#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*/ executethestuff();
int getstring(char *);
int /*<<< orphan*/ printf(char *);
int main(int argc, char **argv) {
  if (argc != 2) {
    printf("Come on! I need an argument!\n");
    return 0;
  }
  int thereturn = getstring(argv[1]);
  printf("Is that all you got? I heard you can exploit!\n");
  if (thereturn)
    executethestuff();
  return 1;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x2,-0x8(%rbp)
je     1168 <main+0x38>
lea    0xea9(%rip),%rdi
call   1040 <printf@plt>
movl   $0x0,-0x4(%rbp)
jmp    119c <main+0x6c>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1030 <getstring@plt>
mov    %eax,-0x14(%rbp)
lea    0xe9f(%rip),%rdi
call   1040 <printf@plt>
cmpl   $0x0,-0x14(%rbp)
je     1195 <main+0x65>
mov    $0x0,%al
call   1050 <executethestuff@plt>
movl   $0x1,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %rbx
push   %rax
cmp    $0x2,%edi
jne    1161 <main+0x31>
mov    0x8(%rsi),%rdi
call   1030 <getstring@plt>
mov    %eax,%ebp
lea    0xeb6(%rip),%rdi
call   1040 <puts@plt>
mov    $0x1,%ebx
test   %ebp,%ebp
je     116f <main+0x3f>
xor    %eax,%eax
call   1050 <executethestuff@plt>
jmp    116f <main+0x3f>
lea    0xec6(%rip),%rdi
call   1040 <puts@plt>
xor    %ebx,%ebx
mov    %ebx,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [30 x i8] c"Come on! I need an argument!\0A\00"
@.str.1 = [47 x i8] c"Is that all you got? I heard you can exploit!\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%7 = load i32, i32* %4
%8 = icmp ne i32 %7, 2
br i1 %8, label %9, label %11
9: ; preds = %2
%10 = call i32 @printf(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %3
br label %22
11: ; preds = %2
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 1
%14 = load i8*, i8** %13
%15 = call i32 @getstring(i8* %14)
store i32 %15, i32* %6
%16 = call i32 @printf(i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str.1, i64 0, i64 0))
%17 = load i32, i32* %6
%18 = icmp ne i32 %17, 0
br i1 %18, label %19, label %21
19: ; preds = %11
%20 = call i32 (...) @executethestuff()
br label %21
21: ; preds = %19, %11
store i32 1, i32* %3
br label %22
22: ; preds = %21, %9
%23 = load i32, i32* %3
ret i32 %23
}

LLVM IR (-O2):
@str = [46 x i8] c"Is that all you got? I heard you can exploit!\00"
@str.2 = [29 x i8] c"Come on! I need an argument!\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %6, label %4
4: ; preds = %2
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([29 x i8], [29 x i8]* @str.2, i64 0, i64 0))
br label %14
6: ; preds = %2
%7 = getelementptr inbounds i8*, i8** %1, i64 1
%8 = load i8*, i8** %7
%9 = tail call i32 @getstring(i8* %8)
%10 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([46 x i8], [46 x i8]* @str, i64 0, i64 0))
%11 = icmp eq i32 %9, 0
br i1 %11, label %14, label %12
12: ; preds = %6
%13 = tail call i32 (...) @executethestuff()
br label %14
14: ; preds = %6, %12, %4
%15 = phi i32 [ 0, %4 ], [ 1, %12 ], [ 1, %6 ]
ret i32 %15
}