#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 scanf(char *, long *);
int main(void) {
  long num;
  long sum = 0L;
  int status;
  printf("Please enter an integer to be summed ");
  printf("(q to quit): ");
  status = scanf("%ld", &num);
  while (status = 1) {
    sum = sum + num;
    printf("Please enter next integer (q to quit): ");
    status = scanf("%ld", &num);
  }
  printf("Those integer num to %ld.\n", sum);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movq   $0x0,-0x18(%rbp)
lea    0xec2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xef8(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xecc(%rip),%rdi
lea    -0x10(%rbp),%rsi
call   1040 <scanf@plt>
mov    %eax,-0x1c(%rbp)
movl   $0x1,-0x1c(%rbp)
mov    -0x18(%rbp),%rax
add    -0x10(%rbp),%rax
mov    %rax,-0x18(%rbp)
lea    0xeaa(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xe98(%rip),%rdi
lea    -0x10(%rbp),%rsi
call   1040 <scanf@plt>
mov    %eax,-0x1c(%rbp)
jmp    1166 <main+0x46>

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
sub    $0x10,%rsp
lea    0xed0(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xf06(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xeda(%rip),%r14
lea    0x8(%rsp),%r15
mov    %r14,%rdi
mov    %r15,%rsi
call   1040 <scanf@plt>
lea    0xec7(%rip),%rbx
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
mov    %rbx,%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %r14,%rdi
mov    %r15,%rsi
call   1040 <scanf@plt>
jmp    1170 <main+0x50>

LLVM IR (-O0):
@.str = [38 x i8] c"Please enter an integer to be summed \00"
@.str.1 = [14 x i8] c"(q to quit): \00"
@.str.2 = [4 x i8] c"%ld\00"
@.str.3 = [40 x i8] c"Please enter next integer (q to quit): \00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i64
%3 = alloca i64
%4 = alloca i32
store i32 0, i32* %1
store i64 0, i64* %3
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([38 x i8], [38 x i8]* @.str, i64 0, i64 0))
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i64* %2)
store i32 %7, i32* %4
br label %8
8: ; preds = %9, %0
store i32 1, i32* %4
br label %9
9: ; preds = %8
%10 = load i64, i64* %3
%11 = load i64, i64* %2
%12 = add nsw i64 %10, %11
store i64 %12, i64* %3
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str.3, i64 0, i64 0))
%14 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i64* %2)
store i32 %14, i32* %4
br label %8
}

LLVM IR (-O2):
@.str = [38 x i8] c"Please enter an integer to be summed \00"
@.str.1 = [14 x i8] c"(q to quit): \00"
@.str.2 = [4 x i8] c"%ld\00"
@.str.3 = [40 x i8] c"Please enter next integer (q to quit): \00"
define i32 @main() {
%1 = alloca i64
%2 = bitcast i64* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([38 x i8], [38 x i8]* @.str, i64 0, i64 0))
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i64* %1)
br label %6
6: ; preds = %6, %0
%7 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([40 x i8], [40 x i8]* @.str.3, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i64* %1)
br label %6
}