#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 */
scalar_t__ rand();
void random_matrix_double_2d(double **a, const unsigned int rows,
                             const unsigned int cols) {
  for (unsigned int r = 0; r < rows; r++) {
    for (unsigned int c = 0; c < cols; c++) {
      a[r][c] = (double)rand();
    }
  }
}


x86 assembly (clang, -O0):
<random_matrix_double_2d>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
mov    %edx,-0x10(%rbp)
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0xc(%rbp),%eax
jae    1188 <random_matrix_double_2d+0x78>
movl   $0x0,-0x18(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x10(%rbp),%eax
jae    1175 <random_matrix_double_2d+0x65>
mov    $0x0,%al
call   1030 <rand@plt>
cvtsi2sd %rax,%xmm0
mov    -0x8(%rbp),%rax
mov    -0x14(%rbp),%ecx
mov    (%rax,%rcx,8),%rax
mov    -0x18(%rbp),%ecx
movsd  %xmm0,(%rax,%rcx,8)
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    113c <random_matrix_double_2d+0x2c>
jmp    117a <random_matrix_double_2d+0x6a>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1129 <random_matrix_double_2d+0x19>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<random_matrix_double_2d>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
test   %esi,%esi
je     1163 <random_matrix_double_2d+0x53>
mov    %edx,%r14d
mov    %rdi,%r12
mov    %esi,%r15d
mov    %edx,%r13d
xor    %ebx,%ebx
jmp    1139 <random_matrix_double_2d+0x29>
nop
add    $0x1,%rbx
cmp    %r15,%rbx
je     1163 <random_matrix_double_2d+0x53>
test   %r14d,%r14d
je     1130 <random_matrix_double_2d+0x20>
xor    %ebp,%ebp
xor    %eax,%eax
call   1030 <rand@plt>
xorps  %xmm0,%xmm0
cvtsi2sd %rax,%xmm0
mov    (%r12,%rbx,8),%rax
movsd  %xmm0,(%rax,%rbp,8)
add    $0x1,%rbp
cmp    %rbp,%r13
jne    1140 <random_matrix_double_2d+0x30>
jmp    1130 <random_matrix_double_2d+0x20>
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
define void @random_matrix_double_2d(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
store i32 0, i32* %7
br label %9
9: ; preds = %33, %3
%10 = load i32, i32* %7
%11 = load i32, i32* %5
%12 = icmp ult i32 %10, %11
br i1 %12, label %13, label %36
13: ; preds = %9
store i32 0, i32* %8
br label %14
14: ; preds = %29, %13
%15 = load i32, i32* %8
%16 = load i32, i32* %6
%17 = icmp ult i32 %15, %16
br i1 %17, label %18, label %32
18: ; preds = %14
%19 = call i64 (...) @rand()
%20 = sitofp i64 %19 to double
%21 = load double**, double*** %4
%22 = load i32, i32* %7
%23 = zext i32 %22 to i64
%24 = getelementptr inbounds double*, double** %21, i64 %23
%25 = load double*, double** %24
%26 = load i32, i32* %8
%27 = zext i32 %26 to i64
%28 = getelementptr inbounds double, double* %25, i64 %27
store double %20, double* %28
br label %29
29: ; preds = %18
%30 = load i32, i32* %8
%31 = add i32 %30, 1
store i32 %31, i32* %8
br label %14
32: ; preds = %14
br label %33
33: ; preds = %32
%34 = load i32, i32* %7
%35 = add i32 %34, 1
store i32 %35, i32* %7
br label %9
36: ; preds = %9
ret void
}

LLVM IR (-O2):
define void @random_matrix_double_2d(double** nocapture %0, i32 %1, i32 %2) {
%4 = icmp eq i32 %1, 0
br i1 %4, label %13, label %5
5: ; preds = %3
%6 = icmp eq i32 %2, 0
%7 = zext i32 %1 to i64
%8 = zext i32 %2 to i64
br label %9
9: ; preds = %5, %14
%10 = phi i64 [ 0, %5 ], [ %15, %14 ]
br i1 %6, label %14, label %11
11: ; preds = %9
%12 = getelementptr inbounds double*, double** %0, i64 %10
br label %17
13: ; preds = %14, %3
ret void
14: ; preds = %17, %9
%15 = add nuw nsw i64 %10, 1
%16 = icmp eq i64 %15, %7
br i1 %16, label %13, label %9
17: ; preds = %11, %17
%18 = phi i64 [ 0, %11 ], [ %23, %17 ]
%19 = tail call i64 (...) @rand()
%20 = sitofp i64 %19 to double
%21 = load double*, double** %12
%22 = getelementptr inbounds double, double* %21, i64 %18
store double %20, double* %22
%23 = add nuw nsw i64 %18, 1
%24 = icmp eq i64 %23, %8
br i1 %24, label %14, label %17
}