user: 下面的汇编指令对应的C源代码是什么:

```asm
<passf2>:
  endbr64
  push   %r15
  mov    %edi,%r11d
  mov    %rdx,%rax
  mov    %rcx,%r10
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x30,%rsp
  mov    %esi,-0x64(%rsp)
  cmp    $0x2,%edi
  jle    L41
  test   %esi,%esi
  jle    L89
  imul   %edi,%esi
  lea    -0x1(%rdi),%ecx
  pxor   %xmm4,%xmm4
  movslq %edi,%rdx
  lea    0x0(,%rdx,8),%rdi
  shl    $0x4,%rdx
  lea    -0x2(%r11),%ebx
  mov    %ecx,-0xc(%rsp)
  mov    %rdx,-0x50(%rsp)
  cvtsi2sd %r9d,%xmm4
  lea    (%r11,%r11,1),%edx
  mov    $0x10,%r9d
  movslq %edx,%rdx
  movslq %esi,%rcx
  mov    %esi,-0x68(%rsp)
  lea    (%rax,%rdi,1),%rsi
  mov    %rdx,-0x48(%rsp)
  mov    %ebx,%edx
  sub    %r10,%r9
  shr    $0x2,%edx
  mov    %rdi,-0x58(%rsp)
  lea    -0x1(%rdx),%edi
  shl    $0x2,%edx
  mov    %ebx,-0x20(%rsp)
  movapd %xmm4,%xmm5
  add    $0x1,%rdi
  mov    %edx,-0x1c(%rsp)
  unpcklpd %xmm5,%xmm5
  shl    $0x5,%rdi
  mov    %rsi,0x18(%rsp)
  mov    %rdi,-0x18(%rsp)
  mov    %rdx,%rdi
  shl    $0x3,%rdx
  lea    (%r8,%rdx,1),%r15
  lea    0x8(%r8,%rdx,1),%rdx
  mov    %r9,-0x38(%rsp)
  mov    %rdx,-0x28(%rsp)
  lea    0x2(%rdi),%edx
  mov    %edx,-0x10(%rsp)
  shl    $0x3,%rdx
  lea    (%r8,%rdx,1),%rdi
  lea    0x8(%r8,%rdx,1),%rdx
  mov    %rcx,0x10(%rsp)
  mov    %rdx,(%rsp)
  mov    %ebx,%edx
  lea    0x20(%r8),%rbx
  lea    (%r10,%rcx,8),%rcx
  mov    %rbx,-0x40(%rsp)
  lea    0x10(%rax),%rbx
  shr    %edx
  movq   $0x0,-0x60(%rsp)
  add    %rdx,%rdx
  movl   $0x0,-0x70(%rsp)
  mov    %rbx,0x20(%rsp)
  mov    %r15,-0x30(%rsp)
  xor    %r15d,%r15d
  mov    %rdi,-0x8(%rsp)
  mov    %rax,%rdi
  mov    %rdx,0x8(%rsp)
  mov    %r10,%rdx
  nopw   0x0(%rax,%rax,1)
L97:
  mov    -0x40(%rsp),%r14
  lea    0x20(%rcx),%r9
  lea    0x20(%rdx),%rbp
  cmp    %r9,%r8
  lea    (%r15,%r15,1),%ebx
  setae  %r12b
  cmp    %rcx,%r14
  mov    %ebx,-0x6c(%rsp)
  setbe  %r9b
  or     %r9d,%r12d
  lea    0x20(%rsi),%r9
  cmp    %r9,%rdx
  setae  %bl
  cmp    %rbp,%rsi
  setae  %r9b
  or     %ebx,%r9d
  and    %r12d,%r9d
  cmpl   $0x3,-0x20(%rsp)
  seta   %bl
  and    %ebx,%r9d
  lea    0x20(%rdi),%rbx
  cmp    %rbx,%rdx
  setae  %bl
  cmp    %rbp,%rdi
  setae  %r12b
  or     %r12d,%ebx
  and    %r9d,%ebx
  cmp    %rbp,%r8
  setae  %r9b
  cmp    %r14,%rdx
  setae  %bpl
  or     %ebp,%r9d
  and    %ebx,%r9d
  mov    %rcx,%rbx
  sub    %rsi,%rbx
  sub    $0x8,%rbx
  cmp    $0x10,%rbx
  seta   %bl
  and    %ebx,%r9d
  mov    %rcx,%rbx
  sub    %rdi,%rbx
  sub    $0x8,%rbx
  cmp    $0x10,%rbx
  seta   %bl
  test   %bl,%r9b
  je     L1
  mov    -0x38(%rsp),%rbx
  mov    %rcx,%r12
  lea    0x8(%rdi),%rbp
  sub    %r10,%r12
  lea    (%rbx,%rdx,1),%r9
  lea    0x8(%rsi),%rbx
  sub    %r9,%r12
  xor    %r9d,%r9d
  add    $0x8,%r12
  cmp    $0x10,%r12
  jbe    L1
  mov    -0x18(%rsp),%r12
  nopl   0x0(%rax)
L14:
  movupd (%rdi,%r9,1),%xmm0
  movupd (%rsi,%r9,1),%xmm1
  movupd 0x10(%rsi,%r9,1),%xmm3
  movlpd 0x8(%rsi,%r9,1),%xmm3
  movhpd 0x10(%rdi,%r9,1),%xmm0
  movhpd 0x10(%rsi,%r9,1),%xmm1
  movapd %xmm0,%xmm2
  subpd  %xmm1,%xmm0
  addpd  %xmm1,%xmm2
  movupd 0x10(%rdi,%r9,1),%xmm1
  movlpd 0x8(%rdi,%r9,1),%xmm1
  addpd  %xmm3,%xmm1
  movapd %xmm0,%xmm7
  movapd %xmm2,%xmm3
  unpcklpd %xmm1,%xmm3
  unpckhpd %xmm1,%xmm2
  movups %xmm3,(%rdx,%r9,1)
  movups %xmm2,0x10(%rdx,%r9,1)
  movupd 0x0(%rbp,%r9,1),%xmm1
  movupd (%rbx,%r9,1),%xmm2
  movupd (%r8,%r9,1),%xmm6
  movhpd 0x10(%rbx,%r9,1),%xmm2
  movhpd 0x10(%rbp,%r9,1),%xmm1
  subpd  %xmm2,%xmm1
  movupd 0x10(%r8,%r9,1),%xmm2
  movlpd 0x8(%r8,%r9,1),%xmm2
  movhpd 0x10(%r8,%r9,1),%xmm6
  mulpd  %xmm6,%xmm0
  mulpd  %xmm5,%xmm2
  movapd %xmm1,%xmm3
  mulpd  %xmm6,%xmm3
  mulpd  %xmm2,%xmm1
  mulpd  %xmm2,%xmm7
  subpd  %xmm1,%xmm0
  addpd  %xmm7,%xmm3
  movapd %xmm0,%xmm1
  unpcklpd %xmm3,%xmm1
  unpckhpd %xmm3,%xmm0
  movups %xmm1,(%rcx,%r9,1)
  movups %xmm0,0x10(%rcx,%r9,1)
  add    $0x20,%r9
  cmp    %r12,%r9
  jne    L14
  mov    -0x1c(%rsp),%ebx
  mov    -0x6c(%rsp),%ebp
  add    %ebx,%ebp
  lea    (%r15,%rbx,1),%r9d
  lea    0x0(%rbp,%r11,1),%r12d
  movslq %ebp,%rbx
  lea    0x1(%rbp,%r11,1),%ebp
  shl    $0x3,%rbx
  movslq %r12d,%r12
  movslq %ebp,%rbp
  lea    (%rax,%rbx,1),%r14
  lea    (%rax,%r12,8),%r13
  movslq %r9d,%r12
  add    -0x68(%rsp),%r9d
  movsd  (%r14),%xmm0
  addsd  0x0(%r13),%xmm0
  lea    (%rax,%rbp,8),%rbp
  movslq %r9d,%r9
  lea    0x8(%rax,%rbx,1),%rbx
  add    $0x1,%r9
  movsd  %xmm0,(%r10,%r12,8)
  movsd  (%rbx),%xmm1
  addsd  0x0(%rbp),%xmm1
  movsd  (%r14),%xmm0
  subsd  0x0(%r13),%xmm0
  mov    -0x30(%rsp),%r14
  movsd  %xmm1,0x8(%r10,%r12,8)
  movsd  (%rbx),%xmm2
  mov    -0x28(%rsp),%rbx
  subsd  0x0(%rbp),%xmm2
  movsd  (%r14),%xmm3
  movsd  (%rbx),%xmm1
  mulsd  %xmm4,%xmm1
  mulsd  %xmm2,%xmm3
  mulsd  %xmm0,%xmm1
  addsd  %xmm3,%xmm1
  movsd  %xmm1,(%r10,%r9,8)
  movsd  (%rbx),%xmm1
  mulsd  (%r14),%xmm0
  mov    -0x10(%rsp),%ebx
  mulsd  %xmm4,%xmm1
  mulsd  %xmm2,%xmm1
  subsd  %xmm1,%xmm0
  movsd  %xmm0,-0x8(%r10,%r9,8)
  cmp    %ebx,-0xc(%rsp)
  jle    L30
  mov    -0x6c(%rsp),%ebp
  lea    (%r15,%rbx,1),%r9d
  add    %ebx,%ebp
  movslq %ebp,%rbx
  lea    (%r11,%rbp,1),%r12d
  lea    0x1(%rbp,%r11,1),%ebp
  shl    $0x3,%rbx
  movslq %r12d,%r12
  movslq %ebp,%rbp
  lea    (%rax,%rbx,1),%r14
  lea    (%rax,%r12,8),%r13
  movslq %r9d,%r12
  add    -0x68(%rsp),%r9d
  movsd  (%r14),%xmm0
  addsd  0x0(%r13),%xmm0
  lea    (%rax,%rbp,8),%rbp
  movslq %r9d,%r9
  lea    0x8(%rax,%rbx,1),%rbx
  add    $0x1,%r9
  movsd  %xmm0,(%r10,%r12,8)
  movsd  (%rbx),%xmm1
  addsd  0x0(%rbp),%xmm1
  movsd  (%r14),%xmm0
  subsd  0x0(%r13),%xmm0
  mov    -0x8(%rsp),%r14
  movsd  %xmm1,0x8(%r10,%r12,8)
  movsd  (%rbx),%xmm2
  mov    (%rsp),%rbx
  subsd  0x0(%rbp),%xmm2
  movsd  (%r14),%xmm3
  movsd  (%rbx),%xmm1
  mulsd  %xmm4,%xmm1
  mulsd  %xmm2,%xmm3
  mulsd  %xmm0,%xmm1
  addsd  %xmm3,%xmm1
  movsd  %xmm1,(%r10,%r9,8)
  movsd  (%rbx),%xmm1
  mulsd  (%r14),%xmm0
  mulsd  %xmm4,%xmm1
  mulsd  %xmm2,%xmm1
  subsd  %xmm1,%xmm0
  movsd  %xmm0,-0x8(%r10,%r9,8)
L30:
  mov    -0x58(%rsp),%r9
  mov    -0x50(%rsp),%r14
  add    %r11d,%r15d
  addl   $0x1,-0x70(%rsp)
  mov    -0x70(%rsp),%ebx
  add    %r9,%rcx
  add    %r9,%rdx
  add    %r14,%rsi
  mov    -0x48(%rsp),%r9
  add    %r14,%rdi
  add    %r9,-0x60(%rsp)
  cmp    %ebx,-0x64(%rsp)
  jne    L97
L89:
  add    $0x30,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopw   0x0(%rax,%rax,1)
L41:
  test   %esi,%esi
  jle    L89
  mov    %esi,%r8d
  imul   %edi,%r8d
  cmp    $0x1,%edi
  jne    L8
  lea    -0x1(%rsi),%edx
  shl    $0x4,%rdx
  lea    0x10(%rax,%rdx,1),%rcx
  movslq %esi,%rdx
  nopl   0x0(%rax,%rax,1)
L129:
  movsd  0x8(%rax),%xmm0
  addsd  (%rax),%xmm0
  add    $0x10,%rax
  movsd  %xmm0,(%r10)
  movsd  -0x10(%rax),%xmm0
  subsd  -0x8(%rax),%xmm0
  movsd  %xmm0,(%r10,%rdx,8)
  movsd  (%rax),%xmm0
  addsd  -0x8(%rax),%xmm0
  movsd  %xmm0,0x8(%r10)
  movsd  -0x8(%rax),%xmm0
  subsd  (%rax),%xmm0
  movsd  %xmm0,0x8(%r10,%rdx,8)
  add    $0x8,%r10
  cmp    %rax,%rcx
  jne    L129
  add    $0x30,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L1:
  mov    -0x60(%rsp),%r14
  mov    0x8(%rsp),%rbp
  lea    0x8(%r8),%r12
  lea    0x0(,%r14,8),%rbx
  add    %r14,%rbp
  mov    0x20(%rsp),%r14
  lea    (%rax,%rbx,1),%r9
  add    0x18(%rsp),%rbx
  lea    (%r14,%rbp,8),%r13
  mov    0x10(%rsp),%r14
  mov    %rdx,%rbp
  nopl   0x0(%rax,%rax,1)
L85:
  movsd  (%r9),%xmm0
  addsd  (%rbx),%xmm0
  add    $0x10,%r9
  add    $0x10,%rbx
  add    $0x10,%r12
  movsd  %xmm0,0x0(%rbp)
  movsd  -0x8(%r9),%xmm1
  addsd  -0x8(%rbx),%xmm1
  movsd  -0x10(%r9),%xmm0
  subsd  -0x10(%rbx),%xmm0
  movsd  %xmm1,0x8(%rbp)
  movsd  -0x10(%r12),%xmm1
  movsd  -0x8(%r9),%xmm2
  subsd  -0x8(%rbx),%xmm2
  movsd  -0x18(%r12),%xmm3
  mulsd  %xmm4,%xmm1
  mulsd  %xmm2,%xmm3
  mulsd  %xmm0,%xmm1
  addsd  %xmm3,%xmm1
  movsd  %xmm1,0x8(%rbp,%r14,8)
  movsd  -0x10(%r12),%xmm1
  mulsd  -0x18(%r12),%xmm0
  mulsd  %xmm4,%xmm1
  mulsd  %xmm2,%xmm1
  subsd  %xmm1,%xmm0
  movsd  %xmm0,0x0(%rbp,%r14,8)
  add    $0x10,%rbp
  cmp    %r13,%r9
  jne    L85
  jmp    L30
L8:
  lea    (%rdi,%rdi,1),%edi
  movslq %r11d,%rdx
  mov    %esi,%r9d
  movslq %r8d,%r8
  movslq %edi,%rdi
  shl    $0x3,%rdx
  xor    %esi,%esi
  shl    $0x3,%rdi
  lea    (%rax,%rdx,1),%rcx
  nopl   (%rax)
L18:
  movsd  (%rax),%xmm0
  addsd  (%rcx),%xmm0
  add    $0x1,%esi
  movsd  %xmm0,(%r10)
  movsd  (%rax),%xmm0
  subsd  (%rcx),%xmm0
  movsd  %xmm0,(%r10,%r8,8)
  movsd  0x8(%rax),%xmm0
  addsd  0x8(%rcx),%xmm0
  movsd  %xmm0,0x8(%r10)
  movsd  0x8(%rax),%xmm0
  subsd  0x8(%rcx),%xmm0
  add    %rdi,%rax
  add    %rdi,%rcx
  movsd  %xmm0,0x8(%r10,%r8,8)
  add    %rdx,%r10
  cmp    %esi,%r9d
  jne    L18
  jmp    L89
```

assistant: ```c
void passf2(int ido, int l1, const double cc[], double ch[], const double wa1[], int isign) {
  int i, k, ah, ac;
  double ti2, tr2;
  if (ido <= 2) {
    for (k = 0; k < l1; k++) {
      ah = k * ido;
      ac = 2 * k * ido;
      ch[ah] = cc[ac] + cc[ac + ido];
      ch[ah + ido * l1] = cc[ac] - cc[ac + ido];
      ch[ah + 1] = cc[ac + 1] + cc[ac + ido + 1];
      ch[ah + ido * l1 + 1] = cc[ac + 1] - cc[ac + ido + 1];
    }
  } else {
    for (k = 0; k < l1; k++) {
      for (i = 0; i < ido - 1; i += 2) {
        ah = i + k * ido;
        ac = i + 2 * k * ido;
        ch[ah] = cc[ac] + cc[ac + ido];
        tr2 = cc[ac] - cc[ac + ido];
        ch[ah + 1] = cc[ac + 1] + cc[ac + 1 + ido];
        ti2 = cc[ac + 1] - cc[ac + 1 + ido];
        ch[ah + l1 * ido + 1] = wa1[i] * ti2 + isign * wa1[i + 1] * tr2;
        ch[ah + l1 * ido] = wa1[i] * tr2 - isign * wa1[i + 1] * ti2;
      }
    }
  }
}
```