; LLVM IR from TobiasKozel/VAE :: external/portaudio/src/common (pa_allocation)

; 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.PaUtilAllocationGroup = type { i64, ptr, ptr, ptr }
%struct.PaUtilAllocationGroupLink = type { ptr, ptr }

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

declare void @PaUtil_FreeMemory(ptr 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: nounwind uwtable
define dso_local void @PaUtil_FreeAllAllocations(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  %6 = getelementptr inbounds %struct.PaUtilAllocationGroup, ptr %5, i32 0, i32 3
  %7 = load ptr, ptr %6, align 8, !tbaa !9
  store ptr %7, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store ptr null, ptr %4, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %11, %1
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %21

11:                                               ; preds = %8
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.PaUtilAllocationGroupLink, ptr %12, i32 0, i32 1
  %14 = load ptr, ptr %13, align 8, !tbaa !12
  call void @PaUtil_FreeMemory(ptr noundef %14)
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.PaUtilAllocationGroupLink, ptr %15, i32 0, i32 1
  store ptr null, ptr %16, align 8, !tbaa !12
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %17, ptr %4, align 8, !tbaa !5
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.PaUtilAllocationGroupLink, ptr %18, i32 0, i32 0
  %20 = load ptr, ptr %19, align 8, !tbaa !14
  store ptr %20, ptr %3, align 8, !tbaa !5
  br label %8, !llvm.loop !15

21:                                               ; preds = %8
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = icmp ne ptr %22, null
  br i1 %23, label %24, label %37

24:                                               ; preds = %21
  %25 = load ptr, ptr %2, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.PaUtilAllocationGroup, ptr %25, i32 0, i32 2
  %27 = load ptr, ptr %26, align 8, !tbaa !17
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.PaUtilAllocationGroupLink, ptr %28, i32 0, i32 0
  store ptr %27, ptr %29, align 8, !tbaa !14
  %30 = load ptr, ptr %2, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.PaUtilAllocationGroup, ptr %30, i32 0, i32 3
  %32 = load ptr, ptr %31, align 8, !tbaa !9
  %33 = load ptr, ptr %2, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.PaUtilAllocationGroup, ptr %33, i32 0, i32 2
  store ptr %32, ptr %34, align 8, !tbaa !17
  %35 = load ptr, ptr %2, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.PaUtilAllocationGroup, ptr %35, i32 0, i32 3
  store ptr null, ptr %36, align 8, !tbaa !9
  br label %37

37:                                               ; preds = %24, %21
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 }

!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, !6, i64 24}
!10 = !{!"", !11, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!11 = !{!"long", !7, i64 0}
!12 = !{!13, !6, i64 8}
!13 = !{!"PaUtilAllocationGroupLink", !6, i64 0, !6, i64 8}
!14 = !{!13, !6, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}
!17 = !{!10, !6, i64 16}


; 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"

declare void @PaUtil_FreeMemory(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @PaUtil_FreeAllAllocations(ptr nocapture noundef %0) local_unnamed_addr #1 {
  %2 = getelementptr inbounds i8, ptr %0, i64 24
  %.01214 = load ptr, ptr %2, align 8, !tbaa !5
  %.not15 = icmp eq ptr %.01214, null
  br i1 %.not15, label %._crit_edge.thread, label %.lr.ph

.lr.ph:                                           ; preds = %1, %.lr.ph
  %.01216 = phi ptr [ %.012, %.lr.ph ], [ %.01214, %1 ]
  %3 = getelementptr inbounds i8, ptr %.01216, i64 8
  %4 = load ptr, ptr %3, align 8, !tbaa !9
  tail call void @PaUtil_FreeMemory(ptr noundef %4) #2
  store ptr null, ptr %3, align 8, !tbaa !9
  %.012 = load ptr, ptr %.01216, align 8, !tbaa !5
  %.not = icmp eq ptr %.012, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  %6 = load ptr, ptr %5, align 8, !tbaa !13
  store ptr %6, ptr %.01216, align 8, !tbaa !16
  %7 = load ptr, ptr %2, align 8, !tbaa !17
  store ptr %7, ptr %5, align 8, !tbaa !13
  store ptr null, ptr %2, align 8, !tbaa !17
  br label %._crit_edge.thread

._crit_edge.thread:                               ; preds = %1, %._crit_edge
  ret void
}

attributes #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 = { 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, !6, i64 8}
!10 = !{!"PaUtilAllocationGroupLink", !6, i64 0, !6, i64 8}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!14, !6, i64 16}
!14 = !{!"", !15, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!15 = !{!"long", !7, i64 0}
!16 = !{!10, !6, i64 0}
!17 = !{!14, !6, i64 24}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass