#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 /*<<< orphan*/ printf(char *, int);
int strend(char *, char *);
int main() {
  printf("%d\n", strend("Hello, world!", "world!"));
  printf("%d\n", strend("Hello", "HHHHHello"));
  printf("%d\n", strend("", "Hello"));
  printf("%d\n", strend("Hello", ""));
  printf("%d\n", strend("Hello", "Hello"));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xece(%rip),%rdi
lea    0xece(%rip),%rsi
call   1040 <strend@plt>
mov    %eax,%esi
lea    0xeb5(%rip),%rdi
call   1030 <printf@plt>
lea    0xebf(%rip),%rdi
lea    0xeb4(%rip),%rsi
call   1040 <strend@plt>
mov    %eax,%esi
lea    0xe94(%rip),%rdi
call   1030 <printf@plt>
lea    0xe8b(%rip),%rdi
lea    0xe97(%rip),%rsi
call   1040 <strend@plt>
mov    %eax,%esi
lea    0xe73(%rip),%rdi
call   1030 <printf@plt>
lea    0xe7d(%rip),%rdi
lea    0xe63(%rip),%rsi
call   1040 <strend@plt>
mov    %eax,%esi
lea    0xe52(%rip),%rdi
call   1030 <printf@plt>
lea    0xe5c(%rip),%rsi
mov    %rsi,%rdi
call   1040 <strend@plt>
mov    %eax,%esi
lea    0xe35(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
lea    0xed8(%rip),%rdi
lea    0xed8(%rip),%rsi
call   1040 <strend@plt>
lea    0xec1(%rip),%r14
mov    %r14,%rdi
mov    %eax,%esi
call   1030 <printf@plt>
lea    0xec6(%rip),%rbx
lea    0xebb(%rip),%rsi
mov    %rbx,%rdi
call   1040 <strend@plt>
mov    %r14,%rdi
mov    %eax,%esi
call   1030 <printf@plt>
lea    0xe93(%rip),%r15
mov    %r15,%rdi
mov    %rbx,%rsi
call   1040 <strend@plt>
mov    %r14,%rdi
mov    %eax,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    %r15,%rsi
call   1040 <strend@plt>
mov    %r14,%rdi
mov    %eax,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    %rbx,%rsi
call   1040 <strend@plt>
mov    %r14,%rdi
mov    %eax,%esi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [4 x i8] c"%d\0A\00"
@.str.1 = [14 x i8] c"Hello, world!\00"
@.str.2 = [7 x i8] c"world!\00"
@.str.3 = [6 x i8] c"Hello\00"
@.str.4 = [10 x i8] c"HHHHHello\00"
@.str.5 = [1 x i8] zeroinitializer
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call i32 @strend(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %2)
%4 = call i32 @strend(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %4)
%6 = call i32 @strend(i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.5, i64 0, i64 0), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %6)
%8 = call i32 @strend(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.5, i64 0, i64 0))
%9 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %8)
%10 = call i32 @strend(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
%11 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %10)
ret i32 0
}

LLVM IR (-O2):
@.str = [4 x i8] c"%d\0A\00"
@.str.1 = [14 x i8] c"Hello, world!\00"
@.str.2 = [7 x i8] c"world!\00"
@.str.3 = [6 x i8] c"Hello\00"
@.str.4 = [10 x i8] c"HHHHHello\00"
@.str.5 = [1 x i8] zeroinitializer
define i32 @main() {
%1 = tail call i32 @strend(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0))
%2 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %1)
%3 = tail call i32 @strend(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0))
%4 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %3)
%5 = tail call i32 @strend(i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.5, i64 0, i64 0), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
%6 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %5)
%7 = tail call i32 @strend(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.5, i64 0, i64 0))
%8 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %7)
%9 = tail call i32 @strend(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
%10 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %9)
ret i32 0
}