#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*/ buffer;
typedef int /*<<< orphan*/ FILE;

/* Variables and functions */
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
scalar_t__ fgets(char *, int, int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ printf(char *, char *);
void consultarTxt(char *filename) {
  FILE *fp = fopen(filename, "r");
  char buffer[255];
  while (fgets(buffer, sizeof(buffer), fp)) {
    printf("%s\n", buffer);
  }
  fclose(fp);
}


x86 assembly (clang, -O0):
<consultarTxt>:
push   %rbp
mov    %rsp,%rbp
sub    $0x110,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rdi
lea    0xea6(%rip),%rsi
call   1060 <fopen@plt>
mov    %rax,-0x10(%rbp)
lea    -0x110(%rbp),%rdi
mov    -0x10(%rbp),%rdx
mov    $0xff,%esi
call   1050 <fgets@plt>
cmp    $0x0,%rax
je     119a <consultarTxt+0x5a>
lea    -0x110(%rbp),%rsi
lea    0xe72(%rip),%rdi
call   1040 <printf@plt>
jmp    1163 <consultarTxt+0x23>
mov    -0x10(%rbp),%rdi
call   1030 <fclose@plt>
add    $0x110,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<consultarTxt>:
push   %r15
push   %r14
push   %rbx
sub    $0x100,%rsp
lea    0xead(%rip),%rsi
call   1060 <fopen@plt>
mov    %rax,%r15
mov    %rsp,%rdi
mov    $0xff,%esi
mov    %rax,%rdx
call   1050 <fgets@plt>
test   %rax,%rax
je     11a0 <consultarTxt+0x60>
lea    0xe8b(%rip),%r14
mov    %rsp,%rbx
nopw   0x0(%rax,%rax,1)
mov    %r14,%rdi
mov    %rbx,%rsi
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0xff,%esi
mov    %r15,%rdx
call   1050 <fgets@plt>
test   %rax,%rax
jne    1180 <consultarTxt+0x40>
mov    %r15,%rdi
call   1030 <fclose@plt>
add    $0x100,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [2 x i8] c"r\00"
@.str.1 = [4 x i8] c"%s\0A\00"
define void @consultarTxt(i8* %0) {
%2 = alloca i8*
%3 = alloca i32*
%4 = alloca [255 x i8]
store i8* %0, i8** %2
%5 = load i8*, i8** %2
%6 = call i32* @fopen(i8* %5, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
store i32* %6, i32** %3
br label %7
7: ; preds = %12, %1
%8 = getelementptr inbounds [255 x i8], [255 x i8]* %4, i64 0, i64 0
%9 = load i32*, i32** %3
%10 = call i64 @fgets(i8* %8, i32 255, i32* %9)
%11 = icmp ne i64 %10, 0
br i1 %11, label %12, label %15
12: ; preds = %7
%13 = getelementptr inbounds [255 x i8], [255 x i8]* %4, i64 0, i64 0
%14 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* %13)
br label %7
15: ; preds = %7
%16 = load i32*, i32** %3
%17 = call i32 @fclose(i32* %16)
ret void
}

LLVM IR (-O2):
@.str = [2 x i8] c"r\00"
@.str.1 = [4 x i8] c"%s\0A\00"
define void @consultarTxt(i8* nocapture %0) {
%2 = alloca [255 x i8]
%3 = tail call i32* @fopen(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%4 = getelementptr inbounds [255 x i8], [255 x i8]* %2, i64 0, i64 0
%5 = call i64 @fgets(i8* %4, i32 255, i32* %3)
%6 = icmp eq i64 %5, 0
br i1 %6, label %11, label %7
7: ; preds = %1, %7
%8 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* %4)
%9 = call i64 @fgets(i8* %4, i32 255, i32* %3)
%10 = icmp eq i64 %9, 0
br i1 %10, label %11, label %7
11: ; preds = %7, %1
%12 = call i32 @fclose(i32* %3)
ret void
}