#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*/ getchar();
scalar_t__ getpid();
int /*<<< orphan*/ printf(char *, int);
int /*<<< orphan*/ sleep(int);
int /*<<< orphan*/ write(int, char *, int);
int main() {
  int i;
  printf("PID: %d\n", (int)getpid());
  for (i = 0; i < 10; i++) {
    write(1, "Hello World\n", 12);
    sleep(2);
  }
  getchar();
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    $0x0,%al
call   1040 <getpid@plt>
mov    %eax,%esi
lea    0xe91(%rip),%rdi
call   1050 <printf@plt>
movl   $0x0,-0x8(%rbp)
cmpl   $0xa,-0x8(%rbp)
jge    11b3 <main+0x63>
mov    $0x1,%edi
lea    0xe78(%rip),%rsi
mov    $0xc,%edx
call   1030 <write@plt>
mov    $0x2,%edi
call   1070 <sleep@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    117b <main+0x2b>
mov    $0x0,%al
call   1060 <getchar@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
xor    %eax,%eax
call   1040 <getpid@plt>
lea    0xea1(%rip),%rdi
mov    %eax,%esi
call   1050 <printf@plt>
lea    0xe9c(%rip),%rbx
mov    $0x1,%edi
mov    %rbx,%rsi
mov    $0xc,%edx
call   1030 <write@plt>
mov    $0x2,%edi
call   1070 <sleep@plt>
mov    $0x1,%edi
mov    %rbx,%rsi
mov    $0xc,%edx
call   1030 <write@plt>
mov    $0x2,%edi
call   1070 <sleep@plt>
mov    $0x1,%edi
mov    %rbx,%rsi
mov    $0xc,%edx
call   1030 <write@plt>
mov    $0x2,%edi
call   1070 <sleep@plt>
mov    $0x1,%edi
mov    %rbx,%rsi
mov    $0xc,%edx
call   1030 <write@plt>
mov    $0x2,%edi
call   1070 <sleep@plt>
mov    $0x1,%edi
mov    %rbx,%rsi
mov    $0xc,%edx
call   1030 <write@plt>
mov    $0x2,%edi
call   1070 <sleep@plt>
mov    $0x1,%edi
mov    %rbx,%rsi
mov    $0xc,%edx
call   1030 <write@plt>
mov    $0x2,%edi
call   1070 <sleep@plt>
mov    $0x1,%edi
mov    %rbx,%rsi
mov    $0xc,%edx
call   1030 <write@plt>
mov    $0x2,%edi
call   1070 <sleep@plt>
mov    $0x1,%edi
mov    %rbx,%rsi
mov    $0xc,%edx
call   1030 <write@plt>
mov    $0x2,%edi
call   1070 <sleep@plt>
mov    $0x1,%edi
mov    %rbx,%rsi
mov    $0xc,%edx
call   1030 <write@plt>
mov    $0x2,%edi
call   1070 <sleep@plt>
mov    $0x1,%edi
mov    %rbx,%rsi
mov    $0xc,%edx
call   1030 <write@plt>
mov    $0x2,%edi
call   1070 <sleep@plt>
xor    %eax,%eax
call   1060 <getchar@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [9 x i8] c"PID: %d\0A\00"
@.str.1 = [13 x i8] c"Hello World\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i64 (...) @getpid()
%4 = trunc i64 %3 to i32
%5 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i32 %4)
store i32 0, i32* %2
br label %6
6: ; preds = %12, %0
%7 = load i32, i32* %2
%8 = icmp slt i32 %7, 10
br i1 %8, label %9, label %15
9: ; preds = %6
%10 = call i32 @write(i32 1, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i32 12)
%11 = call i32 @sleep(i32 2)
br label %12
12: ; preds = %9
%13 = load i32, i32* %2
%14 = add nsw i32 %13, 1
store i32 %14, i32* %2
br label %6
15: ; preds = %6
%16 = call i32 (...) @getchar()
ret i32 0
}

LLVM IR (-O2):
@.str = [9 x i8] c"PID: %d\0A\00"
@.str.1 = [13 x i8] c"Hello World\0A\00"
define i32 @main() {
%1 = tail call i64 (...) @getpid()
%2 = trunc i64 %1 to i32
%3 = tail call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i32 %2)
%4 = tail call i32 @write(i32 1, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i32 12)
%5 = tail call i32 @sleep(i32 2)
%6 = tail call i32 @write(i32 1, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i32 12)
%7 = tail call i32 @sleep(i32 2)
%8 = tail call i32 @write(i32 1, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i32 12)
%9 = tail call i32 @sleep(i32 2)
%10 = tail call i32 @write(i32 1, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i32 12)
%11 = tail call i32 @sleep(i32 2)
%12 = tail call i32 @write(i32 1, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i32 12)
%13 = tail call i32 @sleep(i32 2)
%14 = tail call i32 @write(i32 1, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i32 12)
%15 = tail call i32 @sleep(i32 2)
%16 = tail call i32 @write(i32 1, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i32 12)
%17 = tail call i32 @sleep(i32 2)
%18 = tail call i32 @write(i32 1, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i32 12)
%19 = tail call i32 @sleep(i32 2)
%20 = tail call i32 @write(i32 1, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i32 12)
%21 = tail call i32 @sleep(i32 2)
%22 = tail call i32 @write(i32 1, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i32 12)
%23 = tail call i32 @sleep(i32 2)
%24 = tail call i32 (...) @getchar()
ret i32 0
}