#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*/ *fopen(char const *, char *);
int /*<<< orphan*/ perror(char *);
int print_summary(int /*<<< orphan*/ *);
int main(int argc, char const *argv[]) {
  if (argc != 2) {
    perror("Usage: summary <file>");
    return 1;
  }
  FILE *fp;
  if ((fp = fopen(argv[1], "rb")) == 0) {
    perror("Cannot find log file");
    return 2;
  }
  return print_summary(fp);
}


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   $0x2,-0x8(%rbp)
je     1168 <main+0x38>
lea    0xea9(%rip),%rdi
call   1040 <perror@plt>
movl   $0x1,-0x4(%rbp)
jmp    11ae <main+0x7e>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
lea    0xe9f(%rip),%rsi
call   1030 <fopen@plt>
mov    %rax,-0x18(%rbp)
cmp    $0x0,%rax
jne    11a2 <main+0x72>
lea    0xe88(%rip),%rdi
call   1040 <perror@plt>
movl   $0x2,-0x4(%rbp)
jmp    11ae <main+0x7e>
mov    -0x18(%rbp),%rdi
call   1050 <print_summary@plt>
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
cmp    $0x2,%edi
jne    1154 <main+0x24>
mov    0x8(%rsi),%rdi
lea    0xed5(%rip),%rsi
call   1030 <fopen@plt>
test   %rax,%rax
je     1167 <main+0x37>
mov    %rax,%rdi
pop    %rax
jmp    1050 <print_summary@plt>
lea    0xea5(%rip),%rdi
call   1040 <perror@plt>
mov    $0x1,%eax
pop    %rcx
ret
lea    0xeab(%rip),%rdi
call   1040 <perror@plt>
mov    $0x2,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [22 x i8] c"Usage: summary <file>\00"
@.str.1 = [3 x i8] c"rb\00"
@.str.2 = [21 x i8] c"Cannot find log file\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 ne i32 %7, 2
br i1 %8, label %9, label %11
9: ; preds = %2
%10 = call i32 @perror(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0))
store i32 1, i32* %3
br label %22
11: ; preds = %2
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 1
%14 = load i8*, i8** %13
%15 = call i32* @fopen(i8* %14, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
store i32* %15, i32** %6
%16 = icmp eq i32* %15, null
br i1 %16, label %17, label %19
17: ; preds = %11
%18 = call i32 @perror(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.2, i64 0, i64 0))
store i32 2, i32* %3
br label %22
19: ; preds = %11
%20 = load i32*, i32** %6
%21 = call i32 @print_summary(i32* %20)
store i32 %21, i32* %3
br label %22
22: ; preds = %19, %17, %9
%23 = load i32, i32* %3
ret i32 %23
}

LLVM IR (-O2):
@.str = [22 x i8] c"Usage: summary <file>\00"
@.str.1 = [3 x i8] c"rb\00"
@.str.2 = [21 x i8] c"Cannot find log file\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %6, label %4
4: ; preds = %2
%5 = tail call i32 @perror(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0))
br label %15
6: ; preds = %2
%7 = getelementptr inbounds i8*, i8** %1, i64 1
%8 = load i8*, i8** %7
%9 = tail call i32* @fopen(i8* %8, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%10 = icmp eq i32* %9, null
br i1 %10, label %11, label %13
11: ; preds = %6
%12 = tail call i32 @perror(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.2, i64 0, i64 0))
br label %15
13: ; preds = %6
%14 = tail call i32 @print_summary(i32* %9)
br label %15
15: ; preds = %11, %13, %4
%16 = phi i32 [ 1, %4 ], [ 2, %11 ], [ %14, %13 ]
ret i32 %16
}