int get_scenario(scen)
char *scen;
{
  int ret;
  if (!strcmp(scen, "-tpc"))
    ret = 1;
  else if (!strcmp(scen, "-tpr"))
    ret = 2;
  else if (!strcmp(scen, "-tpf"))
    ret = 3;
  else if (!strcmp(scen, "-tgc"))
    ret = 4;
  else if (!strcmp(scen, "-tgr"))
    ret = 5;
  else if (!strcmp(scen, "-tgf"))
    ret = 6;
  else if (!strcmp(scen, "-mtc"))
    ret = 7;
  else if (!strcmp(scen, "-mtr"))
    ret = 8;
  else if (!strcmp(scen, "-mtf"))
    ret = 9;
  else if (!strcmp(scen, "-tgdc"))
    ret = 10;
  else if (!strcmp(scen, "-tgdr"))
    ret = 11;
  else
    ret = 0;
  return ret;
}


x86 assembly (clang, -O0):
<get_scenario>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rdi
lea    0xed9(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    1141 <get_scenario+0x31>
movl   $0x1,-0xc(%rbp)
jmp    12ec <get_scenario+0x1dc>
mov    -0x8(%rbp),%rdi
lea    0xeb9(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    1166 <get_scenario+0x56>
movl   $0x2,-0xc(%rbp)
jmp    12e7 <get_scenario+0x1d7>
mov    -0x8(%rbp),%rdi
lea    0xe99(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    118b <get_scenario+0x7b>
movl   $0x3,-0xc(%rbp)
jmp    12e2 <get_scenario+0x1d2>
mov    -0x8(%rbp),%rdi
lea    0xe79(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    11b0 <get_scenario+0xa0>
movl   $0x4,-0xc(%rbp)
jmp    12dd <get_scenario+0x1cd>
mov    -0x8(%rbp),%rdi
lea    0xe59(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    11d5 <get_scenario+0xc5>
movl   $0x5,-0xc(%rbp)
jmp    12d8 <get_scenario+0x1c8>
mov    -0x8(%rbp),%rdi
lea    0xe39(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    11fa <get_scenario+0xea>
movl   $0x6,-0xc(%rbp)
jmp    12d3 <get_scenario+0x1c3>
mov    -0x8(%rbp),%rdi
lea    0xe19(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    121f <get_scenario+0x10f>
movl   $0x7,-0xc(%rbp)
jmp    12ce <get_scenario+0x1be>
mov    -0x8(%rbp),%rdi
lea    0xdf9(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    1244 <get_scenario+0x134>
movl   $0x8,-0xc(%rbp)
jmp    12c9 <get_scenario+0x1b9>
mov    -0x8(%rbp),%rdi
lea    0xdd9(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    1269 <get_scenario+0x159>
movl   $0x9,-0xc(%rbp)
jmp    12c4 <get_scenario+0x1b4>
mov    -0x8(%rbp),%rdi
lea    0xdb9(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    128e <get_scenario+0x17e>
movl   $0xa,-0xc(%rbp)
jmp    12bf <get_scenario+0x1af>
mov    -0x8(%rbp),%rdi
lea    0xd9a(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    12b3 <get_scenario+0x1a3>
movl   $0xb,-0xc(%rbp)
jmp    12ba <get_scenario+0x1aa>
movl   $0x0,-0xc(%rbp)
jmp    12bf <get_scenario+0x1af>
jmp    12c4 <get_scenario+0x1b4>
jmp    12c9 <get_scenario+0x1b9>
jmp    12ce <get_scenario+0x1be>
jmp    12d3 <get_scenario+0x1c3>
jmp    12d8 <get_scenario+0x1c8>
jmp    12dd <get_scenario+0x1cd>
jmp    12e2 <get_scenario+0x1d2>
jmp    12e7 <get_scenario+0x1d7>
jmp    12ec <get_scenario+0x1dc>
mov    -0xc(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<get_scenario>:
push   %rbx
mov    %rdi,%rbx
lea    0xee5(%rip),%rsi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1208 <get_scenario+0xf8>
lea    0xed6(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     120f <get_scenario+0xff>
lea    0xec4(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1216 <get_scenario+0x106>
lea    0xeb2(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     121d <get_scenario+0x10d>
lea    0xea0(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1224 <get_scenario+0x114>
lea    0xe8e(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     122b <get_scenario+0x11b>
lea    0xe7c(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1232 <get_scenario+0x122>
lea    0xe6a(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1239 <get_scenario+0x129>
lea    0xe5c(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1240 <get_scenario+0x130>
lea    0xe4e(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1247 <get_scenario+0x137>
lea    0xe41(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
xor    %ecx,%ecx
test   %eax,%eax
mov    $0xb,%eax
cmovne %ecx,%eax
pop    %rbx
ret
mov    $0x1,%eax
pop    %rbx
ret
mov    $0x2,%eax
pop    %rbx
ret
mov    $0x3,%eax
pop    %rbx
ret
mov    $0x4,%eax
pop    %rbx
ret
mov    $0x5,%eax
pop    %rbx
ret
mov    $0x6,%eax
pop    %rbx
ret
mov    $0x7,%eax
pop    %rbx
ret
mov    $0x8,%eax
pop    %rbx
ret
mov    $0x9,%eax
pop    %rbx
ret
mov    $0xa,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [5 x i8] c"-tpc\00"
@.str.1 = [5 x i8] c"-tpr\00"
@.str.2 = [5 x i8] c"-tpf\00"
@.str.3 = [5 x i8] c"-tgc\00"
@.str.4 = [5 x i8] c"-tgr\00"
@.str.5 = [5 x i8] c"-tgf\00"
@.str.6 = [5 x i8] c"-mtc\00"
@.str.7 = [5 x i8] c"-mtr\00"
@.str.8 = [5 x i8] c"-mtf\00"
@.str.9 = [6 x i8] c"-tgdc\00"
@.str.10 = [6 x i8] c"-tgdr\00"
define i32 @get_scenario(i8* %0) {
%2 = alloca i8*
%3 = alloca i32
store i8* %0, i8** %2
%4 = load i8*, i8** %2
%5 = call i32 @strcmp(i8* %4, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0))
%6 = icmp ne i32 %5, 0
br i1 %6, label %8, label %7
7: ; preds = %1
store i32 1, i32* %3
br label %69
8: ; preds = %1
%9 = load i8*, i8** %2
%10 = call i32 @strcmp(i8* %9, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%11 = icmp ne i32 %10, 0
br i1 %11, label %13, label %12
12: ; preds = %8
store i32 2, i32* %3
br label %68
13: ; preds = %8
%14 = load i8*, i8** %2
%15 = call i32 @strcmp(i8* %14, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
%16 = icmp ne i32 %15, 0
br i1 %16, label %18, label %17
17: ; preds = %13
store i32 3, i32* %3
br label %67
18: ; preds = %13
%19 = load i8*, i8** %2
%20 = call i32 @strcmp(i8* %19, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0))
%21 = icmp ne i32 %20, 0
br i1 %21, label %23, label %22
22: ; preds = %18
store i32 4, i32* %3
br label %66
23: ; preds = %18
%24 = load i8*, i8** %2
%25 = call i32 @strcmp(i8* %24, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.4, i64 0, i64 0))
%26 = icmp ne i32 %25, 0
br i1 %26, label %28, label %27
27: ; preds = %23
store i32 5, i32* %3
br label %65
28: ; preds = %23
%29 = load i8*, i8** %2
%30 = call i32 @strcmp(i8* %29, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.5, i64 0, i64 0))
%31 = icmp ne i32 %30, 0
br i1 %31, label %33, label %32
32: ; preds = %28
store i32 6, i32* %3
br label %64
33: ; preds = %28
%34 = load i8*, i8** %2
%35 = call i32 @strcmp(i8* %34, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.6, i64 0, i64 0))
%36 = icmp ne i32 %35, 0
br i1 %36, label %38, label %37
37: ; preds = %33
store i32 7, i32* %3
br label %63
38: ; preds = %33
%39 = load i8*, i8** %2
%40 = call i32 @strcmp(i8* %39, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.7, i64 0, i64 0))
%41 = icmp ne i32 %40, 0
br i1 %41, label %43, label %42
42: ; preds = %38
store i32 8, i32* %3
br label %62
43: ; preds = %38
%44 = load i8*, i8** %2
%45 = call i32 @strcmp(i8* %44, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.8, i64 0, i64 0))
%46 = icmp ne i32 %45, 0
br i1 %46, label %48, label %47
47: ; preds = %43
store i32 9, i32* %3
br label %61
48: ; preds = %43
%49 = load i8*, i8** %2
%50 = call i32 @strcmp(i8* %49, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.9, i64 0, i64 0))
%51 = icmp ne i32 %50, 0
br i1 %51, label %53, label %52
52: ; preds = %48
store i32 10, i32* %3
br label %60
53: ; preds = %48
%54 = load i8*, i8** %2
%55 = call i32 @strcmp(i8* %54, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.10, i64 0, i64 0))
%56 = icmp ne i32 %55, 0
br i1 %56, label %58, label %57
57: ; preds = %53
store i32 11, i32* %3
br label %59
58: ; preds = %53
store i32 0, i32* %3
br label %59
59: ; preds = %58, %57
br label %60
60: ; preds = %59, %52
br label %61
61: ; preds = %60, %47
br label %62
62: ; preds = %61, %42
br label %63
63: ; preds = %62, %37
br label %64
64: ; preds = %63, %32
br label %65
65: ; preds = %64, %27
br label %66
66: ; preds = %65, %22
br label %67
67: ; preds = %66, %17
br label %68
68: ; preds = %67, %12
br label %69
69: ; preds = %68, %7
%70 = load i32, i32* %3
ret i32 %70
}

LLVM IR (-O2):
@.str = [5 x i8] c"-tpc\00"
@.str.1 = [5 x i8] c"-tpr\00"
@.str.2 = [5 x i8] c"-tpf\00"
@.str.3 = [5 x i8] c"-tgc\00"
@.str.4 = [5 x i8] c"-tgr\00"
@.str.5 = [5 x i8] c"-tgf\00"
@.str.6 = [5 x i8] c"-mtc\00"
@.str.7 = [5 x i8] c"-mtr\00"
@.str.8 = [5 x i8] c"-mtf\00"
@.str.9 = [6 x i8] c"-tgdc\00"
@.str.10 = [6 x i8] c"-tgdr\00"
define i32 @get_scenario(i8* nocapture %0) {
%2 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i32 %2, 0
br i1 %3, label %35, label %4
4: ; preds = %1
%5 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%6 = icmp eq i32 %5, 0
br i1 %6, label %35, label %7
7: ; preds = %4
%8 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
%9 = icmp eq i32 %8, 0
br i1 %9, label %35, label %10
10: ; preds = %7
%11 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0))
%12 = icmp eq i32 %11, 0
br i1 %12, label %35, label %13
13: ; preds = %10
%14 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.4, i64 0, i64 0))
%15 = icmp eq i32 %14, 0
br i1 %15, label %35, label %16
16: ; preds = %13
%17 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.5, i64 0, i64 0))
%18 = icmp eq i32 %17, 0
br i1 %18, label %35, label %19
19: ; preds = %16
%20 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.6, i64 0, i64 0))
%21 = icmp eq i32 %20, 0
br i1 %21, label %35, label %22
22: ; preds = %19
%23 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.7, i64 0, i64 0))
%24 = icmp eq i32 %23, 0
br i1 %24, label %35, label %25
25: ; preds = %22
%26 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.8, i64 0, i64 0))
%27 = icmp eq i32 %26, 0
br i1 %27, label %35, label %28
28: ; preds = %25
%29 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(6) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.9, i64 0, i64 0))
%30 = icmp eq i32 %29, 0
br i1 %30, label %35, label %31
31: ; preds = %28
%32 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(6) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.10, i64 0, i64 0))
%33 = icmp eq i32 %32, 0
%34 = select i1 %33, i32 11, i32 0
br label %35
35: ; preds = %31, %28, %25, %22, %19, %16, %13, %10, %7, %4, %1
%36 = phi i32 [ 1, %1 ], [ 2, %4 ], [ 3, %7 ], [ 4, %10 ], [ 5, %13 ], [ 6, %16 ], [ 7, %19 ], [ 8, %22 ], [ 9, %25 ], [ 10, %28 ], [ %34, %31 ]
ret i32 %36
}