#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*/ err_quit(char *);
int /*<<< orphan*/ printf(char *);
int main(int argc, char **argv) {
  if (argc != 2) {
    err_quit("usage: prog <dirname>");
  }
  printf("no symbol for ARG_MAX\n");
  printf("no symbol for _SC_ARG_MAX\n");
  printf("no symbol for MAX_CANON\n");
  printf("no symbol for _PC_MAX_CANON\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x2,-0x8(%rbp)
je     114c <main+0x2c>
lea    0xeb9(%rip),%rdi
call   1040 <err_quit@plt>
lea    0xec3(%rip),%rdi
call   1030 <printf@plt>
lea    0xece(%rip),%rdi
call   1030 <printf@plt>
lea    0xedd(%rip),%rdi
call   1030 <printf@plt>
lea    0xeea(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
cmp    $0x2,%edi
je     1132 <main+0x12>
lea    0xed3(%rip),%rdi
call   1040 <err_quit@plt>
lea    0xedd(%rip),%rdi
call   1030 <puts@plt>
lea    0xee7(%rip),%rdi
call   1030 <puts@plt>
lea    0xef5(%rip),%rdi
call   1030 <puts@plt>
lea    0xf01(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [22 x i8] c"usage: prog <dirname>\00"
@.str.1 = [23 x i8] c"no symbol for ARG_MAX\0A\00"
@.str.2 = [27 x i8] c"no symbol for _SC_ARG_MAX\0A\00"
@.str.3 = [25 x i8] c"no symbol for MAX_CANON\0A\00"
@.str.4 = [29 x i8] c"no symbol for _PC_MAX_CANON\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%6 = load i32, i32* %4
%7 = icmp ne i32 %6, 2
br i1 %7, label %8, label %10
8: ; preds = %2
%9 = call i32 @err_quit(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0))
br label %10
10: ; preds = %8, %2
%11 = call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0))
%12 = call i32 @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.2, i64 0, i64 0))
%13 = call i32 @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.3, i64 0, i64 0))
%14 = call i32 @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.4, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str = [22 x i8] c"usage: prog <dirname>\00"
@str = [22 x i8] c"no symbol for ARG_MAX\00"
@str.5 = [26 x i8] c"no symbol for _SC_ARG_MAX\00"
@str.6 = [24 x i8] c"no symbol for MAX_CANON\00"
@str.7 = [28 x i8] c"no symbol for _PC_MAX_CANON\00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %6, label %4
4: ; preds = %2
%5 = tail call i32 @err_quit(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0))
br label %6
6: ; preds = %4, %2
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @str, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @str.5, i64 0, i64 0))
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @str.6, i64 0, i64 0))
%10 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([28 x i8], [28 x i8]* @str.7, i64 0, i64 0))
ret i32 0
}