; 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"

@UnitVect.Abs = external hidden global double, align 8

; 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 double @VectAbs(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local void @NullVect(ptr noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @UnitVect(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = call double @VectAbs(ptr noundef %6)
  store double %7, ptr @UnitVect.Abs, align 8, !tbaa !9
  %8 = load double, ptr @UnitVect.Abs, align 8, !tbaa !9
  %9 = fcmp olt double %8, 1.000000e-10
  br i1 %9, label %10, label %12

10:                                               ; preds = %2
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  call void @NullVect(ptr noundef %11, i32 noundef 3)
  br label %32

12:                                               ; preds = %2
  store i32 0, ptr %5, align 4, !tbaa !11
  br label %13

13:                                               ; preds = %28, %12
  %14 = load i32, ptr %5, align 4, !tbaa !11
  %15 = icmp slt i32 %14, 3
  br i1 %15, label %16, label %31

16:                                               ; preds = %13
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = load i32, ptr %5, align 4, !tbaa !11
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds double, ptr %17, i64 %19
  %21 = load double, ptr %20, align 8, !tbaa !9
  %22 = load double, ptr @UnitVect.Abs, align 8, !tbaa !9
  %23 = fdiv double %21, %22
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  %25 = load i32, ptr %5, align 4, !tbaa !11
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds double, ptr %24, i64 %26
  store double %23, ptr %27, align 8, !tbaa !9
  br label %28

28:                                               ; preds = %16
  %29 = load i32, ptr %5, align 4, !tbaa !11
  %30 = add nsw i32 %29, 1
  store i32 %30, ptr %5, align 4, !tbaa !11
  br label %13, !llvm.loop !13

31:                                               ; preds = %13
  br label %32

32:                                               ; preds = %31, %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #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 = !{!"double", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !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"

@UnitVect.Abs = external hidden local_unnamed_addr global double, align 8

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

; Function Attrs: nounwind uwtable
declare dso_local void @NullVect(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @UnitVect(ptr noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = tail call double @VectAbs(ptr noundef %1)
  store double %3, ptr @UnitVect.Abs, align 8, !tbaa !5
  %4 = fcmp olt double %3, 1.000000e-10
  br i1 %4, label %16, label %.preheader.preheader

.preheader.preheader:                             ; preds = %2
  %5 = load double, ptr %1, align 8, !tbaa !5
  %6 = fdiv double %5, %3
  store double %6, ptr %0, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %1, i64 8
  %8 = load double, ptr %7, align 8, !tbaa !5
  %9 = load double, ptr @UnitVect.Abs, align 8, !tbaa !5
  %10 = fdiv double %8, %9
  %11 = getelementptr inbounds i8, ptr %0, i64 8
  store double %10, ptr %11, align 8, !tbaa !5
  %12 = getelementptr inbounds i8, ptr %1, i64 16
  %13 = load double, ptr %12, align 8, !tbaa !5
  %14 = fdiv double %13, %9
  %15 = getelementptr inbounds i8, ptr %0, i64 16
  store double %14, ptr %15, align 8, !tbaa !5
  br label %.loopexit

16:                                               ; preds = %2
  tail call void @NullVect(ptr noundef %0, i32 noundef 3)
  br label %.loopexit

.loopexit:                                        ; preds = %.preheader.preheader, %16
  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"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,LoopSimplifyPass,SROAPass,SimplifyCFGPass,TailCallElimPass