char *errorName(int rc) {
  char *zName;
  switch (rc) {
  case 0:
    zName = "SQLITE_OK";
    break;
  case 1:
    zName = "SQLITE_ERROR";
    break;
  case 2:
    zName = "SQLITE_INTERNAL";
    break;
  case 3:
    zName = "SQLITE_PERM";
    break;
  case 4:
    zName = "SQLITE_ABORT";
    break;
  case 5:
    zName = "SQLITE_BUSY";
    break;
  case 7:
    zName = "SQLITE_NOMEM";
    break;
  case 8:
    zName = "SQLITE_READONLY";
    break;
  case 9:
    zName = "SQLITE_INTERRUPT";
    break;
  case 10:
    zName = "SQLITE_IOERR";
    break;
  case 11:
    zName = "SQLITE_CORRUPT";
    break;
  case 12:
    zName = "SQLITE_NOTFOUND";
    break;
  case 13:
    zName = "SQLITE_FULL";
    break;
  case 14:
    zName = "SQLITE_CANTOPEN";
    break;
  case 15:
    zName = "SQLITE_PROTOCOL";
    break;
  case 16:
    zName = "SQLITE_EMPTY";
    break;
  case 17:
    zName = "SQLITE_SCHEMA";
    break;
  case 18:
    zName = "SQLITE_TOOBIG";
    break;
  case 19:
    zName = "SQLITE_CONSTRAINT";
    break;
  case 20:
    zName = "SQLITE_MISMATCH";
    break;
  case 21:
    zName = "SQLITE_MISUSE";
    break;
  case 22:
    zName = "SQLITE_NOLFS";
    break;
  default:
    zName = "SQLITE_Unknown";
    break;
  }
  return zName;
}


x86 assembly (clang, -O0):
<errorName>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0x4(%rbp)
mov    -0x4(%rbp),%eax
mov    %rax,-0x18(%rbp)
sub    $0x16,%rax
ja     128c <errorName+0x18c>
mov    -0x18(%rbp),%rax
lea    0xedd(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xf29(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf23(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf20(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf20(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf1c(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf19(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf15(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf12(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf12(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf13(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf10(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf0f(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf0f(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf0b(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf0b(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf0b(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf08(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf06(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf04(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf06(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf06(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf04(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1297 <errorName+0x197>
lea    0xf01(%rip),%rax
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<errorName>:
cmp    $0x16,%edi
ja     1117 <errorName+0x17>
movslq %edi,%rax
lea    0x1039(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
ret
lea    0x101a(%rip),%rax
ret

LLVM IR (-O0):
@.str = [10 x i8] c"SQLITE_OK\00"
@.str.1 = [13 x i8] c"SQLITE_ERROR\00"
@.str.2 = [16 x i8] c"SQLITE_INTERNAL\00"
@.str.3 = [12 x i8] c"SQLITE_PERM\00"
@.str.4 = [13 x i8] c"SQLITE_ABORT\00"
@.str.5 = [12 x i8] c"SQLITE_BUSY\00"
@.str.6 = [13 x i8] c"SQLITE_NOMEM\00"
@.str.7 = [16 x i8] c"SQLITE_READONLY\00"
@.str.8 = [17 x i8] c"SQLITE_INTERRUPT\00"
@.str.9 = [13 x i8] c"SQLITE_IOERR\00"
@.str.10 = [15 x i8] c"SQLITE_CORRUPT\00"
@.str.11 = [16 x i8] c"SQLITE_NOTFOUND\00"
@.str.12 = [12 x i8] c"SQLITE_FULL\00"
@.str.13 = [16 x i8] c"SQLITE_CANTOPEN\00"
@.str.14 = [16 x i8] c"SQLITE_PROTOCOL\00"
@.str.15 = [13 x i8] c"SQLITE_EMPTY\00"
@.str.16 = [14 x i8] c"SQLITE_SCHEMA\00"
@.str.17 = [14 x i8] c"SQLITE_TOOBIG\00"
@.str.18 = [18 x i8] c"SQLITE_CONSTRAINT\00"
@.str.19 = [16 x i8] c"SQLITE_MISMATCH\00"
@.str.20 = [14 x i8] c"SQLITE_MISUSE\00"
@.str.21 = [13 x i8] c"SQLITE_NOLFS\00"
@.str.22 = [15 x i8] c"SQLITE_Unknown\00"
define i8* @errorName(i32 %0) {
%2 = alloca i32
%3 = alloca i8*
store i32 %0, i32* %2
%4 = load i32, i32* %2
switch i32 %4, label %27 [
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 7, label %11
i32 8, label %12
i32 9, label %13
i32 10, label %14
i32 11, label %15
i32 12, label %16
i32 13, label %17
i32 14, label %18
i32 15, label %19
i32 16, label %20
i32 17, label %21
i32 18, label %22
i32 19, label %23
i32 20, label %24
i32 21, label %25
i32 22, label %26
]
5: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), i8** %3
br label %28
6: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i8** %3
br label %28
7: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.2, i64 0, i64 0), i8** %3
br label %28
8: ; preds = %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i8** %3
br label %28
9: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.4, i64 0, i64 0), i8** %3
br label %28
10: ; preds = %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.5, i64 0, i64 0), i8** %3
br label %28
11: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.6, i64 0, i64 0), i8** %3
br label %28
12: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.7, i64 0, i64 0), i8** %3
br label %28
13: ; preds = %1
store i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.8, i64 0, i64 0), i8** %3
br label %28
14: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.9, i64 0, i64 0), i8** %3
br label %28
15: ; preds = %1
store i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.10, i64 0, i64 0), i8** %3
br label %28
16: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.11, i64 0, i64 0), i8** %3
br label %28
17: ; preds = %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.12, i64 0, i64 0), i8** %3
br label %28
18: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.13, i64 0, i64 0), i8** %3
br label %28
19: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.14, i64 0, i64 0), i8** %3
br label %28
20: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.15, i64 0, i64 0), i8** %3
br label %28
21: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.16, i64 0, i64 0), i8** %3
br label %28
22: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.17, i64 0, i64 0), i8** %3
br label %28
23: ; preds = %1
store i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.18, i64 0, i64 0), i8** %3
br label %28
24: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.19, i64 0, i64 0), i8** %3
br label %28
25: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.20, i64 0, i64 0), i8** %3
br label %28
26: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.21, i64 0, i64 0), i8** %3
br label %28
27: ; preds = %1
store i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.22, i64 0, i64 0), i8** %3
br label %28
28: ; preds = %27, %26, %25, %24, %23, %22, %21, %20, %19, %18, %17, %16, %15, %14, %13, %12, %11, %10, %9, %8, %7, %6, %5
%29 = load i8*, i8** %3
ret i8* %29
}

LLVM IR (-O2):
@.str = [10 x i8] c"SQLITE_OK\00"
@.str.1 = [13 x i8] c"SQLITE_ERROR\00"
@.str.2 = [16 x i8] c"SQLITE_INTERNAL\00"
@.str.3 = [12 x i8] c"SQLITE_PERM\00"
@.str.4 = [13 x i8] c"SQLITE_ABORT\00"
@.str.5 = [12 x i8] c"SQLITE_BUSY\00"
@.str.6 = [13 x i8] c"SQLITE_NOMEM\00"
@.str.7 = [16 x i8] c"SQLITE_READONLY\00"
@.str.8 = [17 x i8] c"SQLITE_INTERRUPT\00"
@.str.9 = [13 x i8] c"SQLITE_IOERR\00"
@.str.10 = [15 x i8] c"SQLITE_CORRUPT\00"
@.str.11 = [16 x i8] c"SQLITE_NOTFOUND\00"
@.str.12 = [12 x i8] c"SQLITE_FULL\00"
@.str.13 = [16 x i8] c"SQLITE_CANTOPEN\00"
@.str.14 = [16 x i8] c"SQLITE_PROTOCOL\00"
@.str.15 = [13 x i8] c"SQLITE_EMPTY\00"
@.str.16 = [14 x i8] c"SQLITE_SCHEMA\00"
@.str.17 = [14 x i8] c"SQLITE_TOOBIG\00"
@.str.18 = [18 x i8] c"SQLITE_CONSTRAINT\00"
@.str.19 = [16 x i8] c"SQLITE_MISMATCH\00"
@.str.20 = [14 x i8] c"SQLITE_MISUSE\00"
@.str.21 = [13 x i8] c"SQLITE_NOLFS\00"
@.str.22 = [15 x i8] c"SQLITE_Unknown\00"
@reltable.errorName = [23 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([10 x i8]* @.str to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([13 x i8]* @.str.1 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([16 x i8]* @.str.2 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([12 x i8]* @.str.3 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([13 x i8]* @.str.4 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([12 x i8]* @.str.5 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([15 x i8]* @.str.22 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([13 x i8]* @.str.6 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([16 x i8]* @.str.7 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([17 x i8]* @.str.8 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([13 x i8]* @.str.9 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([15 x i8]* @.str.10 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([16 x i8]* @.str.11 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([12 x i8]* @.str.12 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([16 x i8]* @.str.13 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([16 x i8]* @.str.14 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([13 x i8]* @.str.15 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([14 x i8]* @.str.16 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([14 x i8]* @.str.17 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([18 x i8]* @.str.18 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([16 x i8]* @.str.19 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([14 x i8]* @.str.20 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([13 x i8]* @.str.21 to i64), i64 ptrtoint ([23 x i32]* @reltable.errorName to i64)) to i32)]
define i8* @errorName(i32 %0) {
%2 = icmp ult i32 %0, 23
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 ([23 x i32]* @reltable.errorName to i8*), i64 %5)
br label %7
7: ; preds = %1, %3
%8 = phi i8* [ %6, %3 ], [ getelementptr inbounds ([15 x i8], [15 x i8]* @.str.22, i64 0, i64 0), %1 ]
ret i8* %8
}