user: 请从给定的汇编指令推导出C源代码:

```asm
<slsolve>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %edi,-0x8(%rsp)
  mov    %esi,-0x54(%rsp)
  mov    %rdx,-0x18(%rsp)
  mov    %rcx,-0x10(%rsp)
  cmp    $0x7,%esi
  jle    L12
  mov    %esi,%r10d
  mov    %rdx,%r11
  movslq %edi,%rax
  add    $0x1,%rax
  lea    0x0(,%rax,8),%r15
  lea    0x8(%r15),%rbx
  mov    %rbx,-0x48(%rsp)
  lea    0x0(,%rdi,8),%edx
  movslq %edx,%rdx
  lea    0x40(,%rdx,8),%rdi
  mov    %rdi,-0x50(%rsp)
  mov    %r11,%rdi
  add    %rbx,%rdi
  lea    (%r15,%rbx,1),%r14
  add    %r11,%r14
  lea    (%rax,%rax,1),%rdx
  lea    (%rdx,%rax,1),%rsi
  lea    0x0(,%rsi,8),%r9
  mov    %r9,-0x28(%rsp)
  mov    %rbx,%rsi
  add    %r9,%rsi
  add    %r11,%rsi
  mov    %rsi,-0x68(%rsp)
  lea    (%rax,%rax,4),%rsi
  lea    (%rbx,%rsi,8),%rsi
  add    %r11,%rsi
  mov    %rsi,-0x70(%rsp)
  lea    -0x8(%r10),%esi
  mov    %esi,-0x4(%rsp)
  and    $0xfffffff8,%esi
  add    $0x10,%esi
  mov    %esi,-0x20(%rsp)
  mov    %rax,%rsi
  shl    $0x4,%rsi
  add    %rbx,%rsi
  mov    %rsi,-0x38(%rsp)
  mov    %rax,%rsi
  shl    $0x5,%rsi
  add    %rbx,%rsi
  mov    %rsi,-0x30(%rsp)
  add    %rax,%rdx
  shl    $0x4,%rdx
  add    %rbx,%rdx
  mov    %rdx,-0x40(%rsp)
  mov    %r11,%rdx
  movl   $0x8,-0x78(%rsp)
  lea    -0x1(%r10),%eax
  mov    %eax,-0x1c(%rsp)
L29:
  mov    %rdi,%r8
  mov    %r14,%r9
  mov    -0x38(%rsp),%rax
  lea    (%rax,%rdx,1),%rbp
  mov    -0x68(%rsp),%r13
  mov    %r13,%r10
  mov    -0x30(%rsp),%rax
  lea    (%rdx,%rax,1),%r12
  mov    -0x70(%rsp),%r11
  mov    -0x40(%rsp),%rbx
  add    %rdx,%rbx
  mov    %rcx,-0x60(%rsp)
  movsd  (%rcx),%xmm2
  movapd %xmm2,%xmm0
  mulsd  0x8(%rdx),%xmm0
  movsd  0x8(%rcx),%xmm7
  subsd  %xmm0,%xmm7
  movapd %xmm2,%xmm0
  mulsd  0x10(%rdx),%xmm0
  movsd  0x10(%rcx),%xmm6
  subsd  %xmm0,%xmm6
  movapd %xmm7,%xmm0
  mulsd  (%rdi),%xmm0
  subsd  %xmm0,%xmm6
  movapd %xmm2,%xmm0
  mulsd  0x18(%rdx),%xmm0
  movsd  0x18(%rcx),%xmm5
  subsd  %xmm0,%xmm5
  movapd %xmm7,%xmm0
  mulsd  0x8(%rdi),%xmm0
  subsd  %xmm0,%xmm5
  movapd %xmm6,%xmm0
  mulsd  (%r14),%xmm0
  subsd  %xmm0,%xmm5
  mov    -0x48(%rsp),%rsi
  mov    %rsi,%rax
  add    %rdx,%rax
  movapd %xmm2,%xmm0
  mulsd  0x20(%rdx),%xmm0
  movsd  0x20(%rcx),%xmm4
  subsd  %xmm0,%xmm4
  movapd %xmm7,%xmm0
  mulsd  0x10(%rdi),%xmm0
  subsd  %xmm0,%xmm4
  movapd %xmm6,%xmm0
  mulsd  0x8(%r14),%xmm0
  subsd  %xmm0,%xmm4
  movapd %xmm5,%xmm0
  mulsd  (%rax,%r15,2),%xmm0
  subsd  %xmm0,%xmm4
  movapd %xmm2,%xmm0
  mulsd  0x28(%rdx),%xmm0
  movsd  0x28(%rcx),%xmm3
  subsd  %xmm0,%xmm3
  movapd %xmm7,%xmm0
  mulsd  0x18(%rdi),%xmm0
  subsd  %xmm0,%xmm3
  movapd %xmm6,%xmm0
  mulsd  0x10(%r14),%xmm0
  subsd  %xmm0,%xmm3
  movapd %xmm5,%xmm0
  mulsd  0x8(%rax,%r15,2),%xmm0
  subsd  %xmm0,%xmm3
  movapd %xmm4,%xmm0
  mulsd  0x0(%r13),%xmm0
  subsd  %xmm0,%xmm3
  mov    -0x28(%rsp),%r13
  add    %rdx,%r13
  movapd %xmm2,%xmm1
  mulsd  0x30(%rdx),%xmm1
  movsd  0x30(%rcx),%xmm0
  subsd  %xmm1,%xmm0
  movapd %xmm0,%xmm8
  movapd %xmm7,%xmm0
  mulsd  0x20(%rdi),%xmm0
  subsd  %xmm0,%xmm8
  movapd %xmm6,%xmm0
  mulsd  0x18(%r14),%xmm0
  subsd  %xmm0,%xmm8
  movapd %xmm5,%xmm0
  mulsd  0x10(%rax,%r15,2),%xmm0
  subsd  %xmm0,%xmm8
  movapd %xmm4,%xmm0
  mulsd  0x8(%r13,%rsi,1),%xmm0
  subsd  %xmm0,%xmm8
  movapd %xmm3,%xmm0
  mulsd  (%rax,%r15,4),%xmm0
  subsd  %xmm0,%xmm8
  movapd %xmm2,%xmm9
  mulsd  0x38(%rdx),%xmm9
  movsd  0x38(%rcx),%xmm0
  movapd %xmm0,%xmm1
  subsd  %xmm9,%xmm1
  movapd %xmm7,%xmm0
  mulsd  0x28(%rdi),%xmm0
  subsd  %xmm0,%xmm1
  movapd %xmm6,%xmm0
  mulsd  0x20(%r14),%xmm0
  subsd  %xmm0,%xmm1
  movapd %xmm5,%xmm0
  mulsd  0x18(%rax,%r15,2),%xmm0
  subsd  %xmm0,%xmm1
  movapd %xmm4,%xmm0
  mulsd  0x10(%r13,%rsi,1),%xmm0
  subsd  %xmm0,%xmm1
  movapd %xmm3,%xmm0
  mulsd  0x8(%rax,%r15,4),%xmm0
  subsd  %xmm0,%xmm1
  movapd %xmm8,%xmm0
  mulsd  (%r11),%xmm0
  subsd  %xmm0,%xmm1
  movsd  %xmm7,0x8(%rcx)
  movsd  %xmm6,0x10(%rcx)
  movsd  %xmm5,0x18(%rcx)
  movsd  %xmm4,0x20(%rcx)
  movsd  %xmm3,0x28(%rcx)
  movsd  %xmm8,0x30(%rcx)
  movsd  %xmm1,0x38(%rcx)
  mov    -0x78(%rsp),%esi
  cmp    %esi,-0x54(%rsp)
  jle    L63
  mov    -0x1c(%rsp),%eax
  sub    %esi,%eax
  lea    0x8(,%rax,8),%r13
  mov    $0x0,%eax
  mov    %rcx,%rsi
L100:
  movapd %xmm2,%xmm9
  mulsd  0x40(%rdx,%rax,1),%xmm9
  movsd  0x40(%rsi,%rax,1),%xmm0
  subsd  %xmm9,%xmm0
  movapd %xmm7,%xmm9
  mulsd  0x30(%r8,%rax,1),%xmm9
  subsd  %xmm9,%xmm0
  movapd %xmm6,%xmm9
  mulsd  0x28(%r9,%rax,1),%xmm9
  subsd  %xmm9,%xmm0
  movapd %xmm5,%xmm9
  mulsd  0x20(%rbp,%rax,1),%xmm9
  subsd  %xmm9,%xmm0
  movapd %xmm4,%xmm9
  mulsd  0x18(%r10,%rax,1),%xmm9
  subsd  %xmm9,%xmm0
  movapd %xmm3,%xmm9
  mulsd  0x10(%r12,%rax,1),%xmm9
  subsd  %xmm9,%xmm0
  movapd %xmm8,%xmm9
  mulsd  0x8(%r11,%rax,1),%xmm9
  subsd  %xmm9,%xmm0
  movapd %xmm1,%xmm9
  mulsd  (%rbx,%rax,1),%xmm9
  subsd  %xmm9,%xmm0
  movsd  %xmm0,0x40(%rsi,%rax,1)
  add    $0x8,%rax
  cmp    %r13,%rax
  jne    L100
L63:
  mov    -0x50(%rsp),%rax
  add    %rax,%rdx
  addl   $0x8,-0x78(%rsp)
  mov    -0x78(%rsp),%ebx
  add    $0x40,%rcx
  add    %rax,%rdi
  add    %rax,%r14
  add    %rax,-0x68(%rsp)
  add    %rax,-0x70(%rsp)
  cmp    -0x20(%rsp),%ebx
  jne    L29
  mov    -0x4(%rsp),%eax
  shr    $0x3,%eax
  add    $0x1,%eax
  lea    0x0(,%rax,8),%r12d
  mov    %eax,%eax
  imul   -0x50(%rsp),%rax
  add    %rax,-0x18(%rsp)
L71:
  mov    -0x54(%rsp),%r14d
  lea    -0x3(%r14),%r13d
  cmp    %r12d,%r13d
  jle    L76
  mov    -0x8(%rsp),%ebx
  movslq %ebx,%rax
  add    $0x1,%rax
  lea    0x0(,%rax,8),%rdi
  lea    0x8(%rdi),%rdx
  lea    0x0(,%rbx,4),%ecx
  movslq %ecx,%rcx
  lea    0x20(,%rcx,8),%r15
  movslq %r12d,%rcx
  mov    -0x10(%rsp),%rbx
  lea    (%rbx,%rcx,8),%rsi
  mov    -0x18(%rsp),%rcx
  lea    (%rcx,%rdx,1),%r11
  lea    0x8(%rdi,%rdx,1),%rbp
  add    %rcx,%rbp
  shl    $0x4,%rax
  add    %rdx,%rax
  mov    %rax,-0x78(%rsp)
  mov    %r12d,%ebx
  mov    %r14d,%eax
  lea    -0x1(%r14),%r14d
  mov    %r12d,-0x70(%rsp)
  mov    %eax,%r12d
L3:
  mov    %r11,%rdi
  lea    -0x8(%rbp),%r9
  mov    -0x78(%rsp),%rax
  lea    (%rcx,%rax,1),%r8
  mov    %rsi,%rdx
  movsd  (%rsi),%xmm5
  movapd %xmm5,%xmm0
  mulsd  0x8(%rcx),%xmm0
  movsd  0x8(%rsi),%xmm4
  subsd  %xmm0,%xmm4
  movapd %xmm5,%xmm0
  mulsd  0x10(%rcx),%xmm0
  movsd  0x10(%rsi),%xmm3
  subsd  %xmm0,%xmm3
  movapd %xmm4,%xmm0
  mulsd  (%r11),%xmm0
  subsd  %xmm0,%xmm3
  movapd %xmm5,%xmm0
  mulsd  0x18(%rcx),%xmm0
  movsd  0x18(%rsi),%xmm2
  subsd  %xmm0,%xmm2
  movapd %xmm4,%xmm0
  mulsd  0x8(%r11),%xmm0
  subsd  %xmm0,%xmm2
  movapd %xmm3,%xmm0
  mulsd  -0x8(%rbp),%xmm0
  subsd  %xmm0,%xmm2
  movsd  %xmm4,0x8(%rsi)
  movsd  %xmm3,0x10(%rsi)
  movsd  %xmm2,0x18(%rsi)
  add    $0x4,%ebx
  cmp    %ebx,%r12d
  jle    L66
  mov    %r14d,%eax
  sub    %ebx,%eax
  lea    0x8(,%rax,8),%r10
  mov    $0x0,%eax
L5:
  movapd %xmm5,%xmm1
  mulsd  0x20(%rcx,%rax,1),%xmm1
  movsd  0x20(%rdx,%rax,1),%xmm0
  subsd  %xmm1,%xmm0
  movapd %xmm4,%xmm1
  mulsd  0x10(%rdi,%rax,1),%xmm1
  subsd  %xmm1,%xmm0
  movapd %xmm3,%xmm1
  mulsd  0x8(%r9,%rax,1),%xmm1
  subsd  %xmm1,%xmm0
  movapd %xmm2,%xmm1
  mulsd  (%r8,%rax,1),%xmm1
  subsd  %xmm1,%xmm0
  movsd  %xmm0,0x20(%rdx,%rax,1)
  add    $0x8,%rax
  cmp    %r10,%rax
  jne    L5
L66:
  add    %r15,%rcx
  add    $0x20,%rsi
  add    %r15,%r11
  add    %r15,%rbp
  cmp    %r13d,%ebx
  jl     L3
  mov    -0x70(%rsp),%r12d
  mov    -0x54(%rsp),%eax
  lea    -0x4(%rax),%edx
  sub    %r12d,%edx
  mov    %edx,%eax
  shr    $0x2,%eax
  and    $0xfffffffc,%edx
  lea    0x4(%r12,%rdx,1),%r12d
  add    $0x1,%eax
  mov    %eax,%eax
  imul   %r15,%rax
  add    %rax,-0x18(%rsp)
L76:
  mov    -0x54(%rsp),%edi
  lea    -0x1(%rdi),%eax
  cmp    %r12d,%eax
  jle    L44
  movslq %r12d,%rax
  mov    -0x10(%rsp),%rsi
  movsd  (%rsi,%rax,8),%xmm2
  lea    0x8(%rsi,%rax,8),%rax
  mov    -0x18(%rsp),%r8
  movapd %xmm2,%xmm0
  mulsd  0x8(%r8),%xmm0
  movsd  (%rax),%xmm1
  subsd  %xmm0,%xmm1
  movsd  %xmm1,(%rax)
  lea    0x2(%r12),%eax
  cmp    %eax,%edi
  jle    L44
  movslq -0x8(%rsp),%rdx
  lea    0x10(%r8,%rdx,8),%rcx
  cltq
  mov    $0x0,%edx
L68:
  movapd %xmm2,%xmm3
  mulsd  0x10(%r8,%rdx,1),%xmm3
  movsd  (%rsi,%rax,8),%xmm0
  subsd  %xmm3,%xmm0
  movapd %xmm1,%xmm3
  mulsd  (%rcx,%rdx,1),%xmm3
  subsd  %xmm3,%xmm0
  movsd  %xmm0,(%rsi,%rax,8)
  add    $0x8,%rdx
  add    $0x1,%rax
  cmp    %eax,%edi
  jg     L68
L44:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L12:
  mov    $0x0,%r12d
  jmp    L71
```

assistant: ```c
void slsolve(int ldm, int ncol, double *M, double *rhs) {
  int k;
  double x0, x1, x2, x3, x4, x5, x6, x7;
  double *M0;
  register double *Mki0, *Mki1, *Mki2, *Mki3, *Mki4, *Mki5, *Mki6, *Mki7;
  register int firstcol = 0;
  M0 = &M[0];
  while (firstcol < ncol - 7) {
    Mki0 = M0 + 1;
    Mki1 = Mki0 + ldm + 1;
    Mki2 = Mki1 + ldm + 1;
    Mki3 = Mki2 + ldm + 1;
    Mki4 = Mki3 + ldm + 1;
    Mki5 = Mki4 + ldm + 1;
    Mki6 = Mki5 + ldm + 1;
    Mki7 = Mki6 + ldm + 1;
    x0 = rhs[firstcol];
    x1 = rhs[firstcol + 1] - x0 * *Mki0++;
    x2 = rhs[firstcol + 2] - x0 * *Mki0++ - x1 * *Mki1++;
    x3 = rhs[firstcol + 3] - x0 * *Mki0++ - x1 * *Mki1++ - x2 * *Mki2++;
    x4 = rhs[firstcol + 4] - x0 * *Mki0++ - x1 * *Mki1++ - x2 * *Mki2++ - x3 * *Mki3++;
    x5 = rhs[firstcol + 5] - x0 * *Mki0++ - x1 * *Mki1++ - x2 * *Mki2++ - x3 * *Mki3++ - x4 * *Mki4++;
    x6 = rhs[firstcol + 6] - x0 * *Mki0++ - x1 * *Mki1++ - x2 * *Mki2++ - x3 * *Mki3++ - x4 * *Mki4++ - x5 * *Mki5++;
    x7 = rhs[firstcol + 7] - x0 * *Mki0++ - x1 * *Mki1++ - x2 * *Mki2++ - x3 * *Mki3++ - x4 * *Mki4++ - x5 * *Mki5++ - x6 * *Mki6++;
    rhs[++firstcol] = x1;
    rhs[++firstcol] = x2;
    rhs[++firstcol] = x3;
    rhs[++firstcol] = x4;
    rhs[++firstcol] = x5;
    rhs[++firstcol] = x6;
    rhs[++firstcol] = x7;
    ++firstcol;
    for (k = firstcol; k < ncol; k++)
      rhs[k] = rhs[k] - x0 * *Mki0++ - x1 * *Mki1++ - x2 * *Mki2++ - x3 * *Mki3++ - x4 * *Mki4++ - x5 * *Mki5++ - x6 * *Mki6++ - x7 * *Mki7++;
    M0 += 8 * ldm + 8;
  }
  while (firstcol < ncol - 3) {
    Mki0 = M0 + 1;
    Mki1 = Mki0 + ldm + 1;
    Mki2 = Mki1 + ldm + 1;
    Mki3 = Mki2 + ldm + 1;
    x0 = rhs[firstcol];
    x1 = rhs[firstcol + 1] - x0 * *Mki0++;
    x2 = rhs[firstcol + 2] - x0 * *Mki0++ - x1 * *Mki1++;
    x3 = rhs[firstcol + 3] - x0 * *Mki0++ - x1 * *Mki1++ - x2 * *Mki2++;
    rhs[++firstcol] = x1;
    rhs[++firstcol] = x2;
    rhs[++firstcol] = x3;
    ++firstcol;
    for (k = firstcol; k < ncol; k++)
      rhs[k] = rhs[k] - x0 * *Mki0++ - x1 * *Mki1++ - x2 * *Mki2++ - x3 * *Mki3++;
    M0 += 4 * ldm + 4;
  }
  if (firstcol < ncol - 1) {
    Mki0 = M0 + 1;
    Mki1 = Mki0 + ldm + 1;
    x0 = rhs[firstcol];
    x1 = rhs[firstcol + 1] - x0 * *Mki0++;
    rhs[++firstcol] = x1;
    ++firstcol;
    for (k = firstcol; k < ncol; k++)
      rhs[k] = rhs[k] - x0 * *Mki0++ - x1 * *Mki1++;
  }
}
```