#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 /*<<< orphan*/ EXIT_FAILURE;
int /*<<< orphan*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ readlog(int /*<<< orphan*/ *, char *);
int main(int argc, char *argv[]) {
  int i;
  FILE *fp;
  for (i = 1; i < argc; i++) {
    if ((fp = fopen(argv[i], "r")) == NULL) {
      perror("file open error!!\n");
      exit(EXIT_FAILURE);
    }
    readlog(fp, argv[i]);
    fclose(fp);
  }
  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)
movl   $0x1,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    11e5 <main+0x95>
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rdi
lea    0xe74(%rip),%rsi
call   1050 <fopen@plt>
mov    %rax,-0x20(%rbp)
cmp    $0x0,%rax
jne    11b9 <main+0x69>
lea    0xe5c(%rip),%rdi
call   1060 <perror@plt>
mov    0x2e2e(%rip),%rax
mov    (%rax),%edi
call   1070 <exit@plt>
mov    -0x20(%rbp),%rdi
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rsi
call   1030 <readlog@plt>
mov    -0x20(%rbp),%rdi
call   1040 <fclose@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    116d <main+0x1d>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
cmp    $0x2,%edi
jl     11b1 <main+0x61>
mov    %rsi,%r15
mov    %edi,%r12d
mov    $0x1,%r13d
lea    0xe8f(%rip),%r14
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
mov    (%r15,%r13,8),%rdi
mov    %r14,%rsi
call   1050 <fopen@plt>
test   %rax,%rax
je     11bd <main+0x6d>
mov    %rax,%rbx
mov    (%r15,%r13,8),%rsi
mov    %rax,%rdi
call   1030 <readlog@plt>
mov    %rbx,%rdi
call   1040 <fclose@plt>
add    $0x1,%r13
cmp    %r13,%r12
jne    1180 <main+0x30>
xor    %eax,%eax
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
ret
lea    0xe3e(%rip),%rdi
call   1060 <perror@plt>
mov    0x2e10(%rip),%rax
mov    (%rax),%edi
call   1070 <exit@plt>

LLVM IR (-O0):
@.str = [2 x i8] c"r\00"
@.str.1 = [19 x i8] c"file open error!!\0A\00"
@EXIT_FAILURE = global i32 0
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
store i32 1, i32* %6
br label %8
8: ; preds = %34, %2
%9 = load i32, i32* %6
%10 = load i32, i32* %4
%11 = icmp slt i32 %9, %10
br i1 %11, label %12, label %37
12: ; preds = %8
%13 = load i8**, i8*** %5
%14 = load i32, i32* %6
%15 = sext i32 %14 to i64
%16 = getelementptr inbounds i8*, i8** %13, i64 %15
%17 = load i8*, i8** %16
%18 = call i32* @fopen(i8* %17, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
store i32* %18, i32** %7
%19 = icmp eq i32* %18, null
br i1 %19, label %20, label %24
20: ; preds = %12
%21 = call i32 @perror(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0))
%22 = load i32, i32* @EXIT_FAILURE
%23 = call i32 @exit(i32 %22)
unreachable
24: ; preds = %12
%25 = load i32*, i32** %7
%26 = load i8**, i8*** %5
%27 = load i32, i32* %6
%28 = sext i32 %27 to i64
%29 = getelementptr inbounds i8*, i8** %26, i64 %28
%30 = load i8*, i8** %29
%31 = call i32 @readlog(i32* %25, i8* %30)
%32 = load i32*, i32** %7
%33 = call i32 @fclose(i32* %32)
br label %34
34: ; preds = %24
%35 = load i32, i32* %6
%36 = add nsw i32 %35, 1
store i32 %36, i32* %6
br label %8
37: ; preds = %8
ret i32 0
}

LLVM IR (-O2):
@.str = [2 x i8] c"r\00"
@.str.1 = [19 x i8] c"file open error!!\0A\00"
@EXIT_FAILURE = global i32 0
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp sgt i32 %0, 1
br i1 %3, label %4, label %22
4: ; preds = %2
%5 = zext i32 %0 to i64
br label %6
6: ; preds = %4, %16
%7 = phi i64 [ 1, %4 ], [ %20, %16 ]
%8 = getelementptr inbounds i8*, i8** %1, i64 %7
%9 = load i8*, i8** %8
%10 = tail call i32* @fopen(i8* %9, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%11 = icmp eq i32* %10, null
br i1 %11, label %12, label %16
12: ; preds = %6
%13 = tail call i32 @perror(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0))
%14 = load i32, i32* @EXIT_FAILURE
%15 = tail call i32 @exit(i32 %14)
unreachable
16: ; preds = %6
%17 = load i8*, i8** %8
%18 = tail call i32 @readlog(i32* %10, i8* %17)
%19 = tail call i32 @fclose(i32* %10)
%20 = add nuw nsw i64 %7, 1
%21 = icmp eq i64 %20, %5
br i1 %21, label %22, label %6
22: ; preds = %16, %2
ret i32 0
}