#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*/ thisFunctionTerminatesTheProcess();
int thisFunctionWontReturn(int x) {
  if (x) {
    for (int i = 0; i < 10; ++i) {
      printf("%d green bottles hanging on the wall", 10 - i);
    }
    thisFunctionTerminatesTheProcess();
  }
  return 0;
}


x86 assembly (clang, -O0):
<thisFunctionWontReturn>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x4(%rbp)
cmpl   $0x0,-0x4(%rbp)
je     116f <thisFunctionWontReturn+0x4f>
movl   $0x0,-0x8(%rbp)
cmpl   $0xa,-0x8(%rbp)
jge    1168 <thisFunctionWontReturn+0x48>
mov    $0xa,%esi
sub    -0x8(%rbp),%esi
lea    0xeab(%rip),%rdi
call   1030 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    113c <thisFunctionWontReturn+0x1c>
mov    $0x0,%al
call   1040 <thisFunctionTerminatesTheProcess@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<thisFunctionWontReturn>:
test   %edi,%edi
je     11ba <thisFunctionWontReturn+0x9a>
push   %rbx
lea    0xed0(%rip),%rbx
mov    %rbx,%rdi
mov    $0xa,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x9,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x8,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x7,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x6,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x5,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x4,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x3,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x2,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x1,%esi
call   1030 <printf@plt>
xor    %eax,%eax
call   1040 <thisFunctionTerminatesTheProcess@plt>
pop    %rbx
xor    %eax,%eax
ret

LLVM IR (-O0):
@.str = [37 x i8] c"%d green bottles hanging on the wall\00"
define i32 @thisFunctionWontReturn(i32 %0) {
%2 = alloca i32
%3 = alloca i32
store i32 %0, i32* %2
%4 = load i32, i32* %2
%5 = icmp ne i32 %4, 0
br i1 %5, label %6, label %19
6: ; preds = %1
store i32 0, i32* %3
br label %7
7: ; preds = %14, %6
%8 = load i32, i32* %3
%9 = icmp slt i32 %8, 10
br i1 %9, label %10, label %17
10: ; preds = %7
%11 = load i32, i32* %3
%12 = sub nsw i32 10, %11
%13 = call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0), i32 %12)
br label %14
14: ; preds = %10
%15 = load i32, i32* %3
%16 = add nsw i32 %15, 1
store i32 %16, i32* %3
br label %7
17: ; preds = %7
%18 = call i32 (...) @thisFunctionTerminatesTheProcess()
br label %19
19: ; preds = %17, %1
ret i32 0
}

LLVM IR (-O2):
@.str = [37 x i8] c"%d green bottles hanging on the wall\00"
define i32 @thisFunctionWontReturn(i32 %0) {
%2 = icmp eq i32 %0, 0
br i1 %2, label %15, label %3
3: ; preds = %1
%4 = tail call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0), i32 10)
%5 = tail call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0), i32 9)
%6 = tail call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0), i32 8)
%7 = tail call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0), i32 7)
%8 = tail call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0), i32 6)
%9 = tail call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0), i32 5)
%10 = tail call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0), i32 4)
%11 = tail call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0), i32 3)
%12 = tail call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0), i32 2)
%13 = tail call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0), i32 1)
%14 = tail call i32 (...) @thisFunctionTerminatesTheProcess()
br label %15
15: ; preds = %3, %1
ret i32 0
}