#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 *, ...);
int /*<<< orphan*/ test_not_overflow();
int /*<<< orphan*/ test_overflow();
int main() {
  int counter = 0;
  if (!test_overflow()) {
    counter++;
    printf("Overflow test failed!\n");
  }
  if (!test_not_overflow()) {
    counter++;
    printf("Not overflow test failed!\n");
  }
  printf("%d tests failed.\n", counter);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
mov    $0x0,%al
call   1040 <test_overflow@plt>
cmp    $0x0,%eax
jne    116d <main+0x3d>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
lea    0xe9a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    $0x0,%al
call   1050 <test_not_overflow@plt>
cmp    $0x0,%eax
jne    1194 <main+0x64>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
lea    0xe8a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%esi
lea    0xe94(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
xor    %ebx,%ebx
xor    %eax,%eax
call   1050 <test_overflow@plt>
test   %eax,%eax
jne    115f <main+0x1f>
lea    0xebd(%rip),%rdi
call   1030 <puts@plt>
mov    $0x1,%ebx
xor    %eax,%eax
call   1060 <test_not_overflow@plt>
test   %eax,%eax
jne    1179 <main+0x39>
add    $0x1,%ebx
lea    0xeb4(%rip),%rdi
call   1030 <puts@plt>
lea    0xe80(%rip),%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [23 x i8] c"Overflow test failed!\0A\00"
@.str.1 = [27 x i8] c"Not overflow test failed!\0A\00"
@.str.2 = [18 x i8] c"%d tests failed.\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
%3 = call i32 (...) @test_overflow()
%4 = icmp ne i32 %3, 0
br i1 %4, label %9, label %5
5: ; preds = %0
%6 = load i32, i32* %2
%7 = add nsw i32 %6, 1
store i32 %7, i32* %2
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
br label %9
9: ; preds = %5, %0
%10 = call i32 (...) @test_not_overflow()
%11 = icmp ne i32 %10, 0
br i1 %11, label %16, label %12
12: ; preds = %9
%13 = load i32, i32* %2
%14 = add nsw i32 %13, 1
store i32 %14, i32* %2
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.1, i64 0, i64 0))
br label %16
16: ; preds = %12, %9
%17 = load i32, i32* %2
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0), i32 %17)
%19 = load i32, i32* %1
ret i32 %19
}

LLVM IR (-O2):
@.str.2 = [18 x i8] c"%d tests failed.\0A\00"
@str = [22 x i8] c"Overflow test failed!\00"
@str.3 = [26 x i8] c"Not overflow test failed!\00"
define i32 @main() {
%1 = tail call i32 (...) @test_overflow()
%2 = icmp eq i32 %1, 0
br i1 %2, label %3, label %5
3: ; preds = %0
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @str, i64 0, i64 0))
br label %5
5: ; preds = %3, %0
%6 = phi i32 [ 0, %0 ], [ 1, %3 ]
%7 = tail call i32 (...) @test_not_overflow()
%8 = icmp eq i32 %7, 0
br i1 %8, label %9, label %12
9: ; preds = %5
%10 = add nuw nsw i32 %6, 1
%11 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @str.3, i64 0, i64 0))
br label %12
12: ; preds = %9, %5
%13 = phi i32 [ %6, %5 ], [ %10, %9 ]
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0), i32 %13)
ret i32 0
}