#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*/ EXIT_FAILURE;
int EXIT_SUCCESS;
int /*<<< orphan*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *);
int /*<<< orphan*/ printDir(char *);
int /*<<< orphan*/ stderr;
int main(int argc, char **argv) {
  if (argc != 2) {
    fprintf(stderr, "无效参数。使用说明：file_list <目录路径>\n");
    exit(EXIT_FAILURE);
  }
  printDir(argv[1]);
  return EXIT_SUCCESS;
}


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     1173 <main+0x43>
mov    0x2e89(%rip),%rax
mov    (%rax),%edi
lea    0xea0(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e6c(%rip),%rax
mov    (%rax),%edi
call   1050 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1040 <printDir@plt>
mov    0x2e49(%rip),%rax
mov    (%rax),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
cmp    $0x2,%edi
jne    114a <main+0x1a>
mov    0x8(%rsi),%rdi
call   1040 <printDir@plt>
mov    0x2e8a(%rip),%rax
mov    (%rax),%eax
pop    %rcx
ret
mov    0x2e8f(%rip),%rax
mov    (%rax),%edi
lea    0xea6(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e72(%rip),%rax
mov    (%rax),%edi
call   1050 <exit@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [56 x i8] c"\E6\97\A0\E6\95\88\E5\8F\82\E6\95\B0\E3\80\82\E4\BD\BF\E7\94\A8\E8\AF\B4\E6\98\8E\EF\BC\9Afile_list <\E7\9B\AE\E5\BD\95\E8\B7\AF\E5\BE\84>\0A\00"
@EXIT_FAILURE = global i32 0
@EXIT_SUCCESS = global i32 0
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 %13
8: ; preds = %2
%9 = load i32, i32* @stderr
%10 = call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([56 x i8], [56 x i8]* @.str, i64 0, i64 0))
%11 = load i32, i32* @EXIT_FAILURE
%12 = call i32 @exit(i32 %11)
unreachable
13: ; preds = %2
%14 = load i8**, i8*** %5
%15 = getelementptr inbounds i8*, i8** %14, i64 1
%16 = load i8*, i8** %15
%17 = call i32 @printDir(i8* %16)
%18 = load i32, i32* @EXIT_SUCCESS
ret i32 %18
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [56 x i8] c"\E6\97\A0\E6\95\88\E5\8F\82\E6\95\B0\E3\80\82\E4\BD\BF\E7\94\A8\E8\AF\B4\E6\98\8E\EF\BC\9Afile_list <\E7\9B\AE\E5\BD\95\E8\B7\AF\E5\BE\84>\0A\00"
@EXIT_FAILURE = global i32 0
@EXIT_SUCCESS = global i32 0
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %9, label %4
4: ; preds = %2
%5 = load i32, i32* @stderr
%6 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([56 x i8], [56 x i8]* @.str, i64 0, i64 0))
%7 = load i32, i32* @EXIT_FAILURE
%8 = tail call i32 @exit(i32 %7)
unreachable
9: ; preds = %2
%10 = getelementptr inbounds i8*, i8** %1, i64 1
%11 = load i8*, i8** %10
%12 = tail call i32 @printDir(i8* %11)
%13 = load i32, i32* @EXIT_SUCCESS
ret i32 %13
}