#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);
int /*<<< orphan*/ scanf(char *, int *);
void getArrayFromKeyboard(int *array, int length) {
  for (int i = 0; i < length; i++) {
    printf("a[ %d ] = ", i);
    scanf("%d", &array[i]);
  }
}


x86 assembly (clang, -O0):
<getArrayFromKeyboard>:
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    117a <getArrayFromKeyboard+0x5a>
mov    -0x10(%rbp),%esi
lea    0xeb4(%rip),%rdi
call   1030 <printf@plt>
mov    -0x8(%rbp),%rsi
movslq -0x10(%rbp),%rax
shl    $0x2,%rax
add    %rax,%rsi
lea    0xea4(%rip),%rdi
call   1040 <scanf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1136 <getArrayFromKeyboard+0x16>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<getArrayFromKeyboard>:
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
test   %esi,%esi
jle    1172 <getArrayFromKeyboard+0x52>
mov    %rdi,%r14
mov    %esi,%r13d
xor    %ebx,%ebx
lea    0xec4(%rip),%r15
lea    0xec8(%rip),%r12
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
mov    %r15,%rdi
mov    %ebx,%esi
call   1030 <printf@plt>
mov    %r12,%rdi
mov    %r14,%rsi
call   1040 <scanf@plt>
add    $0x1,%rbx
add    $0x4,%r14
cmp    %rbx,%r13
jne    1150 <getArrayFromKeyboard+0x30>
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
ret

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

LLVM IR (-O2):
@.str = [11 x i8] c"a[ %d ] = \00"
@.str.1 = [3 x i8] c"%d\00"
define void @getArrayFromKeyboard(i32* %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 %7
6: ; preds = %7, %2
ret void
7: ; preds = %4, %7
%8 = phi i64 [ 0, %4 ], [ %13, %7 ]
%9 = trunc i64 %8 to i32
%10 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %9)
%11 = getelementptr inbounds i32, i32* %0, i64 %8
%12 = tail call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %11)
%13 = add nuw nsw i64 %8, 1
%14 = icmp eq i64 %13, %5
br i1 %14, label %6, label %7
}