#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 *, ...);
int print_bytes(void *buff) {
  size_t i;
  printf("[");
  for (i = 0; i < 17; ++i)
    printf("%02X", ((unsigned char *)buff)[i]);
  printf("]\n");
  return 0;
}


x86 assembly (clang, -O0):
<print_bytes>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
lea    0xedd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movq   $0x0,-0x10(%rbp)
cmpq   $0x11,-0x10(%rbp)
jae    1168 <print_bytes+0x58>
mov    -0x8(%rbp),%rax
mov    -0x10(%rbp),%rcx
movzbl (%rax,%rcx,1),%esi
lea    0xeb2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%rax
add    $0x1,%rax
mov    %rax,-0x10(%rbp)
jmp    1132 <print_bytes+0x22>
lea    0xe98(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<print_bytes>:
push   %r14
push   %rbx
push   %rax
mov    %rdi,%rbx
mov    $0x5b,%edi
call   1030 <putchar@plt>
movzbl (%rbx),%esi
lea    0xeb5(%rip),%r14
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x1(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x2(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x3(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x4(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x5(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x6(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x7(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x8(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x9(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0xa(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0xb(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0xc(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0xd(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0xe(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0xf(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x10(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
lea    0xdc9(%rip),%rdi
call   1040 <puts@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [2 x i8] c"[\00"
@.str.1 = [5 x i8] c"%02X\00"
@.str.2 = [3 x i8] c"]\0A\00"
define i32 @print_bytes(i8* %0) {
%2 = alloca i8*
%3 = alloca i64
store i8* %0, i8** %2
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
store i64 0, i64* %3
br label %5
5: ; preds = %15, %1
%6 = load i64, i64* %3
%7 = icmp ult i64 %6, 17
br i1 %7, label %8, label %18
8: ; preds = %5
%9 = load i8*, i8** %2
%10 = load i64, i64* %3
%11 = getelementptr inbounds i8, i8* %9, 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.1, i64 0, i64 0), i32 %13)
br label %15
15: ; preds = %8
%16 = load i64, i64* %3
%17 = add i64 %16, 1
store i64 %17, i64* %3
br label %5
18: ; preds = %5
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [5 x i8] c"%02X\00"
@str = [2 x i8] c"]\00"
define i32 @print_bytes(i8* nocapture %0) {
%2 = tail call i32 @putchar(i32 91)
%3 = load i8, i8* %0
%4 = zext i8 %3 to i32
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %4)
%6 = getelementptr inbounds i8, i8* %0, i64 1
%7 = load i8, i8* %6
%8 = zext i8 %7 to i32
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %8)
%10 = getelementptr inbounds i8, i8* %0, i64 2
%11 = load i8, i8* %10
%12 = zext i8 %11 to i32
%13 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %12)
%14 = getelementptr inbounds i8, i8* %0, i64 3
%15 = load i8, i8* %14
%16 = zext i8 %15 to i32
%17 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %16)
%18 = getelementptr inbounds i8, i8* %0, i64 4
%19 = load i8, i8* %18
%20 = zext i8 %19 to i32
%21 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %20)
%22 = getelementptr inbounds i8, i8* %0, i64 5
%23 = load i8, i8* %22
%24 = zext i8 %23 to i32
%25 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %24)
%26 = getelementptr inbounds i8, i8* %0, i64 6
%27 = load i8, i8* %26
%28 = zext i8 %27 to i32
%29 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %28)
%30 = getelementptr inbounds i8, i8* %0, i64 7
%31 = load i8, i8* %30
%32 = zext i8 %31 to i32
%33 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %32)
%34 = getelementptr inbounds i8, i8* %0, i64 8
%35 = load i8, i8* %34
%36 = zext i8 %35 to i32
%37 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %36)
%38 = getelementptr inbounds i8, i8* %0, i64 9
%39 = load i8, i8* %38
%40 = zext i8 %39 to i32
%41 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %40)
%42 = getelementptr inbounds i8, i8* %0, i64 10
%43 = load i8, i8* %42
%44 = zext i8 %43 to i32
%45 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %44)
%46 = getelementptr inbounds i8, i8* %0, i64 11
%47 = load i8, i8* %46
%48 = zext i8 %47 to i32
%49 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %48)
%50 = getelementptr inbounds i8, i8* %0, i64 12
%51 = load i8, i8* %50
%52 = zext i8 %51 to i32
%53 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %52)
%54 = getelementptr inbounds i8, i8* %0, i64 13
%55 = load i8, i8* %54
%56 = zext i8 %55 to i32
%57 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %56)
%58 = getelementptr inbounds i8, i8* %0, i64 14
%59 = load i8, i8* %58
%60 = zext i8 %59 to i32
%61 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %60)
%62 = getelementptr inbounds i8, i8* %0, i64 15
%63 = load i8, i8* %62
%64 = zext i8 %63 to i32
%65 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %64)
%66 = getelementptr inbounds i8, i8* %0, i64 16
%67 = load i8, i8* %66
%68 = zext i8 %67 to i32
%69 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %68)
%70 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str, i64 0, i64 0))
ret i32 0
}