; LLVM IR from snowballstem/snowball :: compiler (space)

; 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
define dso_local i32 @get_utf8(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds i16, ptr %9, i32 1
  store ptr %10, ptr %4, align 8, !tbaa !5
  %11 = load i16, ptr %9, align 2, !tbaa !9
  %12 = zext i16 %11 to i32
  store i32 %12, ptr %6, align 4, !tbaa !11
  %13 = load i32, ptr %6, align 4, !tbaa !11
  %14 = icmp slt i32 %13, 192
  br i1 %14, label %15, label %18

15:                                               ; preds = %2
  %16 = load i32, ptr %6, align 4, !tbaa !11
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  store i32 %16, ptr %17, align 4, !tbaa !11
  store i32 1, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %47

18:                                               ; preds = %2
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds i16, ptr %19, i32 1
  store ptr %20, ptr %4, align 8, !tbaa !5
  %21 = load i16, ptr %19, align 2, !tbaa !9
  %22 = zext i16 %21 to i32
  store i32 %22, ptr %7, align 4, !tbaa !11
  %23 = load i32, ptr %6, align 4, !tbaa !11
  %24 = icmp slt i32 %23, 224
  br i1 %24, label %25, label %33

25:                                               ; preds = %18
  %26 = load i32, ptr %6, align 4, !tbaa !11
  %27 = and i32 %26, 31
  %28 = shl i32 %27, 6
  %29 = load i32, ptr %7, align 4, !tbaa !11
  %30 = and i32 %29, 63
  %31 = or i32 %28, %30
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  store i32 %31, ptr %32, align 4, !tbaa !11
  store i32 2, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %47

33:                                               ; preds = %18
  %34 = load i32, ptr %6, align 4, !tbaa !11
  %35 = and i32 %34, 15
  %36 = shl i32 %35, 12
  %37 = load i32, ptr %7, align 4, !tbaa !11
  %38 = and i32 %37, 63
  %39 = shl i32 %38, 6
  %40 = or i32 %36, %39
  %41 = load ptr, ptr %4, align 8, !tbaa !5
  %42 = load i16, ptr %41, align 2, !tbaa !9
  %43 = zext i16 %42 to i32
  %44 = and i32 %43, 63
  %45 = or i32 %40, %44
  %46 = load ptr, ptr %5, align 8, !tbaa !5
  store i32 %45, ptr %46, align 4, !tbaa !11
  store i32 3, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %47

47:                                               ; preds = %33, %25, %15
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %48 = load i32, ptr %3, align 4
  ret i32 %48
}

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 = !{!12, !12, i64 0}
!12 = !{!"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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local range(i32 1, 4) i32 @get_utf8(ptr nocapture noundef readonly %0, ptr nocapture noundef writeonly %1) local_unnamed_addr #0 {
  %3 = load i16, ptr %0, align 2, !tbaa !5
  %4 = zext i16 %3 to i32
  %5 = icmp ult i16 %3, 192
  br i1 %5, label %27, label %6

6:                                                ; preds = %2
  %7 = getelementptr inbounds i8, ptr %0, i64 2
  %8 = load i16, ptr %7, align 2, !tbaa !5
  %9 = zext i16 %8 to i32
  %10 = icmp ult i16 %3, 224
  br i1 %10, label %11, label %16

11:                                               ; preds = %6
  %12 = shl nuw nsw i32 %4, 6
  %13 = and i32 %12, 1984
  %14 = and i32 %9, 63
  %15 = or disjoint i32 %14, %13
  br label %27

16:                                               ; preds = %6
  %17 = getelementptr inbounds i8, ptr %0, i64 4
  %18 = shl nuw nsw i32 %4, 12
  %19 = and i32 %18, 61440
  %20 = shl nuw nsw i32 %9, 6
  %21 = and i32 %20, 4032
  %22 = or disjoint i32 %21, %19
  %23 = load i16, ptr %17, align 2, !tbaa !5
  %24 = and i16 %23, 63
  %25 = zext nneg i16 %24 to i32
  %26 = or disjoint i32 %22, %25
  br label %27

27:                                               ; preds = %2, %16, %11
  %.sink = phi i32 [ %26, %16 ], [ %15, %11 ], [ %4, %2 ]
  %.0 = phi i32 [ 3, %16 ], [ 2, %11 ], [ 1, %2 ]
  store i32 %.sink, ptr %1, align 4, !tbaa !9
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}


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