#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 *, ...);
main() {
  int mat[5][4] = {0};
  int i, j, indice = 0;
  for (i = 0; i < 4; i++) {
    for (j = 0; j < 5; j++) {
      mat[i][j] = indice;
      indice++;
    }
  }
  for (i = 0; i < 4; i++) {
    for (j = 0; j < 5; j++) {
      printf("%4d ", mat[i][j]);
    }
    printf("\n");
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x70,%rsp
movl   $0x0,-0x4(%rbp)
lea    -0x60(%rbp),%rdi
xor    %esi,%esi
mov    $0x50,%edx
call   1040 <memset@plt>
movl   $0x0,-0x6c(%rbp)
movl   $0x0,-0x64(%rbp)
cmpl   $0x4,-0x64(%rbp)
jge    11ab <main+0x8b>
movl   $0x0,-0x68(%rbp)
cmpl   $0x5,-0x68(%rbp)
jge    1198 <main+0x78>
mov    -0x6c(%rbp),%edx
movslq -0x64(%rbp),%rcx
lea    -0x60(%rbp),%rax
shl    $0x4,%rcx
add    %rcx,%rax
movslq -0x68(%rbp),%rcx
mov    %edx,(%rax,%rcx,4)
mov    -0x6c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x6c(%rbp)
mov    -0x68(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x68(%rbp)
jmp    115e <main+0x3e>
jmp    119d <main+0x7d>
mov    -0x64(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x64(%rbp)
jmp    114d <main+0x2d>
movl   $0x0,-0x64(%rbp)
cmpl   $0x4,-0x64(%rbp)
jge    121b <main+0xfb>
movl   $0x0,-0x68(%rbp)
cmpl   $0x5,-0x68(%rbp)
jge    11ff <main+0xdf>
movslq -0x64(%rbp),%rcx
lea    -0x60(%rbp),%rax
shl    $0x4,%rcx
add    %rcx,%rax
movslq -0x68(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xe16(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x68(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x68(%rbp)
jmp    11c3 <main+0xa3>
lea    0xdff(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x64(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x64(%rbp)
jmp    11b2 <main+0x92>
mov    -0x4(%rbp),%eax
add    $0x70,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xed8(%rip),%rbx
mov    %rbx,%rdi
xor    %esi,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x1,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x2,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x3,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x5,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    %rbx,%rdi
mov    $0x5,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x6,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x7,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x8,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0xa,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    %rbx,%rdi
mov    $0xa,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0xb,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0xc,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0xd,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0xf,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    %rbx,%rdi
mov    $0xf,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x10,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x11,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x12,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x13,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [5 x i8] c"%4d \00"
@.str.1 = [2 x i8] c"\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [5 x [4 x i32]]
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
store i32 0, i32* %1
%6 = bitcast [5 x [4 x i32]]* %2 to i8*
store i32 0, i32* %5
store i32 0, i32* %3
br label %7
7: ; preds = %28, %0
%8 = load i32, i32* %3
%9 = icmp slt i32 %8, 4
br i1 %9, label %10, label %31
10: ; preds = %7
store i32 0, i32* %4
br label %11
11: ; preds = %24, %10
%12 = load i32, i32* %4
%13 = icmp slt i32 %12, 5
br i1 %13, label %14, label %27
14: ; preds = %11
%15 = load i32, i32* %5
%16 = load i32, i32* %3
%17 = sext i32 %16 to i64
%18 = getelementptr inbounds [5 x [4 x i32]], [5 x [4 x i32]]* %2, i64 0, i64 %17
%19 = load i32, i32* %4
%20 = sext i32 %19 to i64
%21 = getelementptr inbounds [4 x i32], [4 x i32]* %18, i64 0, i64 %20
store i32 %15, i32* %21
%22 = load i32, i32* %5
%23 = add nsw i32 %22, 1
store i32 %23, i32* %5
br label %24
24: ; preds = %14
%25 = load i32, i32* %4
%26 = add nsw i32 %25, 1
store i32 %26, i32* %4
br label %11
27: ; preds = %11
br label %28
28: ; preds = %27
%29 = load i32, i32* %3
%30 = add nsw i32 %29, 1
store i32 %30, i32* %3
br label %7
31: ; preds = %7
store i32 0, i32* %3
br label %32
32: ; preds = %53, %31
%33 = load i32, i32* %3
%34 = icmp slt i32 %33, 4
br i1 %34, label %35, label %56
35: ; preds = %32
store i32 0, i32* %4
br label %36
36: ; preds = %48, %35
%37 = load i32, i32* %4
%38 = icmp slt i32 %37, 5
br i1 %38, label %39, label %51
39: ; preds = %36
%40 = load i32, i32* %3
%41 = sext i32 %40 to i64
%42 = getelementptr inbounds [5 x [4 x i32]], [5 x [4 x i32]]* %2, i64 0, i64 %41
%43 = load i32, i32* %4
%44 = sext i32 %43 to i64
%45 = getelementptr inbounds [4 x i32], [4 x i32]* %42, i64 0, i64 %44
%46 = load i32, i32* %45
%47 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %46)
br label %48
48: ; preds = %39
%49 = load i32, i32* %4
%50 = add nsw i32 %49, 1
store i32 %50, i32* %4
br label %36
51: ; preds = %36
%52 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
br label %53
53: ; preds = %51
%54 = load i32, i32* %3
%55 = add nsw i32 %54, 1
store i32 %55, i32* %3
br label %32
56: ; preds = %32
%57 = load i32, i32* %1
ret i32 %57
}

LLVM IR (-O2):
@.str = [5 x i8] c"%4d \00"
define i32 @main() {
%1 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 0)
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 1)
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 2)
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 3)
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 5)
%6 = tail call i32 @putchar(i32 10)
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 5)
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 6)
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 7)
%10 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 8)
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 10)
%12 = tail call i32 @putchar(i32 10)
%13 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 10)
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 11)
%15 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 12)
%16 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 13)
%17 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 15)
%18 = tail call i32 @putchar(i32 10)
%19 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 15)
%20 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 16)
%21 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 17)
%22 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 18)
%23 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 19)
%24 = tail call i32 @putchar(i32 10)
ret i32 0
}