#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 PrintPacketInHex(unsigned char *packet, int len) {
  unsigned char *p = packet;
  printf("\n\n---------Packet---Starts-------\n\n");
  while (len--) {
    printf("%.2x", *p);
    p++;
  }
  printf("\n\n---------Packet---Ends---------\n\n");
}


x86 assembly (clang, -O0):
<PrintPacketInHex>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
mov    -0x8(%rbp),%rax
mov    %rax,-0x18(%rbp)
lea    0xed2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
mov    %eax,%ecx
add    $0xffffffff,%ecx
mov    %ecx,-0xc(%rbp)
cmp    $0x0,%eax
je     116f <PrintPacketInHex+0x5f>
mov    -0x18(%rbp),%rax
movzbl (%rax),%esi
lea    0xecd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x18(%rbp),%rax
add    $0x1,%rax
mov    %rax,-0x18(%rbp)
jmp    1135 <PrintPacketInHex+0x25>
lea    0xeb3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<PrintPacketInHex>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
mov    %esi,%ebp
mov    %rdi,%r15
lea    0xed2(%rip),%rdi
call   1030 <puts@plt>
test   %ebp,%ebp
je     1167 <PrintPacketInHex+0x47>
mov    %ebp,%ebp
lea    0xebb(%rip),%r14
xor    %ebx,%ebx
nopw   0x0(%rax,%rax,1)
movzbl (%r15,%rbx,1),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x1,%rbx
cmp    %ebx,%ebp
jne    1150 <PrintPacketInHex+0x30>
lea    0xeba(%rip),%rdi
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [36 x i8] c"\0A\0A---------Packet---Starts-------\0A\0A\00"
@.str.1 = [5 x i8] c"%.2x\00"
@.str.2 = [36 x i8] c"\0A\0A---------Packet---Ends---------\0A\0A\00"
define void @PrintPacketInHex(i8* %0, i32 %1) {
%3 = alloca i8*
%4 = alloca i32
%5 = alloca i8*
store i8* %0, i8** %3
store i32 %1, i32* %4
%6 = load i8*, i8** %3
store i8* %6, i8** %5
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str, i64 0, i64 0))
br label %8
8: ; preds = %12, %2
%9 = load i32, i32* %4
%10 = add nsw i32 %9, -1
store i32 %10, i32* %4
%11 = icmp ne i32 %9, 0
br i1 %11, label %12, label %19
12: ; preds = %8
%13 = load i8*, i8** %5
%14 = load i8, i8* %13
%15 = zext i8 %14 to i32
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %15)
%17 = load i8*, i8** %5
%18 = getelementptr inbounds i8, i8* %17, i32 1
store i8* %18, i8** %5
br label %8
19: ; preds = %8
%20 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.2, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str.1 = [5 x i8] c"%.2x\00"
@str = [35 x i8] c"\0A\0A---------Packet---Starts-------\0A\00"
@str.3 = [35 x i8] c"\0A\0A---------Packet---Ends---------\0A\00"
define void @PrintPacketInHex(i8* nocapture %0, i32 %1) {
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @str, i64 0, i64 0))
%4 = icmp eq i32 %1, 0
br i1 %4, label %14, label %5
5: ; preds = %2, %5
%6 = phi i8* [ %12, %5 ], [ %0, %2 ]
%7 = phi i32 [ %8, %5 ], [ %1, %2 ]
%8 = add nsw i32 %7, -1
%9 = load i8, i8* %6
%10 = zext i8 %9 to i32
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %10)
%12 = getelementptr inbounds i8, i8* %6, i64 1
%13 = icmp eq i32 %8, 0
br i1 %13, label %14, label %5
14: ; preds = %5, %2
%15 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @str.3, i64 0, i64 0))
ret void
}