#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 n1, n2, n3, n4, small;
  printf("Please enter 4 numbers separated by spaces > ");
  scanf("%d%d%d%d", &n1, &n2, &n3, &n4);
  small = n1;
  if (n2 < n1)
    small = n2;
  if (n3 < n2)
    small = n3;
  if (n4 < n3)
    small = n4;
  else if (n4 < n1)
    small = n4;
  printf("%d is the smallest\n", small);
  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
mov    %eax,-0x18(%rbp)
mov    -0xc(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    1171 <main+0x51>
mov    -0xc(%rbp),%eax
mov    %eax,-0x18(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1183 <main+0x63>
mov    -0x10(%rbp),%eax
mov    %eax,-0x18(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x10(%rbp),%eax
jge    119a <main+0x7a>
mov    -0x14(%rbp),%eax
mov    %eax,-0x18(%rbp)
jmp    11b1 <main+0x91>
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    11ac <main+0x8c>
mov    -0x14(%rbp),%eax
mov    %eax,-0x18(%rbp)
jmp    11b1 <main+0x91>
mov    -0x18(%rbp),%esi
lea    0xe7c(%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),%ecx
cmp    %eax,%ecx
mov    %eax,%esi
cmovl  %ecx,%esi
mov    0xc(%rsp),%edx
cmp    %ecx,%edx
cmovl  %edx,%esi
mov    0x8(%rsp),%ecx
cmp    %eax,%ecx
cmovl  %ecx,%esi
cmp    %edx,%ecx
cmovl  %ecx,%esi
lea    0xeb8(%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
store i32 %9, i32* %6
%10 = load i32, i32* %3
%11 = load i32, i32* %2
%12 = icmp slt i32 %10, %11
br i1 %12, label %13, label %15
13: ; preds = %0
%14 = load i32, i32* %3
store i32 %14, i32* %6
br label %15
15: ; preds = %13, %0
%16 = load i32, i32* %4
%17 = load i32, i32* %3
%18 = icmp slt i32 %16, %17
br i1 %18, label %19, label %21
19: ; preds = %15
%20 = load i32, i32* %4
store i32 %20, i32* %6
br label %21
21: ; preds = %19, %15
%22 = load i32, i32* %5
%23 = load i32, i32* %4
%24 = icmp slt i32 %22, %23
br i1 %24, label %25, label %27
25: ; preds = %21
%26 = load i32, i32* %5
store i32 %26, i32* %6
br label %34
27: ; preds = %21
%28 = load i32, i32* %5
%29 = load i32, i32* %2
%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
br label %34
34: ; preds = %33, %25
%35 = load i32, i32* %6
%36 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 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 = [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 %12, %11
%14 = select i1 %13, i32 %12, i32 %11
%15 = load i32, i32* %3
%16 = icmp slt i32 %15, %12
%17 = select i1 %16, i32 %15, i32 %14
%18 = load i32, i32* %4
%19 = icmp slt i32 %18, %15
%20 = icmp slt i32 %18, %11
%21 = select i1 %19, i1 true, i1 %20
%22 = select i1 %21, i32 %18, i32 %17
%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
}