; LLVM IR from johnb003/PlasmaSim :: adMath/src/adVector.ll (ZN2ad4Vec414Normalize3SafeEd)

; 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.ad::Vec4" = type { double, double, double, double }

@_ZN2ad4Vec47m_UnitXE = external dso_local global %"class.ad::Vec4", align 8

; Function Attrs: mustprogress uwtable
declare dso_local noundef double @_ZNK2ad4Vec47Length3Ev(ptr noundef nonnull align 8 dereferenceable(32)) #0 align 2

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

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

; Function Attrs: mustprogress uwtable
define dso_local noundef double @_ZN2ad4Vec414Normalize3SafeEd(ptr noundef nonnull align 8 dereferenceable(32) %0, double noundef %1) #0 align 2 {
  %3 = alloca double, align 8
  %4 = alloca ptr, align 8
  %5 = alloca double, align 8
  %6 = alloca double, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store double %1, ptr %5, align 8, !tbaa !9
  %8 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %9 = call noundef double @_ZNK2ad4Vec47Length3Ev(ptr noundef nonnull align 8 dereferenceable(32) %8)
  store double %9, ptr %6, align 8, !tbaa !9
  %10 = load double, ptr %6, align 8, !tbaa !9
  %11 = load double, ptr %5, align 8, !tbaa !9
  %12 = fcmp olt double %10, %11
  br i1 %12, label %13, label %20

13:                                               ; preds = %2
  %14 = load double, ptr @_ZN2ad4Vec47m_UnitXE, align 8, !tbaa !11
  %15 = getelementptr inbounds %"class.ad::Vec4", ptr %8, i32 0, i32 0
  store double %14, ptr %15, align 8, !tbaa !11
  %16 = load double, ptr getelementptr inbounds (%"class.ad::Vec4", ptr @_ZN2ad4Vec47m_UnitXE, i32 0, i32 1), align 8, !tbaa !13
  %17 = getelementptr inbounds %"class.ad::Vec4", ptr %8, i32 0, i32 1
  store double %16, ptr %17, align 8, !tbaa !13
  %18 = load double, ptr getelementptr inbounds (%"class.ad::Vec4", ptr @_ZN2ad4Vec47m_UnitXE, i32 0, i32 2), align 8, !tbaa !14
  %19 = getelementptr inbounds %"class.ad::Vec4", ptr %8, i32 0, i32 2
  store double %18, ptr %19, align 8, !tbaa !14
  store double 0.000000e+00, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %34

20:                                               ; preds = %2
  %21 = load double, ptr %6, align 8, !tbaa !9
  %22 = getelementptr inbounds %"class.ad::Vec4", ptr %8, i32 0, i32 0
  %23 = load double, ptr %22, align 8, !tbaa !11
  %24 = fdiv double %23, %21
  store double %24, ptr %22, align 8, !tbaa !11
  %25 = load double, ptr %6, align 8, !tbaa !9
  %26 = getelementptr inbounds %"class.ad::Vec4", ptr %8, i32 0, i32 1
  %27 = load double, ptr %26, align 8, !tbaa !13
  %28 = fdiv double %27, %25
  store double %28, ptr %26, align 8, !tbaa !13
  %29 = load double, ptr %6, align 8, !tbaa !9
  %30 = getelementptr inbounds %"class.ad::Vec4", ptr %8, i32 0, i32 2
  %31 = load double, ptr %30, align 8, !tbaa !14
  %32 = fdiv double %31, %29
  store double %32, ptr %30, align 8, !tbaa !14
  %33 = load double, ptr %6, align 8, !tbaa !9
  store double %33, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %34

34:                                               ; preds = %20, %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %35 = load double, ptr %3, align 8
  ret double %35
}

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 }

!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 = !{!10, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_ZTSN2ad4Vec4E", !10, i64 0, !10, i64 8, !10, i64 16, !10, i64 24}
!13 = !{!12, !10, i64 8}
!14 = !{!12, !10, i64 16}


; 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.ad::Vec4" = type { double, double, double, double }

@_ZN2ad4Vec47m_UnitXE = external dso_local local_unnamed_addr global %"class.ad::Vec4", align 8

; Function Attrs: mustprogress uwtable
declare dso_local noundef double @_ZNK2ad4Vec47Length3Ev(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef double @_ZN2ad4Vec414Normalize3SafeEd(ptr noundef nonnull align 8 dereferenceable(32) %0, double noundef %1) local_unnamed_addr #0 align 2 {
  %3 = tail call noundef double @_ZNK2ad4Vec47Length3Ev(ptr noundef nonnull align 8 dereferenceable(32) %0)
  %4 = fcmp olt double %3, %1
  br i1 %4, label %5, label %9

5:                                                ; preds = %2
  %6 = load <2 x double>, ptr @_ZN2ad4Vec47m_UnitXE, align 8, !tbaa !5
  store <2 x double> %6, ptr %0, align 8, !tbaa !5
  %7 = load double, ptr getelementptr inbounds (i8, ptr @_ZN2ad4Vec47m_UnitXE, i64 16), align 8, !tbaa !9
  %8 = getelementptr inbounds i8, ptr %0, i64 16
  store double %7, ptr %8, align 8, !tbaa !9
  br label %17

9:                                                ; preds = %2
  %10 = load <2 x double>, ptr %0, align 8, !tbaa !5
  %11 = insertelement <2 x double> poison, double %3, i64 0
  %12 = shufflevector <2 x double> %11, <2 x double> poison, <2 x i32> zeroinitializer
  %13 = fdiv <2 x double> %10, %12
  store <2 x double> %13, ptr %0, align 8, !tbaa !5
  %14 = getelementptr inbounds i8, ptr %0, i64 16
  %15 = load double, ptr %14, align 8, !tbaa !9
  %16 = fdiv double %15, %3
  store double %16, ptr %14, align 8, !tbaa !9
  br label %17

17:                                               ; preds = %9, %5
  %.0 = phi double [ 0.000000e+00, %5 ], [ %3, %9 ]
  ret double %.0
}

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" }

!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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 16}
!10 = !{!"_ZTSN2ad4Vec4E", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SLPVectorizerPass,SROAPass,SimplifyCFGPass,TailCallElimPass