#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 /*<<< orphan*/ scanf(char *, int *);
int fig02_05() {
  int integer1;
  int integer2;
  int sum;
  printf("Enter first integer\n");
  scanf("%d", &integer1);
  printf("Enter second integer\n");
  scanf("%d", &integer2);
  sum = integer1 + integer2;
  printf("Sum is %d\n", sum);
  return 0;
}


x86 assembly (clang, -O0):
<fig02_05>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xed1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xed8(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xecb(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeba(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x4(%rbp),%eax
add    -0x8(%rbp),%eax
mov    %eax,-0xc(%rbp)
mov    -0xc(%rbp),%esi
lea    0xeb7(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<fig02_05>:
push   %rbx
sub    $0x10,%rsp
lea    0xed2(%rip),%rdi
call   1030 <puts@plt>
lea    0xeb8(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
lea    0xec6(%rip),%rdi
call   1030 <puts@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
mov    0x8(%rsp),%esi
add    0xc(%rsp),%esi
lea    0xe86(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [21 x i8] c"Enter first integer\0A\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [22 x i8] c"Enter second integer\0A\00"
@.str.3 = [11 x i8] c"Sum is %d\0A\00"
define i32 @fig02_05() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%8 = load i32, i32* %1
%9 = load i32, i32* %2
%10 = add nsw i32 %8, %9
store i32 %10, i32* %3
%11 = load i32, i32* %3
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.3, i64 0, i64 0), i32 %11)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%d\00"
@.str.3 = [11 x i8] c"Sum is %d\0A\00"
@str = [20 x i8] c"Enter first integer\00"
@str.4 = [21 x i8] c"Enter second integer\00"
define i32 @fig02_05() {
%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 ([20 x i8], [20 x i8]* @str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%7 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 x i8]* @str.4, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%9 = load i32, i32* %1
%10 = load i32, i32* %2
%11 = add nsw i32 %10, %9
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @.str.3, i64 0, i64 0), i32 %11)
ret i32 0
}