#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 */
scalar_t__ malloc(int);
int rand();
int vector_rand(int tam) {
  int i, j = 0;
  int *vector = (int *)malloc(sizeof(int) * tam);
  for (i = 0; i < tam; i++) {
    j = rand() % tam;
    vector[i] = j;
  }
  return *vector;
}


x86 assembly (clang, -O0):
<vector_rand>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %edi,-0x4(%rbp)
movl   $0x0,-0xc(%rbp)
movslq -0x4(%rbp),%rax
shl    $0x2,%rax
mov    %eax,%edi
call   1030 <malloc@plt>
mov    %rax,-0x18(%rbp)
movl   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%eax
cmp    -0x4(%rbp),%eax
jge    1182 <vector_rand+0x62>
mov    $0x0,%al
call   1040 <rand@plt>
cltd
idivl  -0x4(%rbp)
mov    %edx,-0xc(%rbp)
mov    -0xc(%rbp),%edx
mov    -0x18(%rbp),%rax
movslq -0x8(%rbp),%rcx
mov    %edx,(%rax,%rcx,4)
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    114c <vector_rand+0x2c>
mov    -0x18(%rbp),%rax
mov    (%rax),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<vector_rand>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
mov    %edi,%r14d
lea    0x0(,%r14,4),%edi
call   1030 <malloc@plt>
mov    %rax,%r15
test   %r14d,%r14d
jle    1168 <vector_rand+0x48>
mov    %r14d,%r12d
xor    %ebx,%ebx
cs nopw 0x0(%rax,%rax,1)
nop
xor    %eax,%eax
call   1040 <rand@plt>
cltd
idiv   %r14d
mov    %edx,(%r15,%rbx,4)
add    $0x1,%rbx
cmp    %rbx,%r12
jne    1150 <vector_rand+0x30>
mov    (%r15),%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
define i32 @vector_rand(i32 %0) {
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32*
store i32 %0, i32* %2
store i32 0, i32* %4
%6 = load i32, i32* %2
%7 = sext i32 %6 to i64
%8 = mul i64 4, %7
%9 = trunc i64 %8 to i32
%10 = call i64 @malloc(i32 %9)
%11 = inttoptr i64 %10 to i32*
store i32* %11, i32** %5
store i32 0, i32* %3
br label %12
12: ; preds = %25, %1
%13 = load i32, i32* %3
%14 = load i32, i32* %2
%15 = icmp slt i32 %13, %14
br i1 %15, label %16, label %28
16: ; preds = %12
%17 = call i32 (...) @rand()
%18 = load i32, i32* %2
%19 = srem i32 %17, %18
store i32 %19, i32* %4
%20 = load i32, i32* %4
%21 = load i32*, i32** %5
%22 = load i32, i32* %3
%23 = sext i32 %22 to i64
%24 = getelementptr inbounds i32, i32* %21, i64 %23
store i32 %20, i32* %24
br label %25
25: ; preds = %16
%26 = load i32, i32* %3
%27 = add nsw i32 %26, 1
store i32 %27, i32* %3
br label %12
28: ; preds = %12
%29 = load i32*, i32** %5
%30 = load i32, i32* %29
ret i32 %30
}

LLVM IR (-O2):
define i32 @vector_rand(i32 %0) {
%2 = shl i32 %0, 2
%3 = tail call i64 @malloc(i32 %2)
%4 = inttoptr i64 %3 to i32*
%5 = icmp sgt i32 %0, 0
br i1 %5, label %6, label %15
6: ; preds = %1
%7 = zext i32 %0 to i64
br label %8
8: ; preds = %6, %8
%9 = phi i64 [ 0, %6 ], [ %13, %8 ]
%10 = tail call i32 (...) @rand()
%11 = srem i32 %10, %0
%12 = getelementptr inbounds i32, i32* %4, i64 %9
store i32 %11, i32* %12
%13 = add nuw nsw i64 %9, 1
%14 = icmp eq i64 %13, %7
br i1 %14, label %15, label %8
15: ; preds = %8, %1
%16 = load i32, i32* %4
ret i32 %16
}