#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*/ free(int *);
scalar_t__ malloc(int);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *);
main() {
  int *ptr;
  int no_els, no_bytes, i;
  printf("Enter number of elements you want in block: ");
  scanf("%d", &no_els);
  no_bytes = no_els * sizeof(int);
  ptr = (int *)malloc(no_bytes);
  if (ptr == NULL) {
    printf("\nError: Cannot allocate memory\n");
  } else {
    printf("\nPlease enter values for your elements:\n");
    for (i = 0; i < no_els; i++) {
      scanf("%d", ptr + i);
    }
    for (i = 0; i < no_els; i++) {
      printf("\n%d", *(ptr + i));
    }
  }
  free(ptr);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeaa(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xf13(%rip),%rdi
lea    -0x14(%rbp),%rsi
call   1060 <scanf@plt>
movslq -0x14(%rbp),%rax
shl    $0x2,%rax
mov    %eax,-0x18(%rbp)
mov    -0x18(%rbp),%edi
call   1050 <malloc@plt>
mov    %rax,-0x10(%rbp)
cmpq   $0x0,-0x10(%rbp)
jne    11a2 <main+0x62>
lea    0xe97(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
jmp    122b <main+0xeb>
lea    0xea4(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
movl   $0x0,-0x1c(%rbp)
mov    -0x1c(%rbp),%eax
cmp    -0x14(%rbp),%eax
jge    11ec <main+0xac>
mov    -0x10(%rbp),%rsi
movslq -0x1c(%rbp),%rax
shl    $0x2,%rax
add    %rax,%rsi
lea    0xe9e(%rip),%rdi
call   1060 <scanf@plt>
mov    -0x1c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x1c(%rbp)
jmp    11b7 <main+0x77>
movl   $0x0,-0x1c(%rbp)
mov    -0x1c(%rbp),%eax
cmp    -0x14(%rbp),%eax
jge    1226 <main+0xe6>
mov    -0x10(%rbp),%rax
movslq -0x1c(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xe65(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x1c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x1c(%rbp)
jmp    11f3 <main+0xb3>
jmp    122b <main+0xeb>
mov    -0x10(%rbp),%rdi
call   1030 <free@plt>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
lea    0xea1(%rip),%rdi
xor    %eax,%eax
call   1050 <printf@plt>
lea    0xec1(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1070 <scanf@plt>
mov    0x4(%rsp),%edi
shl    $0x2,%edi
call   1060 <malloc@plt>
mov    %rax,%r14
test   %rax,%rax
je     11fe <main+0xae>
lea    0xe9f(%rip),%rdi
call   1040 <puts@plt>
cmpl   $0x0,0x4(%rsp)
jle    120a <main+0xba>
xor    %r12d,%r12d
lea    0xe86(%rip),%r15
mov    %r14,%rbx
nopl   0x0(%rax,%rax,1)
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+0x60>
test   %eax,%eax
jle    120a <main+0xba>
lea    0xe55(%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+0x90>
jmp    120a <main+0xba>
lea    0xe54(%rip),%rdi
call   1040 <puts@plt>
mov    %r14,%rdi
call   1030 <free@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [45 x i8] c"Enter number of elements you want in block: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [32 x i8] c"\0AError: Cannot allocate memory\0A\00"
@.str.3 = [41 x i8] c"\0APlease enter values for your elements:\0A\00"
@.str.4 = [4 x i8] c"\0A%d\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32*
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
store i32 0, i32* %1
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([45 x i8], [45 x i8]* @.str, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %3)
%8 = load i32, i32* %3
%9 = sext i32 %8 to i64
%10 = mul i64 %9, 4
%11 = trunc i64 %10 to i32
store i32 %11, i32* %4
%12 = load i32, i32* %4
%13 = call i64 @malloc(i32 %12)
%14 = inttoptr i64 %13 to i32*
store i32* %14, i32** %2
%15 = load i32*, i32** %2
%16 = icmp eq i32* %15, null
br i1 %16, label %17, label %19
17: ; preds = %0
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str.2, i64 0, i64 0))
br label %50
19: ; preds = %0
%20 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.3, i64 0, i64 0))
store i32 0, i32* %5
br label %21
21: ; preds = %31, %19
%22 = load i32, i32* %5
%23 = load i32, i32* %3
%24 = icmp slt i32 %22, %23
br i1 %24, label %25, label %34
25: ; preds = %21
%26 = load i32*, i32** %2
%27 = load i32, i32* %5
%28 = sext i32 %27 to i64
%29 = getelementptr inbounds i32, i32* %26, i64 %28
%30 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %29)
br label %31
31: ; preds = %25
%32 = load i32, i32* %5
%33 = add nsw i32 %32, 1
store i32 %33, i32* %5
br label %21
34: ; preds = %21
store i32 0, i32* %5
br label %35
35: ; preds = %46, %34
%36 = load i32, i32* %5
%37 = load i32, i32* %3
%38 = icmp slt i32 %36, %37
br i1 %38, label %39, label %49
39: ; preds = %35
%40 = load i32*, i32** %2
%41 = load i32, i32* %5
%42 = sext i32 %41 to i64
%43 = getelementptr inbounds i32, i32* %40, i64 %42
%44 = load i32, i32* %43
%45 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0), i32 %44)
br label %46
46: ; preds = %39
%47 = load i32, i32* %5
%48 = add nsw i32 %47, 1
store i32 %48, i32* %5
br label %35
49: ; preds = %35
br label %50
50: ; preds = %49, %17
%51 = load i32*, i32** %2
%52 = call i32 @free(i32* %51)
%53 = load i32, i32* %1
ret i32 %53
}

LLVM IR (-O2):
@.str = [45 x i8] c"Enter number of elements you want in block: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.4 = [4 x i8] c"\0A%d\00"
@str = [40 x i8] c"\0APlease enter values for your elements:\00"
@str.5 = [31 x i8] c"\0AError: Cannot allocate memory\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([45 x i8], [45 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 %10, label %12
10: ; preds = %0
%11 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([31 x i8], [31 x i8]* @str.5, i64 0, i64 0))
br label %35
12: ; preds = %0
%13 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([40 x i8], [40 x i8]* @str, i64 0, i64 0))
%14 = load i32, i32* %1
%15 = icmp sgt i32 %14, 0
br i1 %15, label %18, label %35
16: ; preds = %18
%17 = icmp sgt i32 %23, 0
br i1 %17, label %26, label %35
18: ; preds = %12, %18
%19 = phi i64 [ %22, %18 ], [ 0, %12 ]
%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.4, 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, %12, %16, %10
%36 = call i32 @free(i32* %8)
ret i32 0
}