#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[10], i;
  for (i = 0; i < 10; i++)
    a[i] = i + 1;
  fun(a);
  for (i = 0; i < 10; printf("%3d", a[i++]))
    ;
  getchar();
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x40,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x34(%rbp)
cmpl   $0xa,-0x34(%rbp)
jge    116c <main+0x3c>
mov    -0x34(%rbp),%ecx
add    $0x1,%ecx
movslq -0x34(%rbp),%rax
mov    %ecx,-0x30(%rbp,%rax,4)
mov    -0x34(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x34(%rbp)
jmp    1146 <main+0x16>
lea    -0x30(%rbp),%rdi
call   1030 <fun@plt>
movl   $0x0,-0x34(%rbp)
cmpl   $0xa,-0x34(%rbp)
jge    11ad <main+0x7d>
jmp    118b <main+0x5b>
mov    -0x34(%rbp),%eax
mov    %eax,%ecx
add    $0x1,%ecx
mov    %ecx,-0x34(%rbp)
cltq
mov    -0x30(%rbp,%rax,4),%esi
lea    0xe5d(%rip),%rdi
call   1040 <printf@plt>
jmp    117c <main+0x4c>
mov    $0x0,%al
call   1050 <getchar@plt>
xor    %eax,%eax
add    $0x40,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x30,%rsp
movaps 0xec4(%rip),%xmm0
movaps %xmm0,(%rsp)
movaps 0xec9(%rip),%xmm0
movaps %xmm0,0x10(%rsp)
movabs $0xa00000009,%rax
mov    %rax,0x20(%rsp)
mov    %rsp,%rdi
call   1030 <fun@plt>
mov    (%rsp),%esi
lea    0xeb3(%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>
mov    0x18(%rsp),%esi
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    0x1c(%rsp),%esi
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    0x20(%rsp),%esi
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    0x24(%rsp),%esi
mov    %rbx,%rdi
call   1040 <printf@plt>
xor    %eax,%eax
call   1050 <getchar@plt>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [4 x i8] c"%3d\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [10 x i32]
%3 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %3
br label %4
4: ; preds = %13, %0
%5 = load i32, i32* %3
%6 = icmp slt i32 %5, 10
br i1 %6, label %7, label %16
7: ; preds = %4
%8 = load i32, i32* %3
%9 = add nsw i32 %8, 1
%10 = load i32, i32* %3
%11 = sext i32 %10 to i64
%12 = getelementptr inbounds [10 x i32], [10 x i32]* %2, i64 0, i64 %11
store i32 %9, i32* %12
br label %13
13: ; preds = %7
%14 = load i32, i32* %3
%15 = add nsw i32 %14, 1
store i32 %15, i32* %3
br label %4
16: ; preds = %4
%17 = getelementptr inbounds [10 x i32], [10 x i32]* %2, i64 0, i64 0
%18 = call i32 @fun(i32* %17)
store i32 0, i32* %3
br label %19
19: ; preds = %23, %16
%20 = load i32, i32* %3
%21 = icmp slt i32 %20, 10
br i1 %21, label %22, label %30
22: ; preds = %19
br label %23
23: ; preds = %22
%24 = load i32, i32* %3
%25 = add nsw i32 %24, 1
store i32 %25, i32* %3
%26 = sext i32 %24 to i64
%27 = getelementptr inbounds [10 x i32], [10 x i32]* %2, i64 0, i64 %26
%28 = load i32, i32* %27
%29 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %28)
br label %19
30: ; preds = %19
%31 = call i32 (...) @getchar()
ret i32 0
}

LLVM IR (-O2):
@.str = [4 x i8] c"%3d\00"
define i32 @main() {
%1 = alloca [10 x i32]
%2 = bitcast [10 x i32]* %1 to i8*
%3 = getelementptr inbounds [10 x i32], [10 x i32]* %1, i64 0, i64 0
%4 = getelementptr inbounds [10 x i32], [10 x i32]* %1, i64 0, i64 1
%5 = getelementptr inbounds [10 x i32], [10 x i32]* %1, i64 0, i64 2
%6 = getelementptr inbounds [10 x i32], [10 x i32]* %1, i64 0, i64 3
%7 = bitcast [10 x i32]* %1 to <4 x i32>*
store <4 x i32> <i32 1, i32 2, i32 3, i32 4>, <4 x i32>* %7
%8 = getelementptr inbounds [10 x i32], [10 x i32]* %1, i64 0, i64 4
%9 = getelementptr inbounds [10 x i32], [10 x i32]* %1, i64 0, i64 5
%10 = getelementptr inbounds [10 x i32], [10 x i32]* %1, i64 0, i64 6
%11 = getelementptr inbounds [10 x i32], [10 x i32]* %1, i64 0, i64 7
%12 = bitcast i32* %8 to <4 x i32>*
store <4 x i32> <i32 5, i32 6, i32 7, i32 8>, <4 x i32>* %12
%13 = getelementptr inbounds [10 x i32], [10 x i32]* %1, i64 0, i64 8
store i32 9, i32* %13
%14 = getelementptr inbounds [10 x i32], [10 x i32]* %1, i64 0, i64 9
store i32 10, i32* %14
%15 = call i32 @fun(i32* %3)
%16 = load i32, i32* %3
%17 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %16)
%18 = load i32, i32* %4
%19 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %18)
%20 = load i32, i32* %5
%21 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %20)
%22 = load i32, i32* %6
%23 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %22)
%24 = load i32, i32* %8
%25 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %24)
%26 = load i32, i32* %9
%27 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %26)
%28 = load i32, i32* %10
%29 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %28)
%30 = load i32, i32* %11
%31 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %30)
%32 = load i32, i32* %13
%33 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %32)
%34 = load i32, i32* %14
%35 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %34)
%36 = call i32 (...) @getchar()
ret i32 0
}