#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 */
int /*<<< orphan*/ printf(char *);
void print_lnk(int const LNK) {
  switch (LNK) {
  case 0:
    printf("  Unsorted\n");
    break;
  case 1:
    printf("  Lexico\n");
    break;
  case 2:
    printf("  Polar\n");
    break;
  case 3:
    printf("  Graham\n");
    break;
  case 4:
    printf("  Jarvis\n");
    break;
  default:
    printf("  Nothing to print\n");
    break;
  }
}


x86 assembly (clang, -O0):
<print_lnk>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x4(%rbp)
mov    -0x4(%rbp),%eax
mov    %rax,-0x10(%rbp)
sub    $0x4,%rax
ja     1195 <print_lnk+0x85>
mov    -0x10(%rbp),%rax
lea    0xec9(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xecd(%rip),%rdi
call   1030 <printf@plt>
jmp    11a1 <print_lnk+0x91>
lea    0xec8(%rip),%rdi
call   1030 <printf@plt>
jmp    11a1 <print_lnk+0x91>
lea    0xec1(%rip),%rdi
call   1030 <printf@plt>
jmp    11a1 <print_lnk+0x91>
lea    0xeb9(%rip),%rdi
call   1030 <printf@plt>
jmp    11a1 <print_lnk+0x91>
lea    0xeb2(%rip),%rdi
call   1030 <printf@plt>
jmp    11a1 <print_lnk+0x91>
lea    0xeab(%rip),%rdi
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<print_lnk>:
cmp    $0x4,%edi
ja     112b <print_lnk+0x1b>
movslq %edi,%rax
lea    0xf25(%rip),%rcx
movslq (%rcx,%rax,4),%rdi
add    %rcx,%rdi
jmp    1030 <puts@plt>
lea    0xefc(%rip),%rdi
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [12 x i8] c" Unsorted\0A\00"
@.str.1 = [10 x i8] c" Lexico\0A\00"
@.str.2 = [9 x i8] c" Polar\0A\00"
@.str.3 = [10 x i8] c" Graham\0A\00"
@.str.4 = [10 x i8] c" Jarvis\0A\00"
@.str.5 = [20 x i8] c" Nothing to print\0A\00"
define void @print_lnk(i32 %0) {
%2 = alloca i32
store i32 %0, i32* %2
%3 = load i32, i32* %2
switch i32 %3, label %14 [
i32 0, label %4
i32 1, label %6
i32 2, label %8
i32 3, label %10
i32 4, label %12
]
4: ; preds = %1
%5 = call i32 @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0))
br label %16
6: ; preds = %1
%7 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0))
br label %16
8: ; preds = %1
%9 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.2, i64 0, i64 0))
br label %16
10: ; preds = %1
%11 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.3, i64 0, i64 0))
br label %16
12: ; preds = %1
%13 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0))
br label %16
14: ; preds = %1
%15 = call i32 @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.5, i64 0, i64 0))
br label %16
16: ; preds = %14, %12, %10, %8, %6, %4
ret void
}

LLVM IR (-O2):
@str = [9 x i8] c" Jarvis\00"
@str.6 = [9 x i8] c" Graham\00"
@str.7 = [8 x i8] c" Polar\00"
@str.8 = [9 x i8] c" Lexico\00"
@str.9 = [11 x i8] c" Unsorted\00"
@str.10 = [19 x i8] c" Nothing to print\00"
@reltable.print_lnk = [5 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([11 x i8]* @str.9 to i64), i64 ptrtoint ([5 x i32]* @reltable.print_lnk to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @str.8 to i64), i64 ptrtoint ([5 x i32]* @reltable.print_lnk to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @str.7 to i64), i64 ptrtoint ([5 x i32]* @reltable.print_lnk to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @str.6 to i64), i64 ptrtoint ([5 x i32]* @reltable.print_lnk to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @str to i64), i64 ptrtoint ([5 x i32]* @reltable.print_lnk to i64)) to i32)]
define void @print_lnk(i32 %0) {
%2 = icmp ult i32 %0, 5
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 ([5 x i32]* @reltable.print_lnk to i8*), i64 %5)
br label %7
7: ; preds = %1, %3
%8 = phi i8* [ %6, %3 ], [ getelementptr inbounds ([19 x i8], [19 x i8]* @str.10, i64 0, i64 0), %1 ]
%9 = tail call i32 @puts(i8* dereferenceable(1) %8)
ret void
}