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


x86 assembly (clang, -O0):
<printArr>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
movq   $0x0,-0x18(%rbp)
mov    -0x18(%rbp),%rax
mov    -0x10(%rbp),%rcx
sub    $0x1,%rcx
cmp    %rcx,%rax
jae    1165 <printArr+0x55>
mov    -0x8(%rbp),%rax
mov    -0x18(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xeb1(%rip),%rdi
call   1030 <printf@plt>
mov    -0x18(%rbp),%rax
add    $0x1,%rax
mov    %rax,-0x18(%rbp)
jmp    1128 <printArr+0x18>
mov    -0x8(%rbp),%rax
mov    -0x10(%rbp),%rcx
sub    $0x1,%rcx
mov    (%rax,%rcx,4),%esi
lea    0xe89(%rip),%rdi
call   1030 <printf@plt>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<printArr>:
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
mov    %rsi,%r14
mov    %rdi,%r12
mov    %rsi,%r13
add    $0xffffffffffffffff,%r13
je     1155 <printArr+0x45>
xor    %ebx,%ebx
lea    0xecf(%rip),%r15
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
mov    (%r12,%rbx,4),%esi
mov    %r15,%rdi
call   1030 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%r13
jne    1140 <printArr+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>

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

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