#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 assertEmptyCount(int *, int);
int sudoku_classic(int *, int);
char *test_sudoku_classic() {
  static int actual[81] = {4, 9, 2, 3, 6, 8, 1, 7, 5, 8, 7, 6, 9, 5, 1, 2, 3,
                           4, 3, 1, 5, 2, 7, 4, 6, 8, 9, 9, 3, 4, 1, 2, 7, 8,
                           5, 6, 2, 5, 7, 8, 3, 6, 9, 4, 1, 1, 6, 8, 4, 9, 5,
                           3, 2, 7, 5, 2, 1, 6, 4, 3, 7, 9, 8, 7, 8, 3, 5, 1,
                           9, 4, 6, 2, 6, 4, 9, 7, 8, 2, 5, 1, 3};
  int result = sudoku_classic(actual, 5);
  int emptyCount = assertEmptyCount(actual, 81);
  do {
    if (!(result && emptyCount == 5))
      return "e: test_sudoku_classic()";
  } while (0);
  return 0;
}


x86 assembly (clang, -O0):
<test_sudoku_classic>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0x2f11(%rip),%rdi
mov    $0x5,%esi
call   1030 <sudoku_classic@plt>
mov    %eax,-0xc(%rbp)
lea    0x2efd(%rip),%rdi
mov    $0x51,%esi
call   1040 <assertEmptyCount@plt>
mov    %eax,-0x10(%rbp)
cmpl   $0x0,-0xc(%rbp)
je     1164 <test_sudoku_classic+0x44>
cmpl   $0x5,-0x10(%rbp)
je     1174 <test_sudoku_classic+0x54>
lea    0xe95(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1181 <test_sudoku_classic+0x61>
jmp    1179 <test_sudoku_classic+0x59>
movq   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%rax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<test_sudoku_classic>:
push   %rbp
push   %rbx
push   %rax
lea    0x2f16(%rip),%rbx
mov    %rbx,%rdi
mov    $0x5,%esi
call   1030 <sudoku_classic@plt>
mov    %eax,%ebp
mov    %rbx,%rdi
mov    $0x51,%esi
call   1040 <assertEmptyCount@plt>
xor    %ecx,%ecx
cmp    $0x5,%eax
lea    0xeae(%rip),%rax
cmovne %rax,%rcx
test   %ebp,%ebp
cmove  %rax,%rcx
mov    %rcx,%rax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@test_sudoku_classic.actual = internal global [81 x i32] [i32 4, i32 9, i32 2, i32 3, i32 6, i32 8, i32 1, i32 7, i32 5, i32 8, i32 7, i32 6, i32 9, i32 5, i32 1, i32 2, i32 3, i32 4, i32 3, i32 1, i32 5, i32 2, i32 7, i32 4, i32 6, i32 8, i32 9, i32 9, i32 3, i32 4, i32 1, i32 2, i32 7, i32 8, i32 5, i32 6, i32 2, i32 5, i32 7, i32 8, i32 3, i32 6, i32 9, i32 4, i32 1, i32 1, i32 6, i32 8, i32 4, i32 9, i32 5, i32 3, i32 2, i32 7, i32 5, i32 2, i32 1, i32 6, i32 4, i32 3, i32 7, i32 9, i32 8, i32 7, i32 8, i32 3, i32 5, i32 1, i32 9, i32 4, i32 6, i32 2, i32 6, i32 4, i32 9, i32 7, i32 8, i32 2, i32 5, i32 1, i32 3]
@.str = [25 x i8] c"e: test_sudoku_classic()\00"
define i8* @test_sudoku_classic() {
%1 = alloca i8*
%2 = alloca i32
%3 = alloca i32
%4 = call i32 @sudoku_classic(i32* getelementptr inbounds ([81 x i32], [81 x i32]* @test_sudoku_classic.actual, i64 0, i64 0), i32 5)
store i32 %4, i32* %2
%5 = call i32 @assertEmptyCount(i32* getelementptr inbounds ([81 x i32], [81 x i32]* @test_sudoku_classic.actual, i64 0, i64 0), i32 81)
store i32 %5, i32* %3
br label %6
6: ; preds = %0
%7 = load i32, i32* %2
%8 = icmp ne i32 %7, 0
br i1 %8, label %9, label %12
9: ; preds = %6
%10 = load i32, i32* %3
%11 = icmp eq i32 %10, 5
br i1 %11, label %13, label %12
12: ; preds = %9, %6
store i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0), i8** %1
br label %15
13: ; preds = %9
br label %14
14: ; preds = %13
store i8* null, i8** %1
br label %15
15: ; preds = %14, %12
%16 = load i8*, i8** %1
ret i8* %16
}

LLVM IR (-O2):
@test_sudoku_classic.actual = internal global [81 x i32] [i32 4, i32 9, i32 2, i32 3, i32 6, i32 8, i32 1, i32 7, i32 5, i32 8, i32 7, i32 6, i32 9, i32 5, i32 1, i32 2, i32 3, i32 4, i32 3, i32 1, i32 5, i32 2, i32 7, i32 4, i32 6, i32 8, i32 9, i32 9, i32 3, i32 4, i32 1, i32 2, i32 7, i32 8, i32 5, i32 6, i32 2, i32 5, i32 7, i32 8, i32 3, i32 6, i32 9, i32 4, i32 1, i32 1, i32 6, i32 8, i32 4, i32 9, i32 5, i32 3, i32 2, i32 7, i32 5, i32 2, i32 1, i32 6, i32 4, i32 3, i32 7, i32 9, i32 8, i32 7, i32 8, i32 3, i32 5, i32 1, i32 9, i32 4, i32 6, i32 2, i32 6, i32 4, i32 9, i32 7, i32 8, i32 2, i32 5, i32 1, i32 3]
@.str = [25 x i8] c"e: test_sudoku_classic()\00"
define i8* @test_sudoku_classic() {
%1 = tail call i32 @sudoku_classic(i32* getelementptr inbounds ([81 x i32], [81 x i32]* @test_sudoku_classic.actual, i64 0, i64 0), i32 5)
%2 = tail call i32 @assertEmptyCount(i32* getelementptr inbounds ([81 x i32], [81 x i32]* @test_sudoku_classic.actual, i64 0, i64 0), i32 81)
%3 = icmp ne i32 %1, 0
%4 = icmp eq i32 %2, 5
%5 = select i1 %3, i1 %4, i1 false
%6 = select i1 %5, i8* null, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0)
ret i8* %6
}