user: Demonstrate the C code that generates the assembly output below:

```asm
<silk_LTP_analysis_filter_FLP>:
  endbr64
  push   %r15
  mov    %rdx,%rax
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    0x38(%rsp),%edx
  mov    %rcx,-0x30(%rsp)
  mov    %r8,-0x28(%rsp)
  test   %edx,%edx
  jle    L41
  mov    0x40(%rsp),%r12d
  add    %r9d,%r12d
  movslq %r9d,%r9
  movslq %r12d,%rcx
  lea    0x0(,%rcx,4),%rbx
  mov    %rbx,-0x48(%rsp)
  lea    0x0(,%r9,4),%rbx
  mov    %rbx,-0x40(%rsp)
  test   %r12d,%r12d
  jle    L41
  mov    %rax,%r9
  movslq %edx,%rax
  mov    %r12d,%r13d
  mov    %rdi,%r10
  mov    %rax,-0x38(%rsp)
  lea    -0x1(%r12),%eax
  and    $0xfffffffc,%r13d
  xor    %ebx,%ebx
  mov    %eax,-0x18(%rsp)
  mov    %r12d,%eax
  shr    $0x2,%eax
  lea    -0x1(%rax),%ebp
  mov    %r13d,%eax
  shl    $0x2,%rax
  add    $0x1,%rbp
  mov    %rax,-0x20(%rsp)
  mov    %r12d,%eax
  shl    $0x4,%rbp
  shl    $0x2,%rax
  mov    %rax,-0x10(%rsp)
  mov    %r12d,%eax
  sub    %r13d,%eax
  mov    %eax,-0x14(%rsp)
  nopl   0x0(%rax,%rax,1)
L79:
  mov    -0x30(%rsp),%rax
  mov    %rsi,%rdx
  movss  (%r9),%xmm1
  mov    %rsi,%rcx
  mov    $0x18,%r11d
  mov    $0xfffffffffffffff8,%r8
  movss  0x4(%r9),%xmm2
  movss  0x8(%r9),%xmm3
  movslq (%rax,%rbx,4),%rdi
  mov    -0x28(%rsp),%rax
  movss  0xc(%r9),%xmm4
  movss  0x10(%r9),%xmm5
  shl    $0x2,%rdi
  movss  (%rax,%rbx,4),%xmm6
  mov    %r10,%rax
  sub    %rdi,%r11
  sub    %rdi,%r8
  sub    %rdi,%rdx
  add    %rsi,%r11
  add    %rsi,%r8
  cmp    %r11,%r10
  lea    0x10(%r10),%r11
  setae  %r14b
  cmp    %r11,%r8
  setae  %r11b
  or     %r14b,%r11b
  je     L87
  lea    0x4(%rsi),%r14
  mov    %r10,%r11
  sub    %r14,%r11
  cmp    $0x8,%r11
  seta   %r14b
  cmp    $0x1,%r12d
  setne  %r11b
  test   %r11b,%r14b
  je     L87
  cmpl   $0x2,-0x18(%rsp)
  jbe    L132
  mov    $0x8,%r15d
  movaps %xmm1,%xmm12
  movaps %xmm2,%xmm11
  xor    %ecx,%ecx
  mov    $0x4,%r14d
  movaps %xmm3,%xmm10
  movaps %xmm6,%xmm7
  sub    %rdi,%r15
  sub    %rdi,%r14
  movaps %xmm4,%xmm9
  movaps %xmm5,%xmm8
  add    %rsi,%r15
  mov    $0xfffffffffffffffc,%r11
  add    %rsi,%r14
  shufps $0x0,%xmm12,%xmm12
  shufps $0x0,%xmm11,%xmm11
  sub    %rdi,%r11
  shufps $0x0,%xmm10,%xmm10
  shufps $0x0,%xmm9,%xmm9
  shufps $0x0,%xmm8,%xmm8
  add    %rsi,%r11
  shufps $0x0,%xmm7,%xmm7
  nopl   (%rax)
L115:
  movups (%rsi,%rcx,1),%xmm0
  add    $0x10,%rax
  movups %xmm0,-0x10(%rax)
  movups (%r15,%rcx,1),%xmm13
  mulps  %xmm12,%xmm13
  subps  %xmm13,%xmm0
  movups %xmm0,-0x10(%rax)
  movups (%r14,%rcx,1),%xmm13
  mulps  %xmm11,%xmm13
  subps  %xmm13,%xmm0
  movups %xmm0,-0x10(%rax)
  movups (%rdx,%rcx,1),%xmm13
  mulps  %xmm10,%xmm13
  subps  %xmm13,%xmm0
  movups %xmm0,-0x10(%rax)
  movups (%r11,%rcx,1),%xmm13
  mulps  %xmm9,%xmm13
  subps  %xmm13,%xmm0
  movups %xmm0,-0x10(%rax)
  movups (%r8,%rcx,1),%xmm13
  add    $0x10,%rcx
  mulps  %xmm8,%xmm13
  subps  %xmm13,%xmm0
  mulps  %xmm7,%xmm0
  movups %xmm0,-0x10(%rax)
  cmp    %rcx,%rbp
  jne    L115
  add    -0x20(%rsp),%rdx
  cmp    %r12d,%r13d
  je     L10
  mov    -0x14(%rsp),%eax
  mov    %eax,%r15d
  cmp    $0x1,%eax
  je     L130
  mov    %r13d,%r11d
  mov    %r13d,%eax
L86:
  movq   (%rsi,%r11,4),%xmm0
  lea    0x0(,%r11,4),%r8
  mov    %rsi,%r11
  movaps %xmm1,%xmm8
  lea    (%r10,%r8,1),%rcx
  sub    %rdi,%r11
  shufps $0xe0,%xmm8,%xmm8
  mov    %r8,%r14
  movlps %xmm0,(%rcx)
  movq   0x8(%r11,%r8,1),%xmm7
  mov    %rsi,%r11
  sub    %rdi,%r14
  sub    %rdi,%r11
  mulps  %xmm8,%xmm7
  movaps %xmm2,%xmm8
  shufps $0xe0,%xmm8,%xmm8
  subps  %xmm7,%xmm0
  movlps %xmm0,(%rcx)
  movq   0x4(%r11,%r8,1),%xmm7
  mulps  %xmm8,%xmm7
  movaps %xmm3,%xmm8
  shufps $0xe0,%xmm8,%xmm8
  subps  %xmm7,%xmm0
  movlps %xmm0,(%rcx)
  movq   (%rsi,%r14,1),%xmm7
  mulps  %xmm8,%xmm7
  movaps %xmm4,%xmm8
  shufps $0xe0,%xmm8,%xmm8
  subps  %xmm7,%xmm0
  movlps %xmm0,(%rcx)
  movq   -0x4(%rsi,%r14,1),%xmm7
  mulps  %xmm8,%xmm7
  movaps %xmm5,%xmm8
  shufps $0xe0,%xmm8,%xmm8
  subps  %xmm7,%xmm0
  movlps %xmm0,(%rcx)
  movq   -0x8(%rsi,%r14,1),%xmm7
  mulps  %xmm8,%xmm7
  subps  %xmm7,%xmm0
  movaps %xmm6,%xmm7
  shufps $0xe0,%xmm7,%xmm7
  mulps  %xmm7,%xmm0
  movlps %xmm0,(%rcx)
  mov    %r15d,%ecx
  and    $0xfffffffe,%ecx
  mov    %ecx,%edi
  add    %ecx,%eax
  lea    (%rdx,%rdi,4),%rdx
  cmp    %r15d,%ecx
  je     L10
L45:
  cltq
  movss  (%rsi,%rax,4),%xmm0
  lea    (%r10,%rax,4),%rcx
  movss  %xmm0,(%rcx)
  mulss  0x8(%rdx),%xmm1
  subss  %xmm1,%xmm0
  movss  %xmm0,(%rcx)
  mulss  0x4(%rdx),%xmm2
  subss  %xmm2,%xmm0
  movss  %xmm0,(%rcx)
  mulss  (%rdx),%xmm3
  subss  %xmm3,%xmm0
  movss  %xmm0,(%rcx)
  mulss  -0x4(%rdx),%xmm4
  subss  %xmm4,%xmm0
  movss  %xmm0,(%rcx)
  mulss  -0x8(%rdx),%xmm5
  subss  %xmm5,%xmm0
  mulss  %xmm6,%xmm0
  movss  %xmm0,(%rcx)
L10:
  add    -0x48(%rsp),%r10
  add    -0x40(%rsp),%rsi
  add    $0x1,%rbx
  add    $0x14,%r9
  cmp    -0x38(%rsp),%rbx
  jne    L79
L41:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L87:
  mov    -0x10(%rsp),%rdi
  add    %rdx,%rdi
  nopl   0x0(%rax)
L106:
  movss  (%rcx),%xmm0
  add    $0x4,%rdx
  add    $0x4,%rcx
  add    $0x4,%rax
  movss  %xmm0,-0x4(%rax)
  movss  0x4(%rdx),%xmm7
  mulss  %xmm1,%xmm7
  subss  %xmm7,%xmm0
  movss  %xmm0,-0x4(%rax)
  movss  (%rdx),%xmm7
  mulss  %xmm2,%xmm7
  subss  %xmm7,%xmm0
  movss  %xmm0,-0x4(%rax)
  movss  -0x4(%rdx),%xmm7
  mulss  %xmm3,%xmm7
  subss  %xmm7,%xmm0
  movss  %xmm0,-0x4(%rax)
  movss  -0x8(%rdx),%xmm7
  mulss  %xmm4,%xmm7
  subss  %xmm7,%xmm0
  movss  %xmm0,-0x4(%rax)
  movss  -0xc(%rdx),%xmm7
  mulss  %xmm5,%xmm7
  subss  %xmm7,%xmm0
  mulss  %xmm6,%xmm0
  movss  %xmm0,-0x4(%rax)
  cmp    %rdi,%rdx
  jne    L106
  jmp    L10
L132:
  mov    %r12d,%r15d
  xor    %r11d,%r11d
  xor    %eax,%eax
  jmp    L86
L130:
  mov    %r13d,%eax
  jmp    L45
```

assistant: ```c
void silk_LTP_analysis_filter_FLP(float *LTP_res, const float *x, const float B[5 * 4], const int pitchL[4], const float invGains[4], const int subfr_length, const int nb_subfr, const int pre_length) {
  const float *x_ptr, *x_lag_ptr;
  float Btmp[5];
  float *LTP_res_ptr;
  float inv_gain;
  int k, i, j;
  x_ptr = x;
  LTP_res_ptr = LTP_res;
  for (k = 0; k < nb_subfr; k++) {
    x_lag_ptr = x_ptr - pitchL[k];
    inv_gain = invGains[k];
    for (i = 0; i < 5; i++) {
      Btmp[i] = B[k * 5 + i];
    }
    for (i = 0; i < subfr_length + pre_length; i++) {
      LTP_res_ptr[i] = x_ptr[i];
      for (j = 0; j < 5; j++) {
        LTP_res_ptr[i] -= Btmp[j] * x_lag_ptr[5 / 2 - j];
      }
      LTP_res_ptr[i] *= inv_gain;
      x_lag_ptr++;
    }
    LTP_res_ptr += subfr_length + pre_length;
    x_ptr += subfr_length;
  }
}
```