; LLVM IR from heroseh/cgm :: cgm (CgmVec2_norm)

; 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"

%union.CgmVec2 = type { %struct.anon }
%struct.anon = type { float, float }

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #0

; 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

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

; Function Attrs: nounwind
declare float @sqrtf(float noundef) #3

; Function Attrs: nounwind uwtable
define dso_local <2 x float> @CgmVec2_norm(<2 x float> %0) #4 {
  %2 = alloca %union.CgmVec2, align 4
  %3 = alloca %union.CgmVec2, align 4
  %4 = alloca float, align 4
  %5 = getelementptr inbounds %union.CgmVec2, ptr %3, i32 0, i32 0
  store <2 x float> %0, ptr %5, align 4
  %6 = getelementptr inbounds %struct.anon, ptr %3, i32 0, i32 0
  %7 = load float, ptr %6, align 4, !tbaa !5
  %8 = fcmp oeq float %7, 0.000000e+00
  br i1 %8, label %9, label %14

9:                                                ; preds = %1
  %10 = getelementptr inbounds %struct.anon, ptr %3, i32 0, i32 1
  %11 = load float, ptr %10, align 4, !tbaa !5
  %12 = fcmp oeq float %11, 0.000000e+00
  br i1 %12, label %13, label %14

13:                                               ; preds = %9
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %2, ptr align 4 %3, i64 8, i1 false), !tbaa.struct !8
  br label %39

14:                                               ; preds = %9, %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  %15 = getelementptr inbounds %struct.anon, ptr %3, i32 0, i32 0
  %16 = load float, ptr %15, align 4, !tbaa !5
  %17 = getelementptr inbounds %struct.anon, ptr %3, i32 0, i32 0
  %18 = load float, ptr %17, align 4, !tbaa !5
  %19 = getelementptr inbounds %struct.anon, ptr %3, i32 0, i32 1
  %20 = load float, ptr %19, align 4, !tbaa !5
  %21 = getelementptr inbounds %struct.anon, ptr %3, i32 0, i32 1
  %22 = load float, ptr %21, align 4, !tbaa !5
  %23 = fmul float %20, %22
  %24 = call float @llvm.fmuladd.f32(float %16, float %18, float %23)
  %25 = call float @sqrtf(float noundef %24) #5
  %26 = fpext float %25 to double
  %27 = fdiv double 1.000000e+00, %26
  %28 = fptrunc double %27 to float
  store float %28, ptr %4, align 4, !tbaa !9
  %29 = getelementptr inbounds %struct.anon, ptr %2, i32 0, i32 0
  %30 = getelementptr inbounds %struct.anon, ptr %3, i32 0, i32 0
  %31 = load float, ptr %30, align 4, !tbaa !5
  %32 = load float, ptr %4, align 4, !tbaa !9
  %33 = fmul float %31, %32
  store float %33, ptr %29, align 4, !tbaa !11
  %34 = getelementptr inbounds %struct.anon, ptr %2, i32 0, i32 1
  %35 = getelementptr inbounds %struct.anon, ptr %3, i32 0, i32 1
  %36 = load float, ptr %35, align 4, !tbaa !5
  %37 = load float, ptr %4, align 4, !tbaa !9
  %38 = fmul float %36, %37
  store float %38, ptr %34, align 4, !tbaa !13
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  br label %39

39:                                               ; preds = %14, %13
  %40 = getelementptr inbounds %union.CgmVec2, ptr %2, i32 0, i32 0
  %41 = load <2 x float>, ptr %40, align 4
  ret <2 x float> %41
}

attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree 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 = { 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 #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/C++ TBAA"}
!8 = !{i64 0, i64 8, !5}
!9 = !{!10, !10, i64 0}
!10 = !{!"float", !6, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"", !10, i64 0, !10, i64 4}
!13 = !{!12, !10, i64 4}


; 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"

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #0

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local <2 x float> @CgmVec2_norm(<2 x float> %0) local_unnamed_addr #1 {
  %2 = extractelement <2 x float> %0, i64 1
  %3 = extractelement <2 x float> %0, i64 0
  %4 = fcmp oeq float %3, 0.000000e+00
  %5 = fcmp oeq float %2, 0.000000e+00
  %or.cond = select i1 %4, i1 %5, i1 false
  br i1 %or.cond, label %13, label %6

6:                                                ; preds = %1
  %7 = fmul float %2, %2
  %8 = tail call float @llvm.fmuladd.f32(float %3, float %3, float %7)
  %sqrt = tail call float @llvm.sqrt.f32(float %8)
  %9 = fdiv float 1.000000e+00, %sqrt
  %10 = insertelement <2 x float> poison, float %9, i64 0
  %11 = shufflevector <2 x float> %10, <2 x float> poison, <2 x i32> zeroinitializer
  %12 = fmul <2 x float> %11, %0
  br label %13

13:                                               ; preds = %1, %6
  %.sroa.016.0 = phi <2 x float> [ %12, %6 ], [ %0, %1 ]
  ret <2 x float> %.sroa.016.0
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.sqrt.f32(float) #2

attributes #0 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) 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 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)"}


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