#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*/ fun(int *);
int /*<<< orphan*/ getchar();
int /*<<< orphan*/ printf(char *, int);
int main() {
  int a[] = {1, 2, 3, 4, 5, 6}, i;
  fun(a);
  for (i = 0; i < 6; printf("%3d", a[i++]))
    ;
  getchar();
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
mov    0xeba(%rip),%rax
mov    %rax,-0x20(%rbp)
mov    0xeb7(%rip),%rax
mov    %rax,-0x18(%rbp)
mov    0xeb4(%rip),%rax
mov    %rax,-0x10(%rbp)
lea    -0x20(%rbp),%rdi
call   1030 <fun@plt>
movl   $0x0,-0x24(%rbp)
cmpl   $0x6,-0x24(%rbp)
jge    11a1 <main+0x71>
jmp    117f <main+0x4f>
mov    -0x24(%rbp),%eax
mov    %eax,%ecx
add    $0x1,%ecx
mov    %ecx,-0x24(%rbp)
cltq
mov    -0x20(%rbp,%rax,4),%esi
lea    0xe81(%rip),%rdi
call   1040 <printf@plt>
jmp    1170 <main+0x40>
mov    $0x0,%al
call   1050 <getchar@plt>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x20,%rsp
mov    0xed4(%rip),%rax
mov    %rax,0x10(%rsp)
movaps 0xeb8(%rip),%xmm0
movaps %xmm0,(%rsp)
mov    %rsp,%rdi
call   1030 <fun@plt>
mov    (%rsp),%esi
lea    0xeba(%rip),%rbx
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    0x4(%rsp),%esi
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    0x8(%rsp),%esi
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    0xc(%rsp),%esi
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    0x10(%rsp),%esi
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    0x14(%rsp),%esi
mov    %rbx,%rdi
call   1040 <printf@plt>
xor    %eax,%eax
call   1050 <getchar@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbx
ret

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

LLVM IR (-O2):
@__const.main.a = [6 x i32] [i32 1, i32 2, i32 3, i32 4, i32 5, i32 6]
@.str = [4 x i8] c"%3d\00"
define i32 @main() {
%1 = alloca [6 x i32]
%2 = bitcast [6 x i32]* %1 to i8*
%3 = getelementptr inbounds [6 x i32], [6 x i32]* %1, i64 0, i64 0
%4 = call i32 @fun(i32* %3)
%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 [6 x i32], [6 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 [6 x i32], [6 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)
%13 = getelementptr inbounds [6 x i32], [6 x i32]* %1, i64 0, i64 3
%14 = load i32, i32* %13
%15 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %14)
%16 = getelementptr inbounds [6 x i32], [6 x i32]* %1, i64 0, i64 4
%17 = load i32, i32* %16
%18 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %17)
%19 = getelementptr inbounds [6 x i32], [6 x i32]* %1, i64 0, i64 5
%20 = load i32, i32* %19
%21 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %20)
%22 = call i32 (...) @getchar()
ret i32 0
}