#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*/ exit(int);
int /*<<< orphan*/ free(int *);
scalar_t__ malloc(int);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *);
int main(void) {
  int n, *tab, i;
  printf("Input number of elements: \n");
  scanf("%d", &n);
  if ((tab = (int *)malloc(n * sizeof(int))) == NULL) {
    printf("Memory allocation error ! \n");
    exit(1);
  }
  for (i = 0; i < n; i++)
    scanf("%d", &tab[i]);
  for (i = 0; i < n; i++)
    printf("%d ", tab[i]);
  free(tab);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xe9a(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xea8(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1060 <scanf@plt>
movslq -0x8(%rbp),%rax
shl    $0x2,%rax
mov    %eax,%edi
call   1050 <malloc@plt>
mov    %rax,-0x10(%rbp)
cmp    $0x0,%rax
jne    11b2 <main+0x62>
lea    0xe7e(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0x1,%edi
call   1070 <exit@plt>
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    11ee <main+0x9e>
mov    -0x10(%rbp),%rsi
movslq -0x14(%rbp),%rax
shl    $0x2,%rax
add    %rax,%rsi
lea    0xe41(%rip),%rdi
call   1060 <scanf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    11b9 <main+0x69>
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    1228 <main+0xd8>
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xe28(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    11f5 <main+0xa5>
mov    -0x10(%rbp),%rdi
call   1030 <free@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
lea    0xe98(%rip),%rdi
call   1040 <puts@plt>
lea    0xe85(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1070 <scanf@plt>
mov    0x4(%rsp),%edi
shl    $0x2,%edi
call   1060 <malloc@plt>
test   %rax,%rax
je     1212 <main+0xb2>
mov    %rax,%r14
cmpl   $0x0,0x4(%rsp)
jle    11fc <main+0x9c>
xor    %r12d,%r12d
lea    0xe56(%rip),%r15
mov    %r14,%rbx
nopl   (%rax)
mov    %r15,%rdi
mov    %rbx,%rsi
call   1070 <scanf@plt>
add    $0x1,%r12
movslq 0x4(%rsp),%rax
add    $0x4,%rbx
cmp    %rax,%r12
jl     11b0 <main+0x50>
test   %eax,%eax
jle    11fc <main+0x9c>
lea    0xe2b(%rip),%r15
xor    %ebx,%ebx
nopw   0x0(%rax,%rax,1)
mov    (%r14,%rbx,4),%esi
mov    %r15,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
add    $0x1,%rbx
movslq 0x4(%rsp),%rax
cmp    %rax,%rbx
jl     11e0 <main+0x80>
mov    %r14,%rdi
call   1030 <free@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret
lea    0xe09(%rip),%rdi
call   1040 <puts@plt>
mov    $0x1,%edi
call   1080 <exit@plt>

LLVM IR (-O0):
@.str = [28 x i8] c"Input number of elements: \0A\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [28 x i8] c"Memory allocation error ! \0A\00"
@.str.3 = [4 x i8] c"%d \00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32*
%4 = alloca i32
store i32 0, i32* %1
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%7 = load i32, i32* %2
%8 = sext i32 %7 to i64
%9 = mul i64 %8, 4
%10 = trunc i64 %9 to i32
%11 = call i64 @malloc(i32 %10)
%12 = inttoptr i64 %11 to i32*
store i32* %12, i32** %3
%13 = icmp eq i32* %12, null
br i1 %13, label %14, label %17
14: ; preds = %0
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.2, i64 0, i64 0))
%16 = call i32 @exit(i32 1)
unreachable
17: ; preds = %0
store i32 0, i32* %4
br label %18
18: ; preds = %28, %17
%19 = load i32, i32* %4
%20 = load i32, i32* %2
%21 = icmp slt i32 %19, %20
br i1 %21, label %22, label %31
22: ; preds = %18
%23 = load i32*, i32** %3
%24 = load i32, i32* %4
%25 = sext i32 %24 to i64
%26 = getelementptr inbounds i32, i32* %23, i64 %25
%27 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %26)
br label %28
28: ; preds = %22
%29 = load i32, i32* %4
%30 = add nsw i32 %29, 1
store i32 %30, i32* %4
br label %18
31: ; preds = %18
store i32 0, i32* %4
br label %32
32: ; preds = %43, %31
%33 = load i32, i32* %4
%34 = load i32, i32* %2
%35 = icmp slt i32 %33, %34
br i1 %35, label %36, label %46
36: ; preds = %32
%37 = load i32*, i32** %3
%38 = load i32, i32* %4
%39 = sext i32 %38 to i64
%40 = getelementptr inbounds i32, i32* %37, i64 %39
%41 = load i32, i32* %40
%42 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 %41)
br label %43
43: ; preds = %36
%44 = load i32, i32* %4
%45 = add nsw i32 %44, 1
store i32 %45, i32* %4
br label %32
46: ; preds = %32
%47 = load i32*, i32** %3
%48 = call i32 @free(i32* %47)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%d\00"
@.str.3 = [4 x i8] c"%d \00"
@str = [27 x i8] c"Input number of elements: \00"
@str.4 = [27 x i8] c"Memory allocation error ! \00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([27 x i8], [27 x i8]* @str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%5 = load i32, i32* %1
%6 = shl i32 %5, 2
%7 = call i64 @malloc(i32 %6)
%8 = inttoptr i64 %7 to i32*
%9 = icmp eq i64 %7, 0
br i1 %9, label %13, label %10
10: ; preds = %0
%11 = load i32, i32* %1
%12 = icmp sgt i32 %11, 0
br i1 %12, label %18, label %35
13: ; preds = %0
%14 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([27 x i8], [27 x i8]* @str.4, i64 0, i64 0))
%15 = call i32 @exit(i32 1)
unreachable
16: ; preds = %18
%17 = icmp sgt i32 %23, 0
br i1 %17, label %26, label %35
18: ; preds = %10, %18
%19 = phi i64 [ %22, %18 ], [ 0, %10 ]
%20 = getelementptr inbounds i32, i32* %8, i64 %19
%21 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %20)
%22 = add nuw nsw i64 %19, 1
%23 = load i32, i32* %1
%24 = sext i32 %23 to i64
%25 = icmp slt i64 %22, %24
br i1 %25, label %18, label %16
26: ; preds = %16, %26
%27 = phi i64 [ %31, %26 ], [ 0, %16 ]
%28 = getelementptr inbounds i32, i32* %8, i64 %27
%29 = load i32, i32* %28
%30 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 %29)
%31 = add nuw nsw i64 %27, 1
%32 = load i32, i32* %1
%33 = sext i32 %32 to i64
%34 = icmp slt i64 %31, %33
br i1 %34, label %26, label %35
35: ; preds = %26, %10, %16
%36 = call i32 @free(i32* %8)
ret i32 0
}