#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__ strcmp(char const *, char *);
int mode_str_to_int(const char *mode) {
  if (strcmp(mode, "a") == 0) {
    return 1;
  }
  if (strcmp(mode, "w") == 0) {
    return 2;
  }
  if (strcmp(mode, "r") == 0) {
    return 4;
  }
  if (strcmp(mode, "ar") == 0) {
    return 4 | 1;
  }
  if (strcmp(mode, "ra") == 0) {
    return 4 | 1;
  }
  if (strcmp(mode, "rw") == 0) {
    return 4 | 2;
  }
  if (strcmp(mode, "wr") == 0) {
    return 4 | 2;
  }
  if (strcmp(mode, "aw") == 0) {
    return 1 | 2;
  }
  if (strcmp(mode, "wa") == 0) {
    return 2 | 1;
  }
  if (strcmp(mode, "rwa") == 0) {
    return 4 | 2 | 1;
  }
  if (strcmp(mode, "raw") == 0) {
    return 4 | 1 | 2;
  }
  if (strcmp(mode, "wra") == 0) {
    return 2 | 4 | 1;
  }
  if (strcmp(mode, "war") == 0) {
    return 2 | 1 | 4;
  }
  if (strcmp(mode, "arw") == 0) {
    return 1 | 4 | 2;
  }
  if (strcmp(mode, "awr") == 0) {
    return 1 | 2 | 4;
  }
  return 0;
}


x86 assembly (clang, -O0):
<mode_str_to_int>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x10(%rbp)
mov    -0x10(%rbp),%rdi
lea    0xee3(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1142 <mode_str_to_int+0x32>
movl   $0x1,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xeb9(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1168 <mode_str_to_int+0x58>
movl   $0x2,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xe9b(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    118e <mode_str_to_int+0x7e>
movl   $0x4,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xe74(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    11b4 <mode_str_to_int+0xa4>
movl   $0x5,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xe4a(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    11da <mode_str_to_int+0xca>
movl   $0x5,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xe2c(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1200 <mode_str_to_int+0xf0>
movl   $0x6,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xe0a(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1226 <mode_str_to_int+0x116>
movl   $0x6,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xdd4(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    124c <mode_str_to_int+0x13c>
movl   $0x3,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xdaa(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1272 <mode_str_to_int+0x162>
movl   $0x3,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xd83(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1298 <mode_str_to_int+0x188>
movl   $0x7,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xd61(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    12be <mode_str_to_int+0x1ae>
movl   $0x7,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xd3f(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    12e4 <mode_str_to_int+0x1d4>
movl   $0x7,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xd1d(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    130a <mode_str_to_int+0x1fa>
movl   $0x7,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xcfb(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1330 <mode_str_to_int+0x220>
movl   $0x7,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
mov    -0x10(%rbp),%rdi
lea    0xcd9(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1356 <mode_str_to_int+0x246>
movl   $0x7,-0x4(%rbp)
jmp    135d <mode_str_to_int+0x24d>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<mode_str_to_int>:
push   %rbp
push   %rbx
push   %rax
mov    %rdi,%rbx
lea    0xeed(%rip),%rsi
call   1030 <strcmp@plt>
test   %rax,%rax
je     1285 <mode_str_to_int+0x175>
lea    0xed4(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     128c <mode_str_to_int+0x17c>
lea    0xec4(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     1293 <mode_str_to_int+0x183>
lea    0xeab(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
mov    $0x5,%ebp
test   %rax,%rax
je     1298 <mode_str_to_int+0x188>
lea    0xe8a(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     1298 <mode_str_to_int+0x188>
lea    0xe7a(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
mov    $0x6,%ebp
test   %rax,%rax
je     1298 <mode_str_to_int+0x188>
lea    0xe61(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     1298 <mode_str_to_int+0x188>
lea    0xe39(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
mov    $0x3,%ebp
test   %rax,%rax
je     1298 <mode_str_to_int+0x188>
lea    0xe18(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     1298 <mode_str_to_int+0x188>
lea    0xdff(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
mov    $0x7,%ebp
test   %rax,%rax
je     1298 <mode_str_to_int+0x188>
lea    0xde6(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     1298 <mode_str_to_int+0x188>
lea    0xdd6(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     1298 <mode_str_to_int+0x188>
lea    0xdc6(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     1298 <mode_str_to_int+0x188>
lea    0xdb6(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     1298 <mode_str_to_int+0x188>
lea    0xda6(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
xor    %ecx,%ecx
test   %rax,%rax
mov    $0x7,%ebp
cmovne %ecx,%ebp
jmp    1298 <mode_str_to_int+0x188>
mov    $0x1,%ebp
jmp    1298 <mode_str_to_int+0x188>
mov    $0x2,%ebp
jmp    1298 <mode_str_to_int+0x188>
mov    $0x4,%ebp
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [2 x i8] c"a\00"
@.str.1 = [2 x i8] c"w\00"
@.str.2 = [2 x i8] c"r\00"
@.str.3 = [3 x i8] c"ar\00"
@.str.4 = [3 x i8] c"ra\00"
@.str.5 = [3 x i8] c"rw\00"
@.str.6 = [3 x i8] c"wr\00"
@.str.7 = [3 x i8] c"aw\00"
@.str.8 = [3 x i8] c"wa\00"
@.str.9 = [4 x i8] c"rwa\00"
@.str.10 = [4 x i8] c"raw\00"
@.str.11 = [4 x i8] c"wra\00"
@.str.12 = [4 x i8] c"war\00"
@.str.13 = [4 x i8] c"arw\00"
@.str.14 = [4 x i8] c"awr\00"
define i32 @mode_str_to_int(i8* %0) {
%2 = alloca i32
%3 = alloca i8*
store i8* %0, i8** %3
%4 = load i8*, i8** %3
%5 = call i64 @strcmp(i8* %4, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%6 = icmp eq i64 %5, 0
br i1 %6, label %7, label %8
7: ; preds = %1
store i32 1, i32* %2
br label %79
8: ; preds = %1
%9 = load i8*, i8** %3
%10 = call i64 @strcmp(i8* %9, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%11 = icmp eq i64 %10, 0
br i1 %11, label %12, label %13
12: ; preds = %8
store i32 2, i32* %2
br label %79
13: ; preds = %8
%14 = load i8*, i8** %3
%15 = call i64 @strcmp(i8* %14, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%16 = icmp eq i64 %15, 0
br i1 %16, label %17, label %18
17: ; preds = %13
store i32 4, i32* %2
br label %79
18: ; preds = %13
%19 = load i8*, i8** %3
%20 = call i64 @strcmp(i8* %19, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0))
%21 = icmp eq i64 %20, 0
br i1 %21, label %22, label %23
22: ; preds = %18
store i32 5, i32* %2
br label %79
23: ; preds = %18
%24 = load i8*, i8** %3
%25 = call i64 @strcmp(i8* %24, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0))
%26 = icmp eq i64 %25, 0
br i1 %26, label %27, label %28
27: ; preds = %23
store i32 5, i32* %2
br label %79
28: ; preds = %23
%29 = load i8*, i8** %3
%30 = call i64 @strcmp(i8* %29, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.5, i64 0, i64 0))
%31 = icmp eq i64 %30, 0
br i1 %31, label %32, label %33
32: ; preds = %28
store i32 6, i32* %2
br label %79
33: ; preds = %28
%34 = load i8*, i8** %3
%35 = call i64 @strcmp(i8* %34, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.6, i64 0, i64 0))
%36 = icmp eq i64 %35, 0
br i1 %36, label %37, label %38
37: ; preds = %33
store i32 6, i32* %2
br label %79
38: ; preds = %33
%39 = load i8*, i8** %3
%40 = call i64 @strcmp(i8* %39, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.7, i64 0, i64 0))
%41 = icmp eq i64 %40, 0
br i1 %41, label %42, label %43
42: ; preds = %38
store i32 3, i32* %2
br label %79
43: ; preds = %38
%44 = load i8*, i8** %3
%45 = call i64 @strcmp(i8* %44, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.8, i64 0, i64 0))
%46 = icmp eq i64 %45, 0
br i1 %46, label %47, label %48
47: ; preds = %43
store i32 3, i32* %2
br label %79
48: ; preds = %43
%49 = load i8*, i8** %3
%50 = call i64 @strcmp(i8* %49, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.9, i64 0, i64 0))
%51 = icmp eq i64 %50, 0
br i1 %51, label %52, label %53
52: ; preds = %48
store i32 7, i32* %2
br label %79
53: ; preds = %48
%54 = load i8*, i8** %3
%55 = call i64 @strcmp(i8* %54, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.10, i64 0, i64 0))
%56 = icmp eq i64 %55, 0
br i1 %56, label %57, label %58
57: ; preds = %53
store i32 7, i32* %2
br label %79
58: ; preds = %53
%59 = load i8*, i8** %3
%60 = call i64 @strcmp(i8* %59, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.11, i64 0, i64 0))
%61 = icmp eq i64 %60, 0
br i1 %61, label %62, label %63
62: ; preds = %58
store i32 7, i32* %2
br label %79
63: ; preds = %58
%64 = load i8*, i8** %3
%65 = call i64 @strcmp(i8* %64, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.12, i64 0, i64 0))
%66 = icmp eq i64 %65, 0
br i1 %66, label %67, label %68
67: ; preds = %63
store i32 7, i32* %2
br label %79
68: ; preds = %63
%69 = load i8*, i8** %3
%70 = call i64 @strcmp(i8* %69, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.13, i64 0, i64 0))
%71 = icmp eq i64 %70, 0
br i1 %71, label %72, label %73
72: ; preds = %68
store i32 7, i32* %2
br label %79
73: ; preds = %68
%74 = load i8*, i8** %3
%75 = call i64 @strcmp(i8* %74, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.14, i64 0, i64 0))
%76 = icmp eq i64 %75, 0
br i1 %76, label %77, label %78
77: ; preds = %73
store i32 7, i32* %2
br label %79
78: ; preds = %73
store i32 0, i32* %2
br label %79
79: ; preds = %78, %77, %72, %67, %62, %57, %52, %47, %42, %37, %32, %27, %22, %17, %12, %7
%80 = load i32, i32* %2
ret i32 %80
}

LLVM IR (-O2):
@.str = [2 x i8] c"a\00"
@.str.1 = [2 x i8] c"w\00"
@.str.2 = [2 x i8] c"r\00"
@.str.3 = [3 x i8] c"ar\00"
@.str.4 = [3 x i8] c"ra\00"
@.str.5 = [3 x i8] c"rw\00"
@.str.6 = [3 x i8] c"wr\00"
@.str.7 = [3 x i8] c"aw\00"
@.str.8 = [3 x i8] c"wa\00"
@.str.9 = [4 x i8] c"rwa\00"
@.str.10 = [4 x i8] c"raw\00"
@.str.11 = [4 x i8] c"wra\00"
@.str.12 = [4 x i8] c"war\00"
@.str.13 = [4 x i8] c"arw\00"
@.str.14 = [4 x i8] c"awr\00"
define i32 @mode_str_to_int(i8* %0) {
%2 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i64 %2, 0
br i1 %3, label %47, label %4
4: ; preds = %1
%5 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%6 = icmp eq i64 %5, 0
br i1 %6, label %47, label %7
7: ; preds = %4
%8 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%9 = icmp eq i64 %8, 0
br i1 %9, label %47, label %10
10: ; preds = %7
%11 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0))
%12 = icmp eq i64 %11, 0
br i1 %12, label %47, label %13
13: ; preds = %10
%14 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0))
%15 = icmp eq i64 %14, 0
br i1 %15, label %47, label %16
16: ; preds = %13
%17 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.5, i64 0, i64 0))
%18 = icmp eq i64 %17, 0
br i1 %18, label %47, label %19
19: ; preds = %16
%20 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.6, i64 0, i64 0))
%21 = icmp eq i64 %20, 0
br i1 %21, label %47, label %22
22: ; preds = %19
%23 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.7, i64 0, i64 0))
%24 = icmp eq i64 %23, 0
br i1 %24, label %47, label %25
25: ; preds = %22
%26 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.8, i64 0, i64 0))
%27 = icmp eq i64 %26, 0
br i1 %27, label %47, label %28
28: ; preds = %25
%29 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.9, i64 0, i64 0))
%30 = icmp eq i64 %29, 0
br i1 %30, label %47, label %31
31: ; preds = %28
%32 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.10, i64 0, i64 0))
%33 = icmp eq i64 %32, 0
br i1 %33, label %47, label %34
34: ; preds = %31
%35 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.11, i64 0, i64 0))
%36 = icmp eq i64 %35, 0
br i1 %36, label %47, label %37
37: ; preds = %34
%38 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.12, i64 0, i64 0))
%39 = icmp eq i64 %38, 0
br i1 %39, label %47, label %40
40: ; preds = %37
%41 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.13, i64 0, i64 0))
%42 = icmp eq i64 %41, 0
br i1 %42, label %47, label %43
43: ; preds = %40
%44 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.14, i64 0, i64 0))
%45 = icmp eq i64 %44, 0
%46 = select i1 %45, i32 7, i32 0
br label %47
47: ; preds = %43, %40, %37, %34, %31, %28, %25, %22, %19, %16, %13, %10, %7, %4, %1
%48 = phi i32 [ 1, %1 ], [ 2, %4 ], [ 4, %7 ], [ 5, %10 ], [ 5, %13 ], [ 6, %16 ], [ 6, %19 ], [ 3, %22 ], [ 3, %25 ], [ 7, %28 ], [ 7, %31 ], [ 7, %34 ], [ 7, %37 ], [ 7, %40 ], [ %46, %43 ]
ret i32 %48
}