; LLVM IR from JessonYue/LeetCodeLearning :: Array/wuchao/tree/7-18 堆的c实现 (Heap)

; 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.Heap = type { ptr, i32, i32, i32 }

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

19:                                               ; preds = %38, %1
  %20 = load i32, ptr %5, align 4, !tbaa !12
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.Heap, ptr %21, i32 0, i32 2
  %23 = load i32, ptr %22, align 4, !tbaa !14
  %24 = icmp slt i32 %20, %23
  br i1 %24, label %26, label %25

25:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %41

26:                                               ; preds = %19
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = load i32, ptr %5, align 4, !tbaa !12
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds i32, ptr %27, i64 %29
  %31 = load i32, ptr %30, align 4, !tbaa !12
  %32 = load ptr, ptr %2, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.Heap, ptr %32, i32 0, i32 0
  %34 = load ptr, ptr %33, align 8, !tbaa !13
  %35 = load i32, ptr %5, align 4, !tbaa !12
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds i32, ptr %34, i64 %36
  store i32 %31, ptr %37, align 4, !tbaa !12
  br label %38

38:                                               ; preds = %26
  %39 = load i32, ptr %5, align 4, !tbaa !12
  %40 = add nsw i32 %39, 1
  store i32 %40, ptr %5, align 4, !tbaa !12
  br label %19, !llvm.loop !15

41:                                               ; preds = %25
  %42 = load i32, ptr %3, align 4, !tbaa !12
  %43 = load ptr, ptr %2, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.Heap, ptr %43, i32 0, i32 1
  store i32 %42, ptr %44, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret void
}

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

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

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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, !11, i64 8}
!10 = !{!"Heap", !6, i64 0, !11, i64 8, !11, i64 12, !11, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !6, i64 0}
!14 = !{!10, !11, i64 12}
!15 = distinct !{!15, !16}
!16 = !{!"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: nofree nounwind uwtable
define dso_local void @grow(ptr nocapture noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %4 = shl nsw i32 %3, 1
  %5 = load ptr, ptr %0, align 8, !tbaa !11
  %6 = sext i32 %4 to i64
  %7 = shl nsw i64 %6, 2
  %8 = tail call noalias ptr @malloc(i64 noundef %7) #2
  store ptr %8, ptr %0, align 8, !tbaa !11
  %9 = getelementptr inbounds i8, ptr %0, i64 12
  %10 = load i32, ptr %9, align 4, !tbaa !12
  %11 = icmp sgt i32 %10, 0
  br i1 %11, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %1
  %12 = ptrtoint ptr %8 to i64
  %13 = ptrtoint ptr %5 to i64
  %wide.trip.count = zext nneg i32 %10 to i64
  %min.iters.check = icmp ult i32 %10, 8
  %14 = sub i64 %12, %13
  %diff.check = icmp ult i64 %14, 32
  %or.cond = select i1 %min.iters.check, i1 true, i1 %diff.check
  br i1 %or.cond, label %.lr.ph.preheader15, label %vector.ph

.lr.ph.preheader15:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %xtraiter = and i64 %wide.trip.count, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol

.lr.ph.prol:                                      ; preds = %.lr.ph.preheader15, %.lr.ph.prol
  %indvars.iv.prol = phi i64 [ %indvars.iv.next.prol, %.lr.ph.prol ], [ %indvars.iv.ph, %.lr.ph.preheader15 ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader15 ]
  %15 = getelementptr inbounds i32, ptr %5, i64 %indvars.iv.prol
  %16 = load i32, ptr %15, align 4, !tbaa !13
  %17 = getelementptr inbounds i32, ptr %8, i64 %indvars.iv.prol
  store i32 %16, ptr %17, align 4, !tbaa !13
  %indvars.iv.next.prol = add nuw nsw i64 %indvars.iv.prol, 1
  %prol.iter.next = add i64 %prol.iter, 1
  %prol.iter.cmp.not = icmp eq i64 %prol.iter.next, %xtraiter
  br i1 %prol.iter.cmp.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol, !llvm.loop !14

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader15
  %indvars.iv.unr = phi i64 [ %indvars.iv.ph, %.lr.ph.preheader15 ], [ %indvars.iv.next.prol, %.lr.ph.prol ]
  %18 = sub nsw i64 %indvars.iv.ph, %wide.trip.count
  %19 = icmp ugt i64 %18, -4
  br i1 %19, label %._crit_edge, label %.lr.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %wide.trip.count, 2147483640
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %20 = getelementptr inbounds i32, ptr %5, i64 %index
  %21 = getelementptr inbounds i8, ptr %20, i64 16
  %wide.load = load <4 x i32>, ptr %20, align 4, !tbaa !13
  %wide.load14 = load <4 x i32>, ptr %21, align 4, !tbaa !13
  %22 = getelementptr inbounds i32, ptr %8, i64 %index
  %23 = getelementptr inbounds i8, ptr %22, i64 16
  store <4 x i32> %wide.load, ptr %22, align 4, !tbaa !13
  store <4 x i32> %wide.load14, ptr %23, align 4, !tbaa !13
  %index.next = add nuw i64 %index, 8
  %24 = icmp eq i64 %index.next, %n.vec
  br i1 %24, label %middle.block, label %vector.body, !llvm.loop !16

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader15

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %middle.block, %1
  store i32 %4, ptr %2, align 8, !tbaa !5
  ret void

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next.3, %.lr.ph ], [ %indvars.iv.unr, %.lr.ph.prol.loopexit ]
  %25 = getelementptr inbounds i32, ptr %5, i64 %indvars.iv
  %26 = load i32, ptr %25, align 4, !tbaa !13
  %27 = getelementptr inbounds i32, ptr %8, i64 %indvars.iv
  store i32 %26, ptr %27, align 4, !tbaa !13
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %28 = getelementptr inbounds i32, ptr %5, i64 %indvars.iv.next
  %29 = load i32, ptr %28, align 4, !tbaa !13
  %30 = getelementptr inbounds i32, ptr %8, i64 %indvars.iv.next
  store i32 %29, ptr %30, align 4, !tbaa !13
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %31 = getelementptr inbounds i32, ptr %5, i64 %indvars.iv.next.1
  %32 = load i32, ptr %31, align 4, !tbaa !13
  %33 = getelementptr inbounds i32, ptr %8, i64 %indvars.iv.next.1
  store i32 %32, ptr %33, align 4, !tbaa !13
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %34 = getelementptr inbounds i32, ptr %5, i64 %indvars.iv.next.2
  %35 = load i32, ptr %34, align 4, !tbaa !13
  %36 = getelementptr inbounds i32, ptr %8, i64 %indvars.iv.next.2
  store i32 %35, ptr %36, align 4, !tbaa !13
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %exitcond.not.3 = icmp eq i64 %indvars.iv.next.3, %wide.trip.count
  br i1 %exitcond.not.3, label %._crit_edge, label %.lr.ph, !llvm.loop !20
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

attributes #0 = { 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 #1 = { 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 #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 = !{!"Heap", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!6, !10, i64 12}
!13 = !{!10, !10, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.unroll.disable"}
!16 = distinct !{!16, !17, !18, !19}
!17 = !{!"llvm.loop.mustprogress"}
!18 = !{!"llvm.loop.isvectorized", i32 1}
!19 = !{!"llvm.loop.unroll.runtime.disable"}
!20 = distinct !{!20, !17, !18}


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