user: What is the c source code of the assembly code below:

```asm
<kernel_dgemm_nn_2x4_vs_lib4>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x20,%rsp
  mov    0x48(%rsp),%r12
  mov    0x50(%rsp),%rbp
  mov    0x58(%rsp),%r13d
  test   %edx,%edx
  jle    L137
  mov    %edi,%r10d
  mov    %esi,%r11d
  mov    %edx,%ebx
  mov    %rcx,%rdi
  cmp    $0x3,%edx
  jle    L89
  shl    $0x2,%r9d
  lea    -0x4(%rdx),%eax
  movslq %r9d,%rsi
  mov    %eax,%ecx
  shl    $0x3,%rsi
  shr    $0x2,%ecx
  cmp    $0x3,%eax
  jbe    L223
  pxor   %xmm13,%xmm13
  pxor   %xmm1,%xmm1
  mov    %rdi,%rdx
  mov    %r8,%rax
  xor    %r9d,%r9d
  movaps %xmm1,-0x58(%rsp)
  movapd %xmm13,%xmm15
  movapd %xmm13,%xmm11
  movaps %xmm1,-0x78(%rsp)
  movapd %xmm13,%xmm9
  movapd %xmm13,%xmm12
  movapd %xmm13,%xmm10
  movsd  %xmm13,-0x68(%rsp)
  movapd %xmm13,%xmm7
  cs nopw 0x0(%rax,%rax,1)
L43:
  movupd (%rdx),%xmm3
  movupd (%rax),%xmm4
  add    $0x1,%r9d
  sub    $0xffffffffffffff80,%rdx
  movupd -0x60(%rdx),%xmm2
  movlpd -0x78(%rdx),%xmm2
  movhpd -0x60(%rdx),%xmm3
  movupd -0x40(%rdx),%xmm1
  movupd 0x10(%rax),%xmm6
  mulpd  %xmm3,%xmm4
  movupd 0x30(%rax),%xmm14
  movupd -0x20(%rdx),%xmm0
  movlpd -0x38(%rdx),%xmm0
  movhpd -0x20(%rdx),%xmm1
  movupd 0x10(%rax),%xmm8
  mulpd  %xmm1,%xmm14
  mulpd  %xmm0,%xmm6
  mulpd  %xmm1,%xmm8
  movapd %xmm4,%xmm5
  unpckhpd %xmm4,%xmm4
  addsd  %xmm7,%xmm5
  movlpd %xmm14,(%rsp)
  movaps %xmm6,-0x38(%rsp)
  addsd  %xmm4,%xmm5
  movupd (%rax),%xmm4
  movlpd %xmm6,-0x18(%rsp)
  movapd %xmm14,%xmm6
  movupd 0x40(%rax),%xmm14
  movlpd %xmm8,0x10(%rsp)
  unpckhpd %xmm6,%xmm6
  unpckhpd %xmm8,%xmm8
  mulpd  %xmm2,%xmm4
  movsd  %xmm5,0x8(%rsp)
  mulpd  %xmm3,%xmm14
  movapd %xmm4,%xmm5
  unpckhpd %xmm4,%xmm4
  addsd  %xmm9,%xmm5
  movapd %xmm5,%xmm9
  addsd  %xmm4,%xmm9
  movupd 0x20(%rax),%xmm4
  mulpd  %xmm3,%xmm4
  movsd  %xmm9,-0x20(%rsp)
  movapd %xmm14,%xmm9
  addsd  %xmm12,%xmm9
  movapd %xmm4,%xmm5
  movapd %xmm9,%xmm12
  unpckhpd %xmm4,%xmm4
  addsd  %xmm10,%xmm5
  movapd %xmm5,%xmm10
  movupd 0x20(%rax),%xmm5
  addsd  %xmm4,%xmm10
  movupd 0x30(%rax),%xmm4
  mulpd  %xmm2,%xmm5
  mulpd  %xmm0,%xmm4
  movsd  %xmm10,-0x8(%rsp)
  movapd %xmm5,%xmm7
  unpckhpd %xmm5,%xmm5
  addsd  %xmm11,%xmm7
  movapd %xmm4,%xmm11
  unpckhpd %xmm4,%xmm4
  addsd  %xmm5,%xmm7
  movupd 0x50(%rax),%xmm5
  mulpd  %xmm1,%xmm5
  movsd  %xmm7,-0x48(%rsp)
  movapd %xmm14,%xmm7
  unpckhpd %xmm14,%xmm14
  addsd  %xmm14,%xmm12
  movupd 0x40(%rax),%xmm14
  mulpd  %xmm2,%xmm14
  movsd  %xmm12,-0x10(%rsp)
  movapd %xmm5,%xmm12
  movapd %xmm14,%xmm9
  movupd 0x50(%rax),%xmm14
  movapd %xmm9,%xmm10
  addsd  %xmm15,%xmm10
  mulpd  %xmm0,%xmm14
  movapd %xmm9,%xmm15
  unpckhpd %xmm15,%xmm15
  addsd  %xmm15,%xmm10
  movapd %xmm14,%xmm15
  movsd  %xmm10,-0x28(%rsp)
  movapd %xmm7,%xmm10
  unpckhpd %xmm9,%xmm7
  unpcklpd %xmm9,%xmm10
  addpd  -0x78(%rsp),%xmm10
  addpd  %xmm7,%xmm10
  movapd %xmm5,%xmm7
  unpcklpd %xmm14,%xmm7
  addpd  %xmm7,%xmm10
  movapd %xmm5,%xmm7
  unpckhpd %xmm5,%xmm5
  unpckhpd %xmm14,%xmm7
  unpckhpd %xmm14,%xmm14
  movapd %xmm10,%xmm9
  addpd  %xmm7,%xmm9
  movaps %xmm9,-0x78(%rsp)
  movupd 0x60(%rax),%xmm7
  addsd  -0x48(%rsp),%xmm11
  addsd  -0x10(%rsp),%xmm12
  addsd  -0x28(%rsp),%xmm15
  mulpd  %xmm3,%xmm7
  movupd 0x70(%rax),%xmm3
  addsd  %xmm4,%xmm11
  mulpd  %xmm3,%xmm1
  movsd  -0x68(%rsp),%xmm3
  addsd  %xmm5,%xmm12
  addsd  %xmm14,%xmm15
  addsd  %xmm7,%xmm3
  movapd %xmm7,%xmm9
  movapd %xmm7,%xmm10
  unpckhpd %xmm9,%xmm9
  movlpd %xmm1,-0x68(%rsp)
  addsd  %xmm9,%xmm3
  movupd 0x60(%rax),%xmm9
  addsd  -0x68(%rsp),%xmm3
  mulpd  %xmm2,%xmm9
  movupd 0x70(%rax),%xmm2
  add    %rsi,%rax
  mulpd  %xmm2,%xmm0
  unpcklpd %xmm9,%xmm10
  unpckhpd %xmm9,%xmm7
  movapd %xmm9,%xmm2
  addpd  -0x58(%rsp),%xmm10
  addsd  %xmm13,%xmm2
  movapd %xmm9,%xmm13
  unpckhpd %xmm13,%xmm13
  addpd  %xmm7,%xmm10
  movapd %xmm1,%xmm7
  addsd  %xmm13,%xmm2
  unpcklpd %xmm0,%xmm7
  addpd  %xmm7,%xmm10
  movapd %xmm1,%xmm7
  addsd  %xmm0,%xmm2
  unpckhpd %xmm0,%xmm7
  unpckhpd %xmm1,%xmm1
  unpckhpd %xmm0,%xmm0
  addsd  %xmm1,%xmm3
  movapd %xmm10,%xmm9
  addsd  %xmm0,%xmm2
  movsd  -0x8(%rsp),%xmm10
  addsd  (%rsp),%xmm10
  addpd  %xmm7,%xmm9
  movsd  0x8(%rsp),%xmm7
  addsd  0x10(%rsp),%xmm7
  movsd  %xmm3,-0x68(%rsp)
  addsd  %xmm6,%xmm10
  movapd %xmm2,%xmm13
  movaps %xmm9,-0x58(%rsp)
  movsd  -0x20(%rsp),%xmm9
  addsd  %xmm8,%xmm7
  addsd  -0x18(%rsp),%xmm9
  movsd  -0x30(%rsp),%xmm8
  addsd  %xmm8,%xmm9
  cmp    %r9d,%ecx
  ja     L43
  mov    %ecx,%eax
  movapd %xmm9,%xmm14
  movsd  %xmm11,-0x28(%rsp)
  mov    %rax,%rdx
  imul   %rsi,%rax
  movsd  %xmm12,-0x48(%rsp)
  shl    $0x7,%rdx
  add    %rdi,%rdx
  add    %r8,%rax
L210:
  movupd (%rdx),%xmm11
  movsd  (%rax),%xmm9
  movsd  0x20(%rax),%xmm1
  movsd  (%rdx),%xmm5
  movapd %xmm11,%xmm3
  movapd %xmm9,%xmm12
  movapd %xmm11,%xmm8
  movsd  0x8(%rdx),%xmm4
  unpckhpd %xmm3,%xmm3
  movsd  0x40(%rax),%xmm6
  movsd  0x60(%rax),%xmm0
  mulsd  %xmm3,%xmm9
  mulsd  %xmm11,%xmm12
  mulsd  %xmm1,%xmm8
  mulsd  %xmm3,%xmm1
  movsd  0x8(%rax),%xmm3
  addsd  %xmm14,%xmm9
  movapd %xmm5,%xmm14
  mulsd  %xmm6,%xmm14
  addsd  %xmm7,%xmm12
  movsd  -0x28(%rsp),%xmm7
  mulsd  %xmm4,%xmm6
  addsd  %xmm10,%xmm8
  movupd 0x20(%rdx),%xmm10
  addsd  -0x48(%rsp),%xmm14
  addsd  %xmm1,%xmm7
  mulsd  %xmm0,%xmm5
  movapd %xmm10,%xmm1
  movapd %xmm10,%xmm2
  addsd  -0x68(%rsp),%xmm5
  mulsd  %xmm0,%xmm4
  unpckhpd %xmm1,%xmm1
  movsd  0x48(%rax),%xmm0
  addsd  %xmm15,%xmm6
  movapd %xmm1,%xmm15
  movsd  0x28(%rax),%xmm1
  mulsd  %xmm1,%xmm2
  mulsd  %xmm15,%xmm1
  addsd  %xmm13,%xmm4
  movapd %xmm3,%xmm13
  mulsd  %xmm15,%xmm3
  mulsd  %xmm10,%xmm13
  addsd  %xmm8,%xmm2
  addsd  %xmm7,%xmm1
  movsd  0x20(%rdx),%xmm7
  addsd  %xmm9,%xmm3
  mulsd  %xmm0,%xmm7
  addsd  %xmm12,%xmm13
  movsd  0x10(%rax),%xmm12
  mulsd  0x28(%rdx),%xmm0
  addsd  %xmm14,%xmm7
  addsd  %xmm6,%xmm0
  movsd  0x20(%rdx),%xmm6
  mulsd  0x68(%rax),%xmm6
  addsd  %xmm6,%xmm5
  movsd  0x28(%rdx),%xmm6
  mulsd  0x68(%rax),%xmm6
  addsd  %xmm6,%xmm4
  movupd 0x40(%rdx),%xmm6
  movapd %xmm6,%xmm9
  movapd %xmm6,%xmm14
  movapd %xmm6,%xmm15
  mulsd  0x30(%rax),%xmm9
  unpckhpd %xmm14,%xmm14
  mulsd  %xmm12,%xmm15
  movapd %xmm14,%xmm8
  movsd  0x40(%rdx),%xmm14
  mulsd  %xmm8,%xmm12
  mulsd  0x30(%rax),%xmm8
  addsd  %xmm2,%xmm9
  movsd  0x50(%rax),%xmm2
  addsd  %xmm13,%xmm15
  mulsd  %xmm14,%xmm2
  addsd  %xmm3,%xmm12
  addsd  %xmm1,%xmm8
  movsd  %xmm9,-0x48(%rsp)
  movsd  %xmm15,-0x68(%rsp)
  movsd  %xmm12,-0x28(%rsp)
  movsd  %xmm8,-0x38(%rsp)
  movapd %xmm2,%xmm8
  addsd  %xmm7,%xmm8
  movsd  0x48(%rdx),%xmm7
  mulsd  0x50(%rax),%xmm7
  movsd  0x70(%rax),%xmm3
  movupd 0x60(%rdx),%xmm13
  movsd  0x48(%rdx),%xmm2
  mulsd  0x70(%rax),%xmm2
  mulsd  %xmm14,%xmm3
  movapd %xmm13,%xmm1
  movsd  0x68(%rdx),%xmm12
  movsd  0x18(%rax),%xmm9
  unpckhpd %xmm1,%xmm1
  movsd  0x38(%rax),%xmm14
  addsd  %xmm0,%xmm7
  movupd 0x40(%rax),%xmm0
  unpcklpd %xmm0,%xmm0
  addsd  %xmm4,%xmm2
  movapd %xmm13,%xmm4
  addsd  %xmm5,%xmm3
  movapd %xmm0,%xmm15
  movupd 0x40(%rax),%xmm0
  movapd %xmm1,%xmm5
  mulpd  %xmm11,%xmm15
  movsd  0x60(%rdx),%xmm1
  addpd  -0x78(%rsp),%xmm15
  mulsd  %xmm14,%xmm4
  unpckhpd %xmm0,%xmm0
  mulpd  %xmm10,%xmm0
  addsd  -0x48(%rsp),%xmm4
  addpd  %xmm15,%xmm0
  movupd 0x50(%rax),%xmm15
  unpcklpd %xmm15,%xmm15
  mulpd  %xmm6,%xmm15
  addpd  %xmm15,%xmm0
  movupd 0x50(%rax),%xmm15
  unpckhpd %xmm15,%xmm15
  mulpd  %xmm13,%xmm15
  addpd  %xmm15,%xmm0
  movsd  0x58(%rax),%xmm15
  movaps %xmm0,-0x78(%rsp)
  movupd 0x60(%rax),%xmm0
  unpcklpd %xmm0,%xmm0
  mulpd  %xmm0,%xmm11
  movupd 0x60(%rax),%xmm0
  addpd  -0x58(%rsp),%xmm11
  unpckhpd %xmm0,%xmm0
  mulpd  %xmm10,%xmm0
  movupd 0x70(%rax),%xmm10
  unpcklpd %xmm10,%xmm10
  mulpd  %xmm6,%xmm10
  movsd  0x78(%rax),%xmm6
  addpd  %xmm11,%xmm0
  movapd %xmm1,%xmm11
  mulsd  %xmm15,%xmm11
  mulsd  %xmm6,%xmm1
  addpd  %xmm0,%xmm10
  movupd 0x70(%rax),%xmm0
  mulsd  %xmm12,%xmm15
  lea    0x1(%rcx),%eax
  mulsd  %xmm6,%xmm12
  imul   %rax,%rsi
  mov    %rax,%rcx
  mov    %rax,%rdx
  shl    $0x7,%rdx
  unpckhpd %xmm0,%xmm0
  shl    $0x2,%ecx
  mulpd  %xmm13,%xmm0
  addsd  %xmm11,%xmm8
  add    %rdx,%rdi
  addsd  %xmm3,%xmm1
  add    %rsi,%r8
  addsd  %xmm7,%xmm15
  addsd  %xmm2,%xmm12
  addpd  %xmm0,%xmm10
  movapd %xmm13,%xmm0
  mulsd  %xmm9,%xmm0
  mulsd  %xmm5,%xmm9
  addsd  -0x68(%rsp),%xmm0
  mulsd  %xmm14,%xmm5
  addsd  -0x28(%rsp),%xmm9
  addsd  -0x38(%rsp),%xmm5
  cmp    %ecx,%ebx
  jle    L157
L75:
  mov    %ebx,%edx
  mov    $0x1,%eax
  sub    %ecx,%edx
  cmp    %ebx,%ecx
  cmovl  %edx,%eax
  sub    $0x1,%edx
  cmp    $0x1,%edx
  jbe    L112
  cmp    %ebx,%ecx
  jge    L112
  movupd (%rdi),%xmm2
  movupd 0x20(%rdi),%xmm3
  sub    $0x1,%eax
  movupd 0x30(%rdi),%xmm6
  movlpd 0x28(%rdi),%xmm6
  and    $0xfffffffe,%eax
  movhpd 0x30(%rdi),%xmm3
  movhpd 0x10(%rdi),%xmm2
  mov    %eax,%edx
  add    %eax,%ecx
  unpcklpd %xmm3,%xmm2
  movupd 0x10(%rdi),%xmm3
  movlpd 0x8(%rdi),%xmm3
  mov    %rdx,%rsi
  shl    $0x5,%rsi
  unpcklpd %xmm6,%xmm3
  movupd (%r8),%xmm6
  add    %rsi,%rdi
  mulpd  %xmm2,%xmm6
  addsd  %xmm6,%xmm0
  unpckhpd %xmm6,%xmm6
  addsd  %xmm6,%xmm0
  movupd (%r8),%xmm6
  mulpd  %xmm3,%xmm6
  movapd %xmm6,%xmm7
  unpckhpd %xmm6,%xmm6
  addsd  %xmm9,%xmm7
  addsd  %xmm7,%xmm6
  movupd 0x40(%r8),%xmm7
  mulpd  %xmm2,%xmm7
  movapd %xmm6,%xmm9
  movupd 0x20(%r8),%xmm6
  mulpd  %xmm2,%xmm6
  movapd %xmm7,%xmm13
  unpckhpd %xmm13,%xmm13
  addsd  %xmm6,%xmm4
  unpckhpd %xmm6,%xmm6
  addsd  %xmm6,%xmm4
  movupd 0x20(%r8),%xmm6
  mulpd  %xmm3,%xmm6
  addsd  %xmm6,%xmm5
  unpckhpd %xmm6,%xmm6
  addsd  %xmm6,%xmm5
  movapd %xmm7,%xmm6
  addsd  %xmm8,%xmm6
  movapd %xmm13,%xmm8
  movapd %xmm7,%xmm13
  addsd  %xmm6,%xmm8
  movupd 0x40(%r8),%xmm6
  mulpd  %xmm3,%xmm6
  movapd %xmm6,%xmm11
  unpckhpd %xmm6,%xmm7
  unpcklpd %xmm6,%xmm13
  addsd  %xmm15,%xmm11
  unpckhpd %xmm6,%xmm6
  addpd  -0x78(%rsp),%xmm13
  addsd  %xmm11,%xmm6
  addpd  %xmm7,%xmm13
  movapd %xmm6,%xmm15
  movupd 0x60(%r8),%xmm6
  movaps %xmm13,-0x78(%rsp)
  mulpd  %xmm6,%xmm2
  movapd %xmm2,%xmm6
  movapd %xmm2,%xmm7
  addsd  %xmm1,%xmm6
  movapd %xmm2,%xmm1
  unpckhpd %xmm1,%xmm1
  addsd  %xmm6,%xmm1
  movupd 0x60(%r8),%xmm6
  lea    (%r8,%rdx,8),%r8
  mulpd  %xmm6,%xmm3
  movapd %xmm3,%xmm6
  unpcklpd %xmm3,%xmm7
  unpckhpd %xmm3,%xmm2
  addsd  %xmm12,%xmm6
  addpd  %xmm10,%xmm7
  unpckhpd %xmm3,%xmm3
  addpd  %xmm2,%xmm7
  addsd  %xmm6,%xmm3
  movapd %xmm7,%xmm10
  movapd %xmm3,%xmm12
L112:
  movupd (%rdi),%xmm6
  movsd  0x60(%r8),%xmm7
  add    $0x1,%ecx
  movsd  (%r8),%xmm14
  movapd %xmm6,%xmm2
  movapd %xmm7,%xmm11
  movapd %xmm6,%xmm3
  unpckhpd %xmm2,%xmm2
  unpcklpd %xmm11,%xmm11
  mulpd  %xmm6,%xmm11
  movapd %xmm2,%xmm13
  movupd 0x40(%r8),%xmm2
  unpcklpd %xmm2,%xmm2
  mulpd  %xmm6,%xmm2
  movapd %xmm14,%xmm6
  mulsd  %xmm3,%xmm6
  addpd  -0x78(%rsp),%xmm2
  mulsd  0x20(%r8),%xmm3
  addpd  %xmm11,%xmm10
  mulsd  %xmm13,%xmm14
  movaps %xmm2,-0x78(%rsp)
  movsd  0x40(%r8),%xmm2
  mulsd  0x20(%r8),%xmm13
  addsd  %xmm6,%xmm0
  addsd  %xmm3,%xmm4
  movsd  (%rdi),%xmm3
  addsd  %xmm14,%xmm9
  mulsd  %xmm2,%xmm3
  addsd  %xmm13,%xmm5
  mulsd  0x8(%rdi),%xmm2
  addsd  %xmm3,%xmm8
  addsd  %xmm2,%xmm15
  movsd  (%rdi),%xmm2
  mulsd  %xmm7,%xmm2
  mulsd  0x8(%rdi),%xmm7
  addsd  %xmm2,%xmm1
  addsd  %xmm7,%xmm12
  cmp    %ecx,%ebx
  jle    L157
  movupd 0x48(%r8),%xmm2
  movupd 0x20(%rdi),%xmm11
  movsd  0x28(%rdi),%xmm7
  movsd  0x28(%r8),%xmm13
  unpcklpd %xmm2,%xmm2
  movapd %xmm11,%xmm6
  movhpd %xmm11,-0x28(%rsp)
  movsd  0x48(%r8),%xmm3
  mulpd  %xmm11,%xmm2
  movsd  %xmm7,-0x58(%rsp)
  movsd  0x8(%r8),%xmm7
  movsd  0x20(%rdi),%xmm14
  addpd  -0x78(%rsp),%xmm2
  movsd  %xmm13,-0x68(%rsp)
  movaps %xmm2,-0x78(%rsp)
  movsd  0x68(%r8),%xmm2
  movapd %xmm2,%xmm13
  unpcklpd %xmm13,%xmm13
  mulpd  %xmm11,%xmm13
  movapd %xmm7,%xmm11
  mulsd  %xmm6,%xmm11
  addpd  %xmm13,%xmm10
  addsd  %xmm11,%xmm0
  movsd  -0x28(%rsp),%xmm11
  mulsd  %xmm11,%xmm7
  addsd  %xmm7,%xmm9
  movsd  -0x68(%rsp),%xmm7
  mulsd  %xmm7,%xmm6
  addsd  %xmm6,%xmm4
  movapd %xmm7,%xmm6
  mulsd  %xmm11,%xmm6
  addsd  %xmm6,%xmm5
  movapd %xmm3,%xmm6
  mulsd  %xmm14,%xmm6
  mulsd  %xmm2,%xmm14
  addsd  %xmm6,%xmm8
  movsd  -0x58(%rsp),%xmm6
  addsd  %xmm14,%xmm1
  mulsd  %xmm6,%xmm3
  mulsd  %xmm6,%xmm2
  addsd  %xmm3,%xmm15
  addsd  %xmm2,%xmm12
  nopl   0x0(%rax,%rax,1)
L157:
  movapd -0x78(%rsp),%xmm3
  movapd %xmm10,%xmm2
  movapd %xmm10,%xmm11
  movapd %xmm10,%xmm14
  unpckhpd %xmm2,%xmm2
  movapd %xmm3,%xmm6
  movapd %xmm3,%xmm7
  unpckhpd %xmm6,%xmm6
  test   %r13d,%r13d
  jne    L168
  mov    0x68(%rsp),%ecx
  test   %ecx,%ecx
  jne    L192
  movsd  %xmm0,0x0(%rbp)
  cmp    $0x1,%r10d
  jle    L76
L156:
  movapd -0x78(%rsp),%xmm1
  movsd  %xmm9,0x8(%rbp)
  movsd  %xmm4,0x20(%rbp)
  movsd  %xmm5,0x28(%rbp)
  movups %xmm1,0x40(%rbp)
  cmp    $0x3,%r11d
  jle    L137
  movups %xmm10,0x60(%rbp)
L137:
  add    $0x20,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   (%rax)
L168:
  mov    0x60(%rsp),%edx
  movsd  (%r12),%xmm11
  movsd  0x8(%r12),%xmm7
  movsd  0x20(%r12),%xmm6
  movsd  0x28(%r12),%xmm13
  test   %edx,%edx
  je     L25
  movupd 0x10(%r12),%xmm2
  movq   %xmm6,%rax
  movsd  0x10(%r12),%xmm3
  movapd %xmm7,%xmm6
  movsd  0x18(%r12),%xmm14
  movq   %rax,%xmm7
  movhpd 0x30(%r12),%xmm2
  movaps %xmm2,-0x68(%rsp)
  movupd 0x30(%r12),%xmm2
  movlpd 0x18(%r12),%xmm2
  movaps %xmm2,-0x48(%rsp)
  movsd  0x30(%r12),%xmm2
  movsd  %xmm2,-0x58(%rsp)
  movsd  0x38(%r12),%xmm2
  movsd  %xmm2,-0x28(%rsp)
  cmp    $0x1,%r13d
  je     L124
L71:
  movapd -0x48(%rsp),%xmm2
  subsd  %xmm4,%xmm6
  subsd  %xmm0,%xmm11
  subsd  %xmm9,%xmm7
  subsd  %xmm5,%xmm13
  subpd  %xmm10,%xmm2
  subsd  %xmm8,%xmm3
  movapd %xmm6,%xmm4
  movsd  -0x58(%rsp),%xmm6
  subsd  %xmm1,%xmm14
  movapd %xmm11,%xmm0
  movapd %xmm7,%xmm9
  movapd %xmm13,%xmm5
  movapd %xmm2,%xmm10
  movapd -0x68(%rsp),%xmm2
  subsd  %xmm15,%xmm6
  subpd  -0x78(%rsp),%xmm2
  movaps %xmm2,-0x78(%rsp)
  movsd  -0x28(%rsp),%xmm2
  subsd  %xmm12,%xmm2
L105:
  mov    0x68(%rsp),%eax
  test   %eax,%eax
  jne    L192
  movsd  -0x78(%rsp),%xmm7
  movapd %xmm10,%xmm11
  movsd  %xmm0,0x0(%rbp)
  cmp    $0x1,%r10d
  jg     L156
L76:
  movsd  %xmm4,0x20(%rbp)
  movsd  %xmm7,0x40(%rbp)
  cmp    $0x3,%r11d
  jle    L137
  movsd  %xmm11,0x60(%rbp)
  jmp    L137
  nopl   (%rax)
L192:
  movsd  %xmm0,0x0(%rbp)
  movsd  %xmm4,0x8(%rbp)
  movsd  %xmm3,0x10(%rbp)
  cmp    $0x3,%r11d
  jle    L22
  movsd  %xmm14,0x18(%rbp)
  cmp    $0x1,%r10d
  jle    L137
  movsd  %xmm9,0x20(%rbp)
  movsd  %xmm5,0x28(%rbp)
  movsd  %xmm6,0x30(%rbp)
  movsd  %xmm2,0x38(%rbp)
  add    $0x20,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   (%rax)
L22:
  cmp    $0x1,%r10d
  jle    L137
  movsd  %xmm9,0x20(%rbp)
  movsd  %xmm5,0x28(%rbp)
  movsd  %xmm6,0x30(%rbp)
  add    $0x20,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   (%rax)
L25:
  movupd 0x40(%r12),%xmm2
  movsd  0x40(%r12),%xmm3
  movsd  0x60(%r12),%xmm14
  movaps %xmm2,-0x68(%rsp)
  movsd  0x48(%r12),%xmm2
  movsd  %xmm2,-0x58(%rsp)
  movupd 0x60(%r12),%xmm2
  movaps %xmm2,-0x48(%rsp)
  movsd  0x68(%r12),%xmm2
  movsd  %xmm2,-0x28(%rsp)
  cmp    $0x1,%r13d
  jne    L71
L124:
  movapd -0x78(%rsp),%xmm2
  addpd  -0x68(%rsp),%xmm2
  addsd  %xmm6,%xmm4
  movsd  -0x58(%rsp),%xmm6
  addsd  %xmm11,%xmm0
  addsd  %xmm7,%xmm9
  addpd  -0x48(%rsp),%xmm10
  addsd  %xmm13,%xmm5
  movaps %xmm2,-0x78(%rsp)
  movsd  -0x28(%rsp),%xmm2
  addsd  %xmm8,%xmm3
  addsd  %xmm15,%xmm6
  addsd  %xmm1,%xmm14
  addsd  %xmm12,%xmm2
  jmp    L105
  nopw   0x0(%rax,%rax,1)
L89:
  pxor   %xmm12,%xmm12
  pxor   %xmm10,%xmm10
  xor    %ecx,%ecx
  movaps %xmm10,-0x78(%rsp)
  movapd %xmm12,%xmm15
  movapd %xmm12,%xmm5
  movapd %xmm12,%xmm9
  movapd %xmm12,%xmm1
  movapd %xmm12,%xmm8
  movapd %xmm12,%xmm4
  movapd %xmm12,%xmm0
  jmp    L75
L223:
  pxor   %xmm13,%xmm13
  pxor   %xmm1,%xmm1
  mov    %r8,%rax
  mov    %rdi,%rdx
  movaps %xmm1,-0x58(%rsp)
  movapd %xmm13,%xmm15
  movapd %xmm13,%xmm14
  movapd %xmm13,%xmm10
  movaps %xmm1,-0x78(%rsp)
  movapd %xmm13,%xmm7
  movsd  %xmm13,-0x28(%rsp)
  movsd  %xmm13,-0x68(%rsp)
  movsd  %xmm13,-0x48(%rsp)
  jmp    L210
```

assistant: ```c
void kernel_dgemm_nn_2x4_vs_lib4(int km, int kn, int kmax, double *A, double *B, int sdb, double *C, double *D, int alg, int tc, int td) {
  if (kmax <= 0)
    return;
  const int bs = 4;
  int k;
  double a_0, a_1, b_0, b_1, b_2, b_3, c_00 = 0, c_01 = 0, c_02 = 0, c_03 = 0, c_10 = 0, c_11 = 0, c_12 = 0, c_13 = 0;
  for (k = 0; k < kmax - 3; k += 4) {
    a_0 = A[0 + bs * 0];
    a_1 = A[1 + bs * 0];
    b_0 = B[0 + bs * 0];
    b_1 = B[0 + bs * 1];
    b_2 = B[0 + bs * 2];
    b_3 = B[0 + bs * 3];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_02 += a_0 * b_2;
    c_12 += a_1 * b_2;
    c_03 += a_0 * b_3;
    c_13 += a_1 * b_3;
    a_0 = A[0 + bs * 1];
    a_1 = A[1 + bs * 1];
    b_0 = B[1 + bs * 0];
    b_1 = B[1 + bs * 1];
    b_2 = B[1 + bs * 2];
    b_3 = B[1 + bs * 3];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_02 += a_0 * b_2;
    c_12 += a_1 * b_2;
    c_03 += a_0 * b_3;
    c_13 += a_1 * b_3;
    a_0 = A[0 + bs * 2];
    a_1 = A[1 + bs * 2];
    b_0 = B[2 + bs * 0];
    b_1 = B[2 + bs * 1];
    b_2 = B[2 + bs * 2];
    b_3 = B[2 + bs * 3];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_02 += a_0 * b_2;
    c_12 += a_1 * b_2;
    c_03 += a_0 * b_3;
    c_13 += a_1 * b_3;
    a_0 = A[0 + bs * 3];
    a_1 = A[1 + bs * 3];
    b_0 = B[3 + bs * 0];
    b_1 = B[3 + bs * 1];
    b_2 = B[3 + bs * 2];
    b_3 = B[3 + bs * 3];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_02 += a_0 * b_2;
    c_12 += a_1 * b_2;
    c_03 += a_0 * b_3;
    c_13 += a_1 * b_3;
    A += 16;
    B += 4 * sdb;
  }
  for (; k < kmax; k++) {
    a_0 = A[0 + bs * 0];
    a_1 = A[1 + bs * 0];
    b_0 = B[0 + bs * 0];
    b_1 = B[0 + bs * 1];
    b_2 = B[0 + bs * 2];
    b_3 = B[0 + bs * 3];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_02 += a_0 * b_2;
    c_12 += a_1 * b_2;
    c_03 += a_0 * b_3;
    c_13 += a_1 * b_3;
    A += 4;
    B += 1;
  }
  double d_00, d_01, d_02, d_03, d_10, d_11, d_12, d_13;
  if (alg == 0) {
    if (td == 0) {
      goto store_n;
    } else {
      goto store_t;
    }
  } else {
    if (tc == 0) {
      d_00 = C[0 + bs * 0];
      d_10 = C[1 + bs * 0];
      d_01 = C[0 + bs * 1];
      d_11 = C[1 + bs * 1];
      d_02 = C[0 + bs * 2];
      d_12 = C[1 + bs * 2];
      d_03 = C[0 + bs * 3];
      d_13 = C[1 + bs * 3];
    } else {
      d_00 = C[0 + bs * 0];
      d_01 = C[1 + bs * 0];
      d_02 = C[2 + bs * 0];
      d_03 = C[3 + bs * 0];
      d_10 = C[0 + bs * 1];
      d_11 = C[1 + bs * 1];
      d_12 = C[2 + bs * 1];
      d_13 = C[3 + bs * 1];
    }
    if (alg == 1) {
      c_00 = d_00 + c_00;
      c_10 = d_10 + c_10;
      c_01 = d_01 + c_01;
      c_11 = d_11 + c_11;
      c_02 = d_02 + c_02;
      c_12 = d_12 + c_12;
      c_03 = d_03 + c_03;
      c_13 = d_13 + c_13;
    } else {
      c_00 = d_00 - c_00;
      c_10 = d_10 - c_10;
      c_01 = d_01 - c_01;
      c_11 = d_11 - c_11;
      c_02 = d_02 - c_02;
      c_12 = d_12 - c_12;
      c_03 = d_03 - c_03;
      c_13 = d_13 - c_13;
    }
    if (td == 0) {
      goto store_n;
    } else {
      goto store_t;
    }
  }
store_n:
  if (km >= 2) {
    D[0 + bs * 0] = c_00;
    D[1 + bs * 0] = c_10;
    D[0 + bs * 1] = c_01;
    D[1 + bs * 1] = c_11;
    D[0 + bs * 2] = c_02;
    D[1 + bs * 2] = c_12;
    if (kn >= 4) {
      D[0 + bs * 3] = c_03;
      D[1 + bs * 3] = c_13;
    }
  } else {
    D[0 + bs * 0] = c_00;
    D[0 + bs * 1] = c_01;
    D[0 + bs * 2] = c_02;
    if (kn >= 4) {
      D[0 + bs * 3] = c_03;
    }
  }
  return;
store_t:
  if (kn >= 4) {
    D[0 + bs * 0] = c_00;
    D[1 + bs * 0] = c_01;
    D[2 + bs * 0] = c_02;
    D[3 + bs * 0] = c_03;
    if (km >= 2) {
      D[0 + bs * 1] = c_10;
      D[1 + bs * 1] = c_11;
      D[2 + bs * 1] = c_12;
      D[3 + bs * 1] = c_13;
    }
  } else {
    D[0 + bs * 0] = c_00;
    D[1 + bs * 0] = c_01;
    D[2 + bs * 0] = c_02;
    if (km >= 2) {
      D[0 + bs * 1] = c_10;
      D[1 + bs * 1] = c_11;
      D[2 + bs * 1] = c_12;
    }
  }
  return;
}
```