#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(void) {
  float speed;
  float size;
  printf("Enter your download speed in megabits per second(Mbs):\n");
  scanf("%f", &speed);
  printf("Enter the size of a file in megabytes(MB):\n");
  scanf("%f", &size);
  printf("At %.2f megabits per second, a file of %.2f megabytes\n", speed,
         size);
  printf("downloads in %.2f seconds.\n", size / (speed / 8.0f));
  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    0xef8(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xeeb(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeda(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1040 <scanf@plt>
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movss  -0xc(%rbp),%xmm1
cvtss2sd %xmm1,%xmm1
lea    0xee7(%rip),%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movss  -0xc(%rbp),%xmm0
movss  -0x8(%rbp),%xmm1
movss  0xe63(%rip),%xmm2
divss  %xmm2,%xmm1
divss  %xmm1,%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xef2(%rip),%rdi
mov    $0x1,%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    0xf1e(%rip),%rdi
call   1030 <puts@plt>
lea    0xebc(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
lea    0xf35(%rip),%rdi
call   1030 <puts@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
movss  0xc(%rsp),%xmm0
cvtss2sd %xmm0,%xmm0
movss  0x8(%rsp),%xmm1
cvtss2sd %xmm1,%xmm1
lea    0xe7e(%rip),%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0x8(%rsp),%xmm0
movss  0xc(%rsp),%xmm1
mulss  0xe5c(%rip),%xmm1
divss  %xmm1,%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xe8b(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [56 x i8] c"Enter your download speed in megabits per second(Mbs):\0A\00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [44 x i8] c"Enter the size of a file in megabytes(MB):\0A\00"
@.str.3 = [55 x i8] c"At %.2f megabits per second, a file of %.2f megabytes\0A\00"
@.str.4 = [28 x i8] c"downloads in %.2f seconds.\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
%3 = alloca float
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([56 x i8], [56 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), float* %2)
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([44 x i8], [44 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), float* %3)
%8 = load float, float* %2
%9 = fpext float %8 to double
%10 = load float, float* %3
%11 = fpext float %10 to double
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([55 x i8], [55 x i8]* @.str.3, i64 0, i64 0), double %9, double %11)
%13 = load float, float* %3
%14 = load float, float* %2
%15 = fdiv float %14, 8.000000e+00
%16 = fdiv float %13, %15
%17 = fpext float %16 to double
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.4, i64 0, i64 0), double %17)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%f\00"
@.str.3 = [55 x i8] c"At %.2f megabits per second, a file of %.2f megabytes\0A\00"
@.str.4 = [28 x i8] c"downloads in %.2f seconds.\0A\00"
@str = [55 x i8] c"Enter your download speed in megabits per second(Mbs):\00"
@str.5 = [43 x i8] c"Enter the size of a file in megabytes(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 ([55 x i8], [55 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 ([43 x i8], [43 x i8]* @str.5, 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* %1
%10 = fpext float %9 to double
%11 = load float, float* %2
%12 = fpext float %11 to double
%13 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([55 x i8], [55 x i8]* @.str.3, i64 0, i64 0), double %10, double %12)
%14 = load float, float* %2
%15 = load float, float* %1
%16 = fmul float %15, 1.250000e-01
%17 = fdiv float %14, %16
%18 = fpext float %17 to double
%19 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([28 x i8], [28 x i8]* @.str.4, i64 0, i64 0), double %18)
ret i32 0
}