58:
  lea    0x1(%rdx),%eax
  test   $0x1,%r14b
  jne    L5
L47:
  sar    %r14d
  mov    %eax,%edx
  cmp    $0x1,%r14d
  jne    L58
  lea    0x1(%rax),%r14d
L270:
  cmp    %r14d,%r13d
  cmovg  %r14d,%r13d
  add    %r13d,%ebp
  jmp    L361
L108:
  mov    $0x20,%r12d
  jmp    L234
L358:
  xor    %r12d,%r12d
  jmp    L234
L124:
  lea    0x1(%rdi),%r15d
  cmp    $0x7ffffffe,%edi
  je     L428
  xor    %r12d,%r12d
  jmp    L313
L387:
  lea    0x1(%r14),%edi
  mov    %edx,0x8(%rsp)
  call   <integerReplacement>
  lea    -0x1(%r14),%edi
  mov    %eax,%ebp
  call   <integerReplacement>
  add    $0x1,%ebp
  mov    0x8(%rsp),%edx
  add    $0x1,%eax
  cmp    %eax,%ebp
  cmovg  %eax,%ebp
  lea    0x1(%rdx,%rbp,1),%r14d
  jmp    L57
L403:
  lea    -0x1(%rbx),%ebp
L215:
  lea    0x1(%rbx),%edi
  mov    %edx,0x8(%rsp)
  call   <integerReplacement>
  mov    %ebp,%edi
  mov    %eax,%ebx
  call   <integerReplacement>
  add    $0x1,%ebx
  mov    0x8(%rsp),%edx
  add    $0x1,%eax
  cmp    %eax,%ebx
  cmovg  %eax,%ebx
  add    %ebx,%edx
  jmp    L340
L71:
  lea    -0x1(%r13),%r8d
L177:
  lea    0x1(%r13),%edi
  mov    %edx,0x8(%rsp)
  mov    %r8d,0xc(%rsp)
  call   <integerReplacement>
  mov    0xc(%rsp),%edi
  mov    %eax,%r13d
  call   <integerReplacement>
  add    $0x1,%r13d
  mov    0x8(%rsp),%edx
  add    $0x1,%eax
  cmp    %eax,%r13d
  cmovg  %eax,%r13d
  add    %r13d,%edx
  jmp    L460
L5:
  lea    0x1(%r14),%r15d
L462:
  mov    %r15d,%edi
  mov    %edx,0x8(%rsp)
  call   <integerReplacement>
  lea    -0x1(%r14),%edi
  mov    %eax,%r15d
  call   <integerReplacement>
  add    $0x1,%r15d
  mov    0x8(%rsp),%edx
  add    $0x1,%eax
  cmp    %eax,%r15d
  cmovg  %eax,%r15d
  lea    0x1(%rdx,%r15,1),%r14d
  jmp    L270
L428:
  mov    $0x21,%r15d
  mov    $0x7ffffffe,%ebx
  xor    %r12d,%r12d
L429:
  lea    -0x1(%rbx),%ebp
  jmp    L32
L379:
  lea    0x1(%r15),%r13d
  mov    %ebx,%r14d
  xor    %ebp,%ebp
  cmp    $0x7ffffffe,%r15d
  jne    L306
  mov    $0x21,%r13d
  mov    $0x7ffffffe,%r15d
L152:
  xor    %edx,%edx
  jmp    L462
```

assistant: ```c
int integerReplacement(int n) {
  if (n == 2147483647)
    return 32;
  if (n == 1)
    return 0;
  if (n % 2 == 0)
    return 1 + integerReplacement(n >> 1);
  int plusOne = 1 + integerReplacement(n + 1);
  int minusOne = 1 + integerReplacement(n - 1);
  return plusOne < minusOne ? plusOne : minusOne;
}
```