#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*/ retorna_matriz2D(int **);
int main() {
  int mat2D[2][2];
  retorna_matriz2D(mat2D);
  for (int x = 0; x < 2; x++)
    for (int y = 0; y < 2; y++)
      printf("%d\n", mat2D[x][y]);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
lea    -0x20(%rbp),%rdi
call   1040 <retorna_matriz2D@plt>
movl   $0x0,-0x24(%rbp)
cmpl   $0x2,-0x24(%rbp)
jge    119d <main+0x7d>
movl   $0x0,-0x28(%rbp)
cmpl   $0x2,-0x28(%rbp)
jge    118a <main+0x6a>
movslq -0x24(%rbp),%rcx
lea    -0x20(%rbp),%rax
shl    $0x3,%rcx
add    %rcx,%rax
movslq -0x28(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xe89(%rip),%rdi
call   1030 <printf@plt>
mov    -0x28(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x28(%rbp)
jmp    1150 <main+0x30>
jmp    118f <main+0x6f>
mov    -0x24(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x24(%rbp)
jmp    113f <main+0x1f>
mov    -0x4(%rbp),%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
mov    %rsp,%rdi
call   1040 <retorna_matriz2D@plt>
mov    (%rsp),%esi
lea    0xec9(%rip),%rbx
mov    %rbx,%rdi
call   1030 <printf@plt>
mov    0x4(%rsp),%esi
mov    %rbx,%rdi
call   1030 <printf@plt>
mov    0x8(%rsp),%esi
mov    %rbx,%rdi
call   1030 <printf@plt>
mov    0xc(%rsp),%esi
mov    %rbx,%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [2 x [2 x i32]]
%3 = alloca i32
%4 = alloca i32
store i32 0, i32* %1
%5 = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %2, i64 0, i64 0
%6 = bitcast [2 x i32]* %5 to i32**
%7 = call i32 @retorna_matriz2D(i32** %6)
store i32 0, i32* %3
br label %8
8: ; preds = %28, %0
%9 = load i32, i32* %3
%10 = icmp slt i32 %9, 2
br i1 %10, label %11, label %31
11: ; preds = %8
store i32 0, i32* %4
br label %12
12: ; preds = %24, %11
%13 = load i32, i32* %4
%14 = icmp slt i32 %13, 2
br i1 %14, label %15, label %27
15: ; preds = %12
%16 = load i32, i32* %3
%17 = sext i32 %16 to i64
%18 = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %2, i64 0, i64 %17
%19 = load i32, i32* %4
%20 = sext i32 %19 to i64
%21 = getelementptr inbounds [2 x i32], [2 x i32]* %18, i64 0, i64 %20
%22 = load i32, i32* %21
%23 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %22)
br label %24
24: ; preds = %15
%25 = load i32, i32* %4
%26 = add nsw i32 %25, 1
store i32 %26, i32* %4
br label %12
27: ; preds = %12
br label %28
28: ; preds = %27
%29 = load i32, i32* %3
%30 = add nsw i32 %29, 1
store i32 %30, i32* %3
br label %8
31: ; preds = %8
%32 = load i32, i32* %1
ret i32 %32
}

LLVM IR (-O2):
@.str = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = alloca [2 x [2 x i32]]
%2 = bitcast [2 x [2 x i32]]* %1 to i8*
%3 = bitcast [2 x [2 x i32]]* %1 to i32**
%4 = call i32 @retorna_matriz2D(i32** %3)
%5 = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %1, i64 0, i64 0, i64 0
%6 = load i32, i32* %5
%7 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %6)
%8 = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %1, i64 0, i64 0, i64 1
%9 = load i32, i32* %8
%10 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %9)
%11 = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %1, i64 0, i64 1, i64 0
%12 = load i32, i32* %11
%13 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %12)
%14 = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %1, i64 0, i64 1, i64 1
%15 = load i32, i32* %14
%16 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %15)
ret i32 0
}