#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 EXIT_SUCCESS;
int /*<<< orphan*/ printf(char *, ...);
int main(void) {
  int matrix_a[2][3] = {{0}};
  int matrix_b[2][3] = {{10, 20, 30}, {40, 50, 60}};
  int num = matrix_b[0][1];
  printf("num: %d\n", num);
  for (int i = 0; i < 2; i++) {
    printf("ROW[%d] : ", i);
    for (int y = 0; y < 3; y++)
      printf("%d | ", matrix_b[i][y]);
    printf("\n");
  }
  return (EXIT_SUCCESS);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x50,%rsp
movl   $0x0,-0x4(%rbp)
lea    -0x20(%rbp),%rdi
xor    %esi,%esi
mov    $0x18,%edx
call   1040 <memset@plt>
mov    0xeba(%rip),%rax
mov    %rax,-0x40(%rbp)
mov    0xeb7(%rip),%rax
mov    %rax,-0x38(%rbp)
mov    0xeb4(%rip),%rax
mov    %rax,-0x30(%rbp)
mov    -0x3c(%rbp),%eax
mov    %eax,-0x44(%rbp)
mov    -0x44(%rbp),%esi
lea    0xea8(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x48(%rbp)
cmpl   $0x2,-0x48(%rbp)
jge    11f8 <main+0xd8>
mov    -0x48(%rbp),%esi
lea    0xe8f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x4c(%rbp)
cmpl   $0x3,-0x4c(%rbp)
jge    11dc <main+0xbc>
movslq -0x48(%rbp),%rcx
lea    -0x40(%rbp),%rax
imul   $0xc,%rcx,%rcx
add    %rcx,%rax
movslq -0x4c(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xe65(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x4c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4c(%rbp)
jmp    11a0 <main+0x80>
lea    0xe3c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x48(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x48(%rbp)
jmp    117e <main+0x5e>
mov    0x2de1(%rip),%rax
mov    (%rax),%eax
add    $0x50,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
lea    0xed5(%rip),%rdi
mov    $0x14,%esi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xecb(%rip),%r14
mov    %r14,%rdi
xor    %esi,%esi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xec3(%rip),%rbx
mov    %rbx,%rdi
mov    $0xa,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x14,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x1e,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    %r14,%rdi
mov    $0x1,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x28,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x32,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x3c,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    0x2e0b(%rip),%rax
mov    (%rax),%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@__const.main.matrix_b = [2 x [3 x i32]] [[3 x i32] [i32 10, i32 20, i32 30], [3 x i32] [i32 40, i32 50, i32 60]]
@.str = [9 x i8] c"num: %d\0A\00"
@.str.1 = [11 x i8] c"ROW[%d] : \00"
@.str.2 = [6 x i8] c"%d | \00"
@.str.3 = [2 x i8] c"\0A\00"
@EXIT_SUCCESS = global i32 0
define i32 @main() {
%1 = alloca i32
%2 = alloca [2 x [3 x i32]]
%3 = alloca [2 x [3 x i32]]
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
store i32 0, i32* %1
%7 = bitcast [2 x [3 x i32]]* %2 to i8*
%8 = bitcast [2 x [3 x i32]]* %3 to i8*
%9 = getelementptr inbounds [2 x [3 x i32]], [2 x [3 x i32]]* %3, i64 0, i64 0
%10 = getelementptr inbounds [3 x i32], [3 x i32]* %9, i64 0, i64 1
%11 = load i32, i32* %10
store i32 %11, i32* %4
%12 = load i32, i32* %4
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i32 %12)
store i32 0, i32* %5
br label %14
14: ; preds = %37, %0
%15 = load i32, i32* %5
%16 = icmp slt i32 %15, 2
br i1 %16, label %17, label %40
17: ; preds = %14
%18 = load i32, i32* %5
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 %18)
store i32 0, i32* %6
br label %20
20: ; preds = %32, %17
%21 = load i32, i32* %6
%22 = icmp slt i32 %21, 3
br i1 %22, label %23, label %35
23: ; preds = %20
%24 = load i32, i32* %5
%25 = sext i32 %24 to i64
%26 = getelementptr inbounds [2 x [3 x i32]], [2 x [3 x i32]]* %3, i64 0, i64 %25
%27 = load i32, i32* %6
%28 = sext i32 %27 to i64
%29 = getelementptr inbounds [3 x i32], [3 x i32]* %26, i64 0, i64 %28
%30 = load i32, i32* %29
%31 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0), i32 %30)
br label %32
32: ; preds = %23
%33 = load i32, i32* %6
%34 = add nsw i32 %33, 1
store i32 %34, i32* %6
br label %20
35: ; preds = %20
%36 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
br label %37
37: ; preds = %35
%38 = load i32, i32* %5
%39 = add nsw i32 %38, 1
store i32 %39, i32* %5
br label %14
40: ; preds = %14
%41 = load i32, i32* @EXIT_SUCCESS
ret i32 %41
}

LLVM IR (-O2):
@.str = [9 x i8] c"num: %d\0A\00"
@.str.1 = [11 x i8] c"ROW[%d] : \00"
@.str.2 = [6 x i8] c"%d | \00"
@EXIT_SUCCESS = global i32 0
define i32 @main() {
%1 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i32 20)
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 0)
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0), i32 10)
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0), i32 20)
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0), i32 30)
%6 = tail call i32 @putchar(i32 10)
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 1)
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0), i32 40)
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0), i32 50)
%10 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0), i32 60)
%11 = tail call i32 @putchar(i32 10)
%12 = load i32, i32* @EXIT_SUCCESS
ret i32 %12
}