#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(int);
int /*<<< orphan*/ free(char *);
int fscanf(int /*<<< orphan*/ *, char *, int *);
scalar_t__ malloc(scalar_t__);
int /*<<< orphan*/ pclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *popen(char *, char *);
int /*<<< orphan*/ sprintf(char *, char *, char const *);
scalar_t__ strlen(char const *);
int getFileRowsNumber(const char *filename) {
  char *sys = (char *)malloc(strlen(filename) + 10);
  sprintf(sys, "wc -l %s", filename);
  FILE *fp = popen(sys, "r");
  int n;
  if (fscanf(fp, "%d", &n) != 1)
    exit(1);
  pclose(fp);
  free(sys);
  return n;
}


x86 assembly (clang, -O0):
<getFileRowsNumber>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rdi
call   1040 <strlen@plt>
mov    %rax,%rdi
add    $0xa,%rdi
call   1070 <malloc@plt>
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rdi
mov    -0x8(%rbp),%rdx
lea    0xe4c(%rip),%rsi
call   1090 <sprintf@plt>
mov    -0x10(%rbp),%rdi
lea    0xe45(%rip),%rsi
call   1080 <popen@plt>
mov    %rax,-0x18(%rbp)
mov    -0x18(%rbp),%rdi
lea    0xe33(%rip),%rsi
lea    -0x1c(%rbp),%rdx
call   1060 <fscanf@plt>
cmp    $0x1,%eax
je     11f4 <getFileRowsNumber+0x74>
mov    $0x1,%edi
call   10a0 <exit@plt>
mov    -0x18(%rbp),%rdi
call   1050 <pclose@plt>
mov    -0x10(%rbp),%rdi
call   1030 <free@plt>
mov    -0x1c(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<getFileRowsNumber>:
push   %r14
push   %rbx
push   %rax
mov    %rdi,%rbx
call   1040 <strlen@plt>
lea    0xa(%rax),%rdi
call   1070 <malloc@plt>
mov    %rax,%r14
lea    0xe61(%rip),%rsi
mov    %rax,%rdi
mov    %rbx,%rdx
call   1090 <sprintf@plt>
lea    0xe58(%rip),%rsi
mov    %r14,%rdi
call   1080 <popen@plt>
mov    %rax,%rbx
lea    0xe48(%rip),%rsi
lea    0x4(%rsp),%rdx
mov    %rax,%rdi
call   1060 <fscanf@plt>
cmp    $0x1,%eax
jne    11f1 <getFileRowsNumber+0x71>
mov    %rbx,%rdi
call   1050 <pclose@plt>
mov    %r14,%rdi
call   1030 <free@plt>
mov    0x4(%rsp),%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret
mov    $0x1,%edi
call   10a0 <exit@plt>

LLVM IR (-O0):
@.str = [9 x i8] c"wc -l %s\00"
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [3 x i8] c"%d\00"
define i32 @getFileRowsNumber(i8* %0) {
%2 = alloca i8*
%3 = alloca i8*
%4 = alloca i32*
%5 = alloca i32
store i8* %0, i8** %2
%6 = load i8*, i8** %2
%7 = call i64 @strlen(i8* %6)
%8 = add nsw i64 %7, 10
%9 = call i64 @malloc(i64 %8)
%10 = inttoptr i64 %9 to i8*
store i8* %10, i8** %3
%11 = load i8*, i8** %3
%12 = load i8*, i8** %2
%13 = call i32 @sprintf(i8* %11, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i8* %12)
%14 = load i8*, i8** %3
%15 = call i32* @popen(i8* %14, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
store i32* %15, i32** %4
%16 = load i32*, i32** %4
%17 = call i32 @fscanf(i32* %16, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %5)
%18 = icmp ne i32 %17, 1
br i1 %18, label %19, label %21
19: ; preds = %1
%20 = call i32 @exit(i32 1)
unreachable
21: ; preds = %1
%22 = load i32*, i32** %4
%23 = call i32 @pclose(i32* %22)
%24 = load i8*, i8** %3
%25 = call i32 @free(i8* %24)
%26 = load i32, i32* %5
ret i32 %26
}

LLVM IR (-O2):
@.str = [9 x i8] c"wc -l %s\00"
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [3 x i8] c"%d\00"
define i32 @getFileRowsNumber(i8* %0) {
%2 = alloca i32
%3 = tail call i64 @strlen(i8* dereferenceable(1) %0)
%4 = add nsw i64 %3, 10
%5 = tail call i64 @malloc(i64 %4)
%6 = inttoptr i64 %5 to i8*
%7 = tail call i32 @sprintf(i8* dereferenceable(1) %6, i8* dereferenceable(1) getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i8* %0)
%8 = tail call i32* @popen(i8* %6, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%9 = bitcast i32* %2 to i8*
%10 = call i32 @fscanf(i32* %8, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %2)
%11 = icmp eq i32 %10, 1
br i1 %11, label %14, label %12
12: ; preds = %1
%13 = call i32 @exit(i32 1)
unreachable
14: ; preds = %1
%15 = call i32 @pclose(i32* %8)
%16 = call i32 @free(i8* %6)
%17 = load i32, i32* %2
ret i32 %17
}