const char *getconf_error(int error) {
  switch (error) {
  case 0:
    return "successful completion";
  case 1:
    return "invalid argument";
  case 2:
    return "could not access config file";
  case 3:
    return "config file section not found";
  case 4:
    return "key not found in section";
  case 5:
    return "section or include nesting too deep";
  case 6:
    return "could not allocate memory";
  case 7:
    return "invalid value associated with key";
  case 8:
    return "try operation again (lockfile exists?)";
  default:
    return "unknown error";
  }
}


x86 assembly (clang, -O0):
<getconf_error>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0xc(%rbp)
mov    -0xc(%rbp),%eax
mov    %rax,-0x18(%rbp)
sub    $0x8,%rax
ja     11bc <getconf_error+0xbc>
mov    -0x18(%rbp),%rax
lea    0xedd(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xef1(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11c7 <getconf_error+0xc7>
lea    0xef7(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11c7 <getconf_error+0xc7>
lea    0xef8(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11c7 <getconf_error+0xc7>
lea    0xf05(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11c7 <getconf_error+0xc7>
lea    0xf13(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11c7 <getconf_error+0xc7>
lea    0xf1c(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11c7 <getconf_error+0xc7>
lea    0xf30(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11c7 <getconf_error+0xc7>
lea    0xf3a(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11c7 <getconf_error+0xc7>
lea    0xf4c(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11c7 <getconf_error+0xc7>
lea    0xf63(%rip),%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<getconf_error>:
cmp    $0x8,%edi
ja     1117 <getconf_error+0x17>
movslq %edi,%rax
lea    0x1001(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
ret
lea    0xfe4(%rip),%rax
ret

LLVM IR (-O0):
@.str = [22 x i8] c"successful completion\00"
@.str.1 = [17 x i8] c"invalid argument\00"
@.str.2 = [29 x i8] c"could not access config file\00"
@.str.3 = [30 x i8] c"config file section not found\00"
@.str.4 = [25 x i8] c"key not found in section\00"
@.str.5 = [36 x i8] c"section or include nesting too deep\00"
@.str.6 = [26 x i8] c"could not allocate memory\00"
@.str.7 = [34 x i8] c"invalid value associated with key\00"
@.str.8 = [39 x i8] c"try operation again (lockfile exists?)\00"
@.str.9 = [14 x i8] c"unknown error\00"
define i8* @getconf_error(i32 %0) {
%2 = alloca i8*
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
switch i32 %4, label %14 [
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
]
5: ; preds = %1
store i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0), i8** %2
br label %15
6: ; preds = %1
store i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.1, i64 0, i64 0), i8** %2
br label %15
7: ; preds = %1
store i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.2, i64 0, i64 0), i8** %2
br label %15
8: ; preds = %1
store i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.3, i64 0, i64 0), i8** %2
br label %15
9: ; preds = %1
store i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %15
10: ; preds = %1
store i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.5, i64 0, i64 0), i8** %2
br label %15
11: ; preds = %1
store i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.6, i64 0, i64 0), i8** %2
br label %15
12: ; preds = %1
store i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.7, i64 0, i64 0), i8** %2
br label %15
13: ; preds = %1
store i8* getelementptr inbounds ([39 x i8], [39 x i8]* @.str.8, i64 0, i64 0), i8** %2
br label %15
14: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.9, i64 0, i64 0), i8** %2
br label %15
15: ; preds = %14, %13, %12, %11, %10, %9, %8, %7, %6, %5
%16 = load i8*, i8** %2
ret i8* %16
}

LLVM IR (-O2):
@.str = [22 x i8] c"successful completion\00"
@.str.1 = [17 x i8] c"invalid argument\00"
@.str.2 = [29 x i8] c"could not access config file\00"
@.str.3 = [30 x i8] c"config file section not found\00"
@.str.4 = [25 x i8] c"key not found in section\00"
@.str.5 = [36 x i8] c"section or include nesting too deep\00"
@.str.6 = [26 x i8] c"could not allocate memory\00"
@.str.7 = [34 x i8] c"invalid value associated with key\00"
@.str.8 = [39 x i8] c"try operation again (lockfile exists?)\00"
@.str.9 = [14 x i8] c"unknown error\00"
@reltable.getconf_error = [9 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([22 x i8]* @.str to i64), i64 ptrtoint ([9 x i32]* @reltable.getconf_error to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([17 x i8]* @.str.1 to i64), i64 ptrtoint ([9 x i32]* @reltable.getconf_error to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([29 x i8]* @.str.2 to i64), i64 ptrtoint ([9 x i32]* @reltable.getconf_error to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([30 x i8]* @.str.3 to i64), i64 ptrtoint ([9 x i32]* @reltable.getconf_error to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([25 x i8]* @.str.4 to i64), i64 ptrtoint ([9 x i32]* @reltable.getconf_error to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([36 x i8]* @.str.5 to i64), i64 ptrtoint ([9 x i32]* @reltable.getconf_error to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([26 x i8]* @.str.6 to i64), i64 ptrtoint ([9 x i32]* @reltable.getconf_error to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([34 x i8]* @.str.7 to i64), i64 ptrtoint ([9 x i32]* @reltable.getconf_error to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([39 x i8]* @.str.8 to i64), i64 ptrtoint ([9 x i32]* @reltable.getconf_error to i64)) to i32)]
define i8* @getconf_error(i32 %0) {
%2 = icmp ult i32 %0, 9
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 ([9 x i32]* @reltable.getconf_error 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.9, i64 0, i64 0), %1 ]
ret i8* %8
}