#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);
float glmNormalizeVector4f(float v[4]) {
  float length;
  length = sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2] + v[3] * v[3]);
  if (length > 0) {
    v[0] /= length;
    v[1] /= length;
    v[2] /= length;
    v[3] /= length;
  }
  return length;
}


x86 assembly (clang, -O0):
<glmNormalizeVector4f>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rax
movss  (%rax),%xmm0
mov    -0x8(%rbp),%rax
movss  (%rax),%xmm2
mov    -0x8(%rbp),%rax
movss  0x4(%rax),%xmm1
mov    -0x8(%rbp),%rax
mulss  0x4(%rax),%xmm1
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
mov    -0x8(%rbp),%rax
movss  0x8(%rax),%xmm1
mov    -0x8(%rbp),%rax
movss  0x8(%rax),%xmm2
mulss  %xmm2,%xmm1
addss  %xmm0,%xmm1
mov    -0x8(%rbp),%rax
movss  0xc(%rax),%xmm0
mov    -0x8(%rbp),%rax
movss  0xc(%rax),%xmm2
mulss  %xmm2,%xmm0
addss  %xmm1,%xmm0
call   1030 <sqrt@plt>
movss  %xmm0,-0xc(%rbp)
movss  -0xc(%rbp),%xmm0
xorps  %xmm1,%xmm1
ucomiss %xmm1,%xmm0
jbe    11ef <glmNormalizeVector4f+0xdf>
movss  -0xc(%rbp),%xmm1
mov    -0x8(%rbp),%rax
movss  (%rax),%xmm0
divss  %xmm1,%xmm0
movss  %xmm0,(%rax)
movss  -0xc(%rbp),%xmm1
mov    -0x8(%rbp),%rax
movss  0x4(%rax),%xmm0
divss  %xmm1,%xmm0
movss  %xmm0,0x4(%rax)
movss  -0xc(%rbp),%xmm1
mov    -0x8(%rbp),%rax
movss  0x8(%rax),%xmm0
divss  %xmm1,%xmm0
movss  %xmm0,0x8(%rax)
movss  -0xc(%rbp),%xmm1
mov    -0x8(%rbp),%rax
movss  0xc(%rax),%xmm0
divss  %xmm1,%xmm0
movss  %xmm0,0xc(%rax)
movss  -0xc(%rbp),%xmm0
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<glmNormalizeVector4f>:
push   %rbx
mov    %rdi,%rbx
movss  (%rdi),%xmm0
movss  0x4(%rdi),%xmm1
mulss  %xmm1,%xmm1
mulss  %xmm0,%xmm0
addss  %xmm1,%xmm0
movss  0x8(%rdi),%xmm1
mulss  %xmm1,%xmm1
addss  %xmm0,%xmm1
movss  0xc(%rdi),%xmm0
mulss  %xmm0,%xmm0
addss  %xmm1,%xmm0
xorps  %xmm1,%xmm1
ucomiss %xmm1,%xmm0
jb     1156 <glmNormalizeVector4f+0x46>
sqrtss %xmm0,%xmm0
ucomiss %xmm1,%xmm0
ja     1163 <glmNormalizeVector4f+0x53>
jmp    1173 <glmNormalizeVector4f+0x63>
call   1030 <sqrt@plt>
xorps  %xmm1,%xmm1
ucomiss %xmm1,%xmm0
jbe    1173 <glmNormalizeVector4f+0x63>
movups (%rbx),%xmm1
movaps %xmm0,%xmm2
shufps $0x0,%xmm0,%xmm2
divps  %xmm2,%xmm1
movups %xmm1,(%rbx)
pop    %rbx
ret

LLVM IR (-O0):
define float @glmNormalizeVector4f(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 = load float*, float** %2
%26 = getelementptr inbounds float, float* %25, i64 3
%27 = load float, float* %26
%28 = load float*, float** %2
%29 = getelementptr inbounds float, float* %28, i64 3
%30 = load float, float* %29
%31 = call float @llvm.fmuladd.f32(float %27, float %30, float %24)
%32 = call float @sqrt(float %31)
store float %32, float* %3
%33 = load float, float* %3
%34 = fcmp ogt float %33, 0.000000e+00
br i1 %34, label %35, label %56
35: ; preds = %1
%36 = load float, float* %3
%37 = load float*, float** %2
%38 = getelementptr inbounds float, float* %37, i64 0
%39 = load float, float* %38
%40 = fdiv float %39, %36
store float %40, float* %38
%41 = load float, float* %3
%42 = load float*, float** %2
%43 = getelementptr inbounds float, float* %42, i64 1
%44 = load float, float* %43
%45 = fdiv float %44, %41
store float %45, float* %43
%46 = load float, float* %3
%47 = load float*, float** %2
%48 = getelementptr inbounds float, float* %47, i64 2
%49 = load float, float* %48
%50 = fdiv float %49, %46
store float %50, float* %48
%51 = load float, float* %3
%52 = load float*, float** %2
%53 = getelementptr inbounds float, float* %52, i64 3
%54 = load float, float* %53
%55 = fdiv float %54, %51
store float %55, float* %53
br label %56
56: ; preds = %35, %1
%57 = load float, float* %3
ret float %57
}

LLVM IR (-O2):
define float @glmNormalizeVector4f(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 = getelementptr inbounds float, float* %0, i64 3
%11 = load float, float* %10
%12 = tail call float @llvm.fmuladd.f32(float %11, float %11, float %9)
%13 = tail call float @sqrt(float %12)
%14 = fcmp ogt float %13, 0.000000e+00
br i1 %14, label %15, label %22
15: ; preds = %1
%16 = bitcast float* %0 to <4 x float>*
%17 = load <4 x float>, <4 x float>* %16
%18 = insertelement <4 x float> poison, float %13, i64 0
%19 = shufflevector <4 x float> %18, <4 x float> poison, <4 x i32> zeroinitializer
%20 = fdiv <4 x float> %17, %19
%21 = bitcast float* %0 to <4 x float>*
store <4 x float> %20, <4 x float>* %21
br label %22
22: ; preds = %15, %1
ret float %13
}