; LLVM IR from jingweizhanghuai/Morn :: src/util (morn_map)

; 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.MChainNode = type { ptr, ptr, ptr }

@.str = external hidden unnamed_addr constant [75 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [17 x i8], align 1
@__FUNCTION__.mornMapNodeValue = external hidden unnamed_addr constant [17 x i8], align 1

; 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

declare void @m_Exception(i32 noundef, i32 noundef, ptr noundef, i32 noundef, ptr noundef, ptr noundef, ...) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @mornMapNodeValue(ptr noundef %0) #2 {
  %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
  br label %6

6:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = icmp eq ptr %7, null
  br i1 %8, label %13, label %9

9:                                                ; preds = %6
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = ptrtoint ptr %10 to i64
  %12 = icmp eq i64 %11, -1
  br label %13

13:                                               ; preds = %9, %6
  %14 = phi i1 [ true, %6 ], [ %12, %9 ]
  %15 = zext i1 %14 to i32
  store i32 %15, ptr %3, align 4, !tbaa !9
  %16 = load i32, ptr %3, align 4, !tbaa !9
  %17 = icmp ne i32 %16, 0
  br i1 %17, label %18, label %20

18:                                               ; preds = %13
  %19 = load i32, ptr %3, align 4, !tbaa !9
  call void (i32, i32, ptr, i32, ptr, ptr, ...) @m_Exception(i32 noundef %19, i32 noundef -1, ptr noundef @.str, i32 noundef 254, ptr noundef @__FUNCTION__.mornMapNodeValue, ptr noundef @.str.5)
  br label %20

20:                                               ; preds = %18, %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %21

21:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %22 = load ptr, ptr %2, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.MChainNode, ptr %22, i32 0, i32 0
  %24 = load ptr, ptr %23, align 8, !tbaa !11
  store ptr %24, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds i32, ptr %25, i64 0
  %27 = load i32, ptr %26, align 4, !tbaa !9
  %28 = add nsw i32 %27, 7
  %29 = ashr i32 %28, 3
  %30 = sext i32 %29 to i64
  %31 = mul i64 %30, 2
  %32 = trunc i64 %31 to i32
  store i32 %32, ptr %5, align 4, !tbaa !9
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = getelementptr inbounds i32, ptr %33, i64 2
  %35 = load i32, ptr %5, align 4, !tbaa !9
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds i32, ptr %34, i64 %36
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  ret ptr %37
}

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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"MChainNode", !6, i64 0, !6, i64 8, !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"

@.str = external hidden unnamed_addr constant [75 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [17 x i8], align 1
@__FUNCTION__.mornMapNodeValue = external hidden unnamed_addr constant [17 x i8], align 1

declare void @m_Exception(i32 noundef, i32 noundef, ptr noundef, i32 noundef, ptr noundef, ptr noundef, ...) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local nonnull ptr @mornMapNodeValue(ptr noundef %0) local_unnamed_addr #1 {
  %magicptr = ptrtoint ptr %0 to i64
  switch i64 %magicptr, label %7 [
    i64 -1, label %2
    i64 0, label %2
  ]

2:                                                ; preds = %1, %1
  %3 = icmp eq ptr %0, null
  %4 = icmp eq ptr %0, inttoptr (i64 -1 to ptr)
  %5 = or i1 %3, %4
  %6 = zext i1 %5 to i32
  tail call void (i32, i32, ptr, i32, ptr, ptr, ...) @m_Exception(i32 noundef %6, i32 noundef -1, ptr noundef nonnull @.str, i32 noundef 254, ptr noundef nonnull @__FUNCTION__.mornMapNodeValue, ptr noundef nonnull @.str.5) #2
  br label %7

7:                                                ; preds = %1, %2
  %8 = load ptr, ptr %0, align 8, !tbaa !5
  %9 = load i32, ptr %8, align 4, !tbaa !10
  %10 = add nsw i32 %9, 7
  %11 = ashr i32 %10, 2
  %12 = and i32 %11, -2
  %13 = getelementptr inbounds i8, ptr %8, i64 8
  %14 = sext i32 %12 to i64
  %15 = getelementptr inbounds i32, ptr %13, i64 %14
  ret ptr %15
}

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, !7, i64 0}
!6 = !{!"MChainNode", !7, i64 0, !7, i64 8, !7, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !11, i64 0}
!11 = !{!"int", !8, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass