const char *locator_event(int e) {
  const char *result;
  switch (e) {
  case 0:
    result = "locator unavailable";
    break;
  case 1:
    result = "request - received a DECRQLP";
    break;
  case 2:
    result = "left button down";
    break;
  case 3:
    result = "left button up";
    break;
  case 4:
    result = "middle button down";
    break;
  case 5:
    result = "middle button up";
    break;
  case 6:
    result = "right button down";
    break;
  case 7:
    result = "right button up";
    break;
  case 8:
    result = "M4 button down";
    break;
  case 9:
    result = "M4 button up";
    break;
  case 10:
    result = "locator outside filter rectangle";
    break;
  default:
    result = "unknown event";
    break;
  }
  return result;
}


x86 assembly (clang, -O0):
<locator_event>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0x4(%rbp)
mov    -0x4(%rbp),%eax
mov    %rax,-0x18(%rbp)
sub    $0xa,%rax
ja     11dc <locator_event+0xdc>
mov    -0x18(%rbp),%rax
lea    0xedd(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xef9(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11e7 <locator_event+0xe7>
lea    0xefd(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11e7 <locator_event+0xe7>
lea    0xf0a(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11e7 <locator_event+0xe7>
lea    0xf0b(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11e7 <locator_event+0xe7>
lea    0xf0a(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11e7 <locator_event+0xe7>
lea    0xf0d(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11e7 <locator_event+0xe7>
lea    0xf0e(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11e7 <locator_event+0xe7>
lea    0xf10(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11e7 <locator_event+0xe7>
lea    0xf10(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11e7 <locator_event+0xe7>
lea    0xf0f(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11e7 <locator_event+0xe7>
lea    0xf0c(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11e7 <locator_event+0xe7>
lea    0xf1d(%rip),%rax
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<locator_event>:
cmp    $0xa,%edi
ja     1117 <locator_event+0x17>
movslq %edi,%rax
lea    0xfd5(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
ret
lea    0xfb6(%rip),%rax
ret

LLVM IR (-O0):
@.str = [20 x i8] c"locator unavailable\00"
@.str.1 = [29 x i8] c"request - received a DECRQLP\00"
@.str.2 = [17 x i8] c"left button down\00"
@.str.3 = [15 x i8] c"left button up\00"
@.str.4 = [19 x i8] c"middle button down\00"
@.str.5 = [17 x i8] c"middle button up\00"
@.str.6 = [18 x i8] c"right button down\00"
@.str.7 = [16 x i8] c"right button up\00"
@.str.8 = [15 x i8] c"M4 button down\00"
@.str.9 = [13 x i8] c"M4 button up\00"
@.str.10 = [33 x i8] c"locator outside filter rectangle\00"
@.str.11 = [14 x i8] c"unknown event\00"
define i8* @locator_event(i32 %0) {
%2 = alloca i32
%3 = alloca i8*
store i32 %0, i32* %2
%4 = load i32, i32* %2
switch i32 %4, label %16 [
i32 0, label %5
i32 1, label %6
i32 2, label %7
i32 3, label %8
i32 4, label %9
i32 5, label %10
i32 6, label %11
i32 7, label %12
i32 8, label %13
i32 9, label %14
i32 10, label %15
]
5: ; preds = %1
store i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str, i64 0, i64 0), i8** %3
br label %17
6: ; preds = %1
store i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.1, i64 0, i64 0), i8** %3
br label %17
7: ; preds = %1
store i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.2, i64 0, i64 0), i8** %3
br label %17
8: ; preds = %1
store i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.3, i64 0, i64 0), i8** %3
br label %17
9: ; preds = %1
store i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.4, i64 0, i64 0), i8** %3
br label %17
10: ; preds = %1
store i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.5, i64 0, i64 0), i8** %3
br label %17
11: ; preds = %1
store i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.6, i64 0, i64 0), i8** %3
br label %17
12: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.7, i64 0, i64 0), i8** %3
br label %17
13: ; preds = %1
store i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.8, i64 0, i64 0), i8** %3
br label %17
14: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.9, i64 0, i64 0), i8** %3
br label %17
15: ; preds = %1
store i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str.10, i64 0, i64 0), i8** %3
br label %17
16: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.11, i64 0, i64 0), i8** %3
br label %17
17: ; preds = %16, %15, %14, %13, %12, %11, %10, %9, %8, %7, %6, %5
%18 = load i8*, i8** %3
ret i8* %18
}

LLVM IR (-O2):
@.str = [20 x i8] c"locator unavailable\00"
@.str.1 = [29 x i8] c"request - received a DECRQLP\00"
@.str.2 = [17 x i8] c"left button down\00"
@.str.3 = [15 x i8] c"left button up\00"
@.str.4 = [19 x i8] c"middle button down\00"
@.str.5 = [17 x i8] c"middle button up\00"
@.str.6 = [18 x i8] c"right button down\00"
@.str.7 = [16 x i8] c"right button up\00"
@.str.8 = [15 x i8] c"M4 button down\00"
@.str.9 = [13 x i8] c"M4 button up\00"
@.str.10 = [33 x i8] c"locator outside filter rectangle\00"
@.str.11 = [14 x i8] c"unknown event\00"
@reltable.locator_event = [11 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([20 x i8]* @.str to i64), i64 ptrtoint ([11 x i32]* @reltable.locator_event to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([29 x i8]* @.str.1 to i64), i64 ptrtoint ([11 x i32]* @reltable.locator_event to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([17 x i8]* @.str.2 to i64), i64 ptrtoint ([11 x i32]* @reltable.locator_event to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([15 x i8]* @.str.3 to i64), i64 ptrtoint ([11 x i32]* @reltable.locator_event to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([19 x i8]* @.str.4 to i64), i64 ptrtoint ([11 x i32]* @reltable.locator_event to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([17 x i8]* @.str.5 to i64), i64 ptrtoint ([11 x i32]* @reltable.locator_event to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([18 x i8]* @.str.6 to i64), i64 ptrtoint ([11 x i32]* @reltable.locator_event to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([16 x i8]* @.str.7 to i64), i64 ptrtoint ([11 x i32]* @reltable.locator_event to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([15 x i8]* @.str.8 to i64), i64 ptrtoint ([11 x i32]* @reltable.locator_event to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([13 x i8]* @.str.9 to i64), i64 ptrtoint ([11 x i32]* @reltable.locator_event to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([33 x i8]* @.str.10 to i64), i64 ptrtoint ([11 x i32]* @reltable.locator_event to i64)) to i32)]
define i8* @locator_event(i32 %0) {
%2 = icmp ult i32 %0, 11
br i1 %2, label %3, label %7
3: ; preds = %1
%4 = sext i32 %0 to i64
%5 = shl i64 %4, 2
%6 = call i8* @llvm.load.relative.i64(i8* bitcast ([11 x i32]* @reltable.locator_event to i8*), i64 %5)
br label %7
7: ; preds = %1, %3
%8 = phi i8* [ %6, %3 ], [ getelementptr inbounds ([14 x i8], [14 x i8]* @.str.11, i64 0, i64 0), %1 ]
ret i8* %8
}