#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*/ fopen(char *, char *);
int /*<<< orphan*/ run(int /*<<< orphan*/);
int /*<<< orphan*/ stdin;
int main(int argc, char *argv[]) {
  int i;
  if (argc == 1) {
    run(stdin);
  } else {
    for (i = 1; i < argc; i++) {
      run(fopen(argv[i], "r"));
    }
  }
  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   $0x1,-0x8(%rbp)
jne    1153 <main+0x33>
mov    0x2ea1(%rip),%rax
mov    (%rax),%edi
call   1030 <run@plt>
jmp    1198 <main+0x78>
movl   $0x1,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    1193 <main+0x73>
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rdi
lea    0xe87(%rip),%rsi
call   1040 <fopen@plt>
mov    %eax,%edi
call   1030 <run@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    115a <main+0x3a>
jmp    1198 <main+0x78>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
cmp    $0x1,%edi
jne    113d <main+0x1d>
mov    0x2eb4(%rip),%rax
mov    (%rax),%edi
call   1030 <run@plt>
jmp    117c <main+0x5c>
jle    117c <main+0x5c>
mov    %rsi,%r15
mov    %edi,%r12d
mov    $0x1,%ebx
lea    0xeaf(%rip),%r14
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
mov    (%r15,%rbx,8),%rdi
mov    %r14,%rsi
call   1040 <fopen@plt>
mov    %eax,%edi
call   1030 <run@plt>
add    $0x1,%rbx
cmp    %rbx,%r12
jne    1160 <main+0x40>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@stdin = global i32 0
@.str = [2 x i8] c"r\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 eq i32 %7, 1
br i1 %8, label %9, label %12
9: ; preds = %2
%10 = load i32, i32* @stdin
%11 = call i32 @run(i32 %10)
br label %29
12: ; preds = %2
store i32 1, i32* %6
br label %13
13: ; preds = %25, %12
%14 = load i32, i32* %6
%15 = load i32, i32* %4
%16 = icmp slt i32 %14, %15
br i1 %16, label %17, label %28
17: ; preds = %13
%18 = load i8**, i8*** %5
%19 = load i32, i32* %6
%20 = sext i32 %19 to i64
%21 = getelementptr inbounds i8*, i8** %18, i64 %20
%22 = load i8*, i8** %21
%23 = call i32 @fopen(i8* %22, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%24 = call i32 @run(i32 %23)
br label %25
25: ; preds = %17
%26 = load i32, i32* %6
%27 = add nsw i32 %26, 1
store i32 %27, i32* %6
br label %13
28: ; preds = %13
br label %29
29: ; preds = %28, %9
ret i32 0
}

LLVM IR (-O2):
@stdin = global i32 0
@.str = [2 x i8] c"r\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 1
br i1 %3, label %8, label %4
4: ; preds = %2
%5 = icmp sgt i32 %0, 1
br i1 %5, label %6, label %19
6: ; preds = %4
%7 = zext i32 %0 to i64
br label %11
8: ; preds = %2
%9 = load i32, i32* @stdin
%10 = tail call i32 @run(i32 %9)
br label %19
11: ; preds = %6, %11
%12 = phi i64 [ 1, %6 ], [ %17, %11 ]
%13 = getelementptr inbounds i8*, i8** %1, i64 %12
%14 = load i8*, i8** %13
%15 = tail call i32 @fopen(i8* %14, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%16 = tail call i32 @run(i32 %15)
%17 = add nuw nsw i64 %12, 1
%18 = icmp eq i64 %17, %7
br i1 %18, label %19, label %11
19: ; preds = %11, %4, %8
ret i32 0
}