#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 get_line(char *, int);
int /*<<< orphan*/ printf(char *, ...);
int main() {
  int len;
  char line[1000];
  while ((len = get_line(line, 1000)) > 0) {
    printf("Line: %s\n", line);
    printf("Length: %d\n", len);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x3f0,%rsp
movl   $0x0,-0x4(%rbp)
lea    -0x3f0(%rbp),%rdi
mov    $0x3e8,%esi
call   1030 <get_line@plt>
mov    %eax,-0x8(%rbp)
cmp    $0x0,%eax
jle    117a <main+0x5a>
lea    -0x3f0(%rbp),%rsi
lea    0xea3(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x8(%rbp),%esi
lea    0xe9c(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
jmp    1132 <main+0x12>
xor    %eax,%eax
add    $0x3f0,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %rbx
sub    $0x3e8,%rsp
mov    %rsp,%rdi
mov    $0x3e8,%esi
call   1030 <get_line@plt>
test   %eax,%eax
jle    118c <main+0x6c>
mov    %eax,%ebp
lea    0xeb9(%rip),%r14
mov    %rsp,%rbx
lea    0xeb9(%rip),%r15
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
mov    %r14,%rdi
mov    %rbx,%rsi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r15,%rdi
mov    %ebp,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x3e8,%esi
call   1030 <get_line@plt>
mov    %eax,%ebp
test   %eax,%eax
jg     1160 <main+0x40>
xor    %eax,%eax
add    $0x3e8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [10 x i8] c"Line: %s\0A\00"
@.str.1 = [12 x i8] c"Length: %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca [1000 x i8]
store i32 0, i32* %1
br label %4
4: ; preds = %8, %0
%5 = getelementptr inbounds [1000 x i8], [1000 x i8]* %3, i64 0, i64 0
%6 = call i32 @get_line(i8* %5, i32 1000)
store i32 %6, i32* %2
%7 = icmp sgt i32 %6, 0
br i1 %7, label %8, label %13
8: ; preds = %4
%9 = getelementptr inbounds [1000 x i8], [1000 x i8]* %3, i64 0, i64 0
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), i8* %9)
%11 = load i32, i32* %2
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 %11)
br label %4
13: ; preds = %4
ret i32 0
}

LLVM IR (-O2):
@.str = [10 x i8] c"Line: %s\0A\00"
@.str.1 = [12 x i8] c"Length: %d\0A\00"
define i32 @main() {
%1 = alloca [1000 x i8]
%2 = getelementptr inbounds [1000 x i8], [1000 x i8]* %1, i64 0, i64 0
%3 = call i32 @get_line(i8* %2, i32 1000)
%4 = icmp sgt i32 %3, 0
br i1 %4, label %5, label %11
5: ; preds = %0, %5
%6 = phi i32 [ %9, %5 ], [ %3, %0 ]
%7 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), i8* %2)
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 %6)
%9 = call i32 @get_line(i8* %2, i32 1000)
%10 = icmp sgt i32 %9, 0
br i1 %10, label %5, label %11
11: ; preds = %5, %0
ret i32 0
}