; LLVM IR from csviragh/robotsim :: src/utilities (math_utils)

; 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"

@IntersectionOfLineAndPolygon2D.TempVect1 = external hidden global [3 x double], align 16
@IntersectionOfLineAndPolygon2D.TempVect2 = external hidden global [3 x double], align 16

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local void @FillVect(ptr noundef, double noundef, double noundef, double noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @IntersectionOfLineAndPolygon2D(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, ptr noundef %4, i32 noundef %5) #1 {
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !5
  store ptr %2, ptr %9, align 8, !tbaa !5
  store ptr %3, ptr %10, align 8, !tbaa !5
  store ptr %4, ptr %11, align 8, !tbaa !5
  store i32 %5, ptr %12, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #2
  store i32 0, ptr %13, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %49, %6
  %15 = load i32, ptr %13, align 4, !tbaa !9
  %16 = load i32, ptr %12, align 4, !tbaa !9
  %17 = mul nsw i32 %16, 2
  %18 = icmp slt i32 %15, %17
  br i1 %18, label %19, label %52

19:                                               ; preds = %14
  %20 = load ptr, ptr %11, align 8, !tbaa !5
  %21 = load i32, ptr %13, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds double, ptr %20, i64 %22
  %24 = load double, ptr %23, align 8, !tbaa !11
  %25 = load ptr, ptr %11, align 8, !tbaa !5
  %26 = load i32, ptr %13, align 4, !tbaa !9
  %27 = add nsw i32 %26, 1
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds double, ptr %25, i64 %28
  %30 = load double, ptr %29, align 8, !tbaa !11
  call void @FillVect(ptr noundef @IntersectionOfLineAndPolygon2D.TempVect1, double noundef %24, double noundef %30, double noundef 0.000000e+00)
  %31 = load ptr, ptr %11, align 8, !tbaa !5
  %32 = load i32, ptr %13, align 4, !tbaa !9
  %33 = add nsw i32 %32, 2
  %34 = load i32, ptr %12, align 4, !tbaa !9
  %35 = mul nsw i32 2, %34
  %36 = srem i32 %33, %35
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds double, ptr %31, i64 %37
  %39 = load double, ptr %38, align 8, !tbaa !11
  %40 = load ptr, ptr %11, align 8, !tbaa !5
  %41 = load i32, ptr %13, align 4, !tbaa !9
  %42 = add nsw i32 %41, 4
  %43 = load i32, ptr %12, align 4, !tbaa !9
  %44 = mul nsw i32 2, %43
  %45 = srem i32 %42, %44
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds double, ptr %40, i64 %46
  %48 = load double, ptr %47, align 8, !tbaa !11
  call void @FillVect(ptr noundef @IntersectionOfLineAndPolygon2D.TempVect2, double noundef %39, double noundef %48, double noundef 0.000000e+00)
  br label %49

49:                                               ; preds = %19
  %50 = load i32, ptr %13, align 4, !tbaa !9
  %51 = add nsw i32 %50, 2
  store i32 %51, ptr %13, align 4, !tbaa !9
  br label %14, !llvm.loop !13

52:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #2
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !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"

@IntersectionOfLineAndPolygon2D.TempVect1 = external hidden global [3 x double], align 16
@IntersectionOfLineAndPolygon2D.TempVect2 = external hidden global [3 x double], align 16

; Function Attrs: nounwind uwtable
declare dso_local void @FillVect(ptr noundef, double noundef, double noundef, double noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @IntersectionOfLineAndPolygon2D(ptr nocapture noundef readnone %0, ptr nocapture noundef readnone %1, ptr nocapture noundef readnone %2, ptr nocapture noundef readnone %3, ptr nocapture noundef readonly %4, i32 noundef %5) local_unnamed_addr #0 {
  %7 = shl nsw i32 %5, 1
  %8 = icmp sgt i32 %5, 0
  br i1 %8, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %6
  %9 = zext nneg i32 %7 to i64
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %10 = getelementptr inbounds double, ptr %4, i64 %indvars.iv
  %11 = load double, ptr %10, align 8, !tbaa !5
  %12 = or disjoint i64 %indvars.iv, 1
  %13 = getelementptr inbounds double, ptr %4, i64 %12
  %14 = load double, ptr %13, align 8, !tbaa !5
  tail call void @FillVect(ptr noundef nonnull @IntersectionOfLineAndPolygon2D.TempVect1, double noundef %11, double noundef %14, double noundef 0.000000e+00)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 2
  %15 = trunc nuw nsw i64 %indvars.iv.next to i32
  %16 = urem i32 %15, %7
  %17 = zext nneg i32 %16 to i64
  %18 = getelementptr inbounds double, ptr %4, i64 %17
  %19 = load double, ptr %18, align 8, !tbaa !5
  %20 = trunc i64 %indvars.iv to i32
  %21 = add i32 %20, 4
  %22 = urem i32 %21, %7
  %23 = zext nneg i32 %22 to i64
  %24 = getelementptr inbounds double, ptr %4, i64 %23
  %25 = load double, ptr %24, align 8, !tbaa !5
  tail call void @FillVect(ptr noundef nonnull @IntersectionOfLineAndPolygon2D.TempVect2, double noundef %19, double noundef %25, double noundef 0.000000e+00)
  %26 = icmp ult i64 %indvars.iv.next, %9
  br i1 %26, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %6
  ret void
}

attributes #0 = { 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 = !{!6, !6, i64 0}
!6 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass