#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 *);
int /*<<< orphan*/ scanf(char *, int *);
int main() {
  int d;
  printf("input the day:");
  scanf("%d", &d);
  switch (d) {
  case 1:
    printf("Today is Monday.\n");
    break;
  case 2:
    printf("Today is Tuesday.\n");
    break;
  case 3:
    printf("Today is Wednesday.\n");
    break;
  case 4:
    printf("Today is Thurday.\n");
    break;
  case 5:
    printf("Today is Friday.\n");
    break;
  case 6:
    printf("Today is Saturday.\n");
    break;
  case 7:
    printf("Today is Sunday.\n");
    break;
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xee6(%rip),%rdi
call   1030 <printf@plt>
lea    0xee9(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
add    $0xffffffff,%eax
mov    %eax,%ecx
mov    %rcx,-0x10(%rbp)
sub    $0x6,%eax
ja     11e6 <main+0xc6>
mov    -0x10(%rbp),%rax
lea    0xe95(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xeb3(%rip),%rdi
call   1030 <printf@plt>
jmp    11e6 <main+0xc6>
lea    0xeb4(%rip),%rdi
call   1030 <printf@plt>
jmp    11e6 <main+0xc6>
lea    0xeb6(%rip),%rdi
call   1030 <printf@plt>
jmp    11e6 <main+0xc6>
lea    0xeba(%rip),%rdi
call   1030 <printf@plt>
jmp    11e6 <main+0xc6>
lea    0xebc(%rip),%rdi
call   1030 <printf@plt>
jmp    11e6 <main+0xc6>
lea    0xebd(%rip),%rdi
call   1030 <printf@plt>
jmp    11e6 <main+0xc6>
lea    0xec0(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xec8(%rip),%rdi
call   1040 <printf@plt>
lea    0xecb(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%eax
add    $0xffffffff,%eax
cmp    $0x6,%eax
ja     116f <main+0x3f>
cltq
lea    0xf2d(%rip),%rcx
movslq (%rcx,%rax,4),%rdi
add    %rcx,%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [15 x i8] c"input the day:\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [18 x i8] c"Today is Monday.\0A\00"
@.str.3 = [19 x i8] c"Today is Tuesday.\0A\00"
@.str.4 = [21 x i8] c"Today is Wednesday.\0A\00"
@.str.5 = [19 x i8] c"Today is Thurday.\0A\00"
@.str.6 = [18 x i8] c"Today is Friday.\0A\00"
@.str.7 = [20 x i8] c"Today is Saturday.\0A\00"
@.str.8 = [18 x i8] c"Today is Sunday.\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%5 = load i32, i32* %2
switch i32 %5, label %20 [
i32 1, label %6
i32 2, label %8
i32 3, label %10
i32 4, label %12
i32 5, label %14
i32 6, label %16
i32 7, label %18
]
6: ; preds = %0
%7 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0))
br label %20
8: ; preds = %0
%9 = call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.3, i64 0, i64 0))
br label %20
10: ; preds = %0
%11 = call i32 @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.4, i64 0, i64 0))
br label %20
12: ; preds = %0
%13 = call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.5, i64 0, i64 0))
br label %20
14: ; preds = %0
%15 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.6, i64 0, i64 0))
br label %20
16: ; preds = %0
%17 = call i32 @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.7, i64 0, i64 0))
br label %20
18: ; preds = %0
%19 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.8, i64 0, i64 0))
br label %20
20: ; preds = %0, %18, %16, %14, %12, %10, %8, %6
ret i32 0
}

LLVM IR (-O2):
@.str = [15 x i8] c"input the day:\00"
@.str.1 = [3 x i8] c"%d\00"
@str = [17 x i8] c"Today is Sunday.\00"
@str.9 = [19 x i8] c"Today is Saturday.\00"
@str.10 = [17 x i8] c"Today is Friday.\00"
@str.11 = [18 x i8] c"Today is Thurday.\00"
@str.12 = [20 x i8] c"Today is Wednesday.\00"
@str.13 = [18 x i8] c"Today is Tuesday.\00"
@str.14 = [17 x i8] c"Today is Monday.\00"
@reltable.main = [7 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([17 x i8]* @str.14 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([18 x i8]* @str.13 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([20 x i8]* @str.12 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([18 x i8]* @str.11 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([17 x i8]* @str.10 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([19 x i8]* @str.9 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([17 x i8]* @str to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32)]
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%5 = load i32, i32* %1
%6 = add i32 %5, -1
%7 = icmp ult i32 %6, 7
br i1 %7, label %8, label %13
8: ; preds = %0
%9 = sext i32 %6 to i64
%10 = shl i64 %9, 2
%11 = call i8* @llvm.load.relative.i64(i8* bitcast ([7 x i32]* @reltable.main to i8*), i64 %10)
%12 = call i32 @puts(i8* dereferenceable(1) %11)
br label %13
13: ; preds = %0, %8
ret i32 0
}