user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<kernel_dttmm_uu_nt_4x4_lib4>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %rdx,%rbp
  mov    %rcx,%rdx
  movsd  (%rsi),%xmm1
  movapd %xmm1,%xmm10
  mulsd  0x0(%rbp),%xmm10
  pxor   %xmm0,%xmm0
  addsd  %xmm0,%xmm10
  movapd %xmm1,%xmm9
  mulsd  0x8(%rbp),%xmm9
  addsd  %xmm0,%xmm9
  movapd %xmm1,%xmm5
  mulsd  0x10(%rbp),%xmm5
  addsd  %xmm0,%xmm5
  mulsd  0x18(%rbp),%xmm1
  addsd  %xmm0,%xmm1
  movapd %xmm1,%xmm3
  movsd  0x20(%rsi),%xmm2
  movsd  0x28(%rsi),%xmm1
  movsd  0x20(%rbp),%xmm8
  movsd  0x28(%rbp),%xmm7
  movsd  0x30(%rbp),%xmm6
  movsd  0x38(%rbp),%xmm4
  movapd %xmm2,%xmm14
  mulsd  %xmm8,%xmm14
  addsd  %xmm10,%xmm14
  mulsd  %xmm1,%xmm8
  addsd  %xmm0,%xmm8
  movapd %xmm2,%xmm13
  mulsd  %xmm7,%xmm13
  addsd  %xmm9,%xmm13
  mulsd  %xmm1,%xmm7
  addsd  %xmm0,%xmm7
  movapd %xmm2,%xmm12
  mulsd  %xmm6,%xmm12
  addsd  %xmm5,%xmm12
  mulsd  %xmm1,%xmm6
  addsd  %xmm0,%xmm6
  mulsd  %xmm4,%xmm2
  addsd  %xmm3,%xmm2
  mulsd  %xmm4,%xmm1
  addsd  %xmm0,%xmm1
  movsd  0x40(%rsi),%xmm5
  movsd  0x48(%rsi),%xmm4
  movsd  0x50(%rsi),%xmm3
  movsd  0x40(%rbp),%xmm11
  movsd  0x48(%rbp),%xmm10
  movsd  0x50(%rbp),%xmm9
  movapd %xmm5,%xmm15
  mulsd  %xmm11,%xmm15
  addsd  %xmm14,%xmm15
  movapd %xmm4,%xmm14
  mulsd  %xmm11,%xmm14
  addsd  %xmm8,%xmm14
  mulsd  %xmm3,%xmm11
  addsd  %xmm0,%xmm11
  movapd %xmm5,%xmm8
  mulsd  %xmm10,%xmm8
  addsd  %xmm8,%xmm13
  movapd %xmm4,%xmm8
  mulsd  %xmm10,%xmm8
  addsd  %xmm7,%xmm8
  movsd  %xmm8,-0x68(%rsp)
  mulsd  %xmm3,%xmm10
  addsd  %xmm0,%xmm10
  movapd %xmm5,%xmm7
  mulsd  %xmm9,%xmm7
  addsd  %xmm7,%xmm12
  movapd %xmm4,%xmm7
  mulsd  %xmm9,%xmm7
  addsd  %xmm6,%xmm7
  movsd  %xmm7,-0x50(%rsp)
  mulsd  %xmm3,%xmm9
  addsd  %xmm0,%xmm9
  movsd  %xmm9,-0x48(%rsp)
  mulsd  0x58(%rbp),%xmm5
  movapd %xmm5,%xmm6
  addsd  %xmm2,%xmm6
  movsd  %xmm6,-0x38(%rsp)
  mulsd  0x58(%rbp),%xmm4
  addsd  %xmm1,%xmm4
  movsd  %xmm4,-0x30(%rsp)
  mulsd  0x58(%rbp),%xmm3
  addsd  %xmm0,%xmm3
  movsd  %xmm3,-0x28(%rsp)
  movsd  0x60(%rsi),%xmm3
  movsd  0x68(%rsi),%xmm4
  movsd  0x70(%rsi),%xmm6
  movsd  0x78(%rsi),%xmm7
  movsd  0x60(%rbp),%xmm5
  movsd  0x68(%rbp),%xmm2
  movsd  0x70(%rbp),%xmm1
  movsd  0x78(%rbp),%xmm9
  movapd %xmm3,%xmm8
  mulsd  %xmm5,%xmm8
  addsd  %xmm15,%xmm8
  movsd  %xmm8,-0x18(%rsp)
  movapd %xmm4,%xmm8
  mulsd  %xmm5,%xmm8
  addsd  %xmm14,%xmm8
  movsd  %xmm8,-0x78(%rsp)
  movapd %xmm6,%xmm14
  mulsd  %xmm5,%xmm14
  addsd  %xmm11,%xmm14
  movapd %xmm14,%xmm11
  movsd  %xmm14,-0x10(%rsp)
  mulsd  %xmm7,%xmm5
  movapd %xmm5,%xmm14
  addsd  %xmm0,%xmm14
  movsd  %xmm14,-0x70(%rsp)
  movapd %xmm3,%xmm14
  mulsd  %xmm2,%xmm14
  addsd  %xmm13,%xmm14
  movapd %xmm14,%xmm8
  movapd %xmm4,%xmm14
  mulsd  %xmm2,%xmm14
  movsd  -0x68(%rsp),%xmm15
  addsd  %xmm14,%xmm15
  movapd %xmm6,%xmm14
  mulsd  %xmm2,%xmm14
  addsd  %xmm10,%xmm14
  movsd  %xmm14,-0x68(%rsp)
  mulsd  %xmm7,%xmm2
  addsd  %xmm0,%xmm2
  movsd  %xmm2,-0x60(%rsp)
  movapd %xmm3,%xmm2
  mulsd  %xmm1,%xmm2
  addsd  %xmm12,%xmm2
  movsd  %xmm2,-0x58(%rsp)
  movapd %xmm4,%xmm2
  mulsd  %xmm1,%xmm2
  addsd  -0x50(%rsp),%xmm2
  movsd  %xmm2,-0x50(%rsp)
  movapd %xmm6,%xmm2
  mulsd  %xmm1,%xmm2
  addsd  -0x48(%rsp),%xmm2
  movsd  %xmm2,-0x48(%rsp)
  mulsd  %xmm7,%xmm1
  movapd %xmm1,%xmm2
  addsd  %xmm0,%xmm2
  movsd  %xmm2,-0x40(%rsp)
  mulsd  %xmm9,%xmm3
  movapd %xmm3,%xmm2
  addsd  -0x38(%rsp),%xmm2
  movsd  %xmm2,-0x38(%rsp)
  mulsd  %xmm9,%xmm4
  addsd  -0x30(%rsp),%xmm4
  movsd  %xmm4,-0x30(%rsp)
  mulsd  %xmm9,%xmm6
  addsd  -0x28(%rsp),%xmm6
  movsd  %xmm6,-0x28(%rsp)
  mulsd  %xmm9,%xmm7
  movapd %xmm7,%xmm1
  addsd  %xmm0,%xmm1
  movsd  %xmm1,-0x20(%rsp)
  lea    0x80(%rsi),%rax
  sub    $0xffffffffffffff80,%rbp
  cmp    $0x8,%edi
  jle    L5
  sub    $0x9,%edi
  shr    $0x2,%edi
  mov    %edi,%r8d
  lea    0x2(%r8),%rcx
  shl    $0x7,%rcx
  lea    (%rsi,%rcx,1),%rdi
  mov    %rbp,%rsi
  mov    %rax,%rcx
  movapd %xmm8,%xmm7
  movapd %xmm15,%xmm9
  movsd  -0x18(%rsp),%xmm15
L6:
  movsd  (%rcx),%xmm4
  movsd  0x8(%rcx),%xmm3
  movsd  0x10(%rcx),%xmm2
  movsd  0x18(%rcx),%xmm1
  movsd  (%rsi),%xmm0
  movsd  0x8(%rsi),%xmm14
  movsd  0x10(%rsi),%xmm5
  movsd  0x18(%rsi),%xmm6
  movapd %xmm4,%xmm13
  mulsd  %xmm0,%xmm13
  addsd  %xmm15,%xmm13
  movapd %xmm3,%xmm12
  mulsd  %xmm0,%xmm12
  addsd  -0x78(%rsp),%xmm12
  movapd %xmm2,%xmm8
  mulsd  %xmm0,%xmm8
  addsd  %xmm8,%xmm11
  mulsd  %xmm1,%xmm0
  addsd  -0x70(%rsp),%xmm0
  movapd %xmm4,%xmm8
  mulsd  %xmm14,%xmm8
  addsd  %xmm7,%xmm8
  movapd %xmm3,%xmm15
  mulsd  %xmm14,%xmm15
  addsd  %xmm9,%xmm15
  movapd %xmm2,%xmm10
  mulsd  %xmm14,%xmm10
  addsd  -0x68(%rsp),%xmm10
  mulsd  %xmm1,%xmm14
  addsd  -0x60(%rsp),%xmm14
  movsd  %xmm14,-0x78(%rsp)
  movapd %xmm4,%xmm7
  mulsd  %xmm5,%xmm7
  addsd  -0x58(%rsp),%xmm7
  movsd  %xmm7,-0x70(%rsp)
  movapd %xmm3,%xmm7
  mulsd  %xmm5,%xmm7
  addsd  -0x50(%rsp),%xmm7
  movsd  %xmm7,-0x68(%rsp)
  movapd %xmm2,%xmm9
  mulsd  %xmm5,%xmm9
  addsd  -0x48(%rsp),%xmm9
  movsd  %xmm9,-0x60(%rsp)
  mulsd  %xmm1,%xmm5
  addsd  -0x40(%rsp),%xmm5
  movsd  %xmm5,-0x58(%rsp)
  mulsd  %xmm6,%xmm4
  addsd  -0x38(%rsp),%xmm4
  movsd  %xmm4,-0x50(%rsp)
  mulsd  %xmm6,%xmm3
  addsd  -0x30(%rsp),%xmm3
  movsd  %xmm3,-0x48(%rsp)
  mulsd  %xmm6,%xmm2
  addsd  -0x28(%rsp),%xmm2
  movsd  %xmm2,-0x40(%rsp)
  mulsd  %xmm6,%xmm1
  addsd  -0x20(%rsp),%xmm1
  movsd  %xmm1,-0x38(%rsp)
  movsd  0x20(%rcx),%xmm4
  movsd  0x28(%rcx),%xmm3
  movsd  0x30(%rcx),%xmm2
  movsd  0x38(%rcx),%xmm1
  movsd  0x20(%rsi),%xmm7
  movsd  0x28(%rsi),%xmm6
  movsd  0x30(%rsi),%xmm5
  movsd  0x38(%rsi),%xmm9
  movapd %xmm4,%xmm14
  mulsd  %xmm7,%xmm14
  addsd  %xmm13,%xmm14
  movapd %xmm3,%xmm13
  mulsd  %xmm7,%xmm13
  addsd  %xmm12,%xmm13
  movapd %xmm2,%xmm12
  mulsd  %xmm7,%xmm12
  addsd  %xmm12,%xmm11
  mulsd  %xmm1,%xmm7
  addsd  %xmm0,%xmm7
  movapd %xmm4,%xmm0
  mulsd  %xmm6,%xmm0
  addsd  %xmm0,%xmm8
  movapd %xmm3,%xmm0
  mulsd  %xmm6,%xmm0
  movapd %xmm0,%xmm12
  addsd  %xmm15,%xmm12
  movapd %xmm2,%xmm0
  mulsd  %xmm6,%xmm0
  addsd  %xmm0,%xmm10
  mulsd  %xmm1,%xmm6
  movapd %xmm6,%xmm15
  addsd  -0x78(%rsp),%xmm15
  movsd  %xmm15,-0x78(%rsp)
  movapd %xmm4,%xmm0
  mulsd  %xmm5,%xmm0
  addsd  -0x70(%rsp),%xmm0
  movsd  %xmm0,-0x70(%rsp)
  movapd %xmm3,%xmm0
  mulsd  %xmm5,%xmm0
  addsd  -0x68(%rsp),%xmm0
  movsd  %xmm0,-0x68(%rsp)
  movapd %xmm2,%xmm0
  mulsd  %xmm5,%xmm0
  addsd  -0x60(%rsp),%xmm0
  movsd  %xmm0,-0x60(%rsp)
  mulsd  %xmm1,%xmm5
  addsd  -0x58(%rsp),%xmm5
  movsd  %xmm5,-0x58(%rsp)
  mulsd  %xmm9,%xmm4
  addsd  -0x50(%rsp),%xmm4
  movsd  %xmm4,-0x50(%rsp)
  mulsd  %xmm9,%xmm3
  movapd %xmm3,%xmm6
  addsd  -0x48(%rsp),%xmm6
  movsd  %xmm6,-0x48(%rsp)
  mulsd  %xmm9,%xmm2
  addsd  -0x40(%rsp),%xmm2
  movsd  %xmm2,-0x40(%rsp)
  mulsd  %xmm9,%xmm1
  addsd  -0x38(%rsp),%xmm1
  movsd  %xmm1,-0x38(%rsp)
  movsd  0x40(%rcx),%xmm3
  movsd  0x48(%rcx),%xmm2
  movsd  0x50(%rcx),%xmm1
  movsd  0x58(%rcx),%xmm0
  movsd  0x40(%rsi),%xmm6
  movsd  0x48(%rsi),%xmm5
  movsd  0x50(%rsi),%xmm4
  movsd  0x58(%rsi),%xmm9
  movapd %xmm3,%xmm15
  mulsd  %xmm6,%xmm15
  addsd  %xmm14,%xmm15
  movapd %xmm2,%xmm14
  mulsd  %xmm6,%xmm14
  addsd  %xmm13,%xmm14
  movapd %xmm1,%xmm13
  mulsd  %xmm6,%xmm13
  addsd  %xmm13,%xmm11
  mulsd  %xmm0,%xmm6
  addsd  %xmm6,%xmm7
  movapd %xmm3,%xmm6
  mulsd  %xmm5,%xmm6
  addsd  %xmm6,%xmm8
  movapd %xmm2,%xmm6
  mulsd  %xmm5,%xmm6
  addsd  %xmm6,%xmm12
  movapd %xmm1,%xmm6
  mulsd  %xmm5,%xmm6
  addsd  %xmm10,%xmm6
  mulsd  %xmm0,%xmm5
  movapd %xmm5,%xmm13
  addsd  -0x78(%rsp),%xmm13
  movsd  %xmm13,-0x30(%rsp)
  movapd %xmm3,%xmm5
  mulsd  %xmm4,%xmm5
  addsd  -0x70(%rsp),%xmm5
  movsd  %xmm5,-0x28(%rsp)
  movapd %xmm2,%xmm5
  mulsd  %xmm4,%xmm5
  addsd  -0x68(%rsp),%xmm5
  movsd  %xmm5,-0x20(%rsp)
  movapd %xmm1,%xmm10
  mulsd  %xmm4,%xmm10
  movapd %xmm10,%xmm13
  addsd  -0x60(%rsp),%xmm13
  movsd  %xmm13,-0x18(%rsp)
  mulsd  %xmm0,%xmm4
  movapd %xmm4,%xmm10
  addsd  -0x58(%rsp),%xmm10
  movsd  %xmm10,-0x10(%rsp)
  mulsd  %xmm9,%xmm3
  addsd  -0x50(%rsp),%xmm3
  movsd  %xmm3,-0x8(%rsp)
  mulsd  %xmm9,%xmm2
  addsd  -0x48(%rsp),%xmm2
  movsd  %xmm2,(%rsp)
  mulsd  %xmm9,%xmm1
  movapd %xmm1,%xmm4
  addsd  -0x40(%rsp),%xmm4
  movsd  %xmm4,0x8(%rsp)
  mulsd  %xmm9,%xmm0
  addsd  -0x38(%rsp),%xmm0
  movsd  %xmm0,0x10(%rsp)
  movsd  0x60(%rcx),%xmm3
  movsd  0x68(%rcx),%xmm2
  movsd  0x70(%rcx),%xmm1
  movsd  0x78(%rcx),%xmm0
  movsd  0x60(%rsi),%xmm9
  movsd  0x68(%rsi),%xmm5
  movsd  0x70(%rsi),%xmm4
  movsd  0x78(%rsi),%xmm10
  movapd %xmm3,%xmm13
  mulsd  %xmm9,%xmm13
  addsd  %xmm13,%xmm15
  movapd %xmm2,%xmm13
  mulsd  %xmm9,%xmm13
  addsd  %xmm14,%xmm13
  movsd  %xmm13,-0x78(%rsp)
  movapd %xmm1,%xmm14
  mulsd  %xmm9,%xmm14
  addsd  %xmm14,%xmm11
  mulsd  %xmm0,%xmm9
  addsd  %xmm7,%xmm9
  movsd  %xmm9,-0x70(%rsp)
  movapd %xmm3,%xmm7
  mulsd  %xmm5,%xmm7
  addsd  %xmm8,%xmm7
  movapd %xmm2,%xmm9
  mulsd  %xmm5,%xmm9
  addsd  %xmm12,%xmm9
  movapd %xmm1,%xmm8
  mulsd  %xmm5,%xmm8
  addsd  %xmm6,%xmm8
  movsd  %xmm8,-0x68(%rsp)
  mulsd  %xmm0,%xmm5
  movapd %xmm5,%xmm12
  addsd  -0x30(%rsp),%xmm12
  movsd  %xmm12,-0x60(%rsp)
  movapd %xmm3,%xmm12
  mulsd  %xmm4,%xmm12
  addsd  -0x28(%rsp),%xmm12
  movsd  %xmm12,-0x58(%rsp)
  movapd %xmm2,%xmm5
  mulsd  %xmm4,%xmm5
  addsd  -0x20(%rsp),%xmm5
  movsd  %xmm5,-0x50(%rsp)
  movapd %xmm1,%xmm5
  mulsd  %xmm4,%xmm5
  addsd  -0x18(%rsp),%xmm5
  movsd  %xmm5,-0x48(%rsp)
  mulsd  %xmm0,%xmm4
  movapd %xmm4,%xmm5
  addsd  -0x10(%rsp),%xmm5
  movsd  %xmm5,-0x40(%rsp)
  mulsd  %xmm10,%xmm3
  movapd %xmm3,%xmm6
  addsd  -0x8(%rsp),%xmm6
  movsd  %xmm6,-0x38(%rsp)
  mulsd  %xmm10,%xmm2
  addsd  (%rsp),%xmm2
  movsd  %xmm2,-0x30(%rsp)
  mulsd  %xmm10,%xmm1
  movapd %xmm1,%xmm3
  addsd  0x8(%rsp),%xmm3
  movsd  %xmm3,-0x28(%rsp)
  mulsd  %xmm10,%xmm0
  movapd %xmm0,%xmm3
  addsd  0x10(%rsp),%xmm3
  movsd  %xmm3,-0x20(%rsp)
  sub    $0xffffffffffffff80,%rcx
  sub    $0xffffffffffffff80,%rsi
  cmp    %rdi,%rcx
  jne    L6
  movsd  %xmm15,-0x18(%rsp)
  movsd  %xmm11,-0x10(%rsp)
  movapd %xmm7,%xmm8
  movapd %xmm9,%xmm15
  lea    0x1(%r8),%rcx
  shl    $0x7,%rcx
  add    %rcx,%rax
  add    %rcx,%rbp
L5:
  mov    (%rax),%rbx
  mov    0x8(%rax),%r11
  mov    0x10(%rax),%r10
  mov    0x18(%rax),%r9
  movsd  0x0(%rbp),%xmm14
  movsd  0x8(%rbp),%xmm0
  movsd  0x10(%rbp),%xmm1
  movsd  0x18(%rbp),%xmm3
  movq   %rbx,%xmm2
  mulsd  %xmm0,%xmm2
  addsd  %xmm8,%xmm2
  movsd  %xmm2,-0x8(%rsp)
  movq   %r11,%xmm7
  mulsd  %xmm0,%xmm7
  addsd  %xmm15,%xmm7
  movsd  %xmm7,(%rsp)
  movq   %r10,%xmm4
  mulsd  %xmm0,%xmm4
  addsd  -0x68(%rsp),%xmm4
  movsd  %xmm4,-0x68(%rsp)
  movq   %r9,%xmm5
  mulsd  %xmm5,%xmm0
  addsd  -0x60(%rsp),%xmm0
  movsd  %xmm0,-0x60(%rsp)
  movq   %rbx,%xmm4
  mulsd  %xmm1,%xmm4
  addsd  -0x58(%rsp),%xmm4
  movq   %r11,%xmm5
  mulsd  %xmm1,%xmm5
  addsd  -0x50(%rsp),%xmm5
  movq   %r10,%xmm11
  mulsd  %xmm1,%xmm11
  movapd %xmm11,%xmm6
  addsd  -0x48(%rsp),%xmm6
  movq   %r9,%xmm11
  mulsd  %xmm11,%xmm1
  addsd  -0x40(%rsp),%xmm1
  movq   %rbx,%xmm8
  mulsd  %xmm3,%xmm8
  addsd  -0x38(%rsp),%xmm8
  movq   %r11,%xmm9
  mulsd  %xmm3,%xmm9
  addsd  -0x30(%rsp),%xmm9
  movq   %r10,%xmm10
  mulsd  %xmm3,%xmm10
  addsd  -0x28(%rsp),%xmm10
  mulsd  %xmm11,%xmm3
  addsd  -0x20(%rsp),%xmm3
  mov    0x20(%rax),%rcx
  movsd  0x28(%rax),%xmm15
  movsd  0x30(%rax),%xmm0
  mov    0x38(%rax),%r12
  movsd  0x28(%rbp),%xmm13
  movsd  0x30(%rbp),%xmm2
  movsd  0x38(%rbp),%xmm7
  movq   %rcx,%xmm11
  mulsd  %xmm2,%xmm11
  addsd  %xmm4,%xmm11
  movapd %xmm15,%xmm4
  mulsd  %xmm2,%xmm4
  addsd  %xmm4,%xmm5
  movapd %xmm0,%xmm4
  mulsd  %xmm2,%xmm4
  addsd  %xmm6,%xmm4
  movq   %r12,%xmm12
  mulsd  %xmm12,%xmm2
  addsd  %xmm1,%xmm2
  movsd  %xmm2,-0x58(%rsp)
  movq   %rcx,%xmm12
  mulsd  %xmm7,%xmm12
  movapd %xmm12,%xmm6
  addsd  %xmm8,%xmm6
  movapd %xmm15,%xmm8
  mulsd  %xmm7,%xmm8
  addsd  %xmm9,%xmm8
  movapd %xmm0,%xmm9
  mulsd  %xmm7,%xmm9
  addsd  %xmm10,%xmm9
  movq   %r12,%xmm12
  mulsd  %xmm12,%xmm7
  addsd  %xmm3,%xmm7
  mov    0x40(%rax),%r8
  movsd  0x48(%rax),%xmm2
  mov    0x50(%rax),%rdi
  mov    0x58(%rax),%rsi
  movsd  0x50(%rbp),%xmm12
  movsd  0x58(%rbp),%xmm1
  movq   %r8,%xmm3
  mulsd  %xmm1,%xmm3
  addsd  %xmm3,%xmm6
  movapd %xmm2,%xmm3
  mulsd  %xmm1,%xmm3
  addsd  %xmm3,%xmm8
  movq   %rdi,%xmm3
  mulsd  %xmm1,%xmm3
  addsd  %xmm9,%xmm3
  movsd  %xmm3,-0x50(%rsp)
  movq   %rsi,%xmm10
  mulsd  %xmm10,%xmm1
  addsd  %xmm7,%xmm1
  movsd  0x78(%rbp),%xmm3
  movapd %xmm3,%xmm7
  mulsd  0x60(%rax),%xmm7
  addsd  %xmm6,%xmm7
  movapd %xmm3,%xmm9
  mulsd  0x68(%rax),%xmm9
  addsd  %xmm8,%xmm9
  movapd %xmm3,%xmm10
  mulsd  0x70(%rax),%xmm10
  addsd  -0x50(%rsp),%xmm10
  mulsd  0x78(%rax),%xmm3
  addsd  %xmm1,%xmm3
  movq   %rbx,%xmm8
  mulsd  %xmm14,%xmm8
  addsd  -0x18(%rsp),%xmm8
  movsd  %xmm8,(%rdx)
  movq   %r11,%xmm8
  mulsd  %xmm14,%xmm8
  movapd %xmm8,%xmm6
  addsd  -0x78(%rsp),%xmm6
  movsd  %xmm6,0x8(%rdx)
  movq   %r10,%xmm1
  mulsd  %xmm14,%xmm1
  addsd  -0x10(%rsp),%xmm1
  movsd  %xmm1,0x10(%rdx)
  movq   %r9,%xmm1
  mulsd  %xmm14,%xmm1
  addsd  -0x70(%rsp),%xmm1
  movsd  %xmm1,0x18(%rdx)
  movq   %rcx,%xmm1
  mulsd  %xmm13,%xmm1
  addsd  -0x8(%rsp),%xmm1
  movsd  %xmm1,0x20(%rdx)
  mulsd  %xmm13,%xmm15
  addsd  (%rsp),%xmm15
  movsd  %xmm15,0x28(%rdx)
  movapd %xmm0,%xmm1
  mulsd  %xmm13,%xmm1
  addsd  -0x68(%rsp),%xmm1
  movsd  %xmm1,0x30(%rdx)
  movq   %r12,%xmm1
  mulsd  %xmm13,%xmm1
  addsd  -0x60(%rsp),%xmm1
  movsd  %xmm1,0x38(%rdx)
  movq   %r8,%xmm0
  mulsd  %xmm12,%xmm0
  addsd  %xmm11,%xmm0
  movsd  %xmm0,0x40(%rdx)
  movapd %xmm2,%xmm0
  mulsd  %xmm12,%xmm0
  addsd  %xmm5,%xmm0
  movsd  %xmm0,0x48(%rdx)
  movq   %rdi,%xmm0
  mulsd  %xmm12,%xmm0
  addsd  %xmm4,%xmm0
  movsd  %xmm0,0x50(%rdx)
  movq   %rsi,%xmm0
  mulsd  %xmm12,%xmm0
  addsd  -0x58(%rsp),%xmm0
  movsd  %xmm0,0x58(%rdx)
  movsd  %xmm7,0x60(%rdx)
  movsd  %xmm9,0x68(%rdx)
  movsd  %xmm10,0x70(%rdx)
  movsd  %xmm3,0x78(%rdx)
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
void kernel_dttmm_uu_nt_4x4_lib4(int kmax, double *A, double *B, double *C) {
  const int bs = 4;
  int k = 0;
  double a_0, a_1, a_2, a_3, 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, c_20 = 0, c_21 = 0, c_22 = 0, c_23 = 0, c_30 = 0, c_31 = 0, c_32 = 0, c_33 = 0;
  a_0 = A[0 + bs * 0];
  b_0 = B[0 + bs * 0];
  b_1 = B[1 + bs * 0];
  b_2 = B[2 + bs * 0];
  b_3 = B[3 + bs * 0];
  c_00 += a_0 * b_0;
  c_01 += a_0 * b_1;
  c_02 += a_0 * b_2;
  c_03 += a_0 * b_3;
  a_0 = A[0 + bs * 1];
  a_1 = A[1 + bs * 1];
  b_0 = B[0 + bs * 1];
  b_1 = B[1 + bs * 1];
  b_2 = B[2 + bs * 1];
  b_3 = B[3 + bs * 1];
  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];
  a_2 = A[2 + bs * 2];
  b_0 = B[0 + bs * 2];
  b_1 = B[1 + bs * 2];
  b_2 = B[2 + bs * 2];
  b_3 = B[3 + bs * 2];
  c_00 += a_0 * b_0;
  c_10 += a_1 * b_0;
  c_20 += a_2 * b_0;
  c_01 += a_0 * b_1;
  c_11 += a_1 * b_1;
  c_21 += a_2 * b_1;
  c_02 += a_0 * b_2;
  c_12 += a_1 * b_2;
  c_22 += a_2 * b_2;
  c_03 += a_0 * b_3;
  c_13 += a_1 * b_3;
  c_23 += a_2 * b_3;
  a_0 = A[0 + bs * 3];
  a_1 = A[1 + bs * 3];
  a_2 = A[2 + bs * 3];
  a_3 = A[3 + bs * 3];
  b_0 = B[0 + bs * 3];
  b_1 = B[1 + bs * 3];
  b_2 = B[2 + bs * 3];
  b_3 = B[3 + bs * 3];
  c_00 += a_0 * b_0;
  c_10 += a_1 * b_0;
  c_20 += a_2 * b_0;
  c_30 += a_3 * b_0;
  c_01 += a_0 * b_1;
  c_11 += a_1 * b_1;
  c_21 += a_2 * b_1;
  c_31 += a_3 * b_1;
  c_02 += a_0 * b_2;
  c_12 += a_1 * b_2;
  c_22 += a_2 * b_2;
  c_32 += a_3 * b_2;
  c_03 += a_0 * b_3;
  c_13 += a_1 * b_3;
  c_23 += a_2 * b_3;
  c_33 += a_3 * b_3;
  A += 4 * bs;
  B += 4 * bs;
  k = 4;
  for (; k < kmax - 4; k += 4) {
    a_0 = A[0 + bs * 0];
    a_1 = A[1 + bs * 0];
    a_2 = A[2 + bs * 0];
    a_3 = A[3 + bs * 0];
    b_0 = B[0 + bs * 0];
    b_1 = B[1 + bs * 0];
    b_2 = B[2 + bs * 0];
    b_3 = B[3 + bs * 0];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_20 += a_2 * b_0;
    c_30 += a_3 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_21 += a_2 * b_1;
    c_31 += a_3 * b_1;
    c_02 += a_0 * b_2;
    c_12 += a_1 * b_2;
    c_22 += a_2 * b_2;
    c_32 += a_3 * b_2;
    c_03 += a_0 * b_3;
    c_13 += a_1 * b_3;
    c_23 += a_2 * b_3;
    c_33 += a_3 * b_3;
    a_0 = A[0 + bs * 1];
    a_1 = A[1 + bs * 1];
    a_2 = A[2 + bs * 1];
    a_3 = A[3 + bs * 1];
    b_0 = B[0 + bs * 1];
    b_1 = B[1 + bs * 1];
    b_2 = B[2 + bs * 1];
    b_3 = B[3 + bs * 1];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_20 += a_2 * b_0;
    c_30 += a_3 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_21 += a_2 * b_1;
    c_31 += a_3 * b_1;
    c_02 += a_0 * b_2;
    c_12 += a_1 * b_2;
    c_22 += a_2 * b_2;
    c_32 += a_3 * b_2;
    c_03 += a_0 * b_3;
    c_13 += a_1 * b_3;
    c_23 += a_2 * b_3;
    c_33 += a_3 * b_3;
    a_0 = A[0 + bs * 2];
    a_1 = A[1 + bs * 2];
    a_2 = A[2 + bs * 2];
    a_3 = A[3 + bs * 2];
    b_0 = B[0 + bs * 2];
    b_1 = B[1 + bs * 2];
    b_2 = B[2 + bs * 2];
    b_3 = B[3 + bs * 2];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_20 += a_2 * b_0;
    c_30 += a_3 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_21 += a_2 * b_1;
    c_31 += a_3 * b_1;
    c_02 += a_0 * b_2;
    c_12 += a_1 * b_2;
    c_22 += a_2 * b_2;
    c_32 += a_3 * b_2;
    c_03 += a_0 * b_3;
    c_13 += a_1 * b_3;
    c_23 += a_2 * b_3;
    c_33 += a_3 * b_3;
    a_0 = A[0 + bs * 3];
    a_1 = A[1 + bs * 3];
    a_2 = A[2 + bs * 3];
    a_3 = A[3 + bs * 3];
    b_0 = B[0 + bs * 3];
    b_1 = B[1 + bs * 3];
    b_2 = B[2 + bs * 3];
    b_3 = B[3 + bs * 3];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_20 += a_2 * b_0;
    c_30 += a_3 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_21 += a_2 * b_1;
    c_31 += a_3 * b_1;
    c_02 += a_0 * b_2;
    c_12 += a_1 * b_2;
    c_22 += a_2 * b_2;
    c_32 += a_3 * b_2;
    c_03 += a_0 * b_3;
    c_13 += a_1 * b_3;
    c_23 += a_2 * b_3;
    c_33 += a_3 * b_3;
    A += 4 * bs;
    B += 4 * bs;
  }
  a_0 = A[0 + bs * 0];
  a_1 = A[1 + bs * 0];
  a_2 = A[2 + bs * 0];
  a_3 = A[3 + bs * 0];
  b_0 = B[0 + bs * 0];
  b_1 = B[1 + bs * 0];
  b_2 = B[2 + bs * 0];
  b_3 = B[3 + bs * 0];
  c_00 += a_0 * b_0;
  c_10 += a_1 * b_0;
  c_20 += a_2 * b_0;
  c_30 += a_3 * b_0;
  c_01 += a_0 * b_1;
  c_11 += a_1 * b_1;
  c_21 += a_2 * b_1;
  c_31 += a_3 * b_1;
  c_02 += a_0 * b_2;
  c_12 += a_1 * b_2;
  c_22 += a_2 * b_2;
  c_32 += a_3 * b_2;
  c_03 += a_0 * b_3;
  c_13 += a_1 * b_3;
  c_23 += a_2 * b_3;
  c_33 += a_3 * b_3;
  a_0 = A[0 + bs * 1];
  a_1 = A[1 + bs * 1];
  a_2 = A[2 + bs * 1];
  a_3 = A[3 + bs * 1];
  b_1 = B[1 + bs * 1];
  b_2 = B[2 + bs * 1];
  b_3 = B[3 + bs * 1];
  c_01 += a_0 * b_1;
  c_11 += a_1 * b_1;
  c_21 += a_2 * b_1;
  c_31 += a_3 * b_1;
  c_02 += a_0 * b_2;
  c_12 += a_1 * b_2;
  c_22 += a_2 * b_2;
  c_32 += a_3 * b_2;
  c_03 += a_0 * b_3;
  c_13 += a_1 * b_3;
  c_23 += a_2 * b_3;
  c_33 += a_3 * b_3;
  a_0 = A[0 + bs * 2];
  a_1 = A[1 + bs * 2];
  a_2 = A[2 + bs * 2];
  a_3 = A[3 + bs * 2];
  b_2 = B[2 + bs * 2];
  b_3 = B[3 + bs * 2];
  c_02 += a_0 * b_2;
  c_12 += a_1 * b_2;
  c_22 += a_2 * b_2;
  c_32 += a_3 * b_2;
  c_03 += a_0 * b_3;
  c_13 += a_1 * b_3;
  c_23 += a_2 * b_3;
  c_33 += a_3 * b_3;
  a_0 = A[0 + bs * 3];
  a_1 = A[1 + bs * 3];
  a_2 = A[2 + bs * 3];
  a_3 = A[3 + bs * 3];
  b_3 = B[3 + bs * 3];
  c_03 += a_0 * b_3;
  c_13 += a_1 * b_3;
  c_23 += a_2 * b_3;
  c_33 += a_3 * b_3;
  C[0 + bs * 0] = c_00;
  C[1 + bs * 0] = c_10;
  C[2 + bs * 0] = c_20;
  C[3 + bs * 0] = c_30;
  C[0 + bs * 1] = c_01;
  C[1 + bs * 1] = c_11;
  C[2 + bs * 1] = c_21;
  C[3 + bs * 1] = c_31;
  C[0 + bs * 2] = c_02;
  C[1 + bs * 2] = c_12;
  C[2 + bs * 2] = c_22;
  C[3 + bs * 2] = c_32;
  C[0 + bs * 3] = c_03;
  C[1 + bs * 3] = c_13;
  C[2 + bs * 3] = c_23;
  C[3 + bs * 3] = c_33;
}
```