#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 */
char *get_cmdline_from_core(char *);
int /*<<< orphan*/ printf(char *, ...);
int main(int argc, char *argv[]) {
  char *cmd;
  if (argc != 2) {
    printf("no core file specified!\n");
    return 0;
  }
  cmd = get_cmdline_from_core(argv[1]);
  if (cmd)
    printf("%s\n", cmd);
  else
    printf("error\n");
  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     115a <main+0x3a>
lea    0xeb9(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x4(%rbp)
jmp    11a2 <main+0x82>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1040 <get_cmdline_from_core@plt>
mov    %rax,-0x18(%rbp)
cmpq   $0x0,-0x18(%rbp)
je     118d <main+0x6d>
mov    -0x18(%rbp),%rsi
lea    0xe98(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    119b <main+0x7b>
lea    0xe89(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
cmp    $0x2,%edi
jne    1139 <main+0x19>
mov    0x8(%rsi),%rdi
call   1040 <get_cmdline_from_core@plt>
test   %rax,%rax
je     1142 <main+0x22>
mov    %rax,%rdi
jmp    1149 <main+0x29>
lea    0xec6(%rip),%rdi
jmp    1149 <main+0x29>
lea    0xeb7(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [25 x i8] c"no core file specified!\0A\00"
@.str.1 = [4 x i8] c"%s\0A\00"
@.str.2 = [7 x i8] c"error\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i8*
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 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %3
br label %24
11: ; preds = %2
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 1
%14 = load i8*, i8** %13
%15 = call i8* @get_cmdline_from_core(i8* %14)
store i8* %15, i8** %6
%16 = load i8*, i8** %6
%17 = icmp ne i8* %16, null
br i1 %17, label %18, label %21
18: ; preds = %11
%19 = load i8*, i8** %6
%20 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* %19)
br label %23
21: ; preds = %11
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0))
br label %23
23: ; preds = %21, %18
store i32 0, i32* %3
br label %24
24: ; preds = %23, %9
%25 = load i32, i32* %3
ret i32 %25
}

LLVM IR (-O2):
@str = [6 x i8] c"error\00"
@str.3 = [24 x i8] c"no core file specified!\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 ([24 x i8], [24 x i8]* @str.3, i64 0, i64 0))
br label %15
6: ; preds = %2
%7 = getelementptr inbounds i8*, i8** %1, i64 1
%8 = load i8*, i8** %7
%9 = tail call i8* @get_cmdline_from_core(i8* %8)
%10 = icmp eq i8* %9, null
br i1 %10, label %13, label %11
11: ; preds = %6
%12 = tail call i32 @puts(i8* %9)
br label %15
13: ; preds = %6
%14 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @str, i64 0, i64 0))
br label %15
15: ; preds = %11, %13, %4
ret i32 0
}