#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 sqrt(float);
void vnorm(float vec[3]) {
  float len;
  len = sqrt(vec[0] * vec[0] + vec[1] * vec[1] + vec[2] * vec[2]);
  vec[0] = vec[0] / len;
  vec[1] = vec[1] / len;
  vec[2] = vec[2] / len;
}


x86 assembly (clang, -O0):
<vnorm>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rax
movss  (%rax),%xmm1
mov    -0x8(%rbp),%rax
movss  (%rax),%xmm2
mov    -0x8(%rbp),%rax
movss  0x4(%rax),%xmm0
mov    -0x8(%rbp),%rax
mulss  0x4(%rax),%xmm0
mulss  %xmm2,%xmm1
addss  %xmm0,%xmm1
mov    -0x8(%rbp),%rax
movss  0x8(%rax),%xmm0
mov    -0x8(%rbp),%rax
movss  0x8(%rax),%xmm2
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
call   1030 <sqrt@plt>
movss  %xmm0,-0xc(%rbp)
mov    -0x8(%rbp),%rax
movss  (%rax),%xmm0
divss  -0xc(%rbp),%xmm0
mov    -0x8(%rbp),%rax
movss  %xmm0,(%rax)
mov    -0x8(%rbp),%rax
movss  0x4(%rax),%xmm0
divss  -0xc(%rbp),%xmm0
mov    -0x8(%rbp),%rax
movss  %xmm0,0x4(%rax)
mov    -0x8(%rbp),%rax
movss  0x8(%rax),%xmm0
divss  -0xc(%rbp),%xmm0
mov    -0x8(%rbp),%rax
movss  %xmm0,0x8(%rax)
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<vnorm>:
push   %rbx
mov    %rdi,%rbx
movss  (%rdi),%xmm1
movss  0x4(%rdi),%xmm0
mulss  %xmm0,%xmm0
mulss  %xmm1,%xmm1
addss  %xmm0,%xmm1
movss  0x8(%rdi),%xmm0
mulss  %xmm0,%xmm0
addss  %xmm1,%xmm0
xorps  %xmm1,%xmm1
ucomiss %xmm1,%xmm0
jb     1144 <vnorm+0x34>
sqrtss %xmm0,%xmm0
jmp    1149 <vnorm+0x39>
call   1030 <sqrt@plt>
movss  (%rbx),%xmm1
movss  0x4(%rbx),%xmm2
divss  %xmm0,%xmm1
movss  %xmm1,(%rbx)
divss  %xmm0,%xmm2
movss  %xmm2,0x4(%rbx)
movss  0x8(%rbx),%xmm1
divss  %xmm0,%xmm1
movss  %xmm1,0x8(%rbx)
pop    %rbx
ret

LLVM IR (-O0):
define void @vnorm(float* %0) {
%2 = alloca float*
%3 = alloca float
store float* %0, float** %2
%4 = load float*, float** %2
%5 = getelementptr inbounds float, float* %4, i64 0
%6 = load float, float* %5
%7 = load float*, float** %2
%8 = getelementptr inbounds float, float* %7, i64 0
%9 = load float, float* %8
%10 = load float*, float** %2
%11 = getelementptr inbounds float, float* %10, i64 1
%12 = load float, float* %11
%13 = load float*, float** %2
%14 = getelementptr inbounds float, float* %13, i64 1
%15 = load float, float* %14
%16 = fmul float %12, %15
%17 = call float @llvm.fmuladd.f32(float %6, float %9, float %16)
%18 = load float*, float** %2
%19 = getelementptr inbounds float, float* %18, i64 2
%20 = load float, float* %19
%21 = load float*, float** %2
%22 = getelementptr inbounds float, float* %21, i64 2
%23 = load float, float* %22
%24 = call float @llvm.fmuladd.f32(float %20, float %23, float %17)
%25 = call float @sqrt(float %24)
store float %25, float* %3
%26 = load float*, float** %2
%27 = getelementptr inbounds float, float* %26, i64 0
%28 = load float, float* %27
%29 = load float, float* %3
%30 = fdiv float %28, %29
%31 = load float*, float** %2
%32 = getelementptr inbounds float, float* %31, i64 0
store float %30, float* %32
%33 = load float*, float** %2
%34 = getelementptr inbounds float, float* %33, i64 1
%35 = load float, float* %34
%36 = load float, float* %3
%37 = fdiv float %35, %36
%38 = load float*, float** %2
%39 = getelementptr inbounds float, float* %38, i64 1
store float %37, float* %39
%40 = load float*, float** %2
%41 = getelementptr inbounds float, float* %40, i64 2
%42 = load float, float* %41
%43 = load float, float* %3
%44 = fdiv float %42, %43
%45 = load float*, float** %2
%46 = getelementptr inbounds float, float* %45, i64 2
store float %44, float* %46
ret void
}

LLVM IR (-O2):
define void @vnorm(float* nocapture %0) {
%2 = load float, float* %0
%3 = getelementptr inbounds float, float* %0, i64 1
%4 = load float, float* %3
%5 = fmul float %4, %4
%6 = tail call float @llvm.fmuladd.f32(float %2, float %2, float %5)
%7 = getelementptr inbounds float, float* %0, i64 2
%8 = load float, float* %7
%9 = tail call float @llvm.fmuladd.f32(float %8, float %8, float %6)
%10 = tail call float @sqrt(float %9)
%11 = load float, float* %0
%12 = fdiv float %11, %10
store float %12, float* %0
%13 = load float, float* %3
%14 = fdiv float %13, %10
store float %14, float* %3
%15 = load float, float* %7
%16 = fdiv float %15, %10
store float %16, float* %7
ret void
}