; LLVM IR from ysyesilyurt/ComputerGraphics :: RayTracing/Light.ll (ZN10PointLight24computeLightContributionERK8Vector3f)

; 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.Vector3f = type { %union.anon, %union.anon.0, %union.anon.1 }
%union.anon = type { float }
%union.anon.0 = type { float }
%union.anon.1 = type { float }
%class.PointLight = type { %struct.Vector3f, %struct.Vector3f }

; 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) #0

; Function Attrs: mustprogress uwtable
define dso_local { <2 x float>, float } @_ZN10PointLight24computeLightContributionERK8Vector3f(ptr noundef nonnull align 4 dereferenceable(24) %0, ptr noundef nonnull align 4 dereferenceable(12) %1) #1 align 2 {
  %3 = alloca %struct.Vector3f, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca %struct.Vector3f, align 4
  %7 = alloca %struct.Vector3f, align 4
  %8 = alloca { <2 x float>, float }, align 4
  %9 = alloca { <2 x float>, float }, align 8
  %10 = alloca float, align 4
  %11 = alloca { <2 x float>, float }, align 8
  %12 = alloca { <2 x float>, float }, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %13 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 12, ptr %6) #6
  %14 = getelementptr inbounds %class.PointLight, ptr %13, i32 0, i32 0
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %7, ptr align 4 %15, i64 12, i1 false), !tbaa.struct !9
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %8, ptr align 4 %7, i64 12, i1 false)
  %16 = getelementptr inbounds { <2 x float>, float }, ptr %8, i32 0, i32 0
  %17 = load <2 x float>, ptr %16, align 4
  %18 = getelementptr inbounds { <2 x float>, float }, ptr %8, i32 0, i32 1
  %19 = load float, ptr %18, align 4
  %20 = call { <2 x float>, float } @_ZNK8Vector3fmiES_(ptr noundef nonnull align 4 dereferenceable(12) %14, <2 x float> %17, float %19)
  store { <2 x float>, float } %20, ptr %9, align 8
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %6, ptr align 8 %9, i64 12, i1 false)
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #6
  %21 = call noundef float @_Z12vectorLengthRK8Vector3f(ptr noundef nonnull align 4 dereferenceable(12) %6)
  store float %21, ptr %10, align 4, !tbaa !11
  %22 = getelementptr inbounds %class.PointLight, ptr %13, i32 0, i32 1
  %23 = load float, ptr %10, align 4, !tbaa !11
  %24 = load float, ptr %10, align 4, !tbaa !11
  %25 = fmul float %23, %24
  %26 = call { <2 x float>, float } @_ZNK8Vector3fdvEf(ptr noundef nonnull align 4 dereferenceable(12) %22, float noundef %25)
  store { <2 x float>, float } %26, ptr %11, align 8
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %3, ptr align 8 %11, i64 12, i1 false)
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #6
  call void @llvm.lifetime.end.p0(i64 12, ptr %6) #6
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %12, ptr align 4 %3, i64 12, i1 false)
  %27 = load { <2 x float>, float }, ptr %12, align 8
  ret { <2 x float>, float } %27
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local { <2 x float>, float } @_ZNK8Vector3fmiES_(ptr noundef nonnull align 4 dereferenceable(12), <2 x float>, float) #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef float @_Z12vectorLengthRK8Vector3f(ptr noundef nonnull align 4 dereferenceable(12)) #4

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local { <2 x float>, float } @_ZNK8Vector3fdvEf(ptr noundef nonnull align 4 dereferenceable(12), float noundef) #5 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

attributes #0 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress uwtable "min-legal-vector-width"="64" "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 #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="64" "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 #4 = { inlinehint 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 #5 = { 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 #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 = !{i64 0, i64 4, !10, i64 4, i64 4, !10, i64 8, i64 4, !10}
!10 = !{!7, !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"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.Vector3f = type { %union.anon, %union.anon.0, %union.anon.1 }
%union.anon = type { float }
%union.anon.0 = type { float }
%union.anon.1 = type { float }

; Function Attrs: mustprogress uwtable
define dso_local { <2 x float>, float } @_ZN10PointLight24computeLightContributionERK8Vector3f(ptr noundef nonnull align 4 dereferenceable(24) %0, ptr nocapture noundef nonnull readonly align 4 dereferenceable(12) %1) local_unnamed_addr #0 align 2 {
  %3 = alloca %struct.Vector3f, align 8
  call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %3) #5
  %.sroa.010.0.copyload = load <2 x float>, ptr %1, align 4
  %.sroa.211.0..sroa_idx = getelementptr inbounds i8, ptr %1, i64 8
  %.sroa.211.0.copyload = load float, ptr %.sroa.211.0..sroa_idx, align 4, !tbaa !5
  %4 = tail call { <2 x float>, float } @_ZNK8Vector3fmiES_(ptr noundef nonnull align 4 dereferenceable(12) %0, <2 x float> %.sroa.010.0.copyload, float %.sroa.211.0.copyload)
  %.fca.0.extract4 = extractvalue { <2 x float>, float } %4, 0
  %.fca.1.extract5 = extractvalue { <2 x float>, float } %4, 1
  store <2 x float> %.fca.0.extract4, ptr %3, align 8
  %.sroa.27.0..sroa_idx = getelementptr inbounds i8, ptr %3, i64 8
  store float %.fca.1.extract5, ptr %.sroa.27.0..sroa_idx, align 8
  %5 = call noundef float @_Z12vectorLengthRK8Vector3f(ptr noundef nonnull align 4 dereferenceable(12) %3)
  %6 = getelementptr inbounds i8, ptr %0, i64 12
  %7 = fmul float %5, %5
  %8 = call { <2 x float>, float } @_ZNK8Vector3fdvEf(ptr noundef nonnull align 4 dereferenceable(12) %6, float noundef %7)
  call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %3) #5
  ret { <2 x float>, float } %8
}

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local { <2 x float>, float } @_ZNK8Vector3fmiES_(ptr noundef nonnull align 4 dereferenceable(12), <2 x float>, float) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef float @_Z12vectorLengthRK8Vector3f(ptr noundef nonnull align 4 dereferenceable(12)) local_unnamed_addr #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local { <2 x float>, float } @_ZNK8Vector3fdvEf(ptr noundef nonnull align 4 dereferenceable(12), float noundef) local_unnamed_addr #4 align 2

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

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="64" "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 willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="64" "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 = { inlinehint 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 #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 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}


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