#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 diff(int, int);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ puts(char *);
int /*<<< orphan*/ scanf(char *, int *);
int sqr(int);
int main(void) {
  int kx, ky, kx2, ky2;
  puts("请输入两个整数");
  printf("整数  kx :");
  scanf("%d", &kx);
  printf("整数 ky :");
  scanf("%d", &ky);
  kx2 = sqr(kx);
  ky2 = sqr(ky);
  printf("kx 和ky的平方差是 %d. \n", diff(kx2, ky2));
  return (0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xe9a(%rip),%rdi
call   1030 <puts@plt>
lea    0xea4(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xea3(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1060 <scanf@plt>
lea    0xe96(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xe85(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1060 <scanf@plt>
mov    -0x8(%rbp),%edi
call   1050 <sqr@plt>
mov    %eax,-0x10(%rbp)
mov    -0xc(%rbp),%edi
call   1050 <sqr@plt>
mov    %eax,-0x14(%rbp)
mov    -0x10(%rbp),%edi
mov    -0x14(%rbp),%esi
call   1070 <diff@plt>
mov    %eax,%esi
lea    0xe61(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xea4(%rip),%rdi
call   1030 <puts@plt>
lea    0xeae(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xead(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1060 <scanf@plt>
lea    0xe9c(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1060 <scanf@plt>
mov    0xc(%rsp),%edi
call   1050 <sqr@plt>
mov    %eax,%ebx
mov    0x8(%rsp),%edi
call   1050 <sqr@plt>
mov    %ebx,%edi
mov    %eax,%esi
call   1070 <diff@plt>
lea    0xe70(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [22 x i8] c"\E8\AF\B7\E8\BE\93\E5\85\A5\E4\B8\A4\E4\B8\AA\E6\95\B4\E6\95\B0\00"
@.str.1 = [13 x i8] c"\E6\95\B4\E6\95\B0 kx :\00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [12 x i8] c"\E6\95\B4\E6\95\B0 ky :\00"
@.str.4 = [30 x i8] c"kx \E5\92\8Cky\E7\9A\84\E5\B9\B3\E6\96\B9\E5\B7\AE\E6\98\AF %d. \0A\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 @puts(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0))
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 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 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 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 = load i32, i32* %2
%12 = call i32 @sqr(i32 %11)
store i32 %12, i32* %4
%13 = load i32, i32* %3
%14 = call i32 @sqr(i32 %13)
store i32 %14, i32* %5
%15 = load i32, i32* %4
%16 = load i32, i32* %5
%17 = call i32 @diff(i32 %15, i32 %16)
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.4, i64 0, i64 0), i32 %17)
ret i32 0
}

LLVM IR (-O2):
@.str = [22 x i8] c"\E8\AF\B7\E8\BE\93\E5\85\A5\E4\B8\A4\E4\B8\AA\E6\95\B4\E6\95\B0\00"
@.str.1 = [13 x i8] c"\E6\95\B4\E6\95\B0 kx :\00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [12 x i8] c"\E6\95\B4\E6\95\B0 ky :\00"
@.str.4 = [30 x i8] c"kx \E5\92\8Cky\E7\9A\84\E5\B9\B3\E6\96\B9\E5\B7\AE\E6\98\AF %d. \0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
%4 = bitcast i32* %2 to i8*
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0))
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %1)
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0))
%9 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %2)
%10 = load i32, i32* %1
%11 = call i32 @sqr(i32 %10)
%12 = load i32, i32* %2
%13 = call i32 @sqr(i32 %12)
%14 = call i32 @diff(i32 %11, i32 %13)
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([30 x i8], [30 x i8]* @.str.4, i64 0, i64 0), i32 %14)
ret i32 0
}