; LLVM IR from bohanwang/libpgo :: src/core/perlinNoise/perlinWind.ll (ZN3pgo11PerlinNoise10PerlinWindD2Ev)

; 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.pgo::PerlinNoise::PerlinWind" = type { ptr, double, [3 x double], [4 x ptr] }

@_ZTVN3pgo11PerlinNoise10PerlinWindE = external dso_local unnamed_addr constant { [4 x ptr] }, 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: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #1

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

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN3pgo11PerlinNoise10PerlinWindD2Ev(ptr noundef nonnull align 8 dereferenceable(72) %0) unnamed_addr #2 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  store ptr getelementptr inbounds inrange(-16, 16) ({ [4 x ptr] }, ptr @_ZTVN3pgo11PerlinNoise10PerlinWindE, i32 0, i32 0, i32 2), ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !11
  br label %5

5:                                                ; preds = %18, %1
  %6 = load i32, ptr %3, align 4, !tbaa !11
  %7 = icmp slt i32 %6, 4
  br i1 %7, label %9, label %8

8:                                                ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %21

9:                                                ; preds = %5
  %10 = getelementptr inbounds %"class.pgo::PerlinNoise::PerlinWind", ptr %4, i32 0, i32 3
  %11 = load i32, ptr %3, align 4, !tbaa !11
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [4 x ptr], ptr %10, i64 0, i64 %12
  %14 = load ptr, ptr %13, align 8, !tbaa !5
  %15 = icmp eq ptr %14, null
  br i1 %15, label %17, label %16

16:                                               ; preds = %9
  call void @_ZdlPvm(ptr noundef %14, i64 noundef 2496) #4
  br label %17

17:                                               ; preds = %16, %9
  br label %18

18:                                               ; preds = %17
  %19 = load i32, ptr %3, align 4, !tbaa !11
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %3, align 4, !tbaa !11
  br label %5, !llvm.loop !13

21:                                               ; preds = %8
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nobuiltin 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 #2 = { 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 #3 = { nounwind }
attributes #4 = { builtin 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 = !{!"vtable pointer", !8, 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"

@_ZTVN3pgo11PerlinNoise10PerlinWindE = external dso_local unnamed_addr constant { [4 x ptr] }, align 8

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN3pgo11PerlinNoise10PerlinWindD2Ev(ptr nocapture noundef nonnull align 8 dereferenceable(72) %0) unnamed_addr #1 align 2 {
  store ptr getelementptr inbounds inrange(-16, 16) (i8, ptr @_ZTVN3pgo11PerlinNoise10PerlinWindE, i64 16), ptr %0, align 8, !tbaa !5
  %2 = getelementptr inbounds i8, ptr %0, i64 40
  %3 = load ptr, ptr %2, align 8, !tbaa !8
  %4 = icmp eq ptr %3, null
  br i1 %4, label %6, label %5

5:                                                ; preds = %1
  tail call void @_ZdlPvm(ptr noundef nonnull %3, i64 noundef 2496) #2
  br label %6

6:                                                ; preds = %1, %5
  %7 = getelementptr inbounds i8, ptr %0, i64 48
  %8 = load ptr, ptr %7, align 8, !tbaa !8
  %9 = icmp eq ptr %8, null
  br i1 %9, label %11, label %10

10:                                               ; preds = %6
  tail call void @_ZdlPvm(ptr noundef nonnull %8, i64 noundef 2496) #2
  br label %11

11:                                               ; preds = %10, %6
  %12 = getelementptr inbounds i8, ptr %0, i64 56
  %13 = load ptr, ptr %12, align 8, !tbaa !8
  %14 = icmp eq ptr %13, null
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  tail call void @_ZdlPvm(ptr noundef nonnull %13, i64 noundef 2496) #2
  br label %16

16:                                               ; preds = %15, %11
  %17 = getelementptr inbounds i8, ptr %0, i64 64
  %18 = load ptr, ptr %17, align 8, !tbaa !8
  %19 = icmp eq ptr %18, null
  br i1 %19, label %21, label %20

20:                                               ; preds = %16
  tail call void @_ZdlPvm(ptr noundef nonnull %18, i64 noundef 2496) #2
  br label %21

21:                                               ; preds = %20, %16
  ret void
}

attributes #0 = { nobuiltin 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 #1 = { 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 #2 = { builtin 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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"any pointer", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LICMPass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass