#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);
int /*<<< orphan*/ sleep(int);
void *thread1(void) {
  for (int i = 0; i < 10; ++i) {
    printf("this is thread 1, num = %i\n", i);
    sleep(2);
  }
}


x86 assembly (clang, -O0):
<thread1>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0xc(%rbp)
cmpl   $0xa,-0xc(%rbp)
jge    1160 <thread1+0x40>
mov    -0xc(%rbp),%esi
lea    0xebd(%rip),%rdi
call   1030 <printf@plt>
mov    $0x2,%edi
call   1040 <sleep@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    112f <thread1+0xf>
mov    -0x8(%rbp),%rax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<thread1>:
push   %rbx
lea    0xed8(%rip),%rbx
mov    %rbx,%rdi
xor    %esi,%esi
call   1030 <printf@plt>
mov    $0x2,%edi
call   1040 <sleep@plt>
mov    %rbx,%rdi
mov    $0x1,%esi
call   1030 <printf@plt>
mov    $0x2,%edi
call   1040 <sleep@plt>
mov    %rbx,%rdi
mov    $0x2,%esi
call   1030 <printf@plt>
mov    $0x2,%edi
call   1040 <sleep@plt>
mov    %rbx,%rdi
mov    $0x3,%esi
call   1030 <printf@plt>
mov    $0x2,%edi
call   1040 <sleep@plt>
mov    %rbx,%rdi
mov    $0x4,%esi
call   1030 <printf@plt>
mov    $0x2,%edi
call   1040 <sleep@plt>
mov    %rbx,%rdi
mov    $0x5,%esi
call   1030 <printf@plt>
mov    $0x2,%edi
call   1040 <sleep@plt>
mov    %rbx,%rdi
mov    $0x6,%esi
call   1030 <printf@plt>
mov    $0x2,%edi
call   1040 <sleep@plt>
mov    %rbx,%rdi
mov    $0x7,%esi
call   1030 <printf@plt>
mov    $0x2,%edi
call   1040 <sleep@plt>
mov    %rbx,%rdi
mov    $0x8,%esi
call   1030 <printf@plt>
mov    $0x2,%edi
call   1040 <sleep@plt>
mov    %rbx,%rdi
mov    $0x9,%esi
call   1030 <printf@plt>
mov    $0x2,%edi
pop    %rbx
jmp    1040 <sleep@plt>

LLVM IR (-O0):
@.str = [28 x i8] c"this is thread 1, num = %i\0A\00"
define i8* @thread1() {
%1 = alloca i8*
%2 = alloca i32
store i32 0, i32* %2
br label %3
3: ; preds = %10, %0
%4 = load i32, i32* %2
%5 = icmp slt i32 %4, 10
br i1 %5, label %6, label %13
6: ; preds = %3
%7 = load i32, i32* %2
%8 = call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i32 %7)
%9 = call i32 @sleep(i32 2)
br label %10
10: ; preds = %6
%11 = load i32, i32* %2
%12 = add nsw i32 %11, 1
store i32 %12, i32* %2
br label %3
13: ; preds = %3
%14 = load i8*, i8** %1
ret i8* %14
}

LLVM IR (-O2):
@.str = [28 x i8] c"this is thread 1, num = %i\0A\00"
define noalias i8* @thread1() {
%1 = tail call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i32 0)
%2 = tail call i32 @sleep(i32 2)
%3 = tail call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i32 1)
%4 = tail call i32 @sleep(i32 2)
%5 = tail call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i32 2)
%6 = tail call i32 @sleep(i32 2)
%7 = tail call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i32 3)
%8 = tail call i32 @sleep(i32 2)
%9 = tail call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i32 4)
%10 = tail call i32 @sleep(i32 2)
%11 = tail call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i32 5)
%12 = tail call i32 @sleep(i32 2)
%13 = tail call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i32 6)
%14 = tail call i32 @sleep(i32 2)
%15 = tail call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i32 7)
%16 = tail call i32 @sleep(i32 2)
%17 = tail call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i32 8)
%18 = tail call i32 @sleep(i32 2)
%19 = tail call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i32 9)
%20 = tail call i32 @sleep(i32 2)
ret i8* undef
}