void string16_4(char *S[16]) {
  S[15] = (char *)"AADD";
  S[14] = (char *)"AADC";
  S[13] = (char *)"AADB";
  S[12] = (char *)"AADA";
  S[11] = (char *)"AACD";
  S[10] = (char *)"AACC";
  S[9] = (char *)"AACB";
  S[8] = (char *)"AACA";
  S[7] = (char *)"AABD";
  S[6] = (char *)"AABC";
  S[5] = (char *)"AABB";
  S[4] = (char *)"AABA";
  S[3] = (char *)"AAAD";
  S[2] = (char *)"AAAC";
  S[1] = (char *)"AAAB";
  S[0] = (char *)"AAAA";
}


x86 assembly (clang, -O0):
<string16_4>:
push   %rbp
mov    %rsp,%rbp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rax
lea    0xeed(%rip),%rcx
mov    %rcx,0x78(%rax)
mov    -0x8(%rbp),%rax
lea    0xee3(%rip),%rcx
mov    %rcx,0x70(%rax)
mov    -0x8(%rbp),%rax
lea    0xed9(%rip),%rcx
mov    %rcx,0x68(%rax)
mov    -0x8(%rbp),%rax
lea    0xecf(%rip),%rcx
mov    %rcx,0x60(%rax)
mov    -0x8(%rbp),%rax
lea    0xec5(%rip),%rcx
mov    %rcx,0x58(%rax)
mov    -0x8(%rbp),%rax
lea    0xebb(%rip),%rcx
mov    %rcx,0x50(%rax)
mov    -0x8(%rbp),%rax
lea    0xeb1(%rip),%rcx
mov    %rcx,0x48(%rax)
mov    -0x8(%rbp),%rax
lea    0xea7(%rip),%rcx
mov    %rcx,0x40(%rax)
mov    -0x8(%rbp),%rax
lea    0xe9d(%rip),%rcx
mov    %rcx,0x38(%rax)
mov    -0x8(%rbp),%rax
lea    0xe93(%rip),%rcx
mov    %rcx,0x30(%rax)
mov    -0x8(%rbp),%rax
lea    0xe89(%rip),%rcx
mov    %rcx,0x28(%rax)
mov    -0x8(%rbp),%rax
lea    0xe7f(%rip),%rcx
mov    %rcx,0x20(%rax)
mov    -0x8(%rbp),%rax
lea    0xe75(%rip),%rcx
mov    %rcx,0x18(%rax)
mov    -0x8(%rbp),%rax
lea    0xe6b(%rip),%rcx
mov    %rcx,0x10(%rax)
mov    -0x8(%rbp),%rax
lea    0xe61(%rip),%rcx
mov    %rcx,0x8(%rax)
mov    -0x8(%rbp),%rax
lea    0xe57(%rip),%rcx
mov    %rcx,(%rax)
pop    %rbp
ret

x86 assembly (clang, -O2):
<string16_4>:
lea    0xef9(%rip),%rax
mov    %rax,0x78(%rdi)
lea    0xef3(%rip),%rax
mov    %rax,0x70(%rdi)
lea    0xeed(%rip),%rax
mov    %rax,0x68(%rdi)
lea    0xee7(%rip),%rax
mov    %rax,0x60(%rdi)
lea    0xee1(%rip),%rax
mov    %rax,0x58(%rdi)
lea    0xedb(%rip),%rax
mov    %rax,0x50(%rdi)
lea    0xed5(%rip),%rax
mov    %rax,0x48(%rdi)
lea    0xecf(%rip),%rax
mov    %rax,0x40(%rdi)
lea    0xec9(%rip),%rax
mov    %rax,0x38(%rdi)
lea    0xec3(%rip),%rax
mov    %rax,0x30(%rdi)
lea    0xebd(%rip),%rax
mov    %rax,0x28(%rdi)
lea    0xeb7(%rip),%rax
mov    %rax,0x20(%rdi)
lea    0xeb1(%rip),%rax
mov    %rax,0x18(%rdi)
lea    0xeab(%rip),%rax
mov    %rax,0x10(%rdi)
lea    0xea5(%rip),%rax
mov    %rax,0x8(%rdi)
lea    0xe9f(%rip),%rax
mov    %rax,(%rdi)
ret

LLVM IR (-O0):
@.str = [5 x i8] c"AADD\00"
@.str.1 = [5 x i8] c"AADC\00"
@.str.2 = [5 x i8] c"AADB\00"
@.str.3 = [5 x i8] c"AADA\00"
@.str.4 = [5 x i8] c"AACD\00"
@.str.5 = [5 x i8] c"AACC\00"
@.str.6 = [5 x i8] c"AACB\00"
@.str.7 = [5 x i8] c"AACA\00"
@.str.8 = [5 x i8] c"AABD\00"
@.str.9 = [5 x i8] c"AABC\00"
@.str.10 = [5 x i8] c"AABB\00"
@.str.11 = [5 x i8] c"AABA\00"
@.str.12 = [5 x i8] c"AAAD\00"
@.str.13 = [5 x i8] c"AAAC\00"
@.str.14 = [5 x i8] c"AAAB\00"
@.str.15 = [5 x i8] c"AAAA\00"
define void @string16_4(i8** %0) {
%2 = alloca i8**
store i8** %0, i8*** %2
%3 = load i8**, i8*** %2
%4 = getelementptr inbounds i8*, i8** %3, i64 15
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8** %4
%5 = load i8**, i8*** %2
%6 = getelementptr inbounds i8*, i8** %5, i64 14
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i8** %6
%7 = load i8**, i8*** %2
%8 = getelementptr inbounds i8*, i8** %7, i64 13
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0), i8** %8
%9 = load i8**, i8*** %2
%10 = getelementptr inbounds i8*, i8** %9, i64 12
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0), i8** %10
%11 = load i8**, i8*** %2
%12 = getelementptr inbounds i8*, i8** %11, i64 11
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.4, i64 0, i64 0), i8** %12
%13 = load i8**, i8*** %2
%14 = getelementptr inbounds i8*, i8** %13, i64 10
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.5, i64 0, i64 0), i8** %14
%15 = load i8**, i8*** %2
%16 = getelementptr inbounds i8*, i8** %15, i64 9
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.6, i64 0, i64 0), i8** %16
%17 = load i8**, i8*** %2
%18 = getelementptr inbounds i8*, i8** %17, i64 8
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.7, i64 0, i64 0), i8** %18
%19 = load i8**, i8*** %2
%20 = getelementptr inbounds i8*, i8** %19, i64 7
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.8, i64 0, i64 0), i8** %20
%21 = load i8**, i8*** %2
%22 = getelementptr inbounds i8*, i8** %21, i64 6
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.9, i64 0, i64 0), i8** %22
%23 = load i8**, i8*** %2
%24 = getelementptr inbounds i8*, i8** %23, i64 5
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.10, i64 0, i64 0), i8** %24
%25 = load i8**, i8*** %2
%26 = getelementptr inbounds i8*, i8** %25, i64 4
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.11, i64 0, i64 0), i8** %26
%27 = load i8**, i8*** %2
%28 = getelementptr inbounds i8*, i8** %27, i64 3
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.12, i64 0, i64 0), i8** %28
%29 = load i8**, i8*** %2
%30 = getelementptr inbounds i8*, i8** %29, i64 2
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.13, i64 0, i64 0), i8** %30
%31 = load i8**, i8*** %2
%32 = getelementptr inbounds i8*, i8** %31, i64 1
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.14, i64 0, i64 0), i8** %32
%33 = load i8**, i8*** %2
%34 = getelementptr inbounds i8*, i8** %33, i64 0
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.15, i64 0, i64 0), i8** %34
ret void
}

LLVM IR (-O2):
@.str = [5 x i8] c"AADD\00"
@.str.1 = [5 x i8] c"AADC\00"
@.str.2 = [5 x i8] c"AADB\00"
@.str.3 = [5 x i8] c"AADA\00"
@.str.4 = [5 x i8] c"AACD\00"
@.str.5 = [5 x i8] c"AACC\00"
@.str.6 = [5 x i8] c"AACB\00"
@.str.7 = [5 x i8] c"AACA\00"
@.str.8 = [5 x i8] c"AABD\00"
@.str.9 = [5 x i8] c"AABC\00"
@.str.10 = [5 x i8] c"AABB\00"
@.str.11 = [5 x i8] c"AABA\00"
@.str.12 = [5 x i8] c"AAAD\00"
@.str.13 = [5 x i8] c"AAAC\00"
@.str.14 = [5 x i8] c"AAAB\00"
@.str.15 = [5 x i8] c"AAAA\00"
define void @string16_4(i8** nocapture writeonly %0) {
%2 = getelementptr inbounds i8*, i8** %0, i64 15
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8** %2
%3 = getelementptr inbounds i8*, i8** %0, i64 14
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i8** %3
%4 = getelementptr inbounds i8*, i8** %0, i64 13
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0), i8** %4
%5 = getelementptr inbounds i8*, i8** %0, i64 12
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0), i8** %5
%6 = getelementptr inbounds i8*, i8** %0, i64 11
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.4, i64 0, i64 0), i8** %6
%7 = getelementptr inbounds i8*, i8** %0, i64 10
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.5, i64 0, i64 0), i8** %7
%8 = getelementptr inbounds i8*, i8** %0, i64 9
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.6, i64 0, i64 0), i8** %8
%9 = getelementptr inbounds i8*, i8** %0, i64 8
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.7, i64 0, i64 0), i8** %9
%10 = getelementptr inbounds i8*, i8** %0, i64 7
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.8, i64 0, i64 0), i8** %10
%11 = getelementptr inbounds i8*, i8** %0, i64 6
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.9, i64 0, i64 0), i8** %11
%12 = getelementptr inbounds i8*, i8** %0, i64 5
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.10, i64 0, i64 0), i8** %12
%13 = getelementptr inbounds i8*, i8** %0, i64 4
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.11, i64 0, i64 0), i8** %13
%14 = getelementptr inbounds i8*, i8** %0, i64 3
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.12, i64 0, i64 0), i8** %14
%15 = getelementptr inbounds i8*, i8** %0, i64 2
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.13, i64 0, i64 0), i8** %15
%16 = getelementptr inbounds i8*, i8** %0, i64 1
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.14, i64 0, i64 0), i8** %16
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.15, i64 0, i64 0), i8** %0
ret void
}