#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 rand();
void getRandomArray(int *array, int length) {
  for (int i = 0; i < length; i++)
    array[i] = rand() % 100;
  printf("Array filled.\n");
}


x86 assembly (clang, -O0):
<getRandomArray>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    116a <getRandomArray+0x4a>
mov    $0x0,%al
call   1040 <rand@plt>
mov    $0x64,%ecx
cltd
idiv   %ecx
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
mov    %edx,(%rax,%rcx,4)
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1136 <getRandomArray+0x16>
lea    0xe8f(%rip),%rdi
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<getRandomArray>:
push   %r15
push   %r14
push   %rbx
test   %esi,%esi
jle    116f <getRandomArray+0x4f>
mov    %rdi,%r14
mov    %esi,%r15d
xor    %ebx,%ebx
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
xor    %eax,%eax
call   1040 <rand@plt>
cltq
imul   $0x51eb851f,%rax,%rcx
mov    %rcx,%rdx
shr    $0x3f,%rdx
sar    $0x25,%rcx
add    %edx,%ecx
imul   $0x64,%ecx,%ecx
sub    %ecx,%eax
mov    %eax,(%r14,%rbx,4)
add    $0x1,%rbx
cmp    %rbx,%r15
jne    1140 <getRandomArray+0x20>
lea    0xe8a(%rip),%rdi
pop    %rbx
pop    %r14
pop    %r15
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [15 x i8] c"Array filled.\0A\00"
define void @getRandomArray(i32* %0, i32 %1) {
%3 = alloca i32*
%4 = alloca i32
%5 = alloca i32
store i32* %0, i32** %3
store i32 %1, i32* %4
store i32 0, i32* %5
br label %6
6: ; preds = %17, %2
%7 = load i32, i32* %5
%8 = load i32, i32* %4
%9 = icmp slt i32 %7, %8
br i1 %9, label %10, label %20
10: ; preds = %6
%11 = call i32 (...) @rand()
%12 = srem i32 %11, 100
%13 = load i32*, i32** %3
%14 = load i32, i32* %5
%15 = sext i32 %14 to i64
%16 = getelementptr inbounds i32, i32* %13, i64 %15
store i32 %12, i32* %16
br label %17
17: ; preds = %10
%18 = load i32, i32* %5
%19 = add nsw i32 %18, 1
store i32 %19, i32* %5
br label %6
20: ; preds = %6
%21 = call i32 @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@str = [14 x i8] c"Array filled.\00"
define void @getRandomArray(i32* nocapture writeonly %0, i32 %1) {
%3 = icmp sgt i32 %1, 0
br i1 %3, label %4, label %6
4: ; preds = %2
%5 = zext i32 %1 to i64
br label %8
6: ; preds = %8, %2
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @str, i64 0, i64 0))
ret void
8: ; preds = %4, %8
%9 = phi i64 [ 0, %4 ], [ %13, %8 ]
%10 = tail call i32 (...) @rand()
%11 = srem i32 %10, 100
%12 = getelementptr inbounds i32, i32* %0, i64 %9
store i32 %11, i32* %12
%13 = add nuw nsw i64 %9, 1
%14 = icmp eq i64 %13, %5
br i1 %14, label %6, label %8
}