#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 */
scalar_t__ malloc(int);
int /*<<< orphan*/ printf(char *, ...);
int scanf(char *, int *, int *);
int main() {
  int a, b;
  int r;
  char *huge_array;
  r = scanf("%d %d", &a, &b);
  huge_array = (char *)malloc(5000000);
  if (huge_array == NULL)
    printf("NO!");
  else
    printf("%d\n", a + b);
  a += r;
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeba(%rip),%rdi
lea    -0x8(%rbp),%rsi
lea    -0xc(%rbp),%rdx
call   1050 <scanf@plt>
mov    %eax,-0x10(%rbp)
mov    $0x4c4b40,%edi
call   1040 <malloc@plt>
mov    %rax,-0x18(%rbp)
cmpq   $0x0,-0x18(%rbp)
jne    1182 <main+0x52>
lea    0xe90(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    1196 <main+0x66>
mov    -0x8(%rbp),%esi
add    -0xc(%rbp),%esi
lea    0xe7b(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    -0x8(%rbp),%eax
mov    %eax,-0x8(%rbp)
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xec8(%rip),%rdi
lea    0x4(%rsp),%rsi
mov    %rsp,%rdx
call   1050 <scanf@plt>
mov    $0x4c4b40,%edi
call   1040 <malloc@plt>
test   %rax,%rax
je     116b <main+0x3b>
mov    (%rsp),%esi
add    0x4(%rsp),%esi
lea    0xea8(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
jmp    1179 <main+0x49>
lea    0xe94(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [6 x i8] c"%d %d\00"
@.str.1 = [4 x i8] c"NO!\00"
@.str.2 = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8*
store i32 0, i32* %1
%6 = call i32 @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i32* %2, i32* %3)
store i32 %6, i32* %4
%7 = call i64 @malloc(i32 5000000)
%8 = inttoptr i64 %7 to i8*
store i8* %8, i8** %5
%9 = load i8*, i8** %5
%10 = icmp eq i8* %9, null
br i1 %10, label %11, label %13
11: ; preds = %0
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0))
br label %18
13: ; preds = %0
%14 = load i32, i32* %2
%15 = load i32, i32* %3
%16 = add nsw i32 %14, %15
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %16)
br label %18
18: ; preds = %13, %11
%19 = load i32, i32* %4
%20 = load i32, i32* %2
%21 = add nsw i32 %20, %19
store i32 %21, i32* %2
ret i32 0
}

LLVM IR (-O2):
@.str = [6 x i8] c"%d %d\00"
@.str.1 = [4 x i8] c"NO!\00"
@.str.2 = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
%4 = bitcast i32* %2 to i8*
%5 = call i32 @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i32* %1, i32* %2)
%6 = call i64 @malloc(i32 5000000)
%7 = icmp eq i64 %6, 0
br i1 %7, label %8, label %10
8: ; preds = %0
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0))
br label %15
10: ; preds = %0
%11 = load i32, i32* %1
%12 = load i32, i32* %2
%13 = add nsw i32 %12, %11
%14 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %13)
br label %15
15: ; preds = %10, %8
ret i32 0
}