#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 */
typedef scalar_t__ pthread_key_t;

/* Variables and functions */
int /*<<< orphan*/ printf(char *, char *);
void *pthread_getspecific(scalar_t__);
int pthread_key_create(scalar_t__ *, int /*<<< orphan*/ *);
int pthread_key_delete(scalar_t__);
int pthread_setspecific(scalar_t__, void *);
int /*<<< orphan*/ puts(char *);
char *strerror(int);
int do_test(void) {
  pthread_key_t key1;
  pthread_key_t key2;
  void *value;
  int result = 0;
  int err;
  err = pthread_key_create(&key1, NULL);
  if (err != 0) {
    printf("1st key_create failed: %s\n", strerror(err));
    return 1;
  }
  value = pthread_getspecific(key1);
  if (value != NULL) {
    puts("1st getspecific != NULL");
    result = 1;
  }
  err = pthread_setspecific(key1, (void *)-2l);
  if (err != 0) {
    printf("1st setspecific failed: %s\n", strerror(err));
    return 1;
  }
  value = pthread_getspecific(key1);
  if (value == NULL) {
    puts("2nd getspecific == NULL\n");
    result = 1;
  } else if (value != (void *)-2l) {
    puts("2nd getspecific != -2l\n");
    result = 1;
  }
  err = pthread_setspecific(key1, (void *)-3l);
  if (err != 0) {
    printf("2nd setspecific failed: %s\n", strerror(err));
    return 1;
  }
  value = pthread_getspecific(key1);
  if (value == NULL) {
    puts("3rd getspecific == NULL\n");
    result = 1;
  } else if (value != (void *)-3l) {
    puts("3rd getspecific != -2l\n");
    result = 1;
  }
  err = pthread_key_delete(key1);
  if (err != 0) {
    printf("key_delete failed: %s\n", strerror(err));
    result = 1;
  }
  err = pthread_key_create(&key2, NULL);
  if (err != 0) {
    printf("2nd key_create failed: %s\n", strerror(err));
    return 1;
  }
  if (key1 != key2)
    puts("key1 != key2; no more tests performed");
  else {
    value = pthread_getspecific(key2);
    if (value != NULL) {
      puts("4th getspecific != NULL");
      result = 1;
    }
  }
  return result;
}


x86 assembly (clang, -O0):
<do_test>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x24(%rbp)
lea    -0x10(%rbp),%rdi
xor    %eax,%eax
mov    %eax,%esi
call   1060 <pthread_key_create@plt>
mov    %eax,-0x28(%rbp)
cmpl   $0x0,-0x28(%rbp)
je     11bc <do_test+0x4c>
mov    -0x28(%rbp),%edi
call   1080 <strerror@plt>
mov    %rax,%rsi
lea    0xe55(%rip),%rdi
call   1050 <printf@plt>
movl   $0x1,-0x4(%rbp)
jmp    13df <do_test+0x26f>
mov    -0x10(%rbp),%rdi
call   1040 <pthread_getspecific@plt>
mov    %rax,-0x20(%rbp)
cmpq   $0x0,-0x20(%rbp)
je     11e7 <do_test+0x77>
lea    0xe40(%rip),%rdi
call   1030 <puts@plt>
movl   $0x1,-0x24(%rbp)
mov    -0x10(%rbp),%rdi
mov    $0xfffffffffffffffe,%rsi
call   1090 <pthread_setspecific@plt>
mov    %eax,-0x28(%rbp)
cmpl   $0x0,-0x28(%rbp)
je     1227 <do_test+0xb7>
mov    -0x28(%rbp),%edi
call   1080 <strerror@plt>
mov    %rax,%rsi
lea    0xe1d(%rip),%rdi
call   1050 <printf@plt>
movl   $0x1,-0x4(%rbp)
jmp    13df <do_test+0x26f>
mov    -0x10(%rbp),%rdi
call   1040 <pthread_getspecific@plt>
mov    %rax,-0x20(%rbp)
cmpq   $0x0,-0x20(%rbp)
jne    1257 <do_test+0xe7>
lea    0xe09(%rip),%rdi
call   1030 <puts@plt>
movl   $0x1,-0x24(%rbp)
jmp    1280 <do_test+0x110>
mov    $0xfffffffffffffffe,%rax
cmp    %rax,-0x20(%rbp)
je     127b <do_test+0x10b>
lea    0xdf9(%rip),%rdi
call   1030 <puts@plt>
movl   $0x1,-0x24(%rbp)
jmp    1280 <do_test+0x110>
mov    -0x10(%rbp),%rdi
mov    $0xfffffffffffffffd,%rsi
call   1090 <pthread_setspecific@plt>
mov    %eax,-0x28(%rbp)
cmpl   $0x0,-0x28(%rbp)
je     12c0 <do_test+0x150>
mov    -0x28(%rbp),%edi
call   1080 <strerror@plt>
mov    %rax,%rsi
lea    0xdd1(%rip),%rdi
call   1050 <printf@plt>
movl   $0x1,-0x4(%rbp)
jmp    13df <do_test+0x26f>
mov    -0x10(%rbp),%rdi
call   1040 <pthread_getspecific@plt>
mov    %rax,-0x20(%rbp)
cmpq   $0x0,-0x20(%rbp)
jne    12f0 <do_test+0x180>
lea    0xdbd(%rip),%rdi
call   1030 <puts@plt>
movl   $0x1,-0x24(%rbp)
jmp    1319 <do_test+0x1a9>
mov    $0xfffffffffffffffd,%rax
cmp    %rax,-0x20(%rbp)
je     1314 <do_test+0x1a4>
lea    0xdad(%rip),%rdi
call   1030 <puts@plt>
movl   $0x1,-0x24(%rbp)
jmp    1319 <do_test+0x1a9>
mov    -0x10(%rbp),%rdi
call   1070 <pthread_key_delete@plt>
mov    %eax,-0x28(%rbp)
cmpl   $0x0,-0x28(%rbp)
je     134d <do_test+0x1dd>
mov    -0x28(%rbp),%edi
call   1080 <strerror@plt>
mov    %rax,%rsi
lea    0xd8c(%rip),%rdi
call   1050 <printf@plt>
movl   $0x1,-0x24(%rbp)
lea    -0x18(%rbp),%rdi
xor    %eax,%eax
mov    %eax,%esi
call   1060 <pthread_key_create@plt>
mov    %eax,-0x28(%rbp)
cmpl   $0x0,-0x28(%rbp)
je     138a <do_test+0x21a>
mov    -0x28(%rbp),%edi
call   1080 <strerror@plt>
mov    %rax,%rsi
lea    0xd6b(%rip),%rdi
call   1050 <printf@plt>
movl   $0x1,-0x4(%rbp)
jmp    13df <do_test+0x26f>
mov    -0x10(%rbp),%rax
cmp    -0x18(%rbp),%rax
je     13a9 <do_test+0x239>
lea    0xd60(%rip),%rdi
call   1030 <puts@plt>
jmp    13d9 <do_test+0x269>
mov    -0x18(%rbp),%rdi
call   1040 <pthread_getspecific@plt>
mov    %rax,-0x20(%rbp)
cmpq   $0x0,-0x20(%rbp)
je     13d4 <do_test+0x264>
lea    0xd5d(%rip),%rdi
call   1030 <puts@plt>
movl   $0x1,-0x24(%rbp)
jmp    13d9 <do_test+0x269>
mov    -0x24(%rbp),%eax
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<do_test>:
push   %rbx
sub    $0x10,%rsp
xor    %ebx,%ebx
mov    %rsp,%rdi
xor    %esi,%esi
call   1060 <pthread_key_create@plt>
test   %eax,%eax
je     1198 <do_test+0x28>
mov    %eax,%edi
call   1080 <strerror@plt>
lea    0xe6d(%rip),%rdi
jmp    12a4 <do_test+0x134>
mov    (%rsp),%rdi
call   1040 <pthread_getspecific@plt>
test   %rax,%rax
je     11b7 <do_test+0x47>
lea    0xe6e(%rip),%rdi
call   1030 <puts@plt>
mov    $0x1,%ebx
mov    (%rsp),%rdi
mov    $0xfffffffffffffffe,%rsi
call   1090 <pthread_setspecific@plt>
test   %eax,%eax
je     11de <do_test+0x6e>
mov    %eax,%edi
call   1080 <strerror@plt>
lea    0xe5a(%rip),%rdi
jmp    12a4 <do_test+0x134>
mov    (%rsp),%rdi
call   1040 <pthread_getspecific@plt>
cmp    $0xfffffffffffffffe,%rax
je     120c <do_test+0x9c>
test   %rax,%rax
jne    11fb <do_test+0x8b>
lea    0xe56(%rip),%rdi
jmp    1202 <do_test+0x92>
lea    0xe66(%rip),%rdi
call   1030 <puts@plt>
mov    $0x1,%ebx
mov    (%rsp),%rdi
mov    $0xfffffffffffffffd,%rsi
call   1090 <pthread_setspecific@plt>
test   %eax,%eax
je     1230 <do_test+0xc0>
mov    %eax,%edi
call   1080 <strerror@plt>
lea    0xe52(%rip),%rdi
jmp    12a4 <do_test+0x134>
mov    (%rsp),%rdi
call   1040 <pthread_getspecific@plt>
cmp    $0xfffffffffffffffd,%rax
je     125e <do_test+0xee>
test   %rax,%rax
jne    124d <do_test+0xdd>
lea    0xe51(%rip),%rdi
jmp    1254 <do_test+0xe4>
lea    0xe61(%rip),%rdi
call   1030 <puts@plt>
mov    $0x1,%ebx
mov    (%rsp),%rdi
call   1070 <pthread_key_delete@plt>
test   %eax,%eax
je     1286 <do_test+0x116>
mov    %eax,%edi
call   1080 <strerror@plt>
lea    0xe54(%rip),%rdi
mov    %rax,%rsi
call   1050 <printf@plt>
mov    $0x1,%ebx
lea    0x8(%rsp),%rdi
xor    %esi,%esi
call   1060 <pthread_key_create@plt>
test   %eax,%eax
je     12b9 <do_test+0x149>
mov    %eax,%edi
call   1080 <strerror@plt>
lea    0xe40(%rip),%rdi
mov    %rax,%rsi
call   1050 <printf@plt>
mov    $0x1,%ebx
mov    %ebx,%eax
add    $0x10,%rsp
pop    %rbx
ret
mov    (%rsp),%rdi
cmp    0x8(%rsp),%rdi
jne    12dc <do_test+0x16c>
call   1040 <pthread_getspecific@plt>
test   %rax,%rax
je     12b1 <do_test+0x141>
lea    0xe50(%rip),%rdi
call   1030 <puts@plt>
jmp    12ac <do_test+0x13c>
lea    0xe1c(%rip),%rdi
call   1030 <puts@plt>
jmp    12b1 <do_test+0x141>

LLVM IR (-O0):
@.str = [27 x i8] c"1st key_create failed: %s\0A\00"
@.str.1 = [24 x i8] c"1st getspecific != NULL\00"
@.str.2 = [28 x i8] c"1st setspecific failed: %s\0A\00"
@.str.3 = [25 x i8] c"2nd getspecific == NULL\0A\00"
@.str.4 = [24 x i8] c"2nd getspecific != -2l\0A\00"
@.str.5 = [28 x i8] c"2nd setspecific failed: %s\0A\00"
@.str.6 = [25 x i8] c"3rd getspecific == NULL\0A\00"
@.str.7 = [24 x i8] c"3rd getspecific != -2l\0A\00"
@.str.8 = [23 x i8] c"key_delete failed: %s\0A\00"
@.str.9 = [27 x i8] c"2nd key_create failed: %s\0A\00"
@.str.10 = [38 x i8] c"key1 != key2; no more tests performed\00"
@.str.11 = [24 x i8] c"4th getspecific != NULL\00"
define i32 @do_test() {
%1 = alloca i32
%2 = alloca i64
%3 = alloca i64
%4 = alloca i8*
%5 = alloca i32
%6 = alloca i32
store i32 0, i32* %5
%7 = call i32 @pthread_key_create(i64* %2, i32* null)
store i32 %7, i32* %6
%8 = load i32, i32* %6
%9 = icmp ne i32 %8, 0
br i1 %9, label %10, label %14
10: ; preds = %0
%11 = load i32, i32* %6
%12 = call i8* @strerror(i32 %11)
%13 = call i32 @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0), i8* %12)
store i32 1, i32* %1
br label %98
14: ; preds = %0
%15 = load i64, i64* %2
%16 = call i8* @pthread_getspecific(i64 %15)
store i8* %16, i8** %4
%17 = load i8*, i8** %4
%18 = icmp ne i8* %17, null
br i1 %18, label %19, label %21
19: ; preds = %14
%20 = call i32 @puts(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0))
store i32 1, i32* %5
br label %21
21: ; preds = %19, %14
%22 = load i64, i64* %2
%23 = call i32 @pthread_setspecific(i64 %22, i8* inttoptr (i64 -2 to i8*))
store i32 %23, i32* %6
%24 = load i32, i32* %6
%25 = icmp ne i32 %24, 0
br i1 %25, label %26, label %30
26: ; preds = %21
%27 = load i32, i32* %6
%28 = call i8* @strerror(i32 %27)
%29 = call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.2, i64 0, i64 0), i8* %28)
store i32 1, i32* %1
br label %98
30: ; preds = %21
%31 = load i64, i64* %2
%32 = call i8* @pthread_getspecific(i64 %31)
store i8* %32, i8** %4
%33 = load i8*, i8** %4
%34 = icmp eq i8* %33, null
br i1 %34, label %35, label %37
35: ; preds = %30
%36 = call i32 @puts(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.3, i64 0, i64 0))
store i32 1, i32* %5
br label %43
37: ; preds = %30
%38 = load i8*, i8** %4
%39 = icmp ne i8* %38, inttoptr (i64 -2 to i8*)
br i1 %39, label %40, label %42
40: ; preds = %37
%41 = call i32 @puts(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.4, i64 0, i64 0))
store i32 1, i32* %5
br label %42
42: ; preds = %40, %37
br label %43
43: ; preds = %42, %35
%44 = load i64, i64* %2
%45 = call i32 @pthread_setspecific(i64 %44, i8* inttoptr (i64 -3 to i8*))
store i32 %45, i32* %6
%46 = load i32, i32* %6
%47 = icmp ne i32 %46, 0
br i1 %47, label %48, label %52
48: ; preds = %43
%49 = load i32, i32* %6
%50 = call i8* @strerror(i32 %49)
%51 = call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.5, i64 0, i64 0), i8* %50)
store i32 1, i32* %1
br label %98
52: ; preds = %43
%53 = load i64, i64* %2
%54 = call i8* @pthread_getspecific(i64 %53)
store i8* %54, i8** %4
%55 = load i8*, i8** %4
%56 = icmp eq i8* %55, null
br i1 %56, label %57, label %59
57: ; preds = %52
%58 = call i32 @puts(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.6, i64 0, i64 0))
store i32 1, i32* %5
br label %65
59: ; preds = %52
%60 = load i8*, i8** %4
%61 = icmp ne i8* %60, inttoptr (i64 -3 to i8*)
br i1 %61, label %62, label %64
62: ; preds = %59
%63 = call i32 @puts(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.7, i64 0, i64 0))
store i32 1, i32* %5
br label %64
64: ; preds = %62, %59
br label %65
65: ; preds = %64, %57
%66 = load i64, i64* %2
%67 = call i32 @pthread_key_delete(i64 %66)
store i32 %67, i32* %6
%68 = load i32, i32* %6
%69 = icmp ne i32 %68, 0
br i1 %69, label %70, label %74
70: ; preds = %65
%71 = load i32, i32* %6
%72 = call i8* @strerror(i32 %71)
%73 = call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.8, i64 0, i64 0), i8* %72)
store i32 1, i32* %5
br label %74
74: ; preds = %70, %65
%75 = call i32 @pthread_key_create(i64* %3, i32* null)
store i32 %75, i32* %6
%76 = load i32, i32* %6
%77 = icmp ne i32 %76, 0
br i1 %77, label %78, label %82
78: ; preds = %74
%79 = load i32, i32* %6
%80 = call i8* @strerror(i32 %79)
%81 = call i32 @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.9, i64 0, i64 0), i8* %80)
store i32 1, i32* %1
br label %98
82: ; preds = %74
%83 = load i64, i64* %2
%84 = load i64, i64* %3
%85 = icmp ne i64 %83, %84
br i1 %85, label %86, label %88
86: ; preds = %82
%87 = call i32 @puts(i8* getelementptr inbounds ([38 x i8], [38 x i8]* @.str.10, i64 0, i64 0))
br label %96
88: ; preds = %82
%89 = load i64, i64* %3
%90 = call i8* @pthread_getspecific(i64 %89)
store i8* %90, i8** %4
%91 = load i8*, i8** %4
%92 = icmp ne i8* %91, null
br i1 %92, label %93, label %95
93: ; preds = %88
%94 = call i32 @puts(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.11, i64 0, i64 0))
store i32 1, i32* %5
br label %95
95: ; preds = %93, %88
br label %96
96: ; preds = %95, %86
%97 = load i32, i32* %5
store i32 %97, i32* %1
br label %98
98: ; preds = %96, %78, %48, %26, %10
%99 = load i32, i32* %1
ret i32 %99
}

LLVM IR (-O2):
@.str = [27 x i8] c"1st key_create failed: %s\0A\00"
@.str.1 = [24 x i8] c"1st getspecific != NULL\00"
@.str.2 = [28 x i8] c"1st setspecific failed: %s\0A\00"
@.str.3 = [25 x i8] c"2nd getspecific == NULL\0A\00"
@.str.4 = [24 x i8] c"2nd getspecific != -2l\0A\00"
@.str.5 = [28 x i8] c"2nd setspecific failed: %s\0A\00"
@.str.6 = [25 x i8] c"3rd getspecific == NULL\0A\00"
@.str.7 = [24 x i8] c"3rd getspecific != -2l\0A\00"
@.str.8 = [23 x i8] c"key_delete failed: %s\0A\00"
@.str.9 = [27 x i8] c"2nd key_create failed: %s\0A\00"
@.str.10 = [38 x i8] c"key1 != key2; no more tests performed\00"
@.str.11 = [24 x i8] c"4th getspecific != NULL\00"
define i32 @do_test() {
%1 = alloca i64
%2 = alloca i64
%3 = bitcast i64* %1 to i8*
%4 = bitcast i64* %2 to i8*
%5 = call i32 @pthread_key_create(i64* %1, i32* null)
%6 = icmp eq i32 %5, 0
br i1 %6, label %10, label %7
7: ; preds = %0
%8 = call i8* @strerror(i32 %5)
%9 = call i32 @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0), i8* %8)
br label %74
10: ; preds = %0
%11 = load i64, i64* %1
%12 = call i8* @pthread_getspecific(i64 %11)
%13 = icmp eq i8* %12, null
br i1 %13, label %16, label %14
14: ; preds = %10
%15 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0))
br label %16
16: ; preds = %14, %10
%17 = phi i32 [ 1, %14 ], [ 0, %10 ]
%18 = load i64, i64* %1
%19 = call i32 @pthread_setspecific(i64 %18, i8* inttoptr (i64 -2 to i8*))
%20 = icmp eq i32 %19, 0
br i1 %20, label %24, label %21
21: ; preds = %16
%22 = call i8* @strerror(i32 %19)
%23 = call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.2, i64 0, i64 0), i8* %22)
br label %74
24: ; preds = %16
%25 = load i64, i64* %1
%26 = call i8* @pthread_getspecific(i64 %25)
%27 = ptrtoint i8* %26 to i64
switch i64 %27, label %28 [
i64 0, label %29
i64 -2, label %32
]
28: ; preds = %24
br label %29
29: ; preds = %24, %28
%30 = phi i8* [ getelementptr inbounds ([24 x i8], [24 x i8]* @.str.4, i64 0, i64 0), %28 ], [ getelementptr inbounds ([25 x i8], [25 x i8]* @.str.3, i64 0, i64 0), %24 ]
%31 = call i32 @puts(i8* dereferenceable(1) %30)
br label %32
32: ; preds = %29, %24
%33 = phi i32 [ %17, %24 ], [ 1, %29 ]
%34 = load i64, i64* %1
%35 = call i32 @pthread_setspecific(i64 %34, i8* inttoptr (i64 -3 to i8*))
%36 = icmp eq i32 %35, 0
br i1 %36, label %40, label %37
37: ; preds = %32
%38 = call i8* @strerror(i32 %35)
%39 = call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.5, i64 0, i64 0), i8* %38)
br label %74
40: ; preds = %32
%41 = load i64, i64* %1
%42 = call i8* @pthread_getspecific(i64 %41)
%43 = ptrtoint i8* %42 to i64
switch i64 %43, label %44 [
i64 0, label %45
i64 -3, label %48
]
44: ; preds = %40
br label %45
45: ; preds = %40, %44
%46 = phi i8* [ getelementptr inbounds ([24 x i8], [24 x i8]* @.str.7, i64 0, i64 0), %44 ], [ getelementptr inbounds ([25 x i8], [25 x i8]* @.str.6, i64 0, i64 0), %40 ]
%47 = call i32 @puts(i8* dereferenceable(1) %46)
br label %48
48: ; preds = %45, %40
%49 = phi i32 [ %33, %40 ], [ 1, %45 ]
%50 = load i64, i64* %1
%51 = call i32 @pthread_key_delete(i64 %50)
%52 = icmp eq i32 %51, 0
br i1 %52, label %56, label %53
53: ; preds = %48
%54 = call i8* @strerror(i32 %51)
%55 = call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.8, i64 0, i64 0), i8* %54)
br label %56
56: ; preds = %53, %48
%57 = phi i32 [ 1, %53 ], [ %49, %48 ]
%58 = call i32 @pthread_key_create(i64* %2, i32* null)
%59 = icmp eq i32 %58, 0
br i1 %59, label %63, label %60
60: ; preds = %56
%61 = call i8* @strerror(i32 %58)
%62 = call i32 @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.9, i64 0, i64 0), i8* %61)
br label %74
63: ; preds = %56
%64 = load i64, i64* %1
%65 = load i64, i64* %2
%66 = icmp eq i64 %64, %65
br i1 %66, label %69, label %67
67: ; preds = %63
%68 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([38 x i8], [38 x i8]* @.str.10, i64 0, i64 0))
br label %74
69: ; preds = %63
%70 = call i8* @pthread_getspecific(i64 %64)
%71 = icmp eq i8* %70, null
br i1 %71, label %74, label %72
72: ; preds = %69
%73 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @.str.11, i64 0, i64 0))
br label %74
74: ; preds = %67, %72, %69, %60, %37, %21, %7
%75 = phi i32 [ 1, %7 ], [ 1, %21 ], [ 1, %37 ], [ 1, %60 ], [ %57, %67 ], [ 1, %72 ], [ %57, %69 ]
ret i32 %75
}