#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 */
float M_PI;
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, float *);
void cylinder_volume() {
  float h, r, v;
  printf("Height of cylinder: ");
  scanf("%f", &h);
  printf("Radius of cylinder: ");
  scanf("%f", &r);
  v = M_PI * r * r * h;
  printf("Volume is: %f", v);
  printf("\n");
}


x86 assembly (clang, -O0):
<cylinder_volume>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xed1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xef8(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xec8(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeda(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    0x2e7d(%rip),%rax
movss  (%rax),%xmm0
mulss  -0x8(%rbp),%xmm0
mulss  -0x8(%rbp),%xmm0
mulss  -0x4(%rbp),%xmm0
movss  %xmm0,-0xc(%rbp)
movss  -0xc(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xe97(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
lea    0xe97(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<cylinder_volume>:
push   %rbx
sub    $0x10,%rsp
lea    0xec4(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xeeb(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
lea    0xeb7(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
mov    0x2e6f(%rip),%rax
movss  0x8(%rsp),%xmm0
movss  (%rax),%xmm1
mulss  %xmm0,%xmm1
mulss  %xmm0,%xmm1
mulss  0xc(%rsp),%xmm1
xorps  %xmm0,%xmm0
cvtss2sd %xmm1,%xmm0
lea    0xe8b(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [21 x i8] c"Height of cylinder: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [21 x i8] c"Radius of cylinder: \00"
@M_PI = global float 0.000000e+00
@.str.3 = [14 x i8] c"Volume is: %f\00"
@.str.4 = [2 x i8] c"\0A\00"
define void @cylinder_volume() {
%1 = alloca float
%2 = alloca float
%3 = alloca float
%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), float* %1)
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 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* %2)
%8 = load float, float* @M_PI
%9 = load float, float* %2
%10 = fmul float %8, %9
%11 = load float, float* %2
%12 = fmul float %10, %11
%13 = load float, float* %1
%14 = fmul float %12, %13
store float %14, float* %3
%15 = load float, float* %3
%16 = fpext float %15 to double
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.3, i64 0, i64 0), double %16)
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.4, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [21 x i8] c"Height of cylinder: \00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [21 x i8] c"Radius of cylinder: \00"
@M_PI = global float 0.000000e+00
@.str.3 = [14 x i8] c"Volume is: %f\00"
define void @cylinder_volume() {
%1 = alloca float
%2 = alloca float
%3 = bitcast float* %1 to i8*
%4 = bitcast float* %2 to i8*
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 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 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 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* %2)
%9 = load float, float* @M_PI
%10 = load float, float* %2
%11 = fmul float %9, %10
%12 = fmul float %10, %11
%13 = load float, float* %1
%14 = fmul float %13, %12
%15 = fpext float %14 to double
%16 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.3, i64 0, i64 0), double %15)
%17 = call i32 @putchar(i32 10)
ret void
}