#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 print_received_message(const unsigned char *packet, int len) {
  int i;
  for (i = 0; i < len; i++) {
    if (i == 5 || i == 9)
      printf("| ");
    printf("%02x ", packet[i]);
  }
  printf("\n");
}


x86 assembly (clang, -O0):
<print_received_message>:
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
jge    117c <print_received_message+0x6c>
cmpl   $0x5,-0x10(%rbp)
je     1146 <print_received_message+0x36>
cmpl   $0x9,-0x10(%rbp)
jne    1154 <print_received_message+0x44>
lea    0xeb3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
movzbl (%rax,%rcx,1),%esi
lea    0xe9c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1126 <print_received_message+0x16>
lea    0xe86(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<print_received_message>:
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
test   %esi,%esi
jle    117e <print_received_message+0x5e>
mov    %rdi,%r12
mov    %esi,%r13d
lea    0xec6(%rip),%r14
lea    0xec2(%rip),%r15
xor    %ebx,%ebx
jmp    1172 <print_received_message+0x52>
cs nopw 0x0(%rax,%rax,1)
nop
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
movzbl (%r12,%rbx,1),%esi
mov    %r15,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%r13
je     117e <print_received_message+0x5e>
cmp    $0x9,%ebx
je     1150 <print_received_message+0x30>
cmp    $0x5,%ebx
je     1150 <print_received_message+0x30>
jmp    115a <print_received_message+0x3a>
mov    $0xa,%edi
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
jmp    1030 <putchar@plt>

LLVM IR (-O0):
@.str = [3 x i8] c"| \00"
@.str.1 = [6 x i8] c"%02x \00"
@.str.2 = [2 x i8] c"\0A\00"
define void @print_received_message(i8* %0, i32 %1) {
%3 = alloca i8*
%4 = alloca i32
%5 = alloca i32
store i8* %0, i8** %3
store i32 %1, i32* %4
store i32 0, i32* %5
br label %6
6: ; preds = %26, %2
%7 = load i32, i32* %5
%8 = load i32, i32* %4
%9 = icmp slt i32 %7, %8
br i1 %9, label %10, label %29
10: ; preds = %6
%11 = load i32, i32* %5
%12 = icmp eq i32 %11, 5
br i1 %12, label %16, label %13
13: ; preds = %10
%14 = load i32, i32* %5
%15 = icmp eq i32 %14, 9
br i1 %15, label %16, label %18
16: ; preds = %13, %10
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
br label %18
18: ; preds = %16, %13
%19 = load i8*, i8** %3
%20 = load i32, i32* %5
%21 = sext i32 %20 to i64
%22 = getelementptr inbounds i8, i8* %19, i64 %21
%23 = load i8, i8* %22
%24 = zext i8 %23 to i32
%25 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i32 %24)
br label %26
26: ; preds = %18
%27 = load i32, i32* %5
%28 = add nsw i32 %27, 1
store i32 %28, i32* %5
br label %6
29: ; preds = %6
%30 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [3 x i8] c"| \00"
@.str.1 = [6 x i8] c"%02x \00"
define void @print_received_message(i8* nocapture %0, i32 %1) {
%3 = icmp sgt i32 %1, 0
br i1 %3, label %4, label %18
4: ; preds = %2
%5 = zext i32 %1 to i64
br label %6
6: ; preds = %4, %11
%7 = phi i64 [ 0, %4 ], [ %16, %11 ]
%8 = trunc i64 %7 to i32
switch i32 %8, label %11 [
i32 9, label %9
i32 5, label %9
]
9: ; preds = %6, %6
%10 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
br label %11
11: ; preds = %6, %9
%12 = getelementptr inbounds i8, i8* %0, i64 %7
%13 = load i8, i8* %12
%14 = zext i8 %13 to i32
%15 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i32 %14)
%16 = add nuw nsw i64 %7, 1
%17 = icmp eq i64 %16, %5
br i1 %17, label %18, label %6
18: ; preds = %11, %2
%19 = tail call i32 @putchar(i32 10)
ret void
}