#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 */
typedef int /*<<< orphan*/ FILE;

/* Variables and functions */
int atoi(char *);
int /*<<< orphan*/ dump_ram(int, int /*<<< orphan*/ *);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ printf(char *);
int main(int argc, char **argv) {
  if (argc != 2) {
    printf("what happened to the pid?\n");
    return 1;
  }
  FILE *out_file = fopen("/tmp/ramdump", "w");
  int pid = atoi(argv[1]);
  dump_ram(pid, out_file);
  fclose(out_file);
  return 0;
}


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     1188 <main+0x38>
lea    0xe89(%rip),%rdi
call   1040 <printf@plt>
movl   $0x1,-0x4(%rbp)
jmp    11cb <main+0x7b>
lea    0xe8c(%rip),%rdi
lea    0xe92(%rip),%rsi
call   1050 <fopen@plt>
mov    %rax,-0x18(%rbp)
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1060 <atoi@plt>
mov    %eax,-0x1c(%rbp)
mov    -0x1c(%rbp),%edi
mov    -0x18(%rbp),%rsi
call   1070 <dump_ram@plt>
mov    -0x18(%rbp),%rdi
call   1030 <fclose@plt>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
cmp    $0x2,%edi
jne    1191 <main+0x41>
mov    %rsi,%r14
lea    0xe9d(%rip),%rdi
lea    0xea3(%rip),%rsi
call   1050 <fopen@plt>
mov    %rax,%rbx
mov    0x8(%r14),%rdi
call   1060 <atoi@plt>
mov    %eax,%edi
mov    %rbx,%rsi
call   1070 <dump_ram@plt>
mov    %rbx,%rdi
call   1040 <fclose@plt>
xor    %eax,%eax
jmp    11a2 <main+0x52>
lea    0xe77(%rip),%rdi
call   1030 <puts@plt>
mov    $0x1,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [27 x i8] c"what happened to the pid?\0A\00"
@.str.1 = [13 x i8] c"/tmp/ramdump\00"
@.str.2 = [2 x i8] c"w\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32*
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = load i32, i32* %4
%9 = icmp ne i32 %8, 2
br i1 %9, label %10, label %12
10: ; preds = %2
%11 = call i32 @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
store i32 1, i32* %3
br label %23
12: ; preds = %2
%13 = call i32* @fopen(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
store i32* %13, i32** %6
%14 = load i8**, i8*** %5
%15 = getelementptr inbounds i8*, i8** %14, i64 1
%16 = load i8*, i8** %15
%17 = call i32 @atoi(i8* %16)
store i32 %17, i32* %7
%18 = load i32, i32* %7
%19 = load i32*, i32** %6
%20 = call i32 @dump_ram(i32 %18, i32* %19)
%21 = load i32*, i32** %6
%22 = call i32 @fclose(i32* %21)
store i32 0, i32* %3
br label %23
23: ; preds = %12, %10
%24 = load i32, i32* %3
ret i32 %24
}

LLVM IR (-O2):
@.str.1 = [13 x i8] c"/tmp/ramdump\00"
@.str.2 = [2 x i8] c"w\00"
@str = [26 x i8] c"what happened to the pid?\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 ([26 x i8], [26 x i8]* @str, i64 0, i64 0))
br label %13
6: ; preds = %2
%7 = tail call i32* @fopen(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%8 = getelementptr inbounds i8*, i8** %1, i64 1
%9 = load i8*, i8** %8
%10 = tail call i32 @atoi(i8* %9)
%11 = tail call i32 @dump_ram(i32 %10, i32* %7)
%12 = tail call i32 @fclose(i32* %7)
br label %13
13: ; preds = %6, %4
%14 = phi i32 [ 1, %4 ], [ 0, %6 ]
ret i32 %14
}