#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 /*<<< orphan*/ FILE;

/* Variables and functions */
int /*<<< orphan*/ fprintf(int /*<<< orphan*/ *, char *, ...);
void print_data_message(const unsigned char *packet, int len, FILE *Fp) {
  int i;
  for (i = 0; i < len; i++) {
    fprintf(Fp, "%02x ", packet[i]);
  }
  fprintf(Fp, "\n");
}


x86 assembly (clang, -O0):
<print_data_message>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
mov    %rdx,-0x18(%rbp)
movl   $0x0,-0x1c(%rbp)
mov    -0x1c(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1162 <print_data_message+0x52>
mov    -0x18(%rbp),%rdi
mov    -0x8(%rbp),%rax
movslq -0x1c(%rbp),%rcx
movzbl (%rax,%rcx,1),%edx
lea    0xeb3(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    -0x1c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x1c(%rbp)
jmp    112a <print_data_message+0x1a>
mov    -0x18(%rbp),%rdi
lea    0xe99(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<print_data_message>:
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
mov    %rdx,%r14
test   %esi,%esi
jle    115b <print_data_message+0x3b>
mov    %rdi,%r12
mov    %esi,%r13d
lea    0xec3(%rip),%r15
xor    %ebx,%ebx
nop
movzbl (%r12,%rbx,1),%edx
mov    %r14,%rdi
mov    %r15,%rsi
xor    %eax,%eax
call   1040 <fprintf@plt>
add    $0x1,%rbx
cmp    %rbx,%r13
jne    1140 <print_data_message+0x20>
mov    $0xa,%edi
mov    %r14,%rsi
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
jmp    1030 <fputc@plt>

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

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