#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 *, int *, int *);
int main() {
  int a, b, c, d, sm;
  printf("Please enter 4 numbers separated by spaces > ");
  scanf("%d%d%d%d", &a, &b, &c, &d);
  if (a < b && a < c && a < d)
    printf("%d is the smallest\n", a);
  else if (b < a && b < c && b < d)
    printf("%d is the smallest\n", b);
  else if (c < a && c < b && c < d)
    printf("%d is the smallest\n", c);
  else if (d < a && d < b && d < c)
    printf("%d is the smallest\n", d);
  else
    printf("They have to be different numbers");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeea(%rip),%rdi
lea    -0x8(%rbp),%rsi
lea    -0xc(%rbp),%rdx
lea    -0x10(%rbp),%rcx
lea    -0x14(%rbp),%r8
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1193 <main+0x73>
mov    -0x8(%rbp),%eax
cmp    -0x10(%rbp),%eax
jge    1193 <main+0x73>
mov    -0x8(%rbp),%eax
cmp    -0x14(%rbp),%eax
jge    1193 <main+0x73>
mov    -0x8(%rbp),%esi
lea    0xeb0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    125e <main+0x13e>
mov    -0xc(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    11cd <main+0xad>
mov    -0xc(%rbp),%eax
cmp    -0x10(%rbp),%eax
jge    11cd <main+0xad>
mov    -0xc(%rbp),%eax
cmp    -0x14(%rbp),%eax
jge    11cd <main+0xad>
mov    -0xc(%rbp),%esi
lea    0xe76(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    1259 <main+0x139>
mov    -0x10(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    1207 <main+0xe7>
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1207 <main+0xe7>
mov    -0x10(%rbp),%eax
cmp    -0x14(%rbp),%eax
jge    1207 <main+0xe7>
mov    -0x10(%rbp),%esi
lea    0xe3c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    1254 <main+0x134>
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    1241 <main+0x121>
mov    -0x14(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1241 <main+0x121>
mov    -0x14(%rbp),%eax
cmp    -0x10(%rbp),%eax
jge    1241 <main+0x121>
mov    -0x14(%rbp),%esi
lea    0xe02(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    124f <main+0x12f>
lea    0xe03(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    1254 <main+0x134>
jmp    1259 <main+0x139>
jmp    125e <main+0x13e>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
sub    $0x18,%rsp
lea    0xed5(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xef5(%rip),%rdi
lea    0x14(%rsp),%rsi
lea    0x10(%rsp),%rdx
lea    0xc(%rsp),%rcx
lea    0x8(%rsp),%r8
call   1040 <scanf@plt>
mov    0x14(%rsp),%edx
mov    0x10(%rsp),%ecx
mov    0xc(%rsp),%eax
mov    0x8(%rsp),%esi
cmp    %ecx,%edx
jge    1179 <main+0x59>
cmp    %eax,%edx
jge    1179 <main+0x59>
cmp    %esi,%edx
jge    1179 <main+0x59>
lea    0xec2(%rip),%rdi
mov    %edx,%esi
jmp    11ba <main+0x9a>
cmp    %edx,%ecx
jge    1190 <main+0x70>
cmp    %eax,%ecx
jge    1190 <main+0x70>
cmp    %esi,%ecx
jge    1190 <main+0x70>
lea    0xeab(%rip),%rdi
mov    %ecx,%esi
jmp    11ba <main+0x9a>
cmp    %edx,%eax
jge    11a7 <main+0x87>
cmp    %ecx,%eax
jge    11a7 <main+0x87>
cmp    %esi,%eax
jge    11a7 <main+0x87>
lea    0xe94(%rip),%rdi
mov    %eax,%esi
jmp    11ba <main+0x9a>
cmp    %edx,%esi
jge    11c8 <main+0xa8>
cmp    %ecx,%esi
jge    11c8 <main+0xa8>
cmp    %eax,%esi
jge    11c8 <main+0xa8>
lea    0xe7d(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x18,%rsp
ret
lea    0xe7c(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
jmp    11c1 <main+0xa1>

LLVM IR (-O0):
@.str = [46 x i8] c"Please enter 4 numbers separated by spaces > \00"
@.str.1 = [9 x i8] c"%d%d%d%d\00"
@.str.2 = [20 x i8] c"%d is the smallest\0A\00"
@.str.3 = [34 x i8] c"They have to be different numbers\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
store i32 0, i32* %1
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.1, i64 0, i64 0), i32* %2, i32* %3, i32* %4, i32* %5)
%9 = load i32, i32* %2
%10 = load i32, i32* %3
%11 = icmp slt i32 %9, %10
br i1 %11, label %12, label %23
12: ; preds = %0
%13 = load i32, i32* %2
%14 = load i32, i32* %4
%15 = icmp slt i32 %13, %14
br i1 %15, label %16, label %23
16: ; preds = %12
%17 = load i32, i32* %2
%18 = load i32, i32* %5
%19 = icmp slt i32 %17, %18
br i1 %19, label %20, label %23
20: ; preds = %16
%21 = load i32, i32* %2
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %21)
br label %73
23: ; preds = %16, %12, %0
%24 = load i32, i32* %3
%25 = load i32, i32* %2
%26 = icmp slt i32 %24, %25
br i1 %26, label %27, label %38
27: ; preds = %23
%28 = load i32, i32* %3
%29 = load i32, i32* %4
%30 = icmp slt i32 %28, %29
br i1 %30, label %31, label %38
31: ; preds = %27
%32 = load i32, i32* %3
%33 = load i32, i32* %5
%34 = icmp slt i32 %32, %33
br i1 %34, label %35, label %38
35: ; preds = %31
%36 = load i32, i32* %3
%37 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %36)
br label %72
38: ; preds = %31, %27, %23
%39 = load i32, i32* %4
%40 = load i32, i32* %2
%41 = icmp slt i32 %39, %40
br i1 %41, label %42, label %53
42: ; preds = %38
%43 = load i32, i32* %4
%44 = load i32, i32* %3
%45 = icmp slt i32 %43, %44
br i1 %45, label %46, label %53
46: ; preds = %42
%47 = load i32, i32* %4
%48 = load i32, i32* %5
%49 = icmp slt i32 %47, %48
br i1 %49, label %50, label %53
50: ; preds = %46
%51 = load i32, i32* %4
%52 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %51)
br label %71
53: ; preds = %46, %42, %38
%54 = load i32, i32* %5
%55 = load i32, i32* %2
%56 = icmp slt i32 %54, %55
br i1 %56, label %57, label %68
57: ; preds = %53
%58 = load i32, i32* %5
%59 = load i32, i32* %3
%60 = icmp slt i32 %58, %59
br i1 %60, label %61, label %68
61: ; preds = %57
%62 = load i32, i32* %5
%63 = load i32, i32* %4
%64 = icmp slt i32 %62, %63
br i1 %64, label %65, label %68
65: ; preds = %61
%66 = load i32, i32* %5
%67 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %66)
br label %70
68: ; preds = %61, %57, %53
%69 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.3, i64 0, i64 0))
br label %70
70: ; preds = %68, %65
br label %71
71: ; preds = %70, %50
br label %72
72: ; preds = %71, %35
br label %73
73: ; preds = %72, %20
ret i32 0
}

LLVM IR (-O2):
@.str = [46 x i8] c"Please enter 4 numbers separated by spaces > \00"
@.str.1 = [9 x i8] c"%d%d%d%d\00"
@.str.2 = [20 x i8] c"%d is the smallest\0A\00"
@.str.3 = [34 x i8] c"They have to be different numbers\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = bitcast i32* %1 to i8*
%6 = bitcast i32* %2 to i8*
%7 = bitcast i32* %3 to i8*
%8 = bitcast i32* %4 to i8*
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([46 x i8], [46 x i8]* @.str, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.1, i64 0, i64 0), i32* %1, i32* %2, i32* %3, i32* %4)
%11 = load i32, i32* %1
%12 = load i32, i32* %2
%13 = icmp slt i32 %11, %12
%14 = load i32, i32* %3
%15 = icmp slt i32 %11, %14
%16 = select i1 %13, i1 %15, i1 false
%17 = load i32, i32* %4
%18 = icmp slt i32 %11, %17
%19 = select i1 %16, i1 %18, i1 false
br i1 %19, label %20, label %22
20: ; preds = %0
%21 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %11)
br label %48
22: ; preds = %0
%23 = icmp slt i32 %12, %11
%24 = icmp slt i32 %12, %14
%25 = select i1 %23, i1 %24, i1 false
%26 = icmp slt i32 %12, %17
%27 = select i1 %25, i1 %26, i1 false
br i1 %27, label %28, label %30
28: ; preds = %22
%29 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %12)
br label %48
30: ; preds = %22
%31 = icmp slt i32 %14, %11
%32 = icmp slt i32 %14, %12
%33 = select i1 %31, i1 %32, i1 false
%34 = icmp slt i32 %14, %17
%35 = select i1 %33, i1 %34, i1 false
br i1 %35, label %36, label %38
36: ; preds = %30
%37 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %14)
br label %48
38: ; preds = %30
%39 = icmp slt i32 %17, %11
%40 = icmp slt i32 %17, %12
%41 = select i1 %39, i1 %40, i1 false
%42 = icmp slt i32 %17, %14
%43 = select i1 %41, i1 %42, i1 false
br i1 %43, label %44, label %46
44: ; preds = %38
%45 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %17)
br label %48
46: ; preds = %38
%47 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([34 x i8], [34 x i8]* @.str.3, i64 0, i64 0))
br label %48
48: ; preds = %28, %44, %46, %36, %20
ret i32 0
}