#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*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fgets(char *, int, int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ printf(char *, char *);
int main(void) {
  FILE *fp;
  char *fname = "english.txt";
  char s[100];
  fp = fopen(fname, "r");
  while (fgets(s, 100, fp) != NULL) {
    printf("%s", s);
  }
  fclose(fp);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x80,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xea7(%rip),%rax
mov    %rax,-0x18(%rbp)
mov    -0x18(%rbp),%rdi
lea    0xea4(%rip),%rsi
call   1060 <fopen@plt>
mov    %rax,-0x10(%rbp)
lea    -0x80(%rbp),%rdi
mov    -0x10(%rbp),%rdx
mov    $0x64,%esi
call   1050 <fgets@plt>
cmp    $0x0,%rax
je     11a2 <main+0x62>
lea    -0x80(%rbp),%rsi
lea    0xe76(%rip),%rdi
call   1040 <printf@plt>
jmp    1171 <main+0x31>
mov    -0x10(%rbp),%rdi
call   1030 <fclose@plt>
mov    -0x4(%rbp),%eax
add    $0x80,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
sub    $0x70,%rsp
lea    0xeb0(%rip),%rdi
lea    0xeb5(%rip),%rsi
call   1060 <fopen@plt>
mov    %rax,%r15
mov    %rsp,%rdi
mov    $0x64,%esi
mov    %rax,%rdx
call   1050 <fgets@plt>
test   %rax,%rax
je     11a0 <main+0x60>
lea    0xe93(%rip),%r14
mov    %rsp,%rbx
xchg   %ax,%ax
mov    %r14,%rdi
mov    %rbx,%rsi
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x64,%esi
mov    %r15,%rdx
call   1050 <fgets@plt>
test   %rax,%rax
jne    1180 <main+0x40>
mov    %r15,%rdi
call   1030 <fclose@plt>
xor    %eax,%eax
add    $0x70,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [12 x i8] c"english.txt\00"
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [3 x i8] c"%s\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32*
%3 = alloca i8*
%4 = alloca [100 x i8]
store i32 0, i32* %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i8** %3
%5 = load i8*, i8** %3
%6 = call i32* @fopen(i8* %5, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
store i32* %6, i32** %2
br label %7
7: ; preds = %12, %0
%8 = getelementptr inbounds [100 x i8], [100 x i8]* %4, i64 0, i64 0
%9 = load i32*, i32** %2
%10 = call i32* @fgets(i8* %8, i32 100, i32* %9)
%11 = icmp ne i32* %10, null
br i1 %11, label %12, label %15
12: ; preds = %7
%13 = getelementptr inbounds [100 x i8], [100 x i8]* %4, i64 0, i64 0
%14 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i8* %13)
br label %7
15: ; preds = %7
%16 = load i32*, i32** %2
%17 = call i32 @fclose(i32* %16)
%18 = load i32, i32* %1
ret i32 %18
}

LLVM IR (-O2):
@.str = [12 x i8] c"english.txt\00"
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [3 x i8] c"%s\00"
define i32 @main() {
%1 = alloca [100 x i8]
%2 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%3 = tail call i32* @fopen(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%4 = call i32* @fgets(i8* %2, i32 100, i32* %3)
%5 = icmp eq i32* %4, null
br i1 %5, label %10, label %6
6: ; preds = %0, %6
%7 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i8* %2)
%8 = call i32* @fgets(i8* %2, i32 100, i32* %3)
%9 = icmp eq i32* %8, null
br i1 %9, label %10, label %6
10: ; preds = %6, %0
%11 = call i32 @fclose(i32* %3)
ret i32 0
}