#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 */
typedef int uint8_t;

/* Variables and functions */
int /*<<< orphan*/ printf(char *, ...);
void print_key(const uint8_t key[], const unsigned int size) {
  unsigned int i;
  for (i = 0; i < size; ++i) {
    if (i != 0) {
      printf(":");
    }
    printf("%x", key[i]);
  }
}


x86 assembly (clang, -O0):
<print_key>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jae    1170 <print_key+0x60>
cmpl   $0x0,-0x10(%rbp)
je     114a <print_key+0x3a>
lea    0xebd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%rax
mov    -0x10(%rbp),%ecx
mov    (%rax,%rcx,4),%esi
lea    0xea7(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1126 <print_key+0x16>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<print_key>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
test   %esi,%esi
je     1181 <print_key+0x61>
mov    %esi,%ebp
mov    %rdi,%r15
mov    (%rdi),%esi
lea    0xec7(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
cmp    $0x1,%ebp
je     1181 <print_key+0x61>
mov    %ebp,%ebp
mov    $0x1,%ebx
lea    0xead(%rip),%r14
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
mov    $0x3a,%edi
call   1030 <putchar@plt>
mov    (%r15,%rbx,4),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%rbp
jne    1160 <print_key+0x40>
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [2 x i8] c":\00"
@.str.1 = [3 x i8] c"%x\00"
define void @print_key(i32* %0, i32 %1) {
%3 = alloca i32*
%4 = alloca i32
%5 = alloca i32
store i32* %0, i32** %3
store i32 %1, i32* %4
store i32 0, i32* %5
br label %6
6: ; preds = %22, %2
%7 = load i32, i32* %5
%8 = load i32, i32* %4
%9 = icmp ult i32 %7, %8
br i1 %9, label %10, label %25
10: ; preds = %6
%11 = load i32, i32* %5
%12 = icmp ne i32 %11, 0
br i1 %12, label %13, label %15
13: ; preds = %10
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
br label %15
15: ; preds = %13, %10
%16 = load i32*, i32** %3
%17 = load i32, i32* %5
%18 = zext i32 %17 to i64
%19 = getelementptr inbounds i32, i32* %16, i64 %18
%20 = load i32, i32* %19
%21 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %20)
br label %22
22: ; preds = %15
%23 = load i32, i32* %5
%24 = add i32 %23, 1
store i32 %24, i32* %5
br label %6
25: ; preds = %6
ret void
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%x\00"
define void @print_key(i32* nocapture %0, i32 %1) {
%3 = icmp eq i32 %1, 0
br i1 %3, label %17, label %4
4: ; preds = %2
%5 = zext i32 %1 to i64
%6 = load i32, i32* %0
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %6)
%8 = icmp eq i32 %1, 1
br i1 %8, label %17, label %9
9: ; preds = %4, %9
%10 = phi i64 [ %15, %9 ], [ 1, %4 ]
%11 = tail call i32 @putchar(i32 58)
%12 = getelementptr inbounds i32, i32* %0, i64 %10
%13 = load i32, i32* %12
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %13)
%15 = add nuw nsw i64 %10, 1
%16 = icmp eq i64 %15, %5
br i1 %16, label %17, label %9
17: ; preds = %9, %4, %2
ret void
}