#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 strncmp(char *, char *, int);
int main(int argc, char *argv[]) {
  printf("%d\n", strncmp("123", "234", 2));
  printf("%d\n", strncmp("123", "987", 2));
  printf("%d\n", strncmp("123", "087", 2));
  printf("%d\n", strncmp("123", "187", 2));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
lea    0xec7(%rip),%rdi
lea    0xec4(%rip),%rsi
mov    $0x2,%edx
call   1030 <strncmp@plt>
mov    %eax,%esi
lea    0xea9(%rip),%rdi
call   1040 <printf@plt>
lea    0xea1(%rip),%rdi
lea    0xea2(%rip),%rsi
mov    $0x2,%edx
call   1030 <strncmp@plt>
mov    %eax,%esi
lea    0xe83(%rip),%rdi
call   1040 <printf@plt>
lea    0xe7b(%rip),%rdi
lea    0xe80(%rip),%rsi
mov    $0x2,%edx
call   1030 <strncmp@plt>
mov    %eax,%esi
lea    0xe5d(%rip),%rdi
call   1040 <printf@plt>
lea    0xe55(%rip),%rdi
lea    0xe5e(%rip),%rsi
mov    $0x2,%edx
call   1030 <strncmp@plt>
mov    %eax,%esi
lea    0xe37(%rip),%rdi
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
lea    0xed9(%rip),%r14
lea    0xed6(%rip),%rsi
mov    %r14,%rdi
mov    $0x2,%edx
call   1030 <strncmp@plt>
lea    0xeba(%rip),%rbx
mov    %rbx,%rdi
mov    %eax,%esi
call   1040 <printf@plt>
lea    0xeb5(%rip),%rsi
mov    %r14,%rdi
mov    $0x2,%edx
call   1030 <strncmp@plt>
mov    %rbx,%rdi
mov    %eax,%esi
call   1040 <printf@plt>
lea    0xe9b(%rip),%rsi
mov    %r14,%rdi
mov    $0x2,%edx
call   1030 <strncmp@plt>
mov    %rbx,%rdi
mov    %eax,%esi
call   1040 <printf@plt>
lea    0xe81(%rip),%rsi
mov    %r14,%rdi
mov    $0x2,%edx
call   1030 <strncmp@plt>
mov    %rbx,%rdi
mov    %eax,%esi
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [4 x i8] c"%d\0A\00"
@.str.1 = [4 x i8] c"123\00"
@.str.2 = [4 x i8] c"234\00"
@.str.3 = [4 x i8] c"987\00"
@.str.4 = [4 x i8] c"087\00"
@.str.5 = [4 x i8] c"187\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%6 = call i32 @strncmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 2)
%7 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %6)
%8 = call i32 @strncmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 2)
%9 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %8)
%10 = call i32 @strncmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0), i32 2)
%11 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %10)
%12 = call i32 @strncmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.5, i64 0, i64 0), i32 2)
%13 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %12)
ret i32 0
}

LLVM IR (-O2):
@.str = [4 x i8] c"%d\0A\00"
@.str.1 = [4 x i8] c"123\00"
@.str.2 = [4 x i8] c"234\00"
@.str.3 = [4 x i8] c"987\00"
@.str.4 = [4 x i8] c"087\00"
@.str.5 = [4 x i8] c"187\00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = tail call i32 @strncmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 2)
%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 @strncmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 2)
%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 @strncmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0), i32 2)
%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 @strncmp(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.5, i64 0, i64 0), i32 2)
%10 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %9)
ret i32 0
}