#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 *, ...);
void print_matrix(char *description, int **M, int nx, int ny) {
  int i, j;
  printf("%s:\n", description);
  for (j = 0; j < ny; j++) {
    for (i = 0; i < nx; i++) {
      printf("%d ", M[i][j]);
    }
    printf("\n");
  }
}


x86 assembly (clang, -O0):
<print_matrix>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    %edx,-0x14(%rbp)
mov    %ecx,-0x18(%rbp)
mov    -0x8(%rbp),%rsi
lea    0xecf(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x20(%rbp)
mov    -0x20(%rbp),%eax
cmp    -0x18(%rbp),%eax
jge    11a9 <print_matrix+0x99>
movl   $0x0,-0x1c(%rbp)
mov    -0x1c(%rbp),%eax
cmp    -0x14(%rbp),%eax
jge    118d <print_matrix+0x7d>
mov    -0x10(%rbp),%rax
movslq -0x1c(%rbp),%rcx
mov    (%rax,%rcx,8),%rax
movslq -0x20(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xe8d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x1c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x1c(%rbp)
jmp    1152 <print_matrix+0x42>
lea    0xe6f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x20(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x20(%rbp)
jmp    113f <print_matrix+0x2f>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<print_matrix>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
mov    %ecx,%ebp
mov    %edx,0x4(%rsp)
mov    %rsi,%r13
mov    %rdi,%rsi
lea    0xec2(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
test   %ebp,%ebp
jle    119d <print_matrix+0x7d>
mov    %ebp,%r15d
mov    0x4(%rsp),%ebp
lea    0xeae(%rip),%r12
xor    %ebx,%ebx
jmp    1173 <print_matrix+0x53>
nopl   0x0(%rax,%rax,1)
mov    $0xa,%edi
call   1030 <putchar@plt>
add    $0x1,%rbx
cmp    %r15,%rbx
je     119d <print_matrix+0x7d>
cmpl   $0x0,0x4(%rsp)
jle    1160 <print_matrix+0x40>
xor    %r14d,%r14d
nopl   (%rax)
mov    0x0(%r13,%r14,8),%rax
mov    (%rax,%rbx,4),%esi
mov    %r12,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x1,%r14
cmp    %r14,%rbp
jne    1180 <print_matrix+0x60>
jmp    1160 <print_matrix+0x40>
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

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

LLVM IR (-O2):
@.str = [5 x i8] c"%s:\0A\00"
@.str.1 = [4 x i8] c"%d \00"
define void @print_matrix(i8* %0, i32** nocapture %1, i32 %2, i32 %3) {
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8* %0)
%6 = icmp sgt i32 %3, 0
br i1 %6, label %7, label %26
7: ; preds = %4
%8 = icmp sgt i32 %2, 0
%9 = zext i32 %3 to i64
%10 = zext i32 %2 to i64
br label %11
11: ; preds = %7, %22
%12 = phi i64 [ 0, %7 ], [ %24, %22 ]
br i1 %8, label %13, label %22
13: ; preds = %11, %13
%14 = phi i64 [ %20, %13 ], [ 0, %11 ]
%15 = getelementptr inbounds i32*, i32** %1, i64 %14
%16 = load i32*, i32** %15
%17 = getelementptr inbounds i32, i32* %16, i64 %12
%18 = load i32, i32* %17
%19 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %18)
%20 = add nuw nsw i64 %14, 1
%21 = icmp eq i64 %20, %10
br i1 %21, label %22, label %13
22: ; preds = %13, %11
%23 = tail call i32 @putchar(i32 10)
%24 = add nuw nsw i64 %12, 1
%25 = icmp eq i64 %24, %9
br i1 %25, label %26, label %11
26: ; preds = %22, %4
ret void
}