#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 i, j;
  for (i = 0; i < 4; i++) {
    for (j = 0; j < 4; j++) {
      printf("%10g ", M[i][j]);
    }
    printf("\n");
  }
}


x86 assembly (clang, -O0):
<print_matrix>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
cmpl   $0x4,-0xc(%rbp)
jge    118b <print_matrix+0x7b>
movl   $0x0,-0x10(%rbp)
cmpl   $0x4,-0x10(%rbp)
jge    116f <print_matrix+0x5f>
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
mov    (%rax,%rcx,8),%rax
movslq -0x10(%rbp),%rcx
movsd  (%rax,%rcx,8),%xmm0
lea    0xea6(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1134 <print_matrix+0x24>
lea    0xe90(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1123 <print_matrix+0x13>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<print_matrix>:
push   %r14
push   %rbx
push   %rax
mov    %rdi,%rbx
mov    (%rdi),%rax
movsd  (%rax),%xmm0
lea    0xecb(%rip),%r14
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    (%rbx),%rax
movsd  0x8(%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    (%rbx),%rax
movsd  0x10(%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    (%rbx),%rax
movsd  0x18(%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    0x8(%rbx),%rax
movsd  (%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    0x8(%rbx),%rax
movsd  0x8(%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    0x8(%rbx),%rax
movsd  0x10(%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    0x8(%rbx),%rax
movsd  0x18(%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    0x10(%rbx),%rax
movsd  (%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    0x10(%rbx),%rax
movsd  0x8(%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    0x10(%rbx),%rax
movsd  0x10(%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    0x10(%rbx),%rax
movsd  0x18(%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    0x18(%rbx),%rax
movsd  (%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    0x18(%rbx),%rax
movsd  0x8(%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    0x18(%rbx),%rax
movsd  0x10(%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    0x18(%rbx),%rax
movsd  0x18(%rax),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    $0xa,%edi
add    $0x8,%rsp
pop    %rbx
pop    %r14
jmp    1030 <putchar@plt>

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

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