; LLVM IR from epicf/ef :: vec3d.ll (Z16vec3d_normalized5Vec3d)

; 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.Vec3d = type { [3 x double] }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z10vec3d_zerov(ptr dead_on_unwind noalias writable sret(%struct.Vec3d) align 8) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef double @_Z12vec3d_length5Vec3d(ptr noundef byval(%struct.Vec3d) align 8) #0

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z18vec3d_times_scalar5Vec3dd(ptr dead_on_unwind noalias writable sret(%struct.Vec3d) align 8, ptr noundef byval(%struct.Vec3d) align 8, double noundef) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z16vec3d_normalized5Vec3d(ptr dead_on_unwind noalias writable sret(%struct.Vec3d) align 8 %0, ptr noundef byval(%struct.Vec3d) align 8 %1) #0 {
  %3 = alloca double, align 8
  %4 = alloca %struct.Vec3d, align 8
  %5 = alloca %struct.Vec3d, align 8
  %6 = alloca %struct.Vec3d, align 8
  %7 = alloca %struct.Vec3d, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %4, ptr align 8 %1, i64 24, i1 false), !tbaa.struct !5
  %8 = call noundef double @_Z12vec3d_length5Vec3d(ptr noundef byval(%struct.Vec3d) align 8 %4)
  store double %8, ptr %3, align 8, !tbaa !9
  %9 = load double, ptr %3, align 8, !tbaa !9
  %10 = fcmp une double %9, 0.000000e+00
  br i1 %10, label %11, label %14

11:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 24, ptr %5) #3
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %6, ptr align 8 %1, i64 24, i1 false), !tbaa.struct !5
  %12 = load double, ptr %3, align 8, !tbaa !9
  %13 = fdiv double 1.000000e+00, %12
  call void @_Z18vec3d_times_scalar5Vec3dd(ptr dead_on_unwind writable sret(%struct.Vec3d) align 8 %5, ptr noundef byval(%struct.Vec3d) align 8 %6, double noundef %13)
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %0, ptr align 8 %5, i64 24, i1 false), !tbaa.struct !5
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #3
  br label %15

14:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 24, ptr %7) #3
  call void @_Z10vec3d_zerov(ptr dead_on_unwind writable sret(%struct.Vec3d) align 8 %7)
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %0, ptr align 8 %7, i64 24, i1 false), !tbaa.struct !5
  call void @llvm.lifetime.end.p0(i64 24, ptr %7) #3
  br label %15

15:                                               ; preds = %14, %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret void
}

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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 24, !6}
!6 = !{!7, !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"double", !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.Vec3d = type { [3 x double] }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z10vec3d_zerov(ptr dead_on_unwind noalias writable sret(%struct.Vec3d) align 8) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef double @_Z12vec3d_length5Vec3d(ptr noundef byval(%struct.Vec3d) align 8) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z18vec3d_times_scalar5Vec3dd(ptr dead_on_unwind noalias writable sret(%struct.Vec3d) align 8, ptr noundef byval(%struct.Vec3d) align 8, double noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z16vec3d_normalized5Vec3d(ptr dead_on_unwind noalias nocapture writable writeonly sret(%struct.Vec3d) align 8 %0, ptr nocapture noundef readonly byval(%struct.Vec3d) align 8 %1) local_unnamed_addr #0 {
  %3 = tail call noundef double @_Z12vec3d_length5Vec3d(ptr noundef nonnull byval(%struct.Vec3d) align 8 %1)
  %4 = fcmp une double %3, 0.000000e+00
  br i1 %4, label %5, label %7

5:                                                ; preds = %2
  %6 = fdiv double 1.000000e+00, %3
  tail call void @_Z18vec3d_times_scalar5Vec3dd(ptr dead_on_unwind nonnull writable sret(%struct.Vec3d) align 8 %0, ptr noundef nonnull byval(%struct.Vec3d) align 8 %1, double noundef %6)
  br label %8

7:                                                ; preds = %2
  tail call void @_Z10vec3d_zerov(ptr dead_on_unwind nonnull writable sret(%struct.Vec3d) align 8 %0)
  br label %8

8:                                                ; preds = %7, %5
  ret void
}

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" }

!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)"}


; Effective O3 passes: DSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass