#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 /*<<< orphan*/ swap(int *, int /*<<< orphan*/, int);
void main() {
  int a[] = {1, 2, 3};
  swap(a, 0, 1);
  for (int i = 0; i < 3; i++) {
    printf("%d ", a[i]);
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    0xed1(%rip),%rax
mov    %rax,-0xc(%rbp)
mov    0xecf(%rip),%eax
mov    %eax,-0x4(%rbp)
lea    -0xc(%rbp),%rdi
xor    %esi,%esi
mov    $0x1,%edx
call   1040 <swap@plt>
movl   $0x0,-0x10(%rbp)
cmpl   $0x3,-0x10(%rbp)
jge    117f <main+0x5f>
movslq -0x10(%rbp),%rax
mov    -0xc(%rbp,%rax,4),%esi
lea    0xea0(%rip),%rdi
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1153 <main+0x33>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
mov    0xedd(%rip),%eax
mov    %eax,0x8(%rsp)
mov    0xeca(%rip),%rax
mov    %rax,(%rsp)
mov    %rsp,%rdi
xor    %esi,%esi
mov    $0x1,%edx
call   1040 <swap@plt>
mov    (%rsp),%esi
lea    0xeb9(%rip),%rbx
mov    %rbx,%rdi
call   1030 <printf@plt>
mov    0x4(%rsp),%esi
mov    %rbx,%rdi
call   1030 <printf@plt>
mov    0x8(%rsp),%esi
mov    %rbx,%rdi
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@__const.main.a = [3 x i32] [i32 1, i32 2, i32 3]
@.str = [4 x i8] c"%d \00"
define void @main() {
%1 = alloca [3 x i32]
%2 = alloca i32
%3 = bitcast [3 x i32]* %1 to i8*
%4 = getelementptr inbounds [3 x i32], [3 x i32]* %1, i64 0, i64 0
%5 = call i32 @swap(i32* %4, i32 0, i32 1)
store i32 0, i32* %2
br label %6
6: ; preds = %15, %0
%7 = load i32, i32* %2
%8 = icmp slt i32 %7, 3
br i1 %8, label %9, label %18
9: ; preds = %6
%10 = load i32, i32* %2
%11 = sext i32 %10 to i64
%12 = getelementptr inbounds [3 x i32], [3 x i32]* %1, i64 0, i64 %11
%13 = load i32, i32* %12
%14 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %13)
br label %15
15: ; preds = %9
%16 = load i32, i32* %2
%17 = add nsw i32 %16, 1
store i32 %17, i32* %2
br label %6
18: ; preds = %6
ret void
}

LLVM IR (-O2):
@__const.main.a = [3 x i32] [i32 1, i32 2, i32 3]
@.str = [4 x i8] c"%d \00"
define void @main() {
%1 = alloca [3 x i32]
%2 = bitcast [3 x i32]* %1 to i8*
%3 = getelementptr inbounds [3 x i32], [3 x i32]* %1, i64 0, i64 0
%4 = call i32 @swap(i32* %3, i32 0, i32 1)
%5 = load i32, i32* %3
%6 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %5)
%7 = getelementptr inbounds [3 x i32], [3 x i32]* %1, i64 0, i64 1
%8 = load i32, i32* %7
%9 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %8)
%10 = getelementptr inbounds [3 x i32], [3 x i32]* %1, i64 0, i64 2
%11 = load i32, i32* %10
%12 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %11)
ret void
}