#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*/ Parser_DisplayTagInfo(unsigned int, unsigned char);
int /*<<< orphan*/ Parser_TsPacketLog(unsigned int, char *, ...);
int x42_Tag_DescriptorParser(unsigned int type, unsigned char *buff) {
  unsigned int i = 0;
  if (NULL == buff) {
    return -1;
  }
  Parser_DisplayTagInfo(type, buff[0]);
  Parser_TsPacketLog(type, "Descriptor_length = 0x%x\n", buff[1]);
  if (0 != buff[1]) {
    Parser_TsPacketLog(type, "stuffing_byte: ");
    for (i = 0; i < buff[1]; i++) {
      Parser_TsPacketLog(type, "0x%02x", buff[i + 2]);
    }
    Parser_TsPacketLog(type, "\n");
  }
  Parser_TsPacketLog(type, "******END******\n");
  return buff[1];
}


x86 assembly (clang, -O0):
<x42_Tag_DescriptorParser>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
movl   $0x0,-0x14(%rbp)
xor    %eax,%eax
cmp    -0x10(%rbp),%rax
jne    114e <x42_Tag_DescriptorParser+0x2e>
movl   $0xffffffff,-0x4(%rbp)
jmp    120f <x42_Tag_DescriptorParser+0xef>
mov    -0x8(%rbp),%edi
mov    -0x10(%rbp),%rax
movzbl (%rax),%esi
call   1040 <Parser_DisplayTagInfo@plt>
mov    -0x8(%rbp),%edi
mov    -0x10(%rbp),%rax
movzbl 0x1(%rax),%edx
lea    0xe91(%rip),%rsi
mov    $0x0,%al
call   1030 <Parser_TsPacketLog@plt>
mov    -0x10(%rbp),%rax
movzbl 0x1(%rax),%ecx
xor    %eax,%eax
cmp    %ecx,%eax
je     11f3 <x42_Tag_DescriptorParser+0xd3>
mov    -0x8(%rbp),%edi
lea    0xe88(%rip),%rsi
mov    $0x0,%al
call   1030 <Parser_TsPacketLog@plt>
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
mov    -0x10(%rbp),%rcx
movzbl 0x1(%rcx),%ecx
cmp    %ecx,%eax
jae    11e2 <x42_Tag_DescriptorParser+0xc2>
mov    -0x8(%rbp),%edi
mov    -0x10(%rbp),%rax
mov    -0x14(%rbp),%ecx
add    $0x2,%ecx
mov    %ecx,%ecx
movzbl (%rax,%rcx,1),%edx
lea    0xe5d(%rip),%rsi
mov    $0x0,%al
call   1030 <Parser_TsPacketLog@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    11a0 <x42_Tag_DescriptorParser+0x80>
mov    -0x8(%rbp),%edi
lea    0xe54(%rip),%rsi
mov    $0x0,%al
call   1030 <Parser_TsPacketLog@plt>
mov    -0x8(%rbp),%edi
lea    0xe34(%rip),%rsi
mov    $0x0,%al
call   1030 <Parser_TsPacketLog@plt>
mov    -0x10(%rbp),%rax
movzbl 0x1(%rax),%eax
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<x42_Tag_DescriptorParser>:
test   %rsi,%rsi
je     11d0 <x42_Tag_DescriptorParser+0xb0>
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
mov    %rsi,%rbx
mov    %edi,%r15d
movzbl (%rsi),%esi
call   1040 <Parser_DisplayTagInfo@plt>
movzbl 0x1(%rbx),%edx
lea    0xeb7(%rip),%rsi
mov    %r15d,%edi
xor    %eax,%eax
call   1030 <Parser_TsPacketLog@plt>
cmpb   $0x0,0x1(%rbx)
je     11b0 <x42_Tag_DescriptorParser+0x90>
lea    0xeba(%rip),%rsi
mov    %r15d,%edi
xor    %eax,%eax
call   1030 <Parser_TsPacketLog@plt>
cmpb   $0x0,0x1(%rbx)
je     119f <x42_Tag_DescriptorParser+0x7f>
lea    0xeb3(%rip),%r14
xor    %ebp,%ebp
nopl   0x0(%rax)
movzbl 0x2(%rbx,%rbp,1),%edx
mov    %r15d,%edi
mov    %r14,%rsi
xor    %eax,%eax
call   1030 <Parser_TsPacketLog@plt>
add    $0x1,%rbp
movzbl 0x1(%rbx),%eax
cmp    %rax,%rbp
jb     1180 <x42_Tag_DescriptorParser+0x60>
lea    0xe9a(%rip),%rsi
mov    %r15d,%edi
xor    %eax,%eax
call   1030 <Parser_TsPacketLog@plt>
lea    0xe7a(%rip),%rsi
mov    %r15d,%edi
xor    %eax,%eax
call   1030 <Parser_TsPacketLog@plt>
movzbl 0x1(%rbx),%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret
mov    $0xffffffff,%eax
ret

LLVM IR (-O0):
@.str = [26 x i8] c"Descriptor_length = 0x%x\0A\00"
@.str.1 = [16 x i8] c"stuffing_byte: \00"
@.str.2 = [7 x i8] c"0x%02x\00"
@.str.3 = [2 x i8] c"\0A\00"
@.str.4 = [17 x i8] c"******END******\0A\00"
define i32 @x42_Tag_DescriptorParser(i32 %0, i8* %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8*
%6 = alloca i32
store i32 %0, i32* %4
store i8* %1, i8** %5
store i32 0, i32* %6
%7 = load i8*, i8** %5
%8 = icmp eq i8* null, %7
br i1 %8, label %9, label %10
9: ; preds = %2
store i32 -1, i32* %3
br label %60
10: ; preds = %2
%11 = load i32, i32* %4
%12 = load i8*, i8** %5
%13 = getelementptr inbounds i8, i8* %12, i64 0
%14 = load i8, i8* %13
%15 = call i32 @Parser_DisplayTagInfo(i32 %11, i8 zeroext %14)
%16 = load i32, i32* %4
%17 = load i8*, i8** %5
%18 = getelementptr inbounds i8, i8* %17, i64 1
%19 = load i8, i8* %18
%20 = zext i8 %19 to i32
%21 = call i32 (i32, i8*, ...) @Parser_TsPacketLog(i32 %16, i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0), i32 %20)
%22 = load i8*, i8** %5
%23 = getelementptr inbounds i8, i8* %22, i64 1
%24 = load i8, i8* %23
%25 = zext i8 %24 to i32
%26 = icmp ne i32 0, %25
br i1 %26, label %27, label %53
27: ; preds = %10
%28 = load i32, i32* %4
%29 = call i32 (i32, i8*, ...) @Parser_TsPacketLog(i32 %28, i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0))
store i32 0, i32* %6
br label %30
30: ; preds = %47, %27
%31 = load i32, i32* %6
%32 = load i8*, i8** %5
%33 = getelementptr inbounds i8, i8* %32, i64 1
%34 = load i8, i8* %33
%35 = zext i8 %34 to i32
%36 = icmp ult i32 %31, %35
br i1 %36, label %37, label %50
37: ; preds = %30
%38 = load i32, i32* %4
%39 = load i8*, i8** %5
%40 = load i32, i32* %6
%41 = add i32 %40, 2
%42 = zext i32 %41 to i64
%43 = getelementptr inbounds i8, i8* %39, i64 %42
%44 = load i8, i8* %43
%45 = zext i8 %44 to i32
%46 = call i32 (i32, i8*, ...) @Parser_TsPacketLog(i32 %38, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0), i32 %45)
br label %47
47: ; preds = %37
%48 = load i32, i32* %6
%49 = add i32 %48, 1
store i32 %49, i32* %6
br label %30
50: ; preds = %30
%51 = load i32, i32* %4
%52 = call i32 (i32, i8*, ...) @Parser_TsPacketLog(i32 %51, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
br label %53
53: ; preds = %50, %10
%54 = load i32, i32* %4
%55 = call i32 (i32, i8*, ...) @Parser_TsPacketLog(i32 %54, i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.4, i64 0, i64 0))
%56 = load i8*, i8** %5
%57 = getelementptr inbounds i8, i8* %56, i64 1
%58 = load i8, i8* %57
%59 = zext i8 %58 to i32
store i32 %59, i32* %3
br label %60
60: ; preds = %53, %9
%61 = load i32, i32* %3
ret i32 %61
}

LLVM IR (-O2):
@.str = [26 x i8] c"Descriptor_length = 0x%x\0A\00"
@.str.1 = [16 x i8] c"stuffing_byte: \00"
@.str.2 = [7 x i8] c"0x%02x\00"
@.str.3 = [2 x i8] c"\0A\00"
@.str.4 = [17 x i8] c"******END******\0A\00"
define i32 @x42_Tag_DescriptorParser(i32 %0, i8* %1) {
%3 = icmp eq i8* %1, null
br i1 %3, label %34, label %4
4: ; preds = %2
%5 = load i8, i8* %1
%6 = tail call i32 @Parser_DisplayTagInfo(i32 %0, i8 zeroext %5)
%7 = getelementptr inbounds i8, i8* %1, i64 1
%8 = load i8, i8* %7
%9 = zext i8 %8 to i32
%10 = tail call i32 (i32, i8*, ...) @Parser_TsPacketLog(i32 %0, i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0), i32 %9)
%11 = load i8, i8* %7
%12 = icmp eq i8 %11, 0
br i1 %12, label %30, label %13
13: ; preds = %4
%14 = tail call i32 (i32, i8*, ...) @Parser_TsPacketLog(i32 %0, i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0))
%15 = load i8, i8* %7
%16 = icmp eq i8 %15, 0
br i1 %16, label %28, label %17
17: ; preds = %13, %17
%18 = phi i64 [ %24, %17 ], [ 0, %13 ]
%19 = add nuw nsw i64 %18, 2
%20 = getelementptr inbounds i8, i8* %1, i64 %19
%21 = load i8, i8* %20
%22 = zext i8 %21 to i32
%23 = tail call i32 (i32, i8*, ...) @Parser_TsPacketLog(i32 %0, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0), i32 %22)
%24 = add nuw nsw i64 %18, 1
%25 = load i8, i8* %7
%26 = zext i8 %25 to i64
%27 = icmp ult i64 %24, %26
br i1 %27, label %17, label %28
28: ; preds = %17, %13
%29 = tail call i32 (i32, i8*, ...) @Parser_TsPacketLog(i32 %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
br label %30
30: ; preds = %28, %4
%31 = tail call i32 (i32, i8*, ...) @Parser_TsPacketLog(i32 %0, i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.4, i64 0, i64 0))
%32 = load i8, i8* %7
%33 = zext i8 %32 to i32
br label %34
34: ; preds = %2, %30
%35 = phi i32 [ %33, %30 ], [ -1, %2 ]
ret i32 %35
}