#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*/ max(int, int, int, int *);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *, int *, int *);
int main() {
  int n1, n2, n3, maxx;
  printf("Enter three numbers: ");
  scanf("%d %d %d", &n1, &n2, &n3);
  max(n1, n2, n3, &maxx);
  printf("Maximum: %d\n", maxx);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xec1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec9(%rip),%rdi
lea    -0x4(%rbp),%rsi
lea    -0x8(%rbp),%rdx
lea    -0xc(%rbp),%rcx
call   1050 <scanf@plt>
mov    -0x4(%rbp),%edi
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    -0x10(%rbp),%rcx
call   1040 <max@plt>
mov    -0x10(%rbp),%esi
lea    0xea5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
sub    $0x18,%rsp
lea    0xec5(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xecd(%rip),%rdi
lea    0x14(%rsp),%rsi
lea    0x10(%rsp),%rdx
lea    0xc(%rsp),%rcx
call   1050 <scanf@plt>
mov    0x14(%rsp),%edi
mov    0x10(%rsp),%esi
mov    0xc(%rsp),%edx
lea    0x8(%rsp),%rcx
call   1040 <max@plt>
mov    0x8(%rsp),%esi
lea    0xea1(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x18,%rsp
ret

LLVM IR (-O0):
@.str = [22 x i8] c"Enter three numbers: \00"
@.str.1 = [9 x i8] c"%d %d %d\00"
@.str.2 = [13 x i8] c"Maximum: %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.1, i64 0, i64 0), i32* %1, i32* %2, i32* %3)
%7 = load i32, i32* %1
%8 = load i32, i32* %2
%9 = load i32, i32* %3
%10 = call i32 @max(i32 %7, i32 %8, i32 %9, i32* %4)
%11 = load i32, i32* %4
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0), i32 %11)
ret i32 0
}

LLVM IR (-O2):
@.str = [22 x i8] c"Enter three numbers: \00"
@.str.1 = [9 x i8] c"%d %d %d\00"
@.str.2 = [13 x i8] c"Maximum: %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = bitcast i32* %1 to i8*
%6 = bitcast i32* %2 to i8*
%7 = bitcast i32* %3 to i8*
%8 = bitcast i32* %4 to i8*
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.1, i64 0, i64 0), i32* %1, i32* %2, i32* %3)
%11 = load i32, i32* %1
%12 = load i32, i32* %2
%13 = load i32, i32* %3
%14 = call i32 @max(i32 %11, i32 %12, i32 %13, i32* %4)
%15 = load i32, i32* %4
%16 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0), i32 %15)
ret i32 0
}