#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 */
scalar_t__ S_ISBLK(int);
scalar_t__ S_ISCHR(int);
scalar_t__ S_ISDIR(int);
scalar_t__ S_ISFIFO(int);
scalar_t__ S_ISLNK(int);
scalar_t__ S_ISREG(int);
scalar_t__ S_ISSOCK(int);
const char *dbg_st_mode_to_string(int st_mode) {
  if (S_ISBLK(st_mode))
    return "block special";
  if (S_ISCHR(st_mode))
    return "character special";
  if (S_ISFIFO(st_mode))
    return "FIFO special";
  if (S_ISREG(st_mode))
    return "regular file";
  if (S_ISDIR(st_mode))
    return "directory";
  if (S_ISLNK(st_mode))
    return "symbolic link (broken)";
  if (S_ISSOCK(st_mode))
    return "socket";
  return "<unknown st_mode value>";
}


x86 assembly (clang, -O0):
<dbg_st_mode_to_string>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0xc(%rbp)
mov    -0xc(%rbp),%edi
call   1090 <S_ISBLK@plt>
cmp    $0x0,%rax
je     119d <dbg_st_mode_to_string+0x2d>
lea    0xe6c(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1274 <dbg_st_mode_to_string+0x104>
mov    -0xc(%rbp),%edi
call   1080 <S_ISCHR@plt>
cmp    $0x0,%rax
je     11bf <dbg_st_mode_to_string+0x4f>
lea    0xe58(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1274 <dbg_st_mode_to_string+0x104>
mov    -0xc(%rbp),%edi
call   1040 <S_ISFIFO@plt>
cmp    $0x0,%rax
je     11e1 <dbg_st_mode_to_string+0x71>
lea    0xe48(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1274 <dbg_st_mode_to_string+0x104>
mov    -0xc(%rbp),%edi
call   1070 <S_ISREG@plt>
cmp    $0x0,%rax
je     1203 <dbg_st_mode_to_string+0x93>
lea    0xe33(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1274 <dbg_st_mode_to_string+0x104>
mov    -0xc(%rbp),%edi
call   1060 <S_ISDIR@plt>
cmp    $0x0,%rax
je     1225 <dbg_st_mode_to_string+0xb5>
lea    0xe1e(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1274 <dbg_st_mode_to_string+0x104>
mov    -0xc(%rbp),%edi
call   1030 <S_ISLNK@plt>
cmp    $0x0,%rax
je     1247 <dbg_st_mode_to_string+0xd7>
lea    0xe06(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1274 <dbg_st_mode_to_string+0x104>
mov    -0xc(%rbp),%edi
call   1050 <S_ISSOCK@plt>
cmp    $0x0,%rax
je     1269 <dbg_st_mode_to_string+0xf9>
lea    0xdfb(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1274 <dbg_st_mode_to_string+0x104>
lea    0xdf2(%rip),%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<dbg_st_mode_to_string>:
push   %rbx
mov    %edi,%ebx
call   1090 <S_ISBLK@plt>
test   %rax,%rax
je     1186 <dbg_st_mode_to_string+0x16>
lea    0xe7c(%rip),%rax
pop    %rbx
ret
mov    %ebx,%edi
call   1080 <S_ISCHR@plt>
test   %rax,%rax
je     119b <dbg_st_mode_to_string+0x2b>
lea    0xe75(%rip),%rax
pop    %rbx
ret
mov    %ebx,%edi
call   1040 <S_ISFIFO@plt>
test   %rax,%rax
je     11b0 <dbg_st_mode_to_string+0x40>
lea    0xe72(%rip),%rax
pop    %rbx
ret
mov    %ebx,%edi
call   1070 <S_ISREG@plt>
test   %rax,%rax
je     11c5 <dbg_st_mode_to_string+0x55>
lea    0xe6a(%rip),%rax
pop    %rbx
ret
mov    %ebx,%edi
call   1060 <S_ISDIR@plt>
test   %rax,%rax
je     11da <dbg_st_mode_to_string+0x6a>
lea    0xe62(%rip),%rax
pop    %rbx
ret
mov    %ebx,%edi
call   1030 <S_ISLNK@plt>
test   %rax,%rax
je     11ef <dbg_st_mode_to_string+0x7f>
lea    0xe57(%rip),%rax
pop    %rbx
ret
mov    %ebx,%edi
call   1050 <S_ISSOCK@plt>
test   %rax,%rax
lea    0xe62(%rip),%rcx
lea    0xe54(%rip),%rax
cmove  %rcx,%rax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [14 x i8] c"block special\00"
@.str.1 = [18 x i8] c"character special\00"
@.str.2 = [13 x i8] c"FIFO special\00"
@.str.3 = [13 x i8] c"regular file\00"
@.str.4 = [10 x i8] c"directory\00"
@.str.5 = [23 x i8] c"symbolic link (broken)\00"
@.str.6 = [7 x i8] c"socket\00"
@.str.7 = [24 x i8] c"<unknown st_mode value>\00"
define i8* @dbg_st_mode_to_string(i32 %0) {
%2 = alloca i8*
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
%5 = call i64 @S_ISBLK(i32 %4)
%6 = icmp ne i64 %5, 0
br i1 %6, label %7, label %8
7: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i8** %2
br label %39
8: ; preds = %1
%9 = load i32, i32* %3
%10 = call i64 @S_ISCHR(i32 %9)
%11 = icmp ne i64 %10, 0
br i1 %11, label %12, label %13
12: ; preds = %8
store i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.1, i64 0, i64 0), i8** %2
br label %39
13: ; preds = %8
%14 = load i32, i32* %3
%15 = call i64 @S_ISFIFO(i32 %14)
%16 = icmp ne i64 %15, 0
br i1 %16, label %17, label %18
17: ; preds = %13
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0), i8** %2
br label %39
18: ; preds = %13
%19 = load i32, i32* %3
%20 = call i64 @S_ISREG(i32 %19)
%21 = icmp ne i64 %20, 0
br i1 %21, label %22, label %23
22: ; preds = %18
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), i8** %2
br label %39
23: ; preds = %18
%24 = load i32, i32* %3
%25 = call i64 @S_ISDIR(i32 %24)
%26 = icmp ne i64 %25, 0
br i1 %26, label %27, label %28
27: ; preds = %23
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %39
28: ; preds = %23
%29 = load i32, i32* %3
%30 = call i64 @S_ISLNK(i32 %29)
%31 = icmp ne i64 %30, 0
br i1 %31, label %32, label %33
32: ; preds = %28
store i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.5, i64 0, i64 0), i8** %2
br label %39
33: ; preds = %28
%34 = load i32, i32* %3
%35 = call i64 @S_ISSOCK(i32 %34)
%36 = icmp ne i64 %35, 0
br i1 %36, label %37, label %38
37: ; preds = %33
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.6, i64 0, i64 0), i8** %2
br label %39
38: ; preds = %33
store i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.7, i64 0, i64 0), i8** %2
br label %39
39: ; preds = %38, %37, %32, %27, %22, %17, %12, %7
%40 = load i8*, i8** %2
ret i8* %40
}

LLVM IR (-O2):
@.str = [14 x i8] c"block special\00"
@.str.1 = [18 x i8] c"character special\00"
@.str.2 = [13 x i8] c"FIFO special\00"
@.str.3 = [13 x i8] c"regular file\00"
@.str.4 = [10 x i8] c"directory\00"
@.str.5 = [23 x i8] c"symbolic link (broken)\00"
@.str.6 = [7 x i8] c"socket\00"
@.str.7 = [24 x i8] c"<unknown st_mode value>\00"
define i8* @dbg_st_mode_to_string(i32 %0) {
%2 = tail call i64 @S_ISBLK(i32 %0)
%3 = icmp eq i64 %2, 0
br i1 %3, label %4, label %23
4: ; preds = %1
%5 = tail call i64 @S_ISCHR(i32 %0)
%6 = icmp eq i64 %5, 0
br i1 %6, label %7, label %23
7: ; preds = %4
%8 = tail call i64 @S_ISFIFO(i32 %0)
%9 = icmp eq i64 %8, 0
br i1 %9, label %10, label %23
10: ; preds = %7
%11 = tail call i64 @S_ISREG(i32 %0)
%12 = icmp eq i64 %11, 0
br i1 %12, label %13, label %23
13: ; preds = %10
%14 = tail call i64 @S_ISDIR(i32 %0)
%15 = icmp eq i64 %14, 0
br i1 %15, label %16, label %23
16: ; preds = %13
%17 = tail call i64 @S_ISLNK(i32 %0)
%18 = icmp eq i64 %17, 0
br i1 %18, label %19, label %23
19: ; preds = %16
%20 = tail call i64 @S_ISSOCK(i32 %0)
%21 = icmp eq i64 %20, 0
%22 = select i1 %21, i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.7, i64 0, i64 0), i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.6, i64 0, i64 0)
br label %23
23: ; preds = %19, %16, %13, %10, %7, %4, %1
%24 = phi i8* [ getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), %1 ], [ getelementptr inbounds ([18 x i8], [18 x i8]* @.str.1, i64 0, i64 0), %4 ], [ getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0), %7 ], [ getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), %10 ], [ getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0), %13 ], [ getelementptr inbounds ([23 x i8], [23 x i8]* @.str.5, i64 0, i64 0), %16 ], [ %22, %19 ]
ret i8* %24
}