#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 GCD(int, int);
int GetInteger();
int /*<<< orphan*/ printf(char *, ...);
main() {
  int x, y;
  printf("This program calculates greatest common divisors.\n");
  printf("Enter two integers, x and y.\n");
  printf("x = ? ");
  x = GetInteger();
  printf("y = ? ");
  y = GetInteger();
  printf("The gcd of %d and %d is %d.\n", x, y, GCD(x, y));
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xec1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xee6(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xef6(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    $0x0,%al
call   1050 <GetInteger@plt>
mov    %eax,-0x4(%rbp)
lea    0xee5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    $0x0,%al
call   1050 <GetInteger@plt>
mov    %eax,-0x8(%rbp)
mov    -0x4(%rbp),%eax
mov    %eax,-0x10(%rbp)
mov    -0x8(%rbp),%eax
mov    %eax,-0xc(%rbp)
mov    -0x4(%rbp),%edi
mov    -0x8(%rbp),%esi
call   1040 <GCD@plt>
mov    -0x10(%rbp),%esi
mov    -0xc(%rbp),%edx
mov    %eax,%ecx
lea    0xeb5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %rbx
push   %rax
lea    0xee1(%rip),%rdi
call   1030 <puts@plt>
lea    0xf07(%rip),%rdi
call   1030 <puts@plt>
lea    0xe9e(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
call   1060 <GetInteger@plt>
mov    %eax,%ebx
lea    0xe8e(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
call   1060 <GetInteger@plt>
mov    %eax,%ebp
mov    %ebx,%edi
mov    %eax,%esi
call   1050 <GCD@plt>
lea    0xe75(%rip),%rdi
mov    %ebx,%esi
mov    %ebp,%edx
mov    %eax,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [51 x i8] c"This program calculates greatest common divisors.\0A\00"
@.str.1 = [30 x i8] c"Enter two integers, x and y.\0A\00"
@.str.2 = [7 x i8] c"x = ? \00"
@.str.3 = [7 x i8] c"y = ? \00"
@.str.4 = [29 x i8] c"The gcd of %d and %d is %d.\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([51 x i8], [51 x i8]* @.str, i64 0, i64 0))
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.1, i64 0, i64 0))
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0))
%6 = call i32 (...) @GetInteger()
store i32 %6, i32* %1
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.3, i64 0, i64 0))
%8 = call i32 (...) @GetInteger()
store i32 %8, i32* %2
%9 = load i32, i32* %1
%10 = load i32, i32* %2
%11 = load i32, i32* %1
%12 = load i32, i32* %2
%13 = call i32 @GCD(i32 %11, i32 %12)
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.4, i64 0, i64 0), i32 %9, i32 %10, i32 %13)
ret i32 0
}

LLVM IR (-O2):
@.str.2 = [7 x i8] c"x = ? \00"
@.str.3 = [7 x i8] c"y = ? \00"
@.str.4 = [29 x i8] c"The gcd of %d and %d is %d.\0A\00"
@str = [50 x i8] c"This program calculates greatest common divisors.\00"
@str.5 = [29 x i8] c"Enter two integers, x and y.\00"
define i32 @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([50 x i8], [50 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([29 x i8], [29 x i8]* @str.5, i64 0, i64 0))
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0))
%4 = tail call i32 (...) @GetInteger()
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.3, i64 0, i64 0))
%6 = tail call i32 (...) @GetInteger()
%7 = tail call i32 @GCD(i32 %4, i32 %6)
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([29 x i8], [29 x i8]* @.str.4, i64 0, i64 0), i32 %4, i32 %6, i32 %7)
ret i32 0
}