#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 atoi(char const *);
int /*<<< orphan*/ finalize(int);
int initialize(char const *, int);
int /*<<< orphan*/ locate(int, int, int /*<<< orphan*/);
int /*<<< orphan*/ print(int, char *);
int /*<<< orphan*/ printf(char *, ...);
int main(int argc, const char *argv[]) {
  if (argc != 3) {
    printf("Ejemplo: LCD /dev/i2c-0 32\r\n");
    return -1;
  }
  printf("Using device %s 0x%x\r\n", argv[1], atoi(argv[2]));
  int file = initialize(argv[1], atoi(argv[2]));
  locate(file, 0, 0);
  print(file, "Linea 1");
  locate(file, 1, 0);
  print(file, "Linea 2");
  finalize(file);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x3,-0x8(%rbp)
je     119a <main+0x3a>
lea    0xe79(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0xffffffff,-0x4(%rbp)
jmp    122f <main+0xcf>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rax
mov    %rax,-0x28(%rbp)
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rdi
call   1080 <atoi@plt>
mov    -0x28(%rbp),%rsi
mov    %eax,%edx
lea    0xe5d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rax
mov    %rax,-0x20(%rbp)
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rdi
call   1080 <atoi@plt>
mov    -0x20(%rbp),%rdi
mov    %eax,%esi
call   1060 <initialize@plt>
mov    %eax,-0x14(%rbp)
mov    -0x14(%rbp),%edi
xor    %edx,%edx
mov    %edx,%esi
call   1070 <locate@plt>
mov    -0x14(%rbp),%edi
lea    0xe30(%rip),%rsi
call   1050 <print@plt>
mov    -0x14(%rbp),%edi
mov    $0x1,%esi
xor    %edx,%edx
call   1070 <locate@plt>
mov    -0x14(%rbp),%edi
lea    0xe1a(%rip),%rsi
call   1050 <print@plt>
mov    -0x14(%rbp),%edi
call   1040 <finalize@plt>
mov    -0x4(%rbp),%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r14
push   %rbx
cmp    $0x3,%edi
jne    11f6 <main+0x86>
mov    %rsi,%rbx
mov    0x8(%rsi),%rbp
mov    0x10(%rsi),%rdi
call   1090 <atoi@plt>
lea    0xe70(%rip),%rdi
xor    %r14d,%r14d
mov    %rbp,%rsi
mov    %eax,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x8(%rbx),%rbp
mov    0x10(%rbx),%rdi
call   1090 <atoi@plt>
mov    %rbp,%rdi
mov    %eax,%esi
call   1070 <initialize@plt>
mov    %eax,%ebx
mov    %eax,%edi
xor    %esi,%esi
xor    %edx,%edx
call   1080 <locate@plt>
lea    0xe4d(%rip),%rsi
mov    %ebx,%edi
call   1060 <print@plt>
mov    %ebx,%edi
mov    $0x1,%esi
xor    %edx,%edx
call   1080 <locate@plt>
lea    0xe39(%rip),%rsi
mov    %ebx,%edi
call   1060 <print@plt>
mov    %ebx,%edi
call   1050 <finalize@plt>
jmp    1208 <main+0x98>
lea    0xe2a(%rip),%rdi
call   1030 <puts@plt>
mov    $0xffffffff,%r14d
mov    %r14d,%eax
pop    %rbx
pop    %r14
pop    %rbp
ret

LLVM IR (-O0):
@.str = [29 x i8] c"Ejemplo: LCD /dev/i2c-0 32\0D\0A\00"
@.str.1 = [23 x i8] c"Using device %s 0x%x\0D\0A\00"
@.str.2 = [8 x i8] c"Linea 1\00"
@.str.3 = [8 x i8] c"Linea 2\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, 3
br i1 %8, label %9, label %11
9: ; preds = %2
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str, i64 0, i64 0))
store i32 -1, i32* %3
br label %38
11: ; preds = %2
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 1
%14 = load i8*, i8** %13
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 2
%17 = load i8*, i8** %16
%18 = call i32 @atoi(i8* %17)
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i8* %14, i32 %18)
%20 = load i8**, i8*** %5
%21 = getelementptr inbounds i8*, i8** %20, i64 1
%22 = load i8*, i8** %21
%23 = load i8**, i8*** %5
%24 = getelementptr inbounds i8*, i8** %23, i64 2
%25 = load i8*, i8** %24
%26 = call i32 @atoi(i8* %25)
%27 = call i32 @initialize(i8* %22, i32 %26)
store i32 %27, i32* %6
%28 = load i32, i32* %6
%29 = call i32 @locate(i32 %28, i32 0, i32 0)
%30 = load i32, i32* %6
%31 = call i32 @print(i32 %30, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.2, i64 0, i64 0))
%32 = load i32, i32* %6
%33 = call i32 @locate(i32 %32, i32 1, i32 0)
%34 = load i32, i32* %6
%35 = call i32 @print(i32 %34, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0))
%36 = load i32, i32* %6
%37 = call i32 @finalize(i32 %36)
br label %38
38: ; preds = %11, %9
%39 = load i32, i32* %3
ret i32 %39
}

LLVM IR (-O2):
@.str.1 = [23 x i8] c"Using device %s 0x%x\0D\0A\00"
@.str.2 = [8 x i8] c"Linea 1\00"
@.str.3 = [8 x i8] c"Linea 2\00"
@str = [28 x i8] c"Ejemplo: LCD /dev/i2c-0 32\0D\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 3
br i1 %3, label %6, label %4
4: ; preds = %2
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([28 x i8], [28 x i8]* @str, i64 0, i64 0))
br label %22
6: ; preds = %2
%7 = getelementptr inbounds i8*, i8** %1, i64 1
%8 = load i8*, i8** %7
%9 = getelementptr inbounds i8*, i8** %1, i64 2
%10 = load i8*, i8** %9
%11 = tail call i32 @atoi(i8* %10)
%12 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i8* %8, i32 %11)
%13 = load i8*, i8** %7
%14 = load i8*, i8** %9
%15 = tail call i32 @atoi(i8* %14)
%16 = tail call i32 @initialize(i8* %13, i32 %15)
%17 = tail call i32 @locate(i32 %16, i32 0, i32 0)
%18 = tail call i32 @print(i32 %16, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.2, i64 0, i64 0))
%19 = tail call i32 @locate(i32 %16, i32 1, i32 0)
%20 = tail call i32 @print(i32 %16, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0))
%21 = tail call i32 @finalize(i32 %16)
br label %22
22: ; preds = %6, %4
%23 = phi i32 [ -1, %4 ], [ 0, %6 ]
ret i32 %23
}