; LLVM IR from achilles288/robot-monitor-graphics :: src/base/math/vec3.ll (ZNK3rmg4Vec39normalizeEv)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"struct.rmg::Vec3" = type { %union.anon }
%union.anon = type { %struct.anon }
%struct.anon = type { float, float, float }

; Function Attrs: mustprogress uwtable
define dso_local { <2 x float>, float } @_ZNK3rmg4Vec39normalizeEv(ptr noundef nonnull align 4 dereferenceable(12) %0) #0 align 2 {
  %2 = alloca %"struct.rmg::Vec3", align 4
  %3 = alloca ptr, align 8
  %4 = alloca float, align 4
  %5 = alloca { <2 x float>, float }, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  %7 = getelementptr inbounds %"struct.rmg::Vec3", ptr %6, i32 0, i32 0
  %8 = getelementptr inbounds %struct.anon, ptr %7, i32 0, i32 0
  %9 = load float, ptr %8, align 4, !tbaa !9
  %10 = getelementptr inbounds %"struct.rmg::Vec3", ptr %6, i32 0, i32 0
  %11 = getelementptr inbounds %struct.anon, ptr %10, i32 0, i32 0
  %12 = load float, ptr %11, align 4, !tbaa !9
  %13 = getelementptr inbounds %"struct.rmg::Vec3", ptr %6, i32 0, i32 0
  %14 = getelementptr inbounds %struct.anon, ptr %13, i32 0, i32 1
  %15 = load float, ptr %14, align 4, !tbaa !9
  %16 = getelementptr inbounds %"struct.rmg::Vec3", ptr %6, i32 0, i32 0
  %17 = getelementptr inbounds %struct.anon, ptr %16, i32 0, i32 1
  %18 = load float, ptr %17, align 4, !tbaa !9
  %19 = fmul float %15, %18
  %20 = call float @llvm.fmuladd.f32(float %9, float %12, float %19)
  %21 = getelementptr inbounds %"struct.rmg::Vec3", ptr %6, i32 0, i32 0
  %22 = getelementptr inbounds %struct.anon, ptr %21, i32 0, i32 2
  %23 = load float, ptr %22, align 4, !tbaa !9
  %24 = getelementptr inbounds %"struct.rmg::Vec3", ptr %6, i32 0, i32 0
  %25 = getelementptr inbounds %struct.anon, ptr %24, i32 0, i32 2
  %26 = load float, ptr %25, align 4, !tbaa !9
  %27 = call float @llvm.fmuladd.f32(float %23, float %26, float %20)
  %28 = fpext float %27 to double
  %29 = call double @sqrt(double noundef %28) #6
  %30 = fptrunc double %29 to float
  store float %30, ptr %4, align 4, !tbaa !10
  call void @_ZN3rmg4Vec3C2Ev(ptr noundef nonnull align 4 dereferenceable(12) %2)
  %31 = getelementptr inbounds %"struct.rmg::Vec3", ptr %6, i32 0, i32 0
  %32 = getelementptr inbounds %struct.anon, ptr %31, i32 0, i32 0
  %33 = load float, ptr %32, align 4, !tbaa !9
  %34 = load float, ptr %4, align 4, !tbaa !10
  %35 = fdiv float %33, %34
  %36 = getelementptr inbounds %"struct.rmg::Vec3", ptr %2, i32 0, i32 0
  %37 = getelementptr inbounds %struct.anon, ptr %36, i32 0, i32 0
  store float %35, ptr %37, align 4, !tbaa !9
  %38 = getelementptr inbounds %"struct.rmg::Vec3", ptr %6, i32 0, i32 0
  %39 = getelementptr inbounds %struct.anon, ptr %38, i32 0, i32 1
  %40 = load float, ptr %39, align 4, !tbaa !9
  %41 = load float, ptr %4, align 4, !tbaa !10
  %42 = fdiv float %40, %41
  %43 = getelementptr inbounds %"struct.rmg::Vec3", ptr %2, i32 0, i32 0
  %44 = getelementptr inbounds %struct.anon, ptr %43, i32 0, i32 1
  store float %42, ptr %44, align 4, !tbaa !9
  %45 = getelementptr inbounds %"struct.rmg::Vec3", ptr %6, i32 0, i32 0
  %46 = getelementptr inbounds %struct.anon, ptr %45, i32 0, i32 2
  %47 = load float, ptr %46, align 4, !tbaa !9
  %48 = load float, ptr %4, align 4, !tbaa !10
  %49 = fdiv float %47, %48
  %50 = getelementptr inbounds %"struct.rmg::Vec3", ptr %2, i32 0, i32 0
  %51 = getelementptr inbounds %struct.anon, ptr %50, i32 0, i32 2
  store float %49, ptr %51, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  %52 = getelementptr inbounds %"struct.rmg::Vec3", ptr %2, i32 0, i32 0
  %53 = getelementptr inbounds %union.anon, ptr %52, i32 0, i32 0
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %5, ptr align 4 %53, i64 12, i1 false)
  %54 = load { <2 x float>, float }, ptr %5, align 8
  ret { <2 x float>, float } %54
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind
declare double @sqrt(double noundef) #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3rmg4Vec3C2Ev(ptr noundef nonnull align 4 dereferenceable(12)) unnamed_addr #4 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #5

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #6 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"float", !7, i64 0}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"struct.rmg::Vec3" = type { %union.anon }
%union.anon = type { %struct.anon }
%struct.anon = type { float, float, float }

; Function Attrs: mustprogress nounwind uwtable
define dso_local { <2 x float>, float } @_ZNK3rmg4Vec39normalizeEv(ptr nocapture noundef nonnull readonly align 4 dereferenceable(12) %0) local_unnamed_addr #0 align 2 {
  %2 = alloca %"struct.rmg::Vec3", align 8
  %3 = load float, ptr %0, align 4, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 4
  %5 = load float, ptr %4, align 4, !tbaa !5
  %6 = fmul float %5, %5
  %7 = tail call float @llvm.fmuladd.f32(float %3, float %3, float %6)
  %8 = getelementptr inbounds i8, ptr %0, i64 8
  %9 = load float, ptr %8, align 4, !tbaa !5
  %10 = tail call float @llvm.fmuladd.f32(float %9, float %9, float %7)
  %sqrt = tail call float @llvm.sqrt.f32(float %10)
  call void @_ZN3rmg4Vec3C2Ev(ptr noundef nonnull align 4 dereferenceable(12) %2)
  %11 = load <2 x float>, ptr %0, align 4, !tbaa !5
  %12 = insertelement <2 x float> poison, float %sqrt, i64 0
  %13 = shufflevector <2 x float> %12, <2 x float> poison, <2 x i32> zeroinitializer
  %14 = fdiv <2 x float> %11, %13
  store <2 x float> %14, ptr %2, align 8, !tbaa !5
  %15 = load float, ptr %8, align 4, !tbaa !5
  %16 = fdiv float %15, %sqrt
  %.fca.0.insert = insertvalue { <2 x float>, float } poison, <2 x float> %14, 0
  %.fca.1.insert = insertvalue { <2 x float>, float } %.fca.0.insert, float %16, 1
  ret { <2 x float>, float } %.fca.1.insert
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #1

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3rmg4Vec3C2Ev(ptr noundef nonnull align 4 dereferenceable(12)) unnamed_addr #2 align 2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.sqrt.f32(float) #3

attributes #0 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}


; Effective O3 passes: AggressiveInstCombinePass,DSEPass,EarlyCSEPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,TailCallElimPass