; LLVM IR from AlgoGenesis/C :: Greedy Algorithms/Ramer-Douglas-Peucker AlgorithmRamer-Douglas-Peucker Algorithm (simplify)

; 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.Point = type { double, double }

@.str = external hidden unnamed_addr constant [20 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [24 x i8], align 1

; 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 @ramerDouglasPeucker(ptr noundef, i32 noundef, i32 noundef, double noundef, ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @simplify(ptr noundef %0, i32 noundef %1, double noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca double, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store double %2, ptr %6, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = sext i32 %10 to i64
  %12 = mul i64 %11, 4
  %13 = call noalias ptr @malloc(i64 noundef %12) #6
  store ptr %13, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  store i32 0, ptr %8, align 4, !tbaa !9
  %14 = load ptr, ptr %7, align 8, !tbaa !5
  %15 = load i32, ptr %8, align 4, !tbaa !9
  %16 = add nsw i32 %15, 1
  store i32 %16, ptr %8, align 4, !tbaa !9
  %17 = sext i32 %15 to i64
  %18 = getelementptr inbounds i32, ptr %14, i64 %17
  store i32 0, ptr %18, align 4, !tbaa !9
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = sub nsw i32 %20, 1
  %22 = load double, ptr %6, align 8, !tbaa !11
  %23 = load ptr, ptr %7, align 8, !tbaa !5
  call void @ramerDouglasPeucker(ptr noundef %19, i32 noundef 0, i32 noundef %21, double noundef %22, ptr noundef %23, ptr noundef %8)
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = sub nsw i32 %24, 1
  %26 = load ptr, ptr %7, align 8, !tbaa !5
  %27 = load i32, ptr %8, align 4, !tbaa !9
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %8, align 4, !tbaa !9
  %29 = sext i32 %27 to i64
  %30 = getelementptr inbounds i32, ptr %26, i64 %29
  store i32 %25, ptr %30, align 4, !tbaa !9
  %31 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %32

32:                                               ; preds = %64, %3
  %33 = load i32, ptr %9, align 4, !tbaa !9
  %34 = load i32, ptr %8, align 4, !tbaa !9
  %35 = icmp slt i32 %33, %34
  br i1 %35, label %37, label %36

36:                                               ; preds = %32
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  br label %67

37:                                               ; preds = %32
  %38 = load ptr, ptr %7, align 8, !tbaa !5
  %39 = load i32, ptr %9, align 4, !tbaa !9
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds i32, ptr %38, i64 %40
  %42 = load i32, ptr %41, align 4, !tbaa !9
  %43 = load ptr, ptr %4, align 8, !tbaa !5
  %44 = load ptr, ptr %7, align 8, !tbaa !5
  %45 = load i32, ptr %9, align 4, !tbaa !9
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds i32, ptr %44, i64 %46
  %48 = load i32, ptr %47, align 4, !tbaa !9
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds %struct.Point, ptr %43, i64 %49
  %51 = getelementptr inbounds %struct.Point, ptr %50, i32 0, i32 0
  %52 = load double, ptr %51, align 8, !tbaa !13
  %53 = load ptr, ptr %4, align 8, !tbaa !5
  %54 = load ptr, ptr %7, align 8, !tbaa !5
  %55 = load i32, ptr %9, align 4, !tbaa !9
  %56 = sext i32 %55 to i64
  %57 = getelementptr inbounds i32, ptr %54, i64 %56
  %58 = load i32, ptr %57, align 4, !tbaa !9
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds %struct.Point, ptr %53, i64 %59
  %61 = getelementptr inbounds %struct.Point, ptr %60, i32 0, i32 1
  %62 = load double, ptr %61, align 8, !tbaa !15
  %63 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %42, double noundef %52, double noundef %62)
  br label %64

64:                                               ; preds = %37
  %65 = load i32, ptr %9, align 4, !tbaa !9
  %66 = add nsw i32 %65, 1
  store i32 %66, ptr %9, align 4, !tbaa !9
  br label %32, !llvm.loop !16

67:                                               ; preds = %36
  %68 = load ptr, ptr %7, align 8, !tbaa !5
  call void @free(ptr noundef %68) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  ret void
}

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

declare i32 @printf(ptr noundef, ...) #3

; Function Attrs: nounwind
declare void @free(ptr noundef) #4

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 allocsize(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 #3 = { "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 "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 }
attributes #6 = { nounwind allocsize(0) }

!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 = !{!14, !12, i64 0}
!14 = !{!"", !12, i64 0, !12, i64 8}
!15 = !{!14, !12, i64 8}
!16 = distinct !{!16, !17}
!17 = !{!"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"

%struct.Point = type { double, double }

@.str = external hidden unnamed_addr constant [20 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [24 x i8], align 1

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

; Function Attrs: mustprogress 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 @ramerDouglasPeucker(ptr noundef, i32 noundef, i32 noundef, double noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @simplify(ptr noundef %0, i32 noundef %1, double noundef %2) local_unnamed_addr #1 {
  %4 = alloca i32, align 4
  %5 = sext i32 %1 to i64
  %6 = shl nsw i64 %5, 2
  %7 = tail call noalias ptr @malloc(i64 noundef %6) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #6
  store i32 1, ptr %4, align 4, !tbaa !5
  store i32 0, ptr %7, align 4, !tbaa !5
  %8 = add nsw i32 %1, -1
  call void @ramerDouglasPeucker(ptr noundef %0, i32 noundef 0, i32 noundef %8, double noundef %2, ptr noundef nonnull %7, ptr noundef nonnull %4)
  %9 = load i32, ptr %4, align 4, !tbaa !5
  %10 = add nsw i32 %9, 1
  store i32 %10, ptr %4, align 4, !tbaa !5
  %11 = sext i32 %9 to i64
  %12 = getelementptr inbounds i32, ptr %7, i64 %11
  store i32 %8, ptr %12, align 4, !tbaa !5
  %13 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = icmp sgt i32 %14, 0
  br i1 %15, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %3
  call void @free(ptr noundef nonnull %7) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  ret void

.lr.ph:                                           ; preds = %3, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %3 ]
  %16 = getelementptr inbounds i32, ptr %7, i64 %indvars.iv
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds %struct.Point, ptr %0, i64 %18
  %20 = load double, ptr %19, align 8, !tbaa !9
  %21 = getelementptr inbounds i8, ptr %19, i64 8
  %22 = load double, ptr %21, align 8, !tbaa !12
  %23 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %17, double noundef %20, double noundef %22)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %24 = load i32, ptr %4, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = icmp slt i64 %indvars.iv.next, %25
  br i1 %26, label %.lr.ph, label %._crit_edge, !llvm.loop !13
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #4

attributes #0 = { mustprogress 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 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 #3 = { nofree 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 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 allocsize(0) }
attributes #6 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"", !11, i64 0, !11, i64 8}
!11 = !{!"double", !7, i64 0}
!12 = !{!10, !11, i64 8}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


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