#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);
void print_arr(int arr[], size_t length) {
  if (length == 0)
    return;
  for (size_t i = 0; i < length - 1; i++)
    printf("%d ", arr[i]);
  printf("%d\n", arr[length - 1]);
}


x86 assembly (clang, -O0):
<print_arr>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpq   $0x0,-0x10(%rbp)
jne    1130 <print_arr+0x20>
jmp    1190 <print_arr+0x80>
movq   $0x0,-0x18(%rbp)
mov    -0x18(%rbp),%rax
mov    -0x10(%rbp),%rcx
sub    $0x1,%rcx
cmp    %rcx,%rax
jae    1175 <print_arr+0x65>
mov    -0x8(%rbp),%rax
mov    -0x18(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xea1(%rip),%rdi
call   1030 <printf@plt>
mov    -0x18(%rbp),%rax
add    $0x1,%rax
mov    %rax,-0x18(%rbp)
jmp    1138 <print_arr+0x28>
mov    -0x8(%rbp),%rax
mov    -0x10(%rbp),%rcx
sub    $0x1,%rcx
mov    (%rax,%rcx,4),%esi
lea    0xe79(%rip),%rdi
call   1030 <printf@plt>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<print_arr>:
test   %rsi,%rsi
je     116f <print_arr+0x5f>
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
mov    %rsi,%r14
mov    %rdi,%r12
mov    %rsi,%r13
add    $0xffffffffffffffff,%r13
je     1155 <print_arr+0x45>
xor    %ebx,%ebx
lea    0xeca(%rip),%r15
cs nopw 0x0(%rax,%rax,1)
mov    (%r12,%rbx,4),%esi
mov    %r15,%rdi
call   1030 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%r13
jne    1140 <print_arr+0x30>
mov    -0x4(%r12,%r14,4),%esi
lea    0xea3(%rip),%rdi
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
jmp    1030 <printf@plt>
ret

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

LLVM IR (-O2):
@.str = [4 x i8] c"%d \00"
@.str.1 = [4 x i8] c"%d\0A\00"
define void @print_arr(i32* nocapture %0, i64 %1) {
%3 = icmp eq i64 %1, 0
br i1 %3, label %18, label %4
4: ; preds = %2
%5 = add i64 %1, -1
%6 = icmp eq i64 %5, 0
br i1 %6, label %7, label %11
7: ; preds = %11, %4
%8 = getelementptr inbounds i32, i32* %0, i64 %5
%9 = load i32, i32* %8
%10 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %9)
br label %18
11: ; preds = %4, %11
%12 = phi i64 [ %16, %11 ], [ 0, %4 ]
%13 = getelementptr inbounds i32, i32* %0, i64 %12
%14 = load i32, i32* %13
%15 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %14)
%16 = add nuw i64 %12, 1
%17 = icmp eq i64 %16, %5
br i1 %17, label %7, label %11
18: ; preds = %2, %7
ret void
}