#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__ test__ffsdi2(int, int);
int main() {
  if (test__ffsdi2(0x00000000, 0))
    return 1;
  if (test__ffsdi2(0x00000001, 1))
    return 1;
  if (test__ffsdi2(0x00000002, 2))
    return 1;
  if (test__ffsdi2(0x00000003, 1))
    return 1;
  if (test__ffsdi2(0x00000004, 3))
    return 1;
  if (test__ffsdi2(0x00000005, 1))
    return 1;
  if (test__ffsdi2(0x0000000A, 2))
    return 1;
  if (test__ffsdi2(0x10000000, 29))
    return 1;
  if (test__ffsdi2(0x20000000, 30))
    return 1;
  if (test__ffsdi2(0x60000000, 30))
    return 1;
  if (test__ffsdi2(0x80000000uLL, 32))
    return 1;
  if (test__ffsdi2(0x0000050000000000uLL, 41))
    return 1;
  if (test__ffsdi2(0x0200080000000000uLL, 44))
    return 1;
  if (test__ffsdi2(0x7200000000000000uLL, 58))
    return 1;
  if (test__ffsdi2(0x8000000000000000uLL, 64))
    return 1;
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
xor    %esi,%esi
mov    %esi,%edi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     113e <main+0x2e>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
mov    $0x1,%esi
mov    %esi,%edi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     1160 <main+0x50>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
mov    $0x2,%esi
mov    %esi,%edi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     1182 <main+0x72>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
mov    $0x3,%edi
mov    $0x1,%esi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     11a7 <main+0x97>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
mov    $0x4,%edi
mov    $0x3,%esi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     11cc <main+0xbc>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
mov    $0x5,%edi
mov    $0x1,%esi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     11f1 <main+0xe1>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
mov    $0xa,%edi
mov    $0x2,%esi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     1216 <main+0x106>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
mov    $0x10000000,%edi
mov    $0x1d,%esi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     123b <main+0x12b>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
mov    $0x20000000,%edi
mov    $0x1e,%esi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     1260 <main+0x150>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
mov    $0x60000000,%edi
mov    $0x1e,%esi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     1285 <main+0x175>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
mov    $0x80000000,%edi
mov    $0x20,%esi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     12aa <main+0x19a>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
xor    %edi,%edi
mov    $0x29,%esi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     12cc <main+0x1bc>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
xor    %edi,%edi
mov    $0x2c,%esi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     12ee <main+0x1de>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
xor    %edi,%edi
mov    $0x3a,%esi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     1310 <main+0x200>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
xor    %edi,%edi
mov    $0x40,%esi
call   1030 <test__ffsdi2@plt>
cmp    $0x0,%rax
je     1332 <main+0x222>
movl   $0x1,-0x4(%rbp)
jmp    1339 <main+0x229>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
xor    %edi,%edi
xor    %esi,%esi
call   1030 <test__ffsdi2@plt>
mov    $0x1,%ebx
test   %rax,%rax
jne    1262 <main+0x152>
mov    $0x1,%ebx
mov    $0x1,%edi
mov    $0x1,%esi
call   1030 <test__ffsdi2@plt>
test   %rax,%rax
jne    1262 <main+0x152>
mov    $0x2,%edi
mov    $0x2,%esi
call   1030 <test__ffsdi2@plt>
test   %rax,%rax
jne    1262 <main+0x152>
mov    $0x1,%ebx
mov    $0x3,%edi
mov    $0x1,%esi
call   1030 <test__ffsdi2@plt>
test   %rax,%rax
jne    1262 <main+0x152>
mov    $0x4,%edi
mov    $0x3,%esi
call   1030 <test__ffsdi2@plt>
test   %rax,%rax
jne    1262 <main+0x152>
mov    $0x1,%ebx
mov    $0x5,%edi
mov    $0x1,%esi
call   1030 <test__ffsdi2@plt>
test   %rax,%rax
jne    1262 <main+0x152>
mov    $0xa,%edi
mov    $0x2,%esi
call   1030 <test__ffsdi2@plt>
test   %rax,%rax
jne    1262 <main+0x152>
mov    $0x10000000,%edi
mov    $0x1d,%esi
call   1030 <test__ffsdi2@plt>
test   %rax,%rax
jne    1262 <main+0x152>
mov    $0x20000000,%edi
mov    $0x1e,%esi
call   1030 <test__ffsdi2@plt>
test   %rax,%rax
jne    1262 <main+0x152>
mov    $0x60000000,%edi
mov    $0x1e,%esi
call   1030 <test__ffsdi2@plt>
test   %rax,%rax
jne    1262 <main+0x152>
mov    $0x80000000,%edi
mov    $0x20,%esi
call   1030 <test__ffsdi2@plt>
test   %rax,%rax
jne    1262 <main+0x152>
xor    %edi,%edi
mov    $0x29,%esi
call   1030 <test__ffsdi2@plt>
test   %rax,%rax
jne    1262 <main+0x152>
xor    %edi,%edi
mov    $0x2c,%esi
call   1030 <test__ffsdi2@plt>
test   %rax,%rax
jne    1262 <main+0x152>
xor    %edi,%edi
mov    $0x3a,%esi
call   1030 <test__ffsdi2@plt>
test   %rax,%rax
jne    1262 <main+0x152>
xor    %edi,%edi
mov    $0x40,%esi
call   1030 <test__ffsdi2@plt>
xor    %ebx,%ebx
test   %rax,%rax
setne  %bl
mov    %ebx,%eax
pop    %rbx
ret

LLVM IR (-O0):
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call i64 @test__ffsdi2(i32 0, i32 0)
%3 = icmp ne i64 %2, 0
br i1 %3, label %4, label %5
4: ; preds = %0
store i32 1, i32* %1
br label %62
5: ; preds = %0
%6 = call i64 @test__ffsdi2(i32 1, i32 1)
%7 = icmp ne i64 %6, 0
br i1 %7, label %8, label %9
8: ; preds = %5
store i32 1, i32* %1
br label %62
9: ; preds = %5
%10 = call i64 @test__ffsdi2(i32 2, i32 2)
%11 = icmp ne i64 %10, 0
br i1 %11, label %12, label %13
12: ; preds = %9
store i32 1, i32* %1
br label %62
13: ; preds = %9
%14 = call i64 @test__ffsdi2(i32 3, i32 1)
%15 = icmp ne i64 %14, 0
br i1 %15, label %16, label %17
16: ; preds = %13
store i32 1, i32* %1
br label %62
17: ; preds = %13
%18 = call i64 @test__ffsdi2(i32 4, i32 3)
%19 = icmp ne i64 %18, 0
br i1 %19, label %20, label %21
20: ; preds = %17
store i32 1, i32* %1
br label %62
21: ; preds = %17
%22 = call i64 @test__ffsdi2(i32 5, i32 1)
%23 = icmp ne i64 %22, 0
br i1 %23, label %24, label %25
24: ; preds = %21
store i32 1, i32* %1
br label %62
25: ; preds = %21
%26 = call i64 @test__ffsdi2(i32 10, i32 2)
%27 = icmp ne i64 %26, 0
br i1 %27, label %28, label %29
28: ; preds = %25
store i32 1, i32* %1
br label %62
29: ; preds = %25
%30 = call i64 @test__ffsdi2(i32 268435456, i32 29)
%31 = icmp ne i64 %30, 0
br i1 %31, label %32, label %33
32: ; preds = %29
store i32 1, i32* %1
br label %62
33: ; preds = %29
%34 = call i64 @test__ffsdi2(i32 536870912, i32 30)
%35 = icmp ne i64 %34, 0
br i1 %35, label %36, label %37
36: ; preds = %33
store i32 1, i32* %1
br label %62
37: ; preds = %33
%38 = call i64 @test__ffsdi2(i32 1610612736, i32 30)
%39 = icmp ne i64 %38, 0
br i1 %39, label %40, label %41
40: ; preds = %37
store i32 1, i32* %1
br label %62
41: ; preds = %37
%42 = call i64 @test__ffsdi2(i32 -2147483648, i32 32)
%43 = icmp ne i64 %42, 0
br i1 %43, label %44, label %45
44: ; preds = %41
store i32 1, i32* %1
br label %62
45: ; preds = %41
%46 = call i64 @test__ffsdi2(i32 0, i32 41)
%47 = icmp ne i64 %46, 0
br i1 %47, label %48, label %49
48: ; preds = %45
store i32 1, i32* %1
br label %62
49: ; preds = %45
%50 = call i64 @test__ffsdi2(i32 0, i32 44)
%51 = icmp ne i64 %50, 0
br i1 %51, label %52, label %53
52: ; preds = %49
store i32 1, i32* %1
br label %62
53: ; preds = %49
%54 = call i64 @test__ffsdi2(i32 0, i32 58)
%55 = icmp ne i64 %54, 0
br i1 %55, label %56, label %57
56: ; preds = %53
store i32 1, i32* %1
br label %62
57: ; preds = %53
%58 = call i64 @test__ffsdi2(i32 0, i32 64)
%59 = icmp ne i64 %58, 0
br i1 %59, label %60, label %61
60: ; preds = %57
store i32 1, i32* %1
br label %62
61: ; preds = %57
store i32 0, i32* %1
br label %62
62: ; preds = %61, %60, %56, %52, %48, %44, %40, %36, %32, %28, %24, %20, %16, %12, %8, %4
%63 = load i32, i32* %1
ret i32 %63
}

LLVM IR (-O2):
define i32 @main() {
%1 = tail call i64 @test__ffsdi2(i32 0, i32 0)
%2 = icmp eq i64 %1, 0
br i1 %2, label %3, label %46
3: ; preds = %0
%4 = tail call i64 @test__ffsdi2(i32 1, i32 1)
%5 = icmp eq i64 %4, 0
br i1 %5, label %6, label %46
6: ; preds = %3
%7 = tail call i64 @test__ffsdi2(i32 2, i32 2)
%8 = icmp eq i64 %7, 0
br i1 %8, label %9, label %46
9: ; preds = %6
%10 = tail call i64 @test__ffsdi2(i32 3, i32 1)
%11 = icmp eq i64 %10, 0
br i1 %11, label %12, label %46
12: ; preds = %9
%13 = tail call i64 @test__ffsdi2(i32 4, i32 3)
%14 = icmp eq i64 %13, 0
br i1 %14, label %15, label %46
15: ; preds = %12
%16 = tail call i64 @test__ffsdi2(i32 5, i32 1)
%17 = icmp eq i64 %16, 0
br i1 %17, label %18, label %46
18: ; preds = %15
%19 = tail call i64 @test__ffsdi2(i32 10, i32 2)
%20 = icmp eq i64 %19, 0
br i1 %20, label %21, label %46
21: ; preds = %18
%22 = tail call i64 @test__ffsdi2(i32 268435456, i32 29)
%23 = icmp eq i64 %22, 0
br i1 %23, label %24, label %46
24: ; preds = %21
%25 = tail call i64 @test__ffsdi2(i32 536870912, i32 30)
%26 = icmp eq i64 %25, 0
br i1 %26, label %27, label %46
27: ; preds = %24
%28 = tail call i64 @test__ffsdi2(i32 1610612736, i32 30)
%29 = icmp eq i64 %28, 0
br i1 %29, label %30, label %46
30: ; preds = %27
%31 = tail call i64 @test__ffsdi2(i32 -2147483648, i32 32)
%32 = icmp eq i64 %31, 0
br i1 %32, label %33, label %46
33: ; preds = %30
%34 = tail call i64 @test__ffsdi2(i32 0, i32 41)
%35 = icmp eq i64 %34, 0
br i1 %35, label %36, label %46
36: ; preds = %33
%37 = tail call i64 @test__ffsdi2(i32 0, i32 44)
%38 = icmp eq i64 %37, 0
br i1 %38, label %39, label %46
39: ; preds = %36
%40 = tail call i64 @test__ffsdi2(i32 0, i32 58)
%41 = icmp eq i64 %40, 0
br i1 %41, label %42, label %46
42: ; preds = %39
%43 = tail call i64 @test__ffsdi2(i32 0, i32 64)
%44 = icmp ne i64 %43, 0
%45 = zext i1 %44 to i32
br label %46
46: ; preds = %42, %39, %36, %33, %30, %27, %24, %21, %18, %15, %12, %9, %6, %3, %0
%47 = phi i32 [ 1, %0 ], [ 1, %3 ], [ 1, %6 ], [ 1, %9 ], [ 1, %12 ], [ 1, %15 ], [ 1, %18 ], [ 1, %21 ], [ 1, %24 ], [ 1, %27 ], [ 1, %30 ], [ 1, %33 ], [ 1, %36 ], [ 1, %39 ], [ %45, %42 ]
ret i32 %47
}