#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 **generateMatrix(int);
int /*<<< orphan*/ printf(char *, ...);
int main(int argc, char *argv[]) {
  int n = 4;
  int **ret = generateMatrix(n);
  int i, j;
  for (i = 0; i < n; i++) {
    for (j = 0; j < n; j++)
      printf("%d ", ret[i][j]);
    printf("\n");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
movl   $0x4,-0x14(%rbp)
mov    -0x14(%rbp),%edi
call   1040 <generateMatrix@plt>
mov    %rax,-0x20(%rbp)
movl   $0x0,-0x24(%rbp)
mov    -0x24(%rbp),%eax
cmp    -0x14(%rbp),%eax
jge    11ba <main+0x9a>
movl   $0x0,-0x28(%rbp)
mov    -0x28(%rbp),%eax
cmp    -0x14(%rbp),%eax
jge    119e <main+0x7e>
mov    -0x20(%rbp),%rax
movslq -0x24(%rbp),%rcx
mov    (%rax,%rcx,8),%rax
movslq -0x28(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xe77(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x28(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x28(%rbp)
jmp    1163 <main+0x43>
lea    0xe5f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x24(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x24(%rbp)
jmp    1150 <main+0x30>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
mov    $0x4,%edi
call   1050 <generateMatrix@plt>
mov    %rax,%rbx
mov    (%rax),%rax
mov    (%rax),%esi
lea    0xeb3(%rip),%r14
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    (%rbx),%rax
mov    0x4(%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    (%rbx),%rax
mov    0x8(%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    (%rbx),%rax
mov    0xc(%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    0x8(%rbx),%rax
mov    (%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x8(%rbx),%rax
mov    0x4(%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x8(%rbx),%rax
mov    0x8(%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x8(%rbx),%rax
mov    0xc(%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    0x10(%rbx),%rax
mov    (%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x10(%rbx),%rax
mov    0x4(%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x10(%rbx),%rax
mov    0x8(%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x10(%rbx),%rax
mov    0xc(%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    0x18(%rbx),%rax
mov    (%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x18(%rbx),%rax
mov    0x4(%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x18(%rbx),%rax
mov    0x8(%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x18(%rbx),%rax
mov    0xc(%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

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

LLVM IR (-O2):
@.str = [4 x i8] c"%d \00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = tail call i32** @generateMatrix(i32 4)
%4 = load i32*, i32** %3
%5 = load i32, i32* %4
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %5)
%7 = load i32*, i32** %3
%8 = getelementptr inbounds i32, i32* %7, i64 1
%9 = load i32, i32* %8
%10 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %9)
%11 = load i32*, i32** %3
%12 = getelementptr inbounds i32, i32* %11, i64 2
%13 = load i32, i32* %12
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %13)
%15 = load i32*, i32** %3
%16 = getelementptr inbounds i32, i32* %15, i64 3
%17 = load i32, i32* %16
%18 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %17)
%19 = tail call i32 @putchar(i32 10)
%20 = getelementptr inbounds i32*, i32** %3, i64 1
%21 = load i32*, i32** %20
%22 = load i32, i32* %21
%23 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %22)
%24 = load i32*, i32** %20
%25 = getelementptr inbounds i32, i32* %24, i64 1
%26 = load i32, i32* %25
%27 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %26)
%28 = load i32*, i32** %20
%29 = getelementptr inbounds i32, i32* %28, i64 2
%30 = load i32, i32* %29
%31 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %30)
%32 = load i32*, i32** %20
%33 = getelementptr inbounds i32, i32* %32, i64 3
%34 = load i32, i32* %33
%35 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %34)
%36 = tail call i32 @putchar(i32 10)
%37 = getelementptr inbounds i32*, i32** %3, i64 2
%38 = load i32*, i32** %37
%39 = load i32, i32* %38
%40 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %39)
%41 = load i32*, i32** %37
%42 = getelementptr inbounds i32, i32* %41, i64 1
%43 = load i32, i32* %42
%44 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %43)
%45 = load i32*, i32** %37
%46 = getelementptr inbounds i32, i32* %45, i64 2
%47 = load i32, i32* %46
%48 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %47)
%49 = load i32*, i32** %37
%50 = getelementptr inbounds i32, i32* %49, i64 3
%51 = load i32, i32* %50
%52 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %51)
%53 = tail call i32 @putchar(i32 10)
%54 = getelementptr inbounds i32*, i32** %3, i64 3
%55 = load i32*, i32** %54
%56 = load i32, i32* %55
%57 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %56)
%58 = load i32*, i32** %54
%59 = getelementptr inbounds i32, i32* %58, i64 1
%60 = load i32, i32* %59
%61 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %60)
%62 = load i32*, i32** %54
%63 = getelementptr inbounds i32, i32* %62, i64 2
%64 = load i32, i32* %63
%65 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %64)
%66 = load i32*, i32** %54
%67 = getelementptr inbounds i32, i32* %66, i64 3
%68 = load i32, i32* %67
%69 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %68)
%70 = tail call i32 @putchar(i32 10)
ret i32 0
}