#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 main() {
  int num, i;
  num = 5, i = 0;
  while (--num && ++i)
    printf("running...\n");
  printf("num = %i, i = %i \n", num, i);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x5,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
mov    -0x8(%rbp),%ecx
add    $0xffffffff,%ecx
mov    %ecx,-0x8(%rbp)
xor    %eax,%eax
cmp    $0x0,%ecx
mov    %al,-0xd(%rbp)
je     1156 <main+0x46>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
cmp    $0x0,%eax
setne  %al
mov    %al,-0xd(%rbp)
mov    -0xd(%rbp),%al
test   $0x1,%al
jne    1166 <main+0x56>
jmp    1179 <main+0x69>
lea    0xe93(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    112d <main+0x1d>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xe86(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xeeb(%rip),%rbx
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
lea    0xeb1(%rip),%rdi
xor    %esi,%esi
mov    $0x4,%edx
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [12 x i8] c"running...\0A\00"
@.str.1 = [19 x i8] c"num = %i, i = %i \0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 5, i32* %2
store i32 0, i32* %3
br label %4
4: ; preds = %14, %0
%5 = load i32, i32* %2
%6 = add nsw i32 %5, -1
store i32 %6, i32* %2
%7 = icmp ne i32 %6, 0
br i1 %7, label %8, label %12
8: ; preds = %4
%9 = load i32, i32* %3
%10 = add nsw i32 %9, 1
store i32 %10, i32* %3
%11 = icmp ne i32 %10, 0
br label %12
12: ; preds = %8, %4
%13 = phi i1 [ false, %4 ], [ %11, %8 ]
br i1 %13, label %14, label %16
14: ; preds = %12
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0))
br label %4
16: ; preds = %12
%17 = load i32, i32* %2
%18 = load i32, i32* %3
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0), i32 %17, i32 %18)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [19 x i8] c"num = %i, i = %i \0A\00"
@str = [11 x i8] c"running...\00"
define i32 @main() {
%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 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str, i64 0, i64 0))
%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 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str, i64 0, i64 0))
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0), i32 0, i32 4)
ret i32 0
}