; LLVM IR from Dovyski/opengl-demos :: src/bumpmap/main.ll (Z14ilumina_difusa6Vectori)

; 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"

%class.Vector = type { float, float, float }

@normal = external dso_local global %class.Vector, align 4
@light = external dso_local global %class.Vector, align 4

; Function Attrs: mustprogress uwtable
define dso_local noundef float @_Z14ilumina_difusa6Vectori(<2 x float> %0, float %1, i32 noundef %2) #0 {
  %4 = alloca float, align 4
  %5 = alloca %class.Vector, align 4
  %6 = alloca { <2 x float>, float }, align 4
  %7 = alloca i32, align 4
  %8 = alloca float, align 4
  %9 = alloca %class.Vector, align 4
  %10 = alloca { <2 x float>, float }, align 8
  %11 = alloca %class.Vector, align 4
  %12 = alloca i32, align 4
  %13 = getelementptr inbounds { <2 x float>, float }, ptr %6, i32 0, i32 0
  store <2 x float> %0, ptr %13, align 4
  %14 = getelementptr inbounds { <2 x float>, float }, ptr %6, i32 0, i32 1
  store float %1, ptr %14, align 4
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %5, ptr align 4 %6, i64 12, i1 false)
  store i32 %2, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #6
  %15 = getelementptr inbounds %class.Vector, ptr %5, i32 0, i32 0
  %16 = load float, ptr %15, align 4, !tbaa !9
  %17 = fpext float %16 to double
  %18 = fdiv double %17, 2.000000e+00
  %19 = call double @cos(double noundef %18) #6
  %20 = fptrunc double %19 to float
  store float %20, ptr %8, align 4, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 12, ptr %9) #6
  %21 = call { <2 x float>, float } @_ZN6VectormiERKS_(ptr noundef nonnull align 4 dereferenceable(12) @light, ptr noundef nonnull align 4 dereferenceable(12) %5)
  store { <2 x float>, float } %21, ptr %10, align 8
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %9, ptr align 8 %10, i64 12, i1 false)
  call void @_ZN6Vector9normalizeEv(ptr noundef nonnull align 4 dereferenceable(12) %9)
  call void @llvm.lifetime.start.p0(i64 12, ptr %11) #6
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %11, ptr align 4 @normal, i64 12, i1 false), !tbaa.struct !13
  %22 = load float, ptr %8, align 4, !tbaa !12
  %23 = getelementptr inbounds %class.Vector, ptr %11, i32 0, i32 0
  %24 = load float, ptr %23, align 4, !tbaa !9
  %25 = fadd float %24, %22
  store float %25, ptr %23, align 4, !tbaa !9
  call void @_ZN6Vector9normalizeEv(ptr noundef nonnull align 4 dereferenceable(12) %11)
  %26 = load i32, ptr %7, align 4, !tbaa !5
  %27 = icmp eq i32 %26, 1
  br i1 %27, label %28, label %31

28:                                               ; preds = %3
  %29 = call noundef float @_ZNK6Vector3dotERKS_(ptr noundef nonnull align 4 dereferenceable(12) %11, ptr noundef nonnull align 4 dereferenceable(12) %9)
  %30 = fmul float 1.000000e+00, %29
  store float %30, ptr %4, align 4
  store i32 1, ptr %12, align 4
  br label %34

31:                                               ; preds = %3
  %32 = call noundef float @_ZNK6Vector3dotERKS_(ptr noundef nonnull align 4 dereferenceable(12) @normal, ptr noundef nonnull align 4 dereferenceable(12) %9)
  %33 = fmul float 1.000000e+00, %32
  store float %33, ptr %4, align 4
  store i32 1, ptr %12, align 4
  br label %34

34:                                               ; preds = %31, %28
  call void @llvm.lifetime.end.p0(i64 12, ptr %11) #6
  call void @llvm.lifetime.end.p0(i64 12, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  %35 = load float, ptr %4, align 4
  ret float %35
}

; 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) #1

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

; Function Attrs: nounwind
declare double @cos(double noundef) #3

; Function Attrs: mustprogress uwtable
declare dso_local { <2 x float>, float } @_ZN6VectormiERKS_(ptr noundef nonnull align 4 dereferenceable(12), ptr noundef nonnull align 4 dereferenceable(12)) #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN6Vector9normalizeEv(ptr noundef nonnull align 4 dereferenceable(12)) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef float @_ZNK6Vector3dotERKS_(ptr noundef nonnull align 4 dereferenceable(12), ptr noundef nonnull align 4 dereferenceable(12)) #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 = { 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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { 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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"_ZTS6Vector", !11, i64 0, !11, i64 4, !11, i64 8}
!11 = !{!"float", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{i64 0, i64 4, !12, i64 4, i64 4, !12, i64 8, i64 4, !12}


; 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"

%class.Vector = type { float, float, float }

@normal = external dso_local global %class.Vector, align 4
@light = external dso_local global %class.Vector, align 4

; Function Attrs: mustprogress uwtable
define dso_local noundef float @_Z14ilumina_difusa6Vectori(<2 x float> %0, float %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = alloca %class.Vector, align 8
  %5 = alloca %class.Vector, align 8
  %6 = alloca %class.Vector, align 4
  store <2 x float> %0, ptr %4, align 8
  %.sroa.22.0..sroa_idx = getelementptr inbounds i8, ptr %4, i64 8
  store float %1, ptr %.sroa.22.0..sroa_idx, align 8
  %7 = extractelement <2 x float> %0, i64 0
  %8 = fpext float %7 to double
  %9 = fmul double %8, 5.000000e-01
  %10 = tail call double @cos(double noundef %9) #6
  %11 = fptrunc double %10 to float
  call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %5) #6
  %12 = call { <2 x float>, float } @_ZN6VectormiERKS_(ptr noundef nonnull align 4 dereferenceable(12) @light, ptr noundef nonnull align 4 dereferenceable(12) %4)
  %.fca.0.extract = extractvalue { <2 x float>, float } %12, 0
  %.fca.1.extract = extractvalue { <2 x float>, float } %12, 1
  store <2 x float> %.fca.0.extract, ptr %5, align 8
  %.sroa.2.0..sroa_idx = getelementptr inbounds i8, ptr %5, i64 8
  store float %.fca.1.extract, ptr %.sroa.2.0..sroa_idx, align 8
  call void @_ZN6Vector9normalizeEv(ptr noundef nonnull align 4 dereferenceable(12) %5)
  call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %6) #6
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 4 dereferenceable(12) %6, ptr noundef nonnull align 4 dereferenceable(12) @normal, i64 12, i1 false), !tbaa.struct !5
  %13 = load float, ptr %6, align 4, !tbaa !10
  %14 = fadd float %13, %11
  store float %14, ptr %6, align 4, !tbaa !10
  call void @_ZN6Vector9normalizeEv(ptr noundef nonnull align 4 dereferenceable(12) %6)
  %15 = icmp eq i32 %2, 1
  %.normal = select i1 %15, ptr %6, ptr @normal
  %16 = call noundef float @_ZNK6Vector3dotERKS_(ptr noundef nonnull align 4 dereferenceable(12) %.normal, ptr noundef nonnull align 4 dereferenceable(12) %5)
  call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %6) #6
  call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %5) #6
  ret float %16
}

; Function Attrs: mustprogress 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) #1

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

; Function Attrs: mustprogress nofree nounwind willreturn memory(write)
declare double @cos(double noundef) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare dso_local { <2 x float>, float } @_ZN6VectormiERKS_(ptr noundef nonnull align 4 dereferenceable(12), ptr noundef nonnull align 4 dereferenceable(12)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN6Vector9normalizeEv(ptr noundef nonnull align 4 dereferenceable(12)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef float @_ZNK6Vector3dotERKS_(ptr noundef nonnull align 4 dereferenceable(12), ptr noundef nonnull align 4 dereferenceable(12)) local_unnamed_addr #5 align 2

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

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 nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { mustprogress nofree nounwind willreturn memory(write) "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 = { 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 = { 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 = !{i64 0, i64 4, !6, i64 4, i64 4, !6, i64 8, i64 4, !6}
!6 = !{!7, !7, i64 0}
!7 = !{!"float", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!11, !7, i64 0}
!11 = !{!"_ZTS6Vector", !7, i64 0, !7, i64 4, !7, i64 8}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass