; LLVM IR from ionescu007/minlzma :: minlzlib (rangedec)

; 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: 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 uwtable
declare dso_local zeroext i8 @RcIsBitSet(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local zeroext i8 @RcGetBitTree(ptr noundef %0, i16 noundef zeroext %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i16, align 2
  %5 = alloca i16, align 2
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i16 %1, ptr %4, align 2, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 2, ptr %5) #2
  store i16 1, ptr %5, align 2, !tbaa !9
  br label %6

6:                                                ; preds = %12, %2
  %7 = load i16, ptr %5, align 2, !tbaa !9
  %8 = zext i16 %7 to i32
  %9 = load i16, ptr %4, align 2, !tbaa !9
  %10 = zext i16 %9 to i32
  %11 = icmp slt i32 %8, %10
  br i1 %11, label %12, label %26

12:                                               ; preds = %6
  %13 = load i16, ptr %5, align 2, !tbaa !9
  %14 = zext i16 %13 to i32
  %15 = shl i32 %14, 1
  %16 = trunc i32 %15 to i16
  %17 = zext i16 %16 to i32
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = load i16, ptr %5, align 2, !tbaa !9
  %20 = zext i16 %19 to i64
  %21 = getelementptr inbounds i16, ptr %18, i64 %20
  %22 = call zeroext i8 @RcIsBitSet(ptr noundef %21)
  %23 = zext i8 %22 to i32
  %24 = or i32 %17, %23
  %25 = trunc i32 %24 to i16
  store i16 %25, ptr %5, align 2, !tbaa !9
  br label %6, !llvm.loop !11

26:                                               ; preds = %6
  %27 = load i16, ptr %5, align 2, !tbaa !9
  %28 = zext i16 %27 to i32
  %29 = load i16, ptr %4, align 2, !tbaa !9
  %30 = zext i16 %29 to i32
  %31 = sub nsw i32 %28, %30
  %32 = and i32 %31, 255
  %33 = trunc i32 %32 to i8
  call void @llvm.lifetime.end.p0(i64 2, ptr %5) #2
  ret i8 %33
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"short", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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: nounwind uwtable
declare dso_local zeroext i8 @RcIsBitSet(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local zeroext i8 @RcGetBitTree(ptr noundef %0, i16 noundef zeroext %1) local_unnamed_addr #0 {
  %3 = icmp ugt i16 %1, 1
  br i1 %3, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.08 = phi i16 [ %9, %.lr.ph ], [ 1, %2 ]
  %4 = shl i16 %.08, 1
  %5 = zext i16 %.08 to i64
  %6 = getelementptr inbounds i16, ptr %0, i64 %5
  %7 = tail call zeroext i8 @RcIsBitSet(ptr noundef %6)
  %8 = zext i8 %7 to i16
  %9 = or i16 %4, %8
  %10 = icmp ult i16 %9, %1
  br i1 %10, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %2
  %.0.lcssa = phi i16 [ 1, %2 ], [ %9, %.lr.ph ]
  %11 = sub i16 %.0.lcssa, %1
  %12 = trunc i16 %11 to i8
  ret i8 %12
}

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" }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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