#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 *, ...);
void dump_array(size_t *a, size_t n) {
  printf("=> [");
  for (int i = 0; i < n; ++i)
    printf("%lu ", a[i]);
  printf("\b]\n");
}


x86 assembly (clang, -O0):
<dump_array>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
lea    0xed9(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x14(%rbp)
movslq -0x14(%rbp),%rax
cmp    -0x10(%rbp),%rax
jae    116b <dump_array+0x5b>
mov    -0x8(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rsi
lea    0xeaf(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1135 <dump_array+0x25>
lea    0xe98(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<dump_array>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
mov    %rsi,%r12
mov    %rdi,%r14
lea    0xecb(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
test   %r12,%r12
je     1167 <dump_array+0x47>
lea    0xebd(%rip),%r15
xor    %ebx,%ebx
nopw   0x0(%rax,%rax,1)
mov    (%r14,%rbx,8),%rsi
mov    %r15,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%r12
jne    1150 <dump_array+0x30>
lea    0xe9c(%rip),%rdi
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [5 x i8] c"=> [\00"
@.str.1 = [5 x i8] c"%lu \00"
@.str.2 = [4 x i8] c"\08]\0A\00"
define void @dump_array(i64* %0, i64 %1) {
%3 = alloca i64*
%4 = alloca i64
%5 = alloca i32
store i64* %0, i64** %3
store i64 %1, i64* %4
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %5
br label %7
7: ; preds = %19, %2
%8 = load i32, i32* %5
%9 = sext i32 %8 to i64
%10 = load i64, i64* %4
%11 = icmp ult i64 %9, %10
br i1 %11, label %12, label %22
12: ; preds = %7
%13 = load i64*, i64** %3
%14 = load i32, i32* %5
%15 = sext i32 %14 to i64
%16 = getelementptr inbounds i64, i64* %13, i64 %15
%17 = load i64, i64* %16
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i64 %17)
br label %19
19: ; preds = %12
%20 = load i32, i32* %5
%21 = add nsw i32 %20, 1
store i32 %21, i32* %5
br label %7
22: ; preds = %7
%23 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [5 x i8] c"=> [\00"
@.str.1 = [5 x i8] c"%lu \00"
@str = [3 x i8] c"\08]\00"
define void @dump_array(i64* nocapture %0, i64 %1) {
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0))
%4 = icmp eq i64 %1, 0
br i1 %4, label %5, label %7
5: ; preds = %7, %2
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @str, i64 0, i64 0))
ret void
7: ; preds = %2, %7
%8 = phi i64 [ %12, %7 ], [ 0, %2 ]
%9 = getelementptr inbounds i64, i64* %0, i64 %8
%10 = load i64, i64* %9
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i64 %10)
%12 = add nuw i64 %8, 1
%13 = icmp eq i64 %12, %1
br i1 %13, label %5, label %7
}