#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(void) {
  int one;
  int two;
  int three;
  int four;
  int small;
  int smaller;
  int smallest;
  printf("Please enter 4 numbers separated by spaces > ");
  scanf("%d %d %d %d", &one, &two, &three, &four);
  if (one <= two)
    small = one;
  else
    small = two;
  if (small <= three)
    smaller = small;
  else
    smaller = three;
  if (smaller <= four)
    smallest = smaller;
  else
    smallest = four;
  printf("%d is the smallest", smallest);
  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
jg     1170 <main+0x50>
mov    -0x8(%rbp),%eax
mov    %eax,-0x18(%rbp)
jmp    1176 <main+0x56>
mov    -0xc(%rbp),%eax
mov    %eax,-0x18(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x10(%rbp),%eax
jg     118d <main+0x6d>
mov    -0x18(%rbp),%eax
mov    %eax,-0x1c(%rbp)
jmp    1193 <main+0x73>
mov    -0x10(%rbp),%eax
mov    %eax,-0x1c(%rbp)
mov    -0x1c(%rbp),%eax
cmp    -0x14(%rbp),%eax
jg     11aa <main+0x8a>
mov    -0x1c(%rbp),%eax
mov    %eax,-0x20(%rbp)
jmp    11b0 <main+0x90>
mov    -0x14(%rbp),%eax
mov    %eax,-0x20(%rbp)
mov    -0x20(%rbp),%esi
lea    0xe80(%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),%esi
mov    0x10(%rsp),%eax
cmp    %eax,%esi
cmovg  %eax,%esi
mov    0xc(%rsp),%eax
cmp    %eax,%esi
cmovg  %eax,%esi
mov    0x8(%rsp),%eax
cmp    %eax,%esi
cmovg  %eax,%esi
lea    0xec2(%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 = [12 x i8] c"%d %d %d %d\00"
@.str.2 = [19 x i8] c"%d is the smallest\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
%7 = alloca i32
%8 = alloca i32
store i32 0, i32* %1
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32* %2, i32* %3, i32* %4, i32* %5)
%11 = load i32, i32* %2
%12 = load i32, i32* %3
%13 = icmp sle i32 %11, %12
br i1 %13, label %14, label %16
14: ; preds = %0
%15 = load i32, i32* %2
store i32 %15, i32* %6
br label %18
16: ; preds = %0
%17 = load i32, i32* %3
store i32 %17, i32* %6
br label %18
18: ; preds = %16, %14
%19 = load i32, i32* %6
%20 = load i32, i32* %4
%21 = icmp sle i32 %19, %20
br i1 %21, label %22, label %24
22: ; preds = %18
%23 = load i32, i32* %6
store i32 %23, i32* %7
br label %26
24: ; preds = %18
%25 = load i32, i32* %4
store i32 %25, i32* %7
br label %26
26: ; preds = %24, %22
%27 = load i32, i32* %7
%28 = load i32, i32* %5
%29 = icmp sle i32 %27, %28
br i1 %29, label %30, label %32
30: ; preds = %26
%31 = load i32, i32* %7
store i32 %31, i32* %8
br label %34
32: ; preds = %26
%33 = load i32, i32* %5
store i32 %33, i32* %8
br label %34
34: ; preds = %32, %30
%35 = load i32, i32* %8
%36 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0), i32 %35)
ret i32 0
}

LLVM IR (-O2):
@.str = [46 x i8] c"Please enter 4 numbers separated by spaces > \00"
@.str.1 = [12 x i8] c"%d %d %d %d\00"
@.str.2 = [19 x i8] c"%d is the smallest\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 ([12 x i8], [12 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 sgt i32 %11, %12
%14 = select i1 %13, i32 %12, i32 %11
%15 = load i32, i32* %3
%16 = icmp sgt i32 %14, %15
%17 = select i1 %16, i32 %15, i32 %14
%18 = load i32, i32* %4
%19 = icmp sgt i32 %17, %18
%20 = select i1 %19, i32 %18, i32 %17
%21 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0), i32 %20)
ret i32 0
}