#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ printf(char *, ...);
void print128(unsigned char *bytes) {
  int j;
  for (j = 0; j < 16; j++) {
    printf("%02x", bytes[j]);
    if ((j % 4) == 3)
      printf(" ");
  }
}


x86 assembly (clang, -O0):
<print128>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
cmpl   $0x10,-0xc(%rbp)
jge    117c <print128+0x6c>
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
movzbl (%rax,%rcx,1),%esi
lea    0xec0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
mov    $0x4,%ecx
cltd
idiv   %ecx
cmp    $0x3,%edx
jne    1169 <print128+0x59>
lea    0xea3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    116e <print128+0x5e>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1123 <print128+0x13>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<print128>:
push   %r15
push   %r14
push   %rbx
mov    %rdi,%r15
lea    0xed1(%rip),%r14
xor    %ebx,%ebx
jmp    114a <print128+0x2a>
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
add    $0x1,%rbx
cmp    $0x10,%rbx
je     116d <print128+0x4d>
movzbl (%r15,%rbx,1),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %ebx,%eax
not    %eax
test   $0x3,%al
jne    1140 <print128+0x20>
mov    $0x20,%edi
call   1030 <putchar@plt>
jmp    1140 <print128+0x20>
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [5 x i8] c"%02x\00"
@.str.1 = [2 x i8] c" \00"
define void @print128(i8* %0) {
%2 = alloca i8*
%3 = alloca i32
store i8* %0, i8** %2
store i32 0, i32* %3
br label %4
4: ; preds = %21, %1
%5 = load i32, i32* %3
%6 = icmp slt i32 %5, 16
br i1 %6, label %7, label %24
7: ; preds = %4
%8 = load i8*, i8** %2
%9 = load i32, i32* %3
%10 = sext i32 %9 to i64
%11 = getelementptr inbounds i8, i8* %8, i64 %10
%12 = load i8, i8* %11
%13 = zext i8 %12 to i32
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %13)
%15 = load i32, i32* %3
%16 = srem i32 %15, 4
%17 = icmp eq i32 %16, 3
br i1 %17, label %18, label %20
18: ; preds = %7
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
br label %20
20: ; preds = %18, %7
br label %21
21: ; preds = %20
%22 = load i32, i32* %3
%23 = add nsw i32 %22, 1
store i32 %23, i32* %3
br label %4
24: ; preds = %4
ret void
}

LLVM IR (-O2):
@.str = [5 x i8] c"%02x\00"
define void @print128(i8* nocapture %0) {
br label %2
2: ; preds = %1, %12
%3 = phi i64 [ 0, %1 ], [ %13, %12 ]
%4 = getelementptr inbounds i8, i8* %0, i64 %3
%5 = load i8, i8* %4
%6 = zext i8 %5 to i32
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %6)
%8 = and i64 %3, 3
%9 = icmp eq i64 %8, 3
br i1 %9, label %10, label %12
10: ; preds = %2
%11 = tail call i32 @putchar(i32 32)
br label %12
12: ; preds = %2, %10
%13 = add nuw nsw i64 %3, 1
%14 = icmp eq i64 %13, 16
br i1 %14, label %15, label %2
15: ; preds = %12
ret void
}