#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 first, second, third, fourth, lowest;
  printf("Please enter 4 numbers separated by spaces > ");
  scanf("%d%d%d%d", &first, &second, &third, &fourth);
  if (first < second) {
    lowest = first;
  } else if (second < first) {
    lowest = second;
  }
  if (third < lowest) {
    lowest = third;
  }
  if (fourth < lowest) {
    lowest = fourth;
  }
  printf("%d is the smallest\n", lowest);
  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    1170 <main+0x50>
mov    -0x8(%rbp),%eax
mov    %eax,-0x18(%rbp)
jmp    1187 <main+0x67>
mov    -0xc(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    1182 <main+0x62>
mov    -0xc(%rbp),%eax
mov    %eax,-0x18(%rbp)
jmp    1187 <main+0x67>
mov    -0x10(%rbp),%eax
cmp    -0x18(%rbp),%eax
jge    1199 <main+0x79>
mov    -0x10(%rbp),%eax
mov    %eax,-0x18(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x18(%rbp),%eax
jge    11ab <main+0x8b>
mov    -0x14(%rbp),%eax
mov    %eax,-0x18(%rbp)
mov    -0x18(%rbp),%esi
lea    0xe82(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
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),%eax
mov    0x10(%rsp),%esi
cmp    %esi,%eax
cmovl  %eax,%esi
mov    0xc(%rsp),%eax
cmp    %esi,%eax
cmovl  %eax,%esi
mov    0x8(%rsp),%eax
cmp    %esi,%eax
cmovl  %eax,%esi
lea    0xebf(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x18,%rsp
ret

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"
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 %14
12: ; preds = %0
%13 = load i32, i32* %2
store i32 %13, i32* %6
br label %21
14: ; preds = %0
%15 = load i32, i32* %3
%16 = load i32, i32* %2
%17 = icmp slt i32 %15, %16
br i1 %17, label %18, label %20
18: ; preds = %14
%19 = load i32, i32* %3
store i32 %19, i32* %6
br label %20
20: ; preds = %18, %14
br label %21
21: ; preds = %20, %12
%22 = load i32, i32* %4
%23 = load i32, i32* %6
%24 = icmp slt i32 %22, %23
br i1 %24, label %25, label %27
25: ; preds = %21
%26 = load i32, i32* %4
store i32 %26, i32* %6
br label %27
27: ; preds = %25, %21
%28 = load i32, i32* %5
%29 = load i32, i32* %6
%30 = icmp slt i32 %28, %29
br i1 %30, label %31, label %33
31: ; preds = %27
%32 = load i32, i32* %5
store i32 %32, i32* %6
br label %33
33: ; preds = %31, %27
%34 = load i32, i32* %6
%35 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %34)
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"
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 = icmp slt i32 %12, %11
%15 = select i1 %14, i32 %12, i32 undef
%16 = select i1 %13, i32 %11, i32 %15
%17 = load i32, i32* %3
%18 = icmp slt i32 %17, %16
%19 = select i1 %18, i32 %17, i32 %16
%20 = load i32, i32* %4
%21 = icmp slt i32 %20, %19
%22 = select i1 %21, i32 %20, i32 %19
%23 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %22)
ret i32 0
}