user: 下面的汇编指令对应的C源代码是什么：

```asm
<conv_alg2>:
  endbr64
  test   %ecx,%ecx
  jle    L26
  push   %r15
  movss  (%rdi),%xmm4
  mov    %esi,%r9d
  mov    %rdx,%r10
  push   %r14
  movss  0x4(%rdi),%xmm5
  mov    %ecx,%r11d
  xor    %edx,%edx
  push   %r13
  movss  0x8(%rdi),%xmm6
  lea    -0x3(%rsi),%ecx
  mov    $0x3,%esi
  push   %r12
  push   %rbp
  lea    0xc(%r8),%rbp
  push   %rbx
  mov    %rbp,%rbx
  xchg   %ax,%ax
L57:
  movss  (%r10,%rdx,4),%xmm1
  movaps %xmm4,%xmm3
  mov    %edx,%r12d
  mov    %esi,%eax
  movss  0x4(%r10,%rdx,4),%xmm2
  lea    0x10(%rbx),%rbp
  movaps %xmm1,%xmm0
  movaps %xmm1,%xmm7
  mulss  %xmm4,%xmm0
  addss  -0xc(%rbx),%xmm0
  mulss  %xmm2,%xmm3
  mulss  %xmm6,%xmm7
  addss  -0x4(%rbx),%xmm7
  movss  %xmm0,-0xc(%rbx)
  movaps %xmm1,%xmm0
  mulss  %xmm5,%xmm0
  addss  -0x8(%rbx),%xmm0
  addss  %xmm3,%xmm0
  movss  0x8(%r10,%rdx,4),%xmm3
  movss  %xmm0,-0x8(%rbx)
  movaps %xmm5,%xmm0
  mulss  %xmm2,%xmm0
  addss  %xmm7,%xmm0
  movaps %xmm3,%xmm7
  mulss  %xmm4,%xmm7
  addss  %xmm7,%xmm0
  movss  %xmm0,-0x4(%rbx)
  cmp    %esi,%r9d
  jle    L73
  mov    %r9d,%r13d
  lea    -0x1(%rcx),%ebp
  movss  0xc(%r10,%rdx,4),%xmm7
  sub    %edx,%r13d
  cmp    $0x2,%ebp
  jbe    L49
  mov    %ecx,%ebp
  movaps %xmm1,%xmm11
  movaps %xmm2,%xmm10
  mov    %rdi,%rax
  shr    $0x2,%ebp
  movaps %xmm3,%xmm9
  movaps %xmm7,%xmm8
  shufps $0x0,%xmm11,%xmm11
  lea    -0x1(%rbp),%r14d
  lea    0x10(%rbx),%rbp
  shufps $0x0,%xmm10,%xmm10
  shufps $0x0,%xmm9,%xmm9
  shl    $0x4,%r14
  shufps $0x0,%xmm8,%xmm8
  add    %rbp,%r14
  xchg   %ax,%ax
L10:
  movups 0xc(%rax),%xmm0
  movups (%rbx),%xmm13
  add    $0x10,%rbx
  add    $0x10,%rax
  movups -0x8(%rax),%xmm12
  mulps  %xmm11,%xmm0
  mulps  %xmm10,%xmm12
  addps  %xmm13,%xmm0
  addps  %xmm12,%xmm0
  movups -0xc(%rax),%xmm12
  mulps  %xmm9,%xmm12
  addps  %xmm12,%xmm0
  movups -0x10(%rax),%xmm12
  mulps  %xmm8,%xmm12
  addps  %xmm12,%xmm0
  movups %xmm0,-0x10(%rbx)
  cmp    %r14,%rbx
  jne    L10
  mov    %ecx,%r14d
  and    $0xfffffffc,%r14d
  lea    (%rsi,%r14,1),%eax
  cmp    %ecx,%r14d
  je     L73
L76:
  sub    %r14d,%r13d
  lea    -0x3(%r13),%r15d
  cmp    $0x4,%r13d
  je     L29
  lea    0x3(%r14,%rdx,1),%rbx
  add    $0x3,%r14
  movaps %xmm1,%xmm8
  movq   (%rdi,%r14,4),%xmm0
  shufps $0xe0,%xmm8,%xmm8
  lea    (%r8,%rbx,4),%r13
  movaps %xmm2,%xmm9
  lea    0x0(,%r14,4),%rbx
  shufps $0xe0,%xmm9,%xmm9
  mulps  %xmm8,%xmm0
  movq   0x0(%r13),%xmm8
  addps  %xmm8,%xmm0
  movq   -0x4(%rdi,%rbx,1),%xmm8
  mulps  %xmm9,%xmm8
  movaps %xmm3,%xmm9
  shufps $0xe0,%xmm9,%xmm9
  addps  %xmm8,%xmm0
  movq   -0x8(%rdi,%rbx,1),%xmm8
  mulps  %xmm9,%xmm8
  movaps %xmm7,%xmm9
  shufps $0xe0,%xmm9,%xmm9
  addps  %xmm8,%xmm0
  movq   -0xc(%rdi,%rbx,1),%xmm8
  mov    %r15d,%ebx
  and    $0xfffffffe,%ebx
  mulps  %xmm9,%xmm8
  add    %ebx,%eax
  addps  %xmm8,%xmm0
  movlps %xmm0,0x0(%r13)
  cmp    %ebx,%r15d
  je     L73
L29:
  movslq %eax,%rbx
  sub    %r12d,%eax
  cltq
  lea    (%r8,%rbx,4),%rbx
  mulss  -0x4(%rdi,%rax,4),%xmm2
  mulss  (%rdi,%rax,4),%xmm1
  addss  (%rbx),%xmm1
  mulss  -0x8(%rdi,%rax,4),%xmm3
  mulss  -0xc(%rdi,%rax,4),%xmm7
  addss  %xmm2,%xmm1
  addss  %xmm3,%xmm1
  addss  %xmm7,%xmm1
  movss  %xmm1,(%rbx)
L73:
  add    $0x4,%rdx
  add    $0x4,%esi
  sub    $0x4,%ecx
  mov    %rbp,%rbx
  cmp    %edx,%r11d
  jg     L57
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L49:
  xor    %r14d,%r14d
  lea    0x10(%rbx),%rbp
  jmp    L76
L26:
  ret
```

assistant: ```c
void conv_alg2(const float *restrict a, int n, const float *restrict f, int m, float *restrict b) {
  for (int j = 0; j < m; j += 4) {
    for (int i = j + 0; i < j + 3; i++)
      b[i] += f[j + 0] * a[i - j - 0];
    for (int i = j + 1; i < j + 3; i++)
      b[i] += f[j + 1] * a[i - j - 1];
    for (int i = j + 2; i < j + 3; i++)
      b[i] += f[j + 2] * a[i - j - 2];
    for (int i = j + 3; i < n; i++) {
      b[i] += f[j + 0] * a[i - j - 0];
      b[i] += f[j + 1] * a[i - j - 1];
      b[i] += f[j + 2] * a[i - j - 2];
      b[i] += f[j + 3] * a[i - j - 3];
    }
  }
}
```