#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*/ loop(int **, int /*<<< orphan*/, int /*<<< orphan*/, int,
                        int, int /*<<< orphan*/, int);
scalar_t__ malloc(int);
int **generateMatrix(int n) {
  int **matrix = (int **)malloc(n * sizeof(int *));
  for (int i = 0; i < n; i++) {
    matrix[i] = (int *)malloc(n * sizeof(int));
  }
  loop(matrix, 0, 0, n, n, 0, 1);
  return matrix;
}


x86 assembly (clang, -O0):
<generateMatrix>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %edi,-0x4(%rbp)
movslq -0x4(%rbp),%rax
shl    $0x3,%rax
mov    %eax,%edi
call   1040 <malloc@plt>
mov    %rax,-0x10(%rbp)
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x4(%rbp),%eax
jge    117d <generateMatrix+0x5d>
movslq -0x4(%rbp),%rax
shl    $0x2,%rax
mov    %eax,%edi
call   1040 <malloc@plt>
mov    %rax,%rdx
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    %rdx,(%rax,%rcx,8)
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1145 <generateMatrix+0x25>
mov    -0x10(%rbp),%rdi
mov    -0x4(%rbp),%ecx
mov    -0x4(%rbp),%r8d
xor    %r9d,%r9d
mov    %r9d,%esi
mov    %r9d,%edx
movl   $0x1,(%rsp)
call   1030 <loop@plt>
mov    -0x10(%rbp),%rax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<generateMatrix>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
sub    $0x10,%rsp
mov    %edi,%r14d
lea    0x0(,%r14,8),%edi
call   1040 <malloc@plt>
mov    %rax,%r15
test   %r14d,%r14d
jle    1175 <generateMatrix+0x55>
lea    0x0(,%r14,4),%r12d
mov    %r14d,%ebx
xor    %ebp,%ebp
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
mov    %r12d,%edi
call   1040 <malloc@plt>
mov    %rax,(%r15,%rbp,8)
add    $0x1,%rbp
cmp    %rbp,%rbx
jne    1160 <generateMatrix+0x40>
movl   $0x1,(%rsp)
mov    %r15,%rdi
xor    %esi,%esi
xor    %edx,%edx
mov    %r14d,%ecx
mov    %r14d,%r8d
xor    %r9d,%r9d
call   1030 <loop@plt>
mov    %r15,%rax
add    $0x10,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
define i32** @generateMatrix(i32 %0) {
%2 = alloca i32
%3 = alloca i32**
%4 = alloca i32
store i32 %0, i32* %2
%5 = load i32, i32* %2
%6 = sext i32 %5 to i64
%7 = mul i64 %6, 8
%8 = trunc i64 %7 to i32
%9 = call i64 @malloc(i32 %8)
%10 = inttoptr i64 %9 to i32**
store i32** %10, i32*** %3
store i32 0, i32* %4
br label %11
11: ; preds = %26, %1
%12 = load i32, i32* %4
%13 = load i32, i32* %2
%14 = icmp slt i32 %12, %13
br i1 %14, label %15, label %29
15: ; preds = %11
%16 = load i32, i32* %2
%17 = sext i32 %16 to i64
%18 = mul i64 %17, 4
%19 = trunc i64 %18 to i32
%20 = call i64 @malloc(i32 %19)
%21 = inttoptr i64 %20 to i32*
%22 = load i32**, i32*** %3
%23 = load i32, i32* %4
%24 = sext i32 %23 to i64
%25 = getelementptr inbounds i32*, i32** %22, i64 %24
store i32* %21, i32** %25
br label %26
26: ; preds = %15
%27 = load i32, i32* %4
%28 = add nsw i32 %27, 1
store i32 %28, i32* %4
br label %11
29: ; preds = %11
%30 = load i32**, i32*** %3
%31 = load i32, i32* %2
%32 = load i32, i32* %2
%33 = call i32 @loop(i32** %30, i32 0, i32 0, i32 %31, i32 %32, i32 0, i32 1)
%34 = load i32**, i32*** %3
ret i32** %34
}

LLVM IR (-O2):
define i32** @generateMatrix(i32 %0) {
%2 = shl i32 %0, 3
%3 = tail call i64 @malloc(i32 %2)
%4 = inttoptr i64 %3 to i32**
%5 = icmp sgt i32 %0, 0
br i1 %5, label %6, label %9
6: ; preds = %1
%7 = shl i32 %0, 2
%8 = zext i32 %0 to i64
br label %11
9: ; preds = %11, %1
%10 = tail call i32 @loop(i32** %4, i32 0, i32 0, i32 %0, i32 %0, i32 0, i32 1)
ret i32** %4
11: ; preds = %6, %11
%12 = phi i64 [ 0, %6 ], [ %16, %11 ]
%13 = tail call i64 @malloc(i32 %7)
%14 = inttoptr i64 %13 to i32*
%15 = getelementptr inbounds i32*, i32** %4, i64 %12
store i32* %14, i32** %15
%16 = add nuw nsw i64 %12, 1
%17 = icmp eq i64 %16, %8
br i1 %17, label %9, label %11
}