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

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @LinkedList_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
  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
  %10 = call noalias ptr @malloc(i64 noundef 4000) #4
  store ptr %10, 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
  br label %11

11:                                               ; preds = %27, %3
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = icmp ne ptr %12, null
  br i1 %13, label %14, label %33

14:                                               ; preds = %11
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.ListNode, ptr %15, i32 0, i32 0
  %17 = load i32, ptr %16, align 8, !tbaa !11
  %18 = load i32, ptr %5, align 4, !tbaa !9
  %19 = icmp eq i32 %17, %18
  br i1 %19, label %20, label %27

20:                                               ; preds = %14
  %21 = load i32, ptr %8, align 4, !tbaa !9
  %22 = load ptr, ptr %7, align 8, !tbaa !5
  %23 = load i32, ptr %9, align 4, !tbaa !9
  %24 = add nsw i32 %23, 1
  store i32 %24, ptr %9, align 4, !tbaa !9
  %25 = sext i32 %23 to i64
  %26 = getelementptr inbounds i32, ptr %22, i64 %25
  store i32 %21, ptr %26, align 4, !tbaa !9
  br label %27

27:                                               ; preds = %20, %14
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.ListNode, ptr %28, i32 0, i32 1
  %30 = load ptr, ptr %29, align 8, !tbaa !13
  store ptr %30, ptr %4, align 8, !tbaa !5
  %31 = load i32, ptr %8, align 4, !tbaa !9
  %32 = add nsw i32 %31, 1
  store i32 %32, ptr %8, align 4, !tbaa !9
  br label %11, !llvm.loop !14

33:                                               ; preds = %11
  %34 = load i32, ptr %9, align 4, !tbaa !9
  %35 = load ptr, ptr %6, align 8, !tbaa !5
  store i32 %34, ptr %35, align 4, !tbaa !9
  %36 = load ptr, ptr %7, align 8, !tbaa !5
  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 %36
}

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 0}
!12 = !{!"ListNode", !10, i64 0, !6, i64 8}
!13 = !{!12, !6, i64 8}
!14 = distinct !{!14, !15}
!15 = !{!"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 @LinkedList_GetValueIndexes(ptr noundef readonly %0, i32 noundef %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #1 {
  %4 = tail call noalias dereferenceable_or_null(4000) ptr @malloc(i64 noundef 4000) #2
  %.not12 = icmp eq ptr %0, null
  br i1 %.not12, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3, %11
  %.015 = phi i32 [ %.1, %11 ], [ 0, %3 ]
  %.01014 = phi i32 [ %14, %11 ], [ 0, %3 ]
  %.01113 = phi ptr [ %13, %11 ], [ %0, %3 ]
  %5 = load i32, ptr %.01113, align 8, !tbaa !5
  %6 = icmp eq i32 %5, %1
  br i1 %6, label %7, label %11

7:                                                ; preds = %.lr.ph
  %8 = add nsw i32 %.015, 1
  %9 = sext i32 %.015 to i64
  %10 = getelementptr inbounds i32, ptr %4, i64 %9
  store i32 %.01014, ptr %10, align 4, !tbaa !11
  br label %11

11:                                               ; preds = %7, %.lr.ph
  %.1 = phi i32 [ %8, %7 ], [ %.015, %.lr.ph ]
  %12 = getelementptr inbounds i8, ptr %.01113, i64 8
  %13 = load ptr, ptr %12, align 8, !tbaa !12
  %14 = add nuw nsw i32 %.01014, 1
  %.not = icmp eq ptr %13, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %11, %3
  %.0.lcssa = phi i32 [ 0, %3 ], [ %.1, %11 ]
  store i32 %.0.lcssa, ptr %2, align 4, !tbaa !11
  ret ptr %4
}

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


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