; LLVM IR from atlantis13579/Riemann :: Src/Geometry/Polygon3.ll (ZN7Riemann13PolygonArea3DEPKN5Maths8TVector3IfEEi)

; 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.Maths::TVector3" = type { float, float, float }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef float @_ZN7Riemann14TriangleArea3DERKN5Maths8TVector3IfEES4_S4_(ptr noundef nonnull align 4 dereferenceable(12), ptr noundef nonnull align 4 dereferenceable(12), ptr noundef nonnull align 4 dereferenceable(12)) #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 nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef float @_ZN7Riemann13PolygonArea3DEPKN5Maths8TVector3IfEEi(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca float, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca float, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %8 = load i32, ptr %5, align 4, !tbaa !9
  %9 = icmp slt i32 %8, 3
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  store float 0.000000e+00, ptr %3, align 4
  br label %38

11:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store float 0.000000e+00, ptr %6, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 1, ptr %7, align 4, !tbaa !9
  br label %12

12:                                               ; preds = %33, %11
  %13 = load i32, ptr %7, align 4, !tbaa !9
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = sub nsw i32 %14, 1
  %16 = icmp slt i32 %13, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %36

18:                                               ; preds = %12
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %"class.Maths::TVector3", ptr %19, i64 0
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = load i32, ptr %7, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds %"class.Maths::TVector3", ptr %21, i64 %23
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = load i32, ptr %7, align 4, !tbaa !9
  %27 = add nsw i32 %26, 1
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds %"class.Maths::TVector3", ptr %25, i64 %28
  %30 = call noundef float @_ZN7Riemann14TriangleArea3DERKN5Maths8TVector3IfEES4_S4_(ptr noundef nonnull align 4 dereferenceable(12) %20, ptr noundef nonnull align 4 dereferenceable(12) %24, ptr noundef nonnull align 4 dereferenceable(12) %29)
  %31 = load float, ptr %6, align 4, !tbaa !11
  %32 = fadd float %31, %30
  store float %32, ptr %6, align 4, !tbaa !11
  br label %33

33:                                               ; preds = %18
  %34 = load i32, ptr %7, align 4, !tbaa !9
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %7, align 4, !tbaa !9
  br label %12, !llvm.loop !13

36:                                               ; preds = %17
  %37 = load float, ptr %6, align 4, !tbaa !11
  store float %37, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %38

38:                                               ; preds = %36, %10
  %39 = load float, ptr %3, align 4
  ret float %39
}

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 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 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"float", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; 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.Maths::TVector3" = type { float, float, float }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef float @_ZN7Riemann14TriangleArea3DERKN5Maths8TVector3IfEES4_S4_(ptr noundef nonnull align 4 dereferenceable(12), ptr noundef nonnull align 4 dereferenceable(12), ptr noundef nonnull align 4 dereferenceable(12)) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef float @_ZN7Riemann13PolygonArea3DEPKN5Maths8TVector3IfEEi(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp slt i32 %1, 3
  br i1 %3, label %.loopexit, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %4 = add nsw i32 %1, -1
  %wide.trip.count = zext nneg i32 %4 to i64
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv = phi i64 [ 1, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %.01114 = phi float [ 0.000000e+00, %.lr.ph.preheader ], [ %8, %.lr.ph ]
  %5 = getelementptr inbounds %"class.Maths::TVector3", ptr %0, i64 %indvars.iv
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %6 = getelementptr inbounds %"class.Maths::TVector3", ptr %0, i64 %indvars.iv.next
  %7 = tail call noundef float @_ZN7Riemann14TriangleArea3DERKN5Maths8TVector3IfEES4_S4_(ptr noundef nonnull align 4 dereferenceable(12) %0, ptr noundef nonnull align 4 dereferenceable(12) %5, ptr noundef nonnull align 4 dereferenceable(12) %6)
  %8 = fadd float %.01114, %7
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %.loopexit, label %.lr.ph, !llvm.loop !5

.loopexit:                                        ; preds = %.lr.ph, %2
  %.012 = phi float [ 0.000000e+00, %2 ], [ %8, %.lr.ph ]
  ret float %.012
}

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)"}
!5 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass