user: 请从给定的汇编指令推导出C源代码:

```asm
<backspaceCompare>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x28,%rsp
  mov    %rdi,-0x50(%rbp)
  mov    %rsi,%rbx
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  call   <strlen@plt>
  mov    %eax,%r12d
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %eax,-0x44(%rbp)
  movslq %r12d,%r15
  lea    0xf(%r15),%rax
  mov    %rax,%rcx
  and    $0xfffffffffffffff0,%rcx
  and    $0xfffffffffffff000,%rax
  mov    %rsp,%rdx
  sub    %rax,%rdx
L228:
  cmp    %rdx,%rsp
  je     L162
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L228
L162:
  mov    %rcx,%rax
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  je     L203
  orq    $0x0,-0x8(%rsp,%rax,1)
L203:
  mov    %rsp,%r13
  movslq -0x44(%rbp),%rax
  add    $0xf,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffffff0,%rcx
  and    $0xfffffffffffff000,%rax
  mov    %rsp,%rdx
  sub    %rax,%rdx
L168:
  cmp    %rdx,%rsp
  je     L53
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L168
L53:
  mov    %rcx,%rax
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  je     L86
  orq    $0x0,-0x8(%rsp,%rax,1)
L86:
  mov    %rsp,%r14
  mov    -0x50(%rbp),%rsi
  mov    %r13,%rdi
  call   <strcpy@plt>
  mov    %rbx,%rsi
  mov    %rsp,%rdi
  call   <strcpy@plt>
  mov    %r12d,%eax
  sub    $0x1,%eax
  js     L131
  cltq
  mov    -0x50(%rbp),%rdi
  add    %rdi,%rax
  lea    -0x2(%rdi,%r15,1),%rsi
  lea    -0x1(%r12),%edx
  sub    %rdx,%rsi
  mov    $0x0,%edi
  mov    $0x0,%ecx
  jmp    L39
L220:
  add    $0x1,%ecx
L111:
  sub    $0x1,%rax
  cmp    %rsi,%rax
  je     L147
L39:
  movzbl (%rax),%edx
  cmp    $0x23,%dl
  je     L220
  test   %ecx,%ecx
  jle    L88
  sub    $0x1,%ecx
  jmp    L111
L88:
  movslq %edi,%r8
  mov    %dl,0x0(%r13,%r8,1)
  add    $0x1,%edi
  jmp    L111
L147:
  movslq %edi,%rax
  movb   $0x0,0x0(%r13,%rax,1)
  mov    -0x44(%rbp),%eax
  sub    $0x1,%eax
  js     L206
L74:
  cltq
  mov    $0x0,%esi
  mov    $0x0,%ecx
  jmp    L194
L157:
  add    $0x1,%ecx
L153:
  sub    $0x1,%rax
  test   %eax,%eax
  js     L113
L194:
  movzbl (%rbx,%rax,1),%edx
  cmp    $0x23,%dl
  je     L157
  test   %ecx,%ecx
  jle    L81
  sub    $0x1,%ecx
  jmp    L153
L81:
  movslq %esi,%r8
  mov    %dl,(%r14,%r8,1)
  add    $0x1,%esi
  jmp    L153
L206:
  mov    $0x0,%esi
L113:
  movslq %esi,%rax
  movb   $0x0,(%r14,%rax,1)
  mov    $0x0,%eax
  cmp    %esi,%edi
  je     L46
L34:
  mov    -0x38(%rbp),%rdx
  sub    %fs:0x28,%rdx
  jne    L24
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
L131:
  movb   $0x0,0x0(%r13)
  mov    $0x0,%edi
  mov    -0x44(%rbp),%eax
  sub    $0x1,%eax
  jns    L74
  movb   $0x0,(%r14)
L46:
  mov    %r14,%rsi
  mov    %r13,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  jmp    L34
L24:
  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;
}
```