; LLVM IR from mikdusan/benchmark.unicode :: src/atom.wellons.simple (atom_wellons_simple_spin)

; 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: nounwind uwtable
declare dso_local ptr @atom_wellons_simple_utf8_decode(ptr noundef, ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local void @atom_wellons_simple_spin(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i64, align 8
  %11 = alloca i64, align 8
  %12 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  store ptr %3, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  store i64 0, ptr %10, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #2
  store i64 0, ptr %11, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #2
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %13, ptr %12, align 8, !tbaa !5
  br label %14

14:                                               ; preds = %29, %4
  %15 = load ptr, ptr %12, align 8, !tbaa !5
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  %17 = icmp ult ptr %15, %16
  br i1 %17, label %18, label %30

18:                                               ; preds = %14
  %19 = load ptr, ptr %12, align 8, !tbaa !5
  %20 = call ptr @atom_wellons_simple_utf8_decode(ptr noundef %19, ptr noundef %9)
  store ptr %20, ptr %12, align 8, !tbaa !5
  %21 = load i32, ptr %9, align 4, !tbaa !11
  %22 = icmp eq i32 %21, -1
  br i1 %22, label %23, label %26

23:                                               ; preds = %18
  %24 = load i64, ptr %10, align 8, !tbaa !9
  %25 = add i64 %24, 1
  store i64 %25, ptr %10, align 8, !tbaa !9
  br label %29

26:                                               ; preds = %18
  %27 = load i64, ptr %11, align 8, !tbaa !9
  %28 = add i64 %27, 1
  store i64 %28, ptr %11, align 8, !tbaa !9
  br label %29

29:                                               ; preds = %26, %23
  br label %14, !llvm.loop !13

30:                                               ; preds = %14
  %31 = load i64, ptr %10, align 8, !tbaa !9
  %32 = load ptr, ptr %8, align 8, !tbaa !5
  %33 = load i64, ptr %32, align 8, !tbaa !9
  %34 = add i64 %33, %31
  store i64 %34, ptr %32, align 8, !tbaa !9
  %35 = load i64, ptr %11, align 8, !tbaa !9
  %36 = load ptr, ptr %7, align 8, !tbaa !5
  %37 = load i64, ptr %36, align 8, !tbaa !9
  %38 = add i64 %37, %35
  store i64 %38, ptr %36, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  ret void
}

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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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 ptr @atom_wellons_simple_utf8_decode(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local void @atom_wellons_simple_spin(ptr noundef %0, ptr noundef readnone %1, ptr nocapture noundef %2, ptr nocapture noundef %3) local_unnamed_addr #0 {
  %5 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #2
  %6 = icmp ult ptr %0, %1
  br i1 %6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %4, %.lr.ph
  %.014 = phi ptr [ %7, %.lr.ph ], [ %0, %4 ]
  %.0913 = phi i64 [ %.1, %.lr.ph ], [ 0, %4 ]
  %.01012 = phi i64 [ %.111, %.lr.ph ], [ 0, %4 ]
  %7 = call ptr @atom_wellons_simple_utf8_decode(ptr noundef %.014, ptr noundef nonnull %5)
  %8 = load i32, ptr %5, align 4, !tbaa !5
  %9 = icmp eq i32 %8, -1
  %10 = zext i1 %9 to i64
  %.111 = add i64 %.01012, %10
  %not. = xor i1 %9, true
  %11 = zext i1 %not. to i64
  %.1 = add i64 %.0913, %11
  %12 = icmp ult ptr %7, %1
  br i1 %12, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %4
  %.010.lcssa = phi i64 [ 0, %4 ], [ %.111, %.lr.ph ]
  %.09.lcssa = phi i64 [ 0, %4 ], [ %.1, %.lr.ph ]
  %13 = load i64, ptr %3, align 8, !tbaa !11
  %14 = add i64 %13, %.010.lcssa
  store i64 %14, ptr %3, align 8, !tbaa !11
  %15 = load i64, ptr %2, align 8, !tbaa !11
  %16 = add i64 %15, %.09.lcssa
  store i64 %16, ptr %2, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #2
  ret void
}

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" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}


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