user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<BWTIncMergeBwt>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%r15
  mov    %rdx,-0x10(%rsp)
  mov    %rcx,%rdi
  mov    %r8d,-0x14(%rsp)
  mov    %r9d,%r13d
  movl   $0x0,(%rcx)
  test   %r8d,%r8d
  je     L59
  mov    %rsi,%r10
  mov    $0x0,%r9d
  mov    $0x0,%r8d
  mov    $0x0,%r12d
  mov    $0x0,%edx
  mov    $0x0,%r11d
  mov    %r8d,%esi
  mov    %r13d,%r14d
  jmp    L18
L59:
  mov    %r8d,%edx
  mov    %r8d,%r9d
  jmp    L164
L256:
  add    $0x1,%edx
  cmp    %edx,%r14d
  jb     L102
L68:
  mov    %edx,%r8d
  mov    (%r15,%r8,4),%eax
  cmp    %r11d,%eax
  ja     L70
  test   %eax,%eax
  je     L256
  mov    %esi,%eax
  mov    $0xf,%ecx
  sub    %r9d,%ecx
  add    %ecx,%ecx
  mov    (%rbx,%r8,4),%r8d
  shl    %cl,%r8d
  or     %r8d,(%rdi,%rax,4)
  add    $0x1,%r12d
  add    $0x1,%r9d
  cmp    $0x10,%r9d
  jne    L256
  add    $0x1,%esi
  mov    %esi,%eax
  movl   $0x0,(%rdi,%rax,4)
  mov    $0x0,%r9d
  jmp    L256
L70:
  cmp    %edx,%r14d
  cmovb  -0x14(%rsp),%eax
  jmp    L93
L282:
  mov    %ecx,%r8d
  sub    %r9d,%r8d
  lea    (%r8,%r8,1),%ebx
  mov    %ebx,-0x8(%rsp)
  mov    $0x10,%r13d
  sub    %ecx,%r13d
  add    %r9d,%r13d
  add    %r13d,%r13d
  mov    %esi,%ebp
  mov    -0x1c(%rsp),%r8d
  add    %ecx,%ecx
  mov    (%r10,%r8,4),%ebx
  shl    %cl,%ebx
  lea    (%r9,%r9,1),%ecx
  shr    %cl,%ebx
  mov    -0x1c(%rsp),%ecx
  add    $0x1,%ecx
  mov    %ecx,%ecx
  mov    (%r10,%rcx,4),%r8d
  mov    %r13d,%ecx
  shr    %cl,%r8d
  or     %ebx,%r8d
  or     %r8d,(%rdi,%rbp,4)
  mov    $0x10,%ebx
  sub    %r9d,%ebx
  mov    -0x18(%rsp),%r8d
  cmp    %r8d,%ebx
  cmova  %r8d,%ebx
  add    %r11d,%ebx
  cmp    %ebx,%eax
  jbe    L251
  mov    -0x1c(%rsp),%r9d
  mov    %r12d,-0x4(%rsp)
  mov    -0x8(%rsp),%r12d
L223:
  mov    %r9d,%ecx
  add    $0x1,%r9d
  mov    %r9d,%r8d
  sub    -0x1c(%rsp),%r8d
  lea    (%r8,%rsi,1),%ebp
  lea    0x2(%rcx),%ecx
  mov    (%r10,%rcx,4),%r8d
  mov    %r13d,%ecx
  shr    %cl,%r8d
  mov    %r9d,%ecx
  mov    (%r10,%rcx,4),%r11d
  mov    %r12d,%ecx
  shl    %cl,%r11d
  or     %r11d,%r8d
  mov    %r8d,(%rdi,%rbp,4)
  add    $0x10,%ebx
  cmp    %ebx,%eax
  ja     L223
  mov    -0x4(%rsp),%r12d
  jmp    L251
L213:
  mov    %esi,%ebx
  lea    (%r9,%r9,1),%ecx
  mov    -0x1c(%rsp),%ebp
  mov    %ebp,%r8d
  mov    (%r10,%r8,4),%r8d
  shl    %cl,%r8d
  shr    %cl,%r8d
  or     %r8d,(%rdi,%rbx,4)
  mov    $0x10,%r8d
  sub    %r9d,%r8d
  mov    -0x18(%rsp),%ebx
  cmp    %ebx,%r8d
  cmova  %ebx,%r8d
  add    %r11d,%r8d
  cmp    %r8d,%eax
  jbe    L251
  mov    %ebp,%ecx
  mov    %ebp,%ebx
L128:
  add    $0x1,%ecx
  mov    %ecx,%r9d
  sub    %ebx,%r9d
  lea    (%r9,%rsi,1),%r9d
  mov    %ecx,%r11d
  mov    (%r10,%r11,4),%r11d
  mov    %r11d,(%rdi,%r9,4)
  add    $0x10,%r8d
  cmp    %r8d,%eax
  ja     L128
  jmp    L251
L152:
  mov    %esi,%ecx
  lea    (%rdi,%rcx,4),%r11
  mov    $0x10,%ecx
  sub    %r9d,%ecx
  add    %ecx,%ecx
  mov    (%r11),%r8d
  shr    %cl,%r8d
  shl    %cl,%r8d
  mov    %r8d,(%r11)
  jmp    L72
L292:
  mov    %esi,%r8d
  mov    %r14d,%r13d
  cmp    %r14d,%edx
  ja     L22
L164:
  mov    $0xf,%r10d
  mov    -0x10(%rsp),%r11
  jmp    L119
L78:
  add    $0x1,%edx
  cmp    %edx,%r13d
  jb     L22
L119:
  mov    %edx,%eax
  cmpl   $0x0,(%r15,%rax,4)
  je     L78
  mov    %r8d,%esi
  mov    %r10d,%ecx
  sub    %r9d,%ecx
  add    %ecx,%ecx
  mov    (%r11,%rax,4),%eax
  shl    %cl,%eax
  or     %eax,(%rdi,%rsi,4)
  add    $0x1,%r9d
  cmp    $0x10,%r9d
  jne    L78
  add    $0x1,%r8d
  mov    %r8d,%eax
  movl   $0x0,(%rdi,%rax,4)
  mov    $0x0,%r9d
  jmp    L78
L102:
  mov    -0x14(%rsp),%eax
L93:
  mov    %eax,%ebx
  sub    %r11d,%ebx
  mov    %ebx,-0x18(%rsp)
  mov    %r11d,%ebx
  shr    $0x4,%ebx
  mov    %ebx,-0x1c(%rsp)
  mov    %r11d,%ecx
  and    $0xf,%ecx
  cmp    %ecx,%r9d
  jb     L282
  jbe    L213
  mov    %r9d,%r13d
  sub    %ecx,%r13d
  lea    0x0(%r13,%r13,1),%ebx
  mov    %ebx,-0x8(%rsp)
  mov    %ecx,%r8d
  sub    %r9d,%r8d
  lea    0x20(%r8,%r8,1),%r13d
  mov    %esi,%ebx
  mov    -0x1c(%rsp),%ebp
  mov    %ebp,%r8d
  add    %ecx,%ecx
  mov    (%r10,%r8,4),%r8d
  shl    %cl,%r8d
  lea    (%r9,%r9,1),%ecx
  shr    %cl,%r8d
  or     %r8d,(%rdi,%rbx,4)
  mov    $0x10,%ebx
  sub    %r9d,%ebx
  mov    -0x18(%rsp),%ecx
  cmp    %ecx,%ebx
  cmova  %ecx,%ebx
  add    %r11d,%ebx
  cmp    %ebx,%eax
  jbe    L251
  mov    %ebp,%r9d
  sub    %ebp,%esi
  mov    %r12d,-0x1c(%rsp)
  mov    -0x8(%rsp),%r12d
L44:
  mov    %r9d,%ecx
  add    $0x1,%r9d
  lea    (%rsi,%r9,1),%ebp
  mov    %ecx,%ecx
  mov    (%r10,%rcx,4),%r8d
  mov    %r13d,%ecx
  shl    %cl,%r8d
  mov    %r9d,%ecx
  mov    (%r10,%rcx,4),%r11d
  mov    %r12d,%ecx
  shr    %cl,%r11d
  or     %r11d,%r8d
  mov    %r8d,(%rdi,%rbp,4)
  add    $0x10,%ebx
  cmp    %ebx,%eax
  ja     L44
  mov    -0x1c(%rsp),%r12d
L251:
  add    -0x18(%rsp),%r12d
  mov    %r12d,%esi
  shr    $0x4,%esi
  mov    %r12d,%r9d
  and    $0xf,%r9d
  jne    L152
  mov    %esi,%ecx
  movl   $0x0,(%rdi,%rcx,4)
L72:
  cmp    -0x14(%rsp),%eax
  jae    L292
  mov    %eax,%r11d
L18:
  mov    -0x10(%rsp),%rbx
  cmp    %edx,%r14d
  jae    L68
  jmp    L102
L22:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
void BWTIncMergeBwt(const unsigned int *sortedRank, const unsigned int *oldBwt, const unsigned int *insertBwt, unsigned int *__restrict mergedBwt, const unsigned int numOldBwt, const unsigned int numInsertBwt) {
  unsigned int bitsInWordMinusBitPerChar;
  unsigned int leftShift, rightShift;
  unsigned int o;
  unsigned int oIndex, iIndex, mIndex;
  unsigned int mWord, mChar, oWord, oChar;
  unsigned int numInsert;
  bitsInWordMinusBitPerChar = 32 - 2;
  oIndex = 0;
  iIndex = 0;
  mIndex = 0;
  mWord = 0;
  mChar = 0;
  mergedBwt[0] = 0;
  while (oIndex < numOldBwt) {
    while (iIndex <= numInsertBwt && sortedRank[iIndex] <= oIndex) {
      if (sortedRank[iIndex] != 0) {
        mergedBwt[mWord] |= insertBwt[iIndex] << (32 - (mChar + 1) * 2);
        mIndex++;
        mChar++;
        if (mChar == 16) {
          mChar = 0;
          mWord++;
          mergedBwt[mWord] = 0;
        }
      }
      iIndex++;
    }
    if (iIndex <= numInsertBwt) {
      o = sortedRank[iIndex];
    } else {
      o = numOldBwt;
    }
    numInsert = o - oIndex;
    oWord = oIndex / 16;
    oChar = oIndex - oWord * 16;
    if (oChar > mChar) {
      leftShift = (oChar - mChar) * 2;
      rightShift = (16 + mChar - oChar) * 2;
      mergedBwt[mWord] = mergedBwt[mWord] | (oldBwt[oWord] << (oChar * 2) >> (mChar * 2)) | (oldBwt[oWord + 1] >> rightShift);
      oIndex += (((numInsert) < (16 - mChar)) ? (numInsert) : (16 - mChar));
      while (o > oIndex) {
        oWord++;
        mWord++;
        mergedBwt[mWord] = (oldBwt[oWord] << leftShift) | (oldBwt[oWord + 1] >> rightShift);
        oIndex += 16;
      }
    } else if (oChar < mChar) {
      rightShift = (mChar - oChar) * 2;
      leftShift = (16 + oChar - mChar) * 2;
      mergedBwt[mWord] = mergedBwt[mWord] | (oldBwt[oWord] << (oChar * 2) >> (mChar * 2));
      oIndex += (((numInsert) < (16 - mChar)) ? (numInsert) : (16 - mChar));
      while (o > oIndex) {
        oWord++;
        mWord++;
        mergedBwt[mWord] = (oldBwt[oWord - 1] << leftShift) | (oldBwt[oWord] >> rightShift);
        oIndex += 16;
      }
    } else {
      mergedBwt[mWord] = mergedBwt[mWord] | ((oldBwt[oWord]) << (mChar * 2) >> (mChar * 2));
      oIndex += (((numInsert) < (16 - mChar)) ? (numInsert) : (16 - mChar));
      while (o > oIndex) {
        oWord++;
        mWord++;
        mergedBwt[mWord] = oldBwt[oWord];
        oIndex += 16;
      }
    }
    oIndex = o;
    mIndex += numInsert;
    mWord = mIndex / 16;
    mChar = mIndex - mWord * 16;
    if (mChar == 0) {
      mergedBwt[mWord] = 0;
    } else {
      mergedBwt[mWord] = ((mergedBwt[mWord]) >> ((32 - mChar * 2)) << ((32 - mChar * 2)));
    }
  }
  while (iIndex <= numInsertBwt) {
    if (sortedRank[iIndex] != 0) {
      mergedBwt[mWord] |= insertBwt[iIndex] << (32 - (mChar + 1) * 2);
      mIndex++;
      mChar++;
      if (mChar == 16) {
        mChar = 0;
        mWord++;
        mergedBwt[mWord] = 0;
      }
    }
    iIndex++;
  }
}
```