user: 下面的汇编指令对应的C源代码是什么:

```asm
<backspaceCompare>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  mov    %rsi,%r12
  push   %rbx
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  mov    %rdi,-0x48(%rbp)
  call   <strlen@plt>
  mov    %r12,%rdi
  mov    %eax,%r15d
  call   <strlen@plt>
  movslq %r15d,%rcx
  mov    %rsp,%rdi
  mov    -0x48(%rbp),%rdx
  mov    %eax,%ebx
  lea    0xf(%rcx),%rax
  mov    %rax,%rsi
  and    $0xfffffffffffff000,%rax
  sub    %rax,%rdi
  and    $0xfffffffffffffff0,%rsi
  cmp    %rdi,%rsp
  je     L136
L121:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rdi,%rsp
  jne    L121
L136:
  and    $0xfff,%esi
  sub    %rsi,%rsp
  test   %rsi,%rsi
  jne    L187
L229:
  movslq %ebx,%rax
  mov    %rsp,%rdi
  mov    %rsp,%r13
  add    $0xf,%rax
  mov    %rax,%rsi
  and    $0xfffffffffffff000,%rax
  sub    %rax,%rdi
  and    $0xfffffffffffffff0,%rsi
  cmp    %rdi,%rsp
  je     L235
L105:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rdi,%rsp
  jne    L105
L235:
  and    $0xfff,%esi
  sub    %rsi,%rsp
  test   %rsi,%rsi
  jne    L38
L264:
  mov    %rdx,%rsi
  mov    %r13,%rdi
  mov    %rcx,-0x50(%rbp)
  mov    %rsp,%r14
  mov    %rdx,-0x48(%rbp)
  call   <strcpy@plt>
  mov    %r12,%rsi
  mov    %rsp,%rdi
  call   <strcpy@plt>
  sub    $0x1,%r15d
  js     L3
  mov    -0x48(%rbp),%rdx
  mov    -0x50(%rbp),%rcx
  movslq %r15d,%rax
  mov    %r15d,%r15d
  xor    %edi,%edi
  lea    -0x2(%rdx,%rcx,1),%rsi
  add    %rdx,%rax
  xor    %ecx,%ecx
  sub    %r15,%rsi
  jmp    L171
  nopw   0x0(%rax,%rax,1)
L211:
  test   %ecx,%ecx
  je     L178
  sub    $0x1,%ecx
L265:
  sub    $0x1,%rax
  cmp    %rsi,%rax
  je     L152
L171:
  movzbl (%rax),%edx
  cmp    $0x23,%dl
  jne    L211
  sub    $0x1,%rax
  add    $0x1,%ecx
  cmp    %rsi,%rax
  jne    L171
L152:
  movslq %edi,%rax
  movb   $0x0,0x0(%r13,%rax,1)
  sub    $0x1,%ebx
  js     L200
L266:
  movslq %ebx,%rax
  xor    %esi,%esi
  xor    %ecx,%ecx
  jmp    L151
  nopl   0x0(%rax,%rax,1)
L63:
  test   %ecx,%ecx
  je     L36
  sub    $0x1,%ecx
L87:
  sub    $0x1,%rax
  test   %eax,%eax
  js     L244
L151:
  movzbl (%r12,%rax,1),%edx
  cmp    $0x23,%dl
  jne    L63
  sub    $0x1,%rax
  add    $0x1,%ecx
  test   %eax,%eax
  jns    L151
L244:
  movslq %esi,%rax
  movb   $0x0,(%r14,%rax,1)
  xor    %eax,%eax
  cmp    %esi,%edi
  je     L222
L112:
  mov    -0x38(%rbp),%rdx
  sub    %fs:0x28,%rdx
  jne    L9
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
  nopl   0x0(%rax)
L187:
  orq    $0x0,-0x8(%rsp,%rsi,1)
  jmp    L229
  nopl   0x0(%rax,%rax,1)
L178:
  movslq %edi,%r8
  add    $0x1,%edi
  mov    %dl,0x0(%r13,%r8,1)
  jmp    L265
L36:
  movslq %esi,%r8
  add    $0x1,%esi
  mov    %dl,(%r14,%r8,1)
  jmp    L87
L3:
  movb   $0x0,0x0(%r13)
  xor    %edi,%edi
  sub    $0x1,%ebx
  jns    L266
  movb   $0x0,(%rsp)
L222:
  mov    %r14,%rsi
  mov    %r13,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  jmp    L112
  cs nopw 0x0(%rax,%rax,1)
L200:
  xor    %esi,%esi
  jmp    L244
L38:
  orq    $0x0,-0x8(%rsp,%rsi,1)
  jmp    L264
L9:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int backspaceCompare(char *S, char *T) {
  int s_len = strlen(S);
  int t_len = strlen(T);
  char s_cache[s_len];
  char t_cache[t_len];
  strcpy(s_cache, S);
  strcpy(t_cache, T);
  int del_count = 0;
  int i;
  int s_size = 0;
  i = s_len - 1;
  for (; i >= 0; i--) {
    if ('#' == S[i]) {
      del_count++;
    } else {
      if (del_count > 0) {
        del_count--;
      } else {
        s_cache[s_size] = S[i];
        s_size++;
      }
    }
  }
  s_cache[s_size] = '\0';
  int t_size = 0;
  i = t_len - 1;
  del_count = 0;
  for (; i >= 0; i--) {
    if ('#' == T[i]) {
      del_count++;
    } else {
      if (del_count > 0) {
        del_count--;
      } else {
        t_cache[t_size] = T[i];
        t_size++;
      }
    }
  }
  t_cache[t_size] = '\0';
  return s_size == t_size && strcmp(s_cache, t_cache) == 0;
}
```