#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(double **m, int rows, int cols) {
  printf("printing matrix\n");
  for (int i = 0; i < rows; i++) {
    for (int j = 0; j < cols; j++) {
      printf("%lf ", m[j][i]);
    }
    printf("\n");
  }
}


x86 assembly (clang, -O0):
<print_matrix>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
mov    %edx,-0x10(%rbp)
lea    0xed7(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    11a3 <print_matrix+0x93>
movl   $0x0,-0x18(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x10(%rbp),%eax
jge    1187 <print_matrix+0x77>
mov    -0x8(%rbp),%rax
movslq -0x18(%rbp),%rcx
mov    (%rax,%rcx,8),%rax
movslq -0x14(%rbp),%rcx
movsd  (%rax,%rcx,8),%xmm0
lea    0xe9f(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    114a <print_matrix+0x3a>
lea    0xe81(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1137 <print_matrix+0x27>
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    %edx,0x4(%rsp)
mov    %esi,%ebp
mov    %rdi,%r13
lea    0xeba(%rip),%rdi
call   1040 <puts@plt>
test   %ebp,%ebp
jle    11af <print_matrix+0x7f>
mov    %ebp,%r15d
mov    0x4(%rsp),%ebp
xor    %ebx,%ebx
lea    0xe9c(%rip),%r12
jmp    1183 <print_matrix+0x53>
cs nopw 0x0(%rax,%rax,1)
mov    $0xa,%edi
call   1030 <putchar@plt>
add    $0x1,%rbx
cmp    %r15,%rbx
je     11af <print_matrix+0x7f>
cmpl   $0x0,0x4(%rsp)
jle    1170 <print_matrix+0x40>
xor    %r14d,%r14d
nopl   (%rax)
mov    0x0(%r13,%r14,8),%rax
movsd  (%rax,%rbx,8),%xmm0
mov    %r12,%rdi
mov    $0x1,%al
call   1050 <printf@plt>
add    $0x1,%r14
cmp    %r14,%rbp
jne    1190 <print_matrix+0x60>
jmp    1170 <print_matrix+0x40>
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

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

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