; LLVM IR from nickmqb/muon :: bootstrap/mu.ll_Interpreter (rankToMask__)

; 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"

@top_____abandonFn__ = external dso_local thread_local global ptr, align 8

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare nonnull ptr @llvm.threadlocal.address.p0(ptr nonnull) #0

; Function Attrs: nounwind uwtable
define dso_local i64 @Interpreter__rankToMask__(i32 noundef %0) #1 {
  %2 = alloca i64, align 8
  %3 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = icmp eq i32 %4, 8
  br i1 %5, label %6, label %7

6:                                                ; preds = %1
  store i64 -1, ptr %2, align 8
  br label %25

7:                                                ; preds = %1
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %9 = icmp eq i32 %8, 4
  br i1 %9, label %10, label %11

10:                                               ; preds = %7
  store i64 4294967295, ptr %2, align 8
  br label %25

11:                                               ; preds = %7
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = icmp eq i32 %12, 2
  br i1 %13, label %14, label %15

14:                                               ; preds = %11
  store i64 65535, ptr %2, align 8
  br label %25

15:                                               ; preds = %11
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = icmp eq i32 %16, 1
  br i1 %17, label %18, label %19

18:                                               ; preds = %15
  store i64 255, ptr %2, align 8
  br label %25

19:                                               ; preds = %15
  br label %20

20:                                               ; preds = %19
  br label %21

21:                                               ; preds = %20
  br label %22

22:                                               ; preds = %21
  %23 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @top_____abandonFn__)
  %24 = load ptr, ptr %23, align 8, !tbaa !9
  call void %24(i32 noundef -1)
  store i64 0, ptr %2, align 8
  br label %25

25:                                               ; preds = %22, %18, %14, %10, %6
  %26 = load i64, ptr %2, align 8
  ret i64 %26
}

attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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" }

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

@top_____abandonFn__ = external dso_local thread_local local_unnamed_addr global ptr, align 8
@switch.table.Interpreter__rankToMask__ = private unnamed_addr constant [8 x i64] [i64 255, i64 65535, i64 -1, i64 4294967295, i64 -1, i64 -1, i64 -1, i64 -1], align 8

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare nonnull ptr @llvm.threadlocal.address.p0(ptr nonnull) #0

; Function Attrs: nounwind uwtable
define dso_local range(i64 -1, 4294967296) i64 @Interpreter__rankToMask__(i32 noundef %0) local_unnamed_addr #1 {
  %switch.tableidx = add i32 %0, -1
  %2 = icmp ult i32 %switch.tableidx, 8
  br i1 %2, label %switch.hole_check, label %3

3:                                                ; preds = %switch.hole_check, %1
  %4 = tail call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @top_____abandonFn__)
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  tail call void %5(i32 noundef -1) #2
  br label %7

switch.hole_check:                                ; preds = %1
  %switch.maskindex = trunc nuw i32 %switch.tableidx to i8
  %switch.shifted = lshr i8 -117, %switch.maskindex
  %switch.lobit = trunc i8 %switch.shifted to i1
  br i1 %switch.lobit, label %switch.lookup, label %3

switch.lookup:                                    ; preds = %switch.hole_check
  %6 = zext nneg i32 %switch.tableidx to i64
  %switch.gep = getelementptr inbounds [8 x i64], ptr @switch.table.Interpreter__rankToMask__, i64 0, i64 %6
  %switch.load = load i64, ptr %switch.gep, align 8
  br label %7

7:                                                ; preds = %switch.lookup, %3
  %.0 = phi i64 [ 0, %3 ], [ %switch.load, %switch.lookup ]
  ret i64 %.0
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


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