; LLVM IR from ImChong/Practice_LeetCode_C :: F01_Common_Functions/src (common_linked_list_dummy)

; 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.DummyLinkedList = type { ptr, i32 }
%struct.ListNode = type { i32, ptr }

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(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: nounwind uwtable
define dso_local ptr @DLinkedList_GetValueIndexes(ptr noundef %0, i32 noundef %1, ptr noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.DummyLinkedList, ptr %11, i32 0, i32 1
  %13 = load i32, ptr %12, align 8, !tbaa !11
  %14 = sext i32 %13 to i64
  %15 = mul i64 4, %14
  %16 = call noalias ptr @malloc(i64 noundef %15) #4
  store ptr %16, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  store i32 0, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.DummyLinkedList, ptr %17, i32 0, i32 0
  %19 = load ptr, ptr %18, align 8, !tbaa !13
  store ptr %19, ptr %10, align 8, !tbaa !5
  br label %20

20:                                               ; preds = %36, %3
  %21 = load ptr, ptr %10, align 8, !tbaa !5
  %22 = icmp ne ptr %21, null
  br i1 %22, label %23, label %42

23:                                               ; preds = %20
  %24 = load ptr, ptr %10, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.ListNode, ptr %24, i32 0, i32 0
  %26 = load i32, ptr %25, align 8, !tbaa !14
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = icmp eq i32 %26, %27
  br i1 %28, label %29, label %36

29:                                               ; preds = %23
  %30 = load i32, ptr %8, align 4, !tbaa !9
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  %32 = load i32, ptr %9, align 4, !tbaa !9
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %9, align 4, !tbaa !9
  %34 = sext i32 %32 to i64
  %35 = getelementptr inbounds i32, ptr %31, i64 %34
  store i32 %30, ptr %35, align 4, !tbaa !9
  br label %36

36:                                               ; preds = %29, %23
  %37 = load ptr, ptr %10, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.ListNode, ptr %37, i32 0, i32 1
  %39 = load ptr, ptr %38, align 8, !tbaa !16
  store ptr %39, ptr %10, align 8, !tbaa !5
  %40 = load i32, ptr %8, align 4, !tbaa !9
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %8, align 4, !tbaa !9
  br label %20, !llvm.loop !17

42:                                               ; preds = %20
  %43 = load i32, ptr %9, align 4, !tbaa !9
  %44 = load ptr, ptr %6, align 8, !tbaa !5
  store i32 %43, ptr %44, align 4, !tbaa !9
  %45 = load ptr, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret ptr %45
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 }
attributes #4 = { 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, !10, i64 8}
!12 = !{!"", !6, i64 0, !10, i64 8}
!13 = !{!12, !6, i64 0}
!14 = !{!15, !10, i64 0}
!15 = !{!"ListNode", !10, i64 0, !6, i64 8}
!16 = !{!15, !6, i64 8}
!17 = distinct !{!17, !18}
!18 = !{!"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 nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind uwtable
define dso_local noalias noundef ptr @DLinkedList_GetValueIndexes(ptr nocapture noundef readonly %0, i32 noundef %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #1 {
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load i32, ptr %4, align 8, !tbaa !5
  %6 = sext i32 %5 to i64
  %7 = shl nsw i64 %6, 2
  %8 = tail call noalias ptr @malloc(i64 noundef %7) #2
  %.014 = load ptr, ptr %0, align 8, !tbaa !11
  %.not15 = icmp eq ptr %.014, null
  br i1 %.not15, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3, %15
  %.018 = phi ptr [ %.0, %15 ], [ %.014, %3 ]
  %.01217 = phi i32 [ %.1, %15 ], [ 0, %3 ]
  %.01316 = phi i32 [ %17, %15 ], [ 0, %3 ]
  %9 = load i32, ptr %.018, align 8, !tbaa !12
  %10 = icmp eq i32 %9, %1
  br i1 %10, label %11, label %15

11:                                               ; preds = %.lr.ph
  %12 = add nsw i32 %.01217, 1
  %13 = sext i32 %.01217 to i64
  %14 = getelementptr inbounds i32, ptr %8, i64 %13
  store i32 %.01316, ptr %14, align 4, !tbaa !14
  br label %15

15:                                               ; preds = %11, %.lr.ph
  %.1 = phi i32 [ %12, %11 ], [ %.01217, %.lr.ph ]
  %16 = getelementptr inbounds i8, ptr %.018, i64 8
  %17 = add nuw nsw i32 %.01316, 1
  %.0 = load ptr, ptr %16, align 8, !tbaa !11
  %.not = icmp eq ptr %.0, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !15

._crit_edge:                                      ; preds = %15, %3
  %.012.lcssa = phi i32 [ 0, %3 ], [ %.1, %15 ]
  store i32 %.012.lcssa, ptr %2, align 4, !tbaa !14
  ret ptr %8
}

attributes #0 = { 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 #1 = { nofree 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) }

!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, !10, i64 8}
!6 = !{!"", !7, i64 0, !10, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!7, !7, i64 0}
!12 = !{!13, !10, i64 0}
!13 = !{!"ListNode", !10, i64 0, !7, i64 8}
!14 = !{!10, !10, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


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