#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 iw_print_ie_unknown(unsigned char *iebuf, int buflen) {
  int ielen = iebuf[1] + 2;
  int i;
  if (ielen > buflen)
    ielen = buflen;
  printf("Unknown: ");
  for (i = 0; i < ielen; i++)
    printf("%02X", iebuf[i]);
  printf("\n");
}


x86 assembly (clang, -O0):
<iw_print_ie_unknown>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
mov    -0x8(%rbp),%rax
movzbl 0x1(%rax),%eax
add    $0x2,%eax
mov    %eax,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jle    113f <iw_print_ie_unknown+0x2f>
mov    -0xc(%rbp),%eax
mov    %eax,-0x10(%rbp)
lea    0xeba(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x10(%rbp),%eax
jge    1188 <iw_print_ie_unknown+0x78>
mov    -0x8(%rbp),%rax
movslq -0x14(%rbp),%rcx
movzbl (%rax,%rcx,1),%esi
lea    0xe97(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1154 <iw_print_ie_unknown+0x44>
lea    0xe80(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<iw_print_ie_unknown>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
mov    %esi,%r14d
mov    %rdi,%r15
movzbl 0x1(%rdi),%ebp
lea    0xec8(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
test   %r14d,%r14d
jle    1178 <iw_print_ie_unknown+0x58>
add    $0x2,%ebp
cmp    %r14d,%ebp
cmova  %r14d,%ebp
lea    0xeb5(%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    %rbx,%rbp
jne    1160 <iw_print_ie_unknown+0x40>
mov    $0xa,%edi
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
jmp    1030 <putchar@plt>

LLVM IR (-O0):
@.str = [10 x i8] c"Unknown: \00"
@.str.1 = [5 x i8] c"%02X\00"
@.str.2 = [2 x i8] c"\0A\00"
define void @iw_print_ie_unknown(i8* %0, i32 %1) {
%3 = alloca i8*
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
store i8* %0, i8** %3
store i32 %1, i32* %4
%7 = load i8*, i8** %3
%8 = getelementptr inbounds i8, i8* %7, i64 1
%9 = load i8, i8* %8
%10 = zext i8 %9 to i32
%11 = add nsw i32 %10, 2
store i32 %11, i32* %5
%12 = load i32, i32* %5
%13 = load i32, i32* %4
%14 = icmp sgt i32 %12, %13
br i1 %14, label %15, label %17
15: ; preds = %2
%16 = load i32, i32* %4
store i32 %16, i32* %5
br label %17
17: ; preds = %15, %2
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %6
br label %19
19: ; preds = %31, %17
%20 = load i32, i32* %6
%21 = load i32, i32* %5
%22 = icmp slt i32 %20, %21
br i1 %22, label %23, label %34
23: ; preds = %19
%24 = load i8*, i8** %3
%25 = load i32, i32* %6
%26 = sext i32 %25 to i64
%27 = getelementptr inbounds i8, i8* %24, i64 %26
%28 = load i8, i8* %27
%29 = zext i8 %28 to i32
%30 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %29)
br label %31
31: ; preds = %23
%32 = load i32, i32* %6
%33 = add nsw i32 %32, 1
store i32 %33, i32* %6
br label %19
34: ; preds = %19
%35 = 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 = [10 x i8] c"Unknown: \00"
@.str.1 = [5 x i8] c"%02X\00"
define void @iw_print_ie_unknown(i8* nocapture %0, i32 %1) {
%3 = getelementptr inbounds i8, i8* %0, i64 1
%4 = load i8, i8* %3
%5 = zext i8 %4 to i32
%6 = add nuw nsw i32 %5, 2
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0))
%8 = icmp sgt i32 %1, 0
br i1 %8, label %9, label %21
9: ; preds = %2
%10 = icmp ugt i32 %6, %1
%11 = select i1 %10, i32 %1, i32 %6
%12 = zext i32 %11 to i64
br label %13
13: ; preds = %9, %13
%14 = phi i64 [ 0, %9 ], [ %19, %13 ]
%15 = getelementptr inbounds i8, i8* %0, i64 %14
%16 = load i8, i8* %15
%17 = zext i8 %16 to i32
%18 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %17)
%19 = add nuw nsw i64 %14, 1
%20 = icmp eq i64 %19, %12
br i1 %20, label %21, label %13
21: ; preds = %13, %2
%22 = tail call i32 @putchar(i32 10)
ret void
}