; LLVM IR from pixelsdb/mini-pixels :: pixels-core/lib/utils/EncodingUtils.ll (ZN13EncodingUtils14decodeBitWidthEi)

; 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"

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN13EncodingUtils14decodeBitWidthEi(ptr noundef nonnull align 8 dereferenceable(16) %0, i32 noundef %1) #0 align 2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %6 = load ptr, ptr %4, align 8
  %7 = load i32, ptr %5, align 4, !tbaa !9
  %8 = icmp sge i32 %7, 0
  br i1 %8, label %9, label %15

9:                                                ; preds = %2
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = icmp sle i32 %10, 23
  br i1 %11, label %12, label %15

12:                                               ; preds = %9
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = add nsw i32 %13, 1
  store i32 %14, ptr %3, align 4
  br label %44

15:                                               ; preds = %9, %2
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = icmp eq i32 %16, 24
  br i1 %17, label %18, label %19

18:                                               ; preds = %15
  store i32 26, ptr %3, align 4
  br label %44

19:                                               ; preds = %15
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = icmp eq i32 %20, 25
  br i1 %21, label %22, label %23

22:                                               ; preds = %19
  store i32 28, ptr %3, align 4
  br label %44

23:                                               ; preds = %19
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = icmp eq i32 %24, 26
  br i1 %25, label %26, label %27

26:                                               ; preds = %23
  store i32 30, ptr %3, align 4
  br label %44

27:                                               ; preds = %23
  %28 = load i32, ptr %5, align 4, !tbaa !9
  %29 = icmp eq i32 %28, 27
  br i1 %29, label %30, label %31

30:                                               ; preds = %27
  store i32 32, ptr %3, align 4
  br label %44

31:                                               ; preds = %27
  %32 = load i32, ptr %5, align 4, !tbaa !9
  %33 = icmp eq i32 %32, 28
  br i1 %33, label %34, label %35

34:                                               ; preds = %31
  store i32 40, ptr %3, align 4
  br label %44

35:                                               ; preds = %31
  %36 = load i32, ptr %5, align 4, !tbaa !9
  %37 = icmp eq i32 %36, 29
  br i1 %37, label %38, label %39

38:                                               ; preds = %35
  store i32 48, ptr %3, align 4
  br label %44

39:                                               ; preds = %35
  %40 = load i32, ptr %5, align 4, !tbaa !9
  %41 = icmp eq i32 %40, 30
  br i1 %41, label %42, label %43

42:                                               ; preds = %39
  store i32 56, ptr %3, align 4
  br label %44

43:                                               ; preds = %39
  store i32 64, ptr %3, align 4
  br label %44

44:                                               ; preds = %43, %42, %38, %34, %30, %26, %22, %18, %12
  %45 = load i32, ptr %3, align 4
  ret i32 %45
}

attributes #0 = { mustprogress 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" }

!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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}


; 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"

@switch.table._ZN13EncodingUtils14decodeBitWidthEi = private unnamed_addr constant [7 x i32] [i32 26, i32 28, i32 30, i32 32, i32 40, i32 48, i32 56], align 4

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef range(i32 1, 65) i32 @_ZN13EncodingUtils14decodeBitWidthEi(ptr nocapture noundef nonnull readnone align 8 dereferenceable(16) %0, i32 noundef %1) local_unnamed_addr #0 align 2 {
  %or.cond = icmp ult i32 %1, 24
  br i1 %or.cond, label %3, label %5

3:                                                ; preds = %2
  %4 = add nuw nsw i32 %1, 1
  br label %8

5:                                                ; preds = %2
  %switch.tableidx = add i32 %1, -24
  %6 = icmp ult i32 %switch.tableidx, 7
  br i1 %6, label %switch.lookup, label %8

switch.lookup:                                    ; preds = %5
  %7 = zext nneg i32 %switch.tableidx to i64
  %switch.gep = getelementptr inbounds [7 x i32], ptr @switch.table._ZN13EncodingUtils14decodeBitWidthEi, i64 0, i64 %7
  %switch.load = load i32, ptr %switch.gep, align 4
  br label %8

8:                                                ; preds = %5, %switch.lookup, %3
  %.0 = phi i32 [ %4, %3 ], [ %switch.load, %switch.lookup ], [ 64, %5 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) 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" }

!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)"}


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