#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 *, float *);
int main() {
  float speed, size, time;
  printf("Please enter your download speed(Mb/s):\n");
  scanf("%f", &speed);
  printf("Please enter the size of file(MB):\n");
  scanf("%f", &size);
  time = size * 8 / speed;
  printf("At %.2f megabits per second, a file of %.2f megabytes\ndownloads in "
         "%.2f seconds.\n",
         speed, size, time);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xece(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xee9(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xedc(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xecb(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1040 <scanf@plt>
movss  0xe8d(%rip),%xmm0
mulss  -0xc(%rbp),%xmm0
divss  -0x8(%rbp),%xmm0
movss  %xmm0,-0x10(%rbp)
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movss  -0xc(%rbp),%xmm1
cvtss2sd %xmm1,%xmm1
movss  -0x10(%rbp),%xmm2
cvtss2sd %xmm2,%xmm2
lea    0xeb0(%rip),%rdi
mov    $0x3,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xf1d(%rip),%rdi
call   1030 <puts@plt>
lea    0xebc(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
lea    0xf25(%rip),%rdi
call   1030 <puts@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
movss  0x8(%rsp),%xmm1
movss  0xe84(%rip),%xmm2
mulss  %xmm1,%xmm2
movss  0xc(%rsp),%xmm0
divss  %xmm0,%xmm2
cvtss2sd %xmm0,%xmm0
cvtss2sd %xmm1,%xmm1
cvtss2sd %xmm2,%xmm2
lea    0xe6a(%rip),%rdi
mov    $0x3,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [41 x i8] c"Please enter your download speed(Mb/s):\0A\00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [36 x i8] c"Please enter the size of file(MB):\0A\00"
@.str.3 = [82 x i8] c"At %.2f megabits per second, a file of %.2f megabytes\0Adownloads in %.2f seconds.\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
%3 = alloca float
%4 = alloca float
store i32 0, i32* %1
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([41 x i8], [41 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), float* %2)
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.2, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %3)
%9 = load float, float* %3
%10 = fmul float %9, 8.000000e+00
%11 = load float, float* %2
%12 = fdiv float %10, %11
store float %12, float* %4
%13 = load float, float* %2
%14 = fpext float %13 to double
%15 = load float, float* %3
%16 = fpext float %15 to double
%17 = load float, float* %4
%18 = fpext float %17 to double
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([82 x i8], [82 x i8]* @.str.3, i64 0, i64 0), double %14, double %16, double %18)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%f\00"
@.str.3 = [82 x i8] c"At %.2f megabits per second, a file of %.2f megabytes\0Adownloads in %.2f seconds.\0A\00"
@str = [40 x i8] c"Please enter your download speed(Mb/s):\00"
@str.4 = [35 x i8] c"Please enter the size of file(MB):\00"
define i32 @main() {
%1 = alloca float
%2 = alloca float
%3 = bitcast float* %1 to i8*
%4 = bitcast float* %2 to i8*
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([40 x i8], [40 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), float* %1)
%7 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 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), float* %2)
%9 = load float, float* %2
%10 = fmul float %9, 8.000000e+00
%11 = load float, float* %1
%12 = fdiv float %10, %11
%13 = fpext float %11 to double
%14 = fpext float %9 to double
%15 = fpext float %12 to double
%16 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([82 x i8], [82 x i8]* @.str.3, i64 0, i64 0), double %13, double %14, double %15)
ret i32 0
}