#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 *createIntArray(int size) {
  int i;
  int *A = (int *)malloc(size * sizeof(int));
  for (i = 0; i < size; i++)
    A[i] = rand() % 4098;
  return A;
}


x86 assembly (clang, -O0):
<createIntArray>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x4(%rbp)
movslq -0x4(%rbp),%rax
shl    $0x2,%rax
mov    %eax,%edi
call   1030 <malloc@plt>
mov    %rax,-0x10(%rbp)
movl   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%eax
cmp    -0x4(%rbp),%eax
jge    1179 <createIntArray+0x59>
mov    $0x0,%al
call   1040 <rand@plt>
mov    $0x1002,%ecx
cltd
idiv   %ecx
mov    -0x10(%rbp),%rax
movslq -0x8(%rbp),%rcx
mov    %edx,(%rax,%rcx,4)
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1145 <createIntArray+0x25>
mov    -0x10(%rbp),%rax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<createIntArray>:
push   %r15
push   %r14
push   %rbx
mov    %edi,%r14d
lea    0x0(,%r14,4),%edi
call   1030 <malloc@plt>
mov    %rax,%r15
test   %r14d,%r14d
jle    1184 <createIntArray+0x64>
mov    %r14d,%r14d
xor    %ebx,%ebx
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax)
xor    %eax,%eax
call   1040 <rand@plt>
cltq
imul   $0x3ff801,%rax,%rcx
mov    %rcx,%rdx
shr    $0x3f,%rdx
sar    $0x22,%rcx
add    %edx,%ecx
mov    %ecx,%edx
shl    $0xc,%edx
lea    (%rdx,%rcx,2),%ecx
sub    %ecx,%eax
mov    %eax,(%r15,%rbx,4)
add    $0x1,%rbx
cmp    %rbx,%r14
jne    1150 <createIntArray+0x30>
mov    %r15,%rax
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
define i32* @createIntArray(i32 %0) {
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32*
store i32 %0, i32* %2
%5 = load i32, i32* %2
%6 = sext i32 %5 to i64
%7 = mul i64 %6, 4
%8 = trunc i64 %7 to i32
%9 = call i64 @malloc(i32 %8)
%10 = inttoptr i64 %9 to i32*
store i32* %10, i32** %4
store i32 0, i32* %3
br label %11
11: ; preds = %22, %1
%12 = load i32, i32* %3
%13 = load i32, i32* %2
%14 = icmp slt i32 %12, %13
br i1 %14, label %15, label %25
15: ; preds = %11
%16 = call i32 (...) @rand()
%17 = srem i32 %16, 4098
%18 = load i32*, i32** %4
%19 = load i32, i32* %3
%20 = sext i32 %19 to i64
%21 = getelementptr inbounds i32, i32* %18, i64 %20
store i32 %17, i32* %21
br label %22
22: ; preds = %15
%23 = load i32, i32* %3
%24 = add nsw i32 %23, 1
store i32 %24, i32* %3
br label %11
25: ; preds = %11
%26 = load i32*, i32** %4
ret i32* %26
}

LLVM IR (-O2):
define i32* @createIntArray(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, 4098
%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
ret i32* %4
}