#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*/ equation(int, int, int, int);
int /*<<< orphan*/ printf(char *);
int /*<<< orphan*/ scanf(char *, int *);
int main() {
  int a, b, c, d;
  printf("(ax+b)(cx+d)\n");
  printf("a = ");
  scanf("%d", &a);
  printf("b = ");
  scanf("%d", &b);
  printf("c = ");
  scanf("%d", &c);
  printf("d = ");
  scanf("%d", &d);
  equation(a, b, c, d);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeba(%rip),%rdi
call   1030 <printf@plt>
lea    0xebc(%rip),%rdi
call   1030 <printf@plt>
lea    0xeb5(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xea8(%rip),%rdi
call   1030 <printf@plt>
lea    0xe99(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xe91(%rip),%rdi
call   1030 <printf@plt>
lea    0xe7d(%rip),%rdi
lea    -0x10(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xe7a(%rip),%rdi
call   1030 <printf@plt>
lea    0xe61(%rip),%rdi
lea    -0x14(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%edi
mov    -0xc(%rbp),%esi
mov    -0x10(%rbp),%edx
mov    -0x14(%rbp),%ecx
call   1050 <equation@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xecb(%rip),%rdi
call   1030 <puts@plt>
lea    0xea8(%rip),%rdi
call   1040 <printf@plt>
lea    0xea1(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
lea    0xe90(%rip),%rdi
call   1040 <printf@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
lea    0xe7c(%rip),%rdi
call   1040 <printf@plt>
lea    0x4(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
lea    0xe68(%rip),%rdi
call   1040 <printf@plt>
mov    %rsp,%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
mov    0xc(%rsp),%edi
mov    0x8(%rsp),%esi
mov    0x4(%rsp),%edx
mov    (%rsp),%ecx
call   1060 <equation@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [14 x i8] c"(ax+b)(cx+d)\0A\00"
@.str.1 = [5 x i8] c"a = \00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [5 x i8] c"b = \00"
@.str.4 = [5 x i8] c"c = \00"
@.str.5 = [5 x i8] c"d = \00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
store i32 0, i32* %1
%6 = call i32 @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %2)
%9 = call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %3)
%11 = call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.4, i64 0, i64 0))
%12 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %4)
%13 = call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.5, i64 0, i64 0))
%14 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %5)
%15 = load i32, i32* %2
%16 = load i32, i32* %3
%17 = load i32, i32* %4
%18 = load i32, i32* %5
%19 = call i32 @equation(i32 %15, i32 %16, i32 %17, i32 %18)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [5 x i8] c"a = \00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [5 x i8] c"b = \00"
@.str.4 = [5 x i8] c"c = \00"
@.str.5 = [5 x i8] c"d = \00"
@str = [13 x i8] c"(ax+b)(cx+d)\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = bitcast i32* %1 to i8*
%6 = bitcast i32* %2 to i8*
%7 = bitcast i32* %3 to i8*
%8 = bitcast i32* %4 to i8*
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @str, i64 0, i64 0))
%10 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%11 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %1)
%12 = call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0))
%13 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %2)
%14 = call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.4, i64 0, i64 0))
%15 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %3)
%16 = call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.5, i64 0, i64 0))
%17 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %4)
%18 = load i32, i32* %1
%19 = load i32, i32* %2
%20 = load i32, i32* %3
%21 = load i32, i32* %4
%22 = call i32 @equation(i32 %18, i32 %19, i32 %20, i32 %21)
ret i32 0
}