#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 n = 99;
  do {
    printf("%d bottles of beer on the wall\n", n);
    printf("%d bottles of beer\n", n);
    printf("Take one down, pass it around\n");
    printf("%d bottles of beer on the wall\n\n", --n);
  } while (n > 0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x63,-0x8(%rbp)
mov    -0x8(%rbp),%esi
lea    0xed0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%esi
lea    0xedf(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xee5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%esi
add    $0xffffffff,%esi
mov    %esi,-0x8(%rbp)
lea    0xeed(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
cmpl   $0x0,-0x8(%rbp)
jg     1126 <main+0x16>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
mov    $0x63,%ebx
lea    0xec9(%rip),%r14
lea    0xee2(%rip),%r15
lea    0xf10(%rip),%r12
lea    0xee8(%rip),%r13
nopl   0x0(%rax)
mov    %r14,%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r15,%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r12,%rdi
call   1030 <puts@plt>
lea    -0x1(%rbx),%ebp
mov    %r13,%rdi
mov    %ebp,%esi
xor    %eax,%eax
call   1040 <printf@plt>
cmp    $0x1,%ebx
mov    %ebp,%ebx
ja     1150 <main+0x30>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [32 x i8] c"%d bottles of beer on the wall\0A\00"
@.str.1 = [20 x i8] c"%d bottles of beer\0A\00"
@.str.2 = [31 x i8] c"Take one down, pass it around\0A\00"
@.str.3 = [33 x i8] c"%d bottles of beer on the wall\0A\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
store i32 99, i32* %2
br label %3
3: ; preds = %12, %0
%4 = load i32, i32* %2
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str, i64 0, i64 0), i32 %4)
%6 = load i32, i32* %2
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.1, i64 0, i64 0), i32 %6)
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str.2, i64 0, i64 0))
%9 = load i32, i32* %2
%10 = add nsw i32 %9, -1
store i32 %10, i32* %2
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str.3, i64 0, i64 0), i32 %10)
br label %12
12: ; preds = %3
%13 = load i32, i32* %2
%14 = icmp sgt i32 %13, 0
br i1 %14, label %3, label %15
15: ; preds = %12
%16 = load i32, i32* %1
ret i32 %16
}

LLVM IR (-O2):
@.str = [32 x i8] c"%d bottles of beer on the wall\0A\00"
@.str.1 = [20 x i8] c"%d bottles of beer\0A\00"
@.str.3 = [33 x i8] c"%d bottles of beer on the wall\0A\0A\00"
@str = [30 x i8] c"Take one down, pass it around\00"
define i32 @main() {
br label %1
1: ; preds = %1, %0
%2 = phi i32 [ 99, %0 ], [ %6, %1 ]
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([32 x i8], [32 x i8]* @.str, i64 0, i64 0), i32 %2)
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @.str.1, i64 0, i64 0), i32 %2)
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([30 x i8], [30 x i8]* @str, i64 0, i64 0))
%6 = add nsw i32 %2, -1
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([33 x i8], [33 x i8]* @.str.3, i64 0, i64 0), i32 %6)
%8 = icmp ugt i32 %2, 1
br i1 %8, label %1, label %9
9: ; preds = %1
ret i32 0
}