; LLVM IR from kdrag0n/fxdsp :: external/oboe/apps/OboeTester/app/src/main/cpp/flowunits/SawtoothOscillator._fe0a2a1b (ZN18SawtoothOscillator9onProcessEi)

; 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.OscillatorBase = type <{ %"class.oboe::flowgraph::FlowGraphNode", %"class.oboe::flowgraph::FlowGraphPortFloatInput", %"class.oboe::flowgraph::FlowGraphPortFloatInput", %"class.oboe::flowgraph::FlowGraphPortFloatOutput", float, float, float, [4 x i8] }>
%"class.oboe::flowgraph::FlowGraphNode" = type { ptr, i64, %"class.std::vector", i8, i8, i32 }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::reference_wrapper<oboe::flowgraph::FlowGraphPort>, std::allocator<std::reference_wrapper<oboe::flowgraph::FlowGraphPort>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::reference_wrapper<oboe::flowgraph::FlowGraphPort>, std::allocator<std::reference_wrapper<oboe::flowgraph::FlowGraphPort>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::reference_wrapper<oboe::flowgraph::FlowGraphPort>, std::allocator<std::reference_wrapper<oboe::flowgraph::FlowGraphPort>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::reference_wrapper<oboe::flowgraph::FlowGraphPort>, std::allocator<std::reference_wrapper<oboe::flowgraph::FlowGraphPort>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.oboe::flowgraph::FlowGraphPortFloatInput" = type { %"class.oboe::flowgraph::FlowGraphPortFloat", ptr }
%"class.oboe::flowgraph::FlowGraphPortFloat" = type { %"class.oboe::flowgraph::FlowGraphPort.base", i32, %"class.std::unique_ptr" }
%"class.oboe::flowgraph::FlowGraphPort.base" = type <{ ptr, ptr, i32 }>
%"class.std::unique_ptr" = type { %"struct.std::__uniq_ptr_data" }
%"struct.std::__uniq_ptr_data" = type { %"class.std::__uniq_ptr_impl" }
%"class.std::__uniq_ptr_impl" = type { %"class.std::tuple" }
%"class.std::tuple" = type { %"struct.std::_Tuple_impl" }
%"struct.std::_Tuple_impl" = type { %"struct.std::_Head_base.1" }
%"struct.std::_Head_base.1" = type { ptr }
%"class.oboe::flowgraph::FlowGraphPortFloatOutput" = type { %"class.oboe::flowgraph::FlowGraphPortFloat" }

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN18SawtoothOscillator9onProcessEi(ptr noundef nonnull align 8 dereferenceable(172) %0, i32 noundef %1) unnamed_addr #0 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca float, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %10 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %11 = getelementptr inbounds %class.OscillatorBase, ptr %10, i32 0, i32 1
  %12 = call noundef ptr @_ZN4oboe9flowgraph23FlowGraphPortFloatInput9getBufferEv(ptr noundef nonnull align 8 dereferenceable(40) %11)
  store ptr %12, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %13 = getelementptr inbounds %class.OscillatorBase, ptr %10, i32 0, i32 2
  %14 = call noundef ptr @_ZN4oboe9flowgraph23FlowGraphPortFloatInput9getBufferEv(ptr noundef nonnull align 8 dereferenceable(40) %13)
  store ptr %14, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %15 = getelementptr inbounds %class.OscillatorBase, ptr %10, i32 0, i32 3
  %16 = call noundef ptr @_ZN4oboe9flowgraph18FlowGraphPortFloat9getBufferEv(ptr noundef nonnull align 8 dereferenceable(32) %15)
  store ptr %16, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %17

17:                                               ; preds = %38, %2
  %18 = load i32, ptr %8, align 4, !tbaa !9
  %19 = load i32, ptr %4, align 4, !tbaa !9
  %20 = icmp slt i32 %18, %19
  br i1 %20, label %22, label %21

21:                                               ; preds = %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %41

22:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = load i32, ptr %8, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds float, ptr %23, i64 %25
  %27 = load float, ptr %26, align 4, !tbaa !11
  %28 = call noundef float @_ZN14OscillatorBase14incrementPhaseEf(ptr noundef nonnull align 8 dereferenceable(172) %10, float noundef %27)
  store float %28, ptr %9, align 4, !tbaa !11
  %29 = load float, ptr %9, align 4, !tbaa !11
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  %31 = load i32, ptr %8, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds float, ptr %30, i64 %32
  %34 = load float, ptr %33, align 4, !tbaa !11
  %35 = fmul float %29, %34
  %36 = load ptr, ptr %7, align 8, !tbaa !5
  %37 = getelementptr inbounds float, ptr %36, i32 1
  store ptr %37, ptr %7, align 8, !tbaa !5
  store float %35, ptr %36, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  br label %38

38:                                               ; preds = %22
  %39 = load i32, ptr %8, align 4, !tbaa !9
  %40 = add nsw i32 %39, 1
  store i32 %40, ptr %8, align 4, !tbaa !9
  br label %17, !llvm.loop !13

41:                                               ; preds = %21
  %42 = load i32, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  ret i32 %42
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare noundef ptr @_ZN4oboe9flowgraph23FlowGraphPortFloatInput9getBufferEv(ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN4oboe9flowgraph18FlowGraphPortFloat9getBufferEv(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef float @_ZN14OscillatorBase14incrementPhaseEf(ptr noundef nonnull align 8 dereferenceable(172), float noundef) #3 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { mustprogress 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 = { "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 = { 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 #4 = { 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"

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN18SawtoothOscillator9onProcessEi(ptr noundef nonnull align 8 dereferenceable(172) %0, i32 noundef returned %1) unnamed_addr #0 align 2 {
  %3 = getelementptr inbounds i8, ptr %0, i64 48
  %4 = tail call noundef ptr @_ZN4oboe9flowgraph23FlowGraphPortFloatInput9getBufferEv(ptr noundef nonnull align 8 dereferenceable(40) %3)
  %5 = getelementptr inbounds i8, ptr %0, i64 88
  %6 = tail call noundef ptr @_ZN4oboe9flowgraph23FlowGraphPortFloatInput9getBufferEv(ptr noundef nonnull align 8 dereferenceable(40) %5)
  %7 = getelementptr inbounds i8, ptr %0, i64 128
  %8 = tail call noundef ptr @_ZN4oboe9flowgraph18FlowGraphPortFloat9getBufferEv(ptr noundef nonnull align 8 dereferenceable(32) %7)
  %9 = icmp sgt i32 %1, 0
  br i1 %9, label %.lr.ph.preheader, label %._crit_edge

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

._crit_edge:                                      ; preds = %.lr.ph, %2
  ret i32 %1

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %.013 = phi ptr [ %8, %.lr.ph.preheader ], [ %16, %.lr.ph ]
  %10 = getelementptr inbounds float, ptr %4, i64 %indvars.iv
  %11 = load float, ptr %10, align 4, !tbaa !5
  %12 = tail call noundef float @_ZN14OscillatorBase14incrementPhaseEf(ptr noundef nonnull align 8 dereferenceable(172) %0, float noundef %11)
  %13 = getelementptr inbounds float, ptr %6, i64 %indvars.iv
  %14 = load float, ptr %13, align 4, !tbaa !5
  %15 = fmul float %12, %14
  %16 = getelementptr inbounds i8, ptr %.013, i64 4
  store float %15, ptr %.013, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9
}

declare noundef ptr @_ZN4oboe9flowgraph23FlowGraphPortFloatInput9getBufferEv(ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN4oboe9flowgraph18FlowGraphPortFloat9getBufferEv(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef float @_ZN14OscillatorBase14incrementPhaseEf(ptr noundef nonnull align 8 dereferenceable(172), float noundef) local_unnamed_addr #2 align 2

attributes #0 = { mustprogress 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 = { "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" }

!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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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