#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*/ pthread_exit(char *);
int /*<<< orphan*/ sleep(int);
void newthread(void) {
  int i;
  for (i = 0; i < 5; i++) {
    printf("new thread\n");
    sleep(1);
  }
  pthread_exit("thread exit!\n");
}


x86 assembly (clang, -O0):
<newthread>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
cmpl   $0x5,-0x4(%rbp)
jge    116d <newthread+0x3d>
lea    0xeb0(%rip),%rdi
call   1030 <printf@plt>
mov    $0x1,%edi
call   1050 <sleep@plt>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    113f <newthread+0xf>
lea    0xe98(%rip),%rdi
call   1040 <pthread_exit@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<newthread>:
push   %rbx
lea    0xed6(%rip),%rbx
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    $0x1,%edi
call   1050 <sleep@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    $0x1,%edi
call   1050 <sleep@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    $0x1,%edi
call   1050 <sleep@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    $0x1,%edi
call   1050 <sleep@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    $0x1,%edi
call   1050 <sleep@plt>
lea    0xe67(%rip),%rdi
pop    %rbx
jmp    1040 <pthread_exit@plt>

LLVM IR (-O0):
@.str = [12 x i8] c"new thread\0A\00"
@.str.1 = [14 x i8] c"thread exit!\0A\00"
define void @newthread() {
%1 = alloca i32
store i32 0, i32* %1
br label %2
2: ; preds = %8, %0
%3 = load i32, i32* %1
%4 = icmp slt i32 %3, 5
br i1 %4, label %5, label %11
5: ; preds = %2
%6 = call i32 @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0))
%7 = call i32 @sleep(i32 1)
br label %8
8: ; preds = %5
%9 = load i32, i32* %1
%10 = add nsw i32 %9, 1
store i32 %10, i32* %1
br label %2
11: ; preds = %2
%12 = call i32 @pthread_exit(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str.1 = [14 x i8] c"thread exit!\0A\00"
@str = [11 x i8] c"new thread\00"
define void @newthread() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @sleep(i32 1)
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 @sleep(i32 1)
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str, i64 0, i64 0))
%6 = tail call i32 @sleep(i32 1)
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str, i64 0, i64 0))
%8 = tail call i32 @sleep(i32 1)
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str, i64 0, i64 0))
%10 = tail call i32 @sleep(i32 1)
%11 = tail call i32 @pthread_exit(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0))
ret void
}