; LLVM IR from mlcommons/tiny :: benchmark/interface/Middlewares/ST/filex/common/src/fx_unicode_length_get_exte_fae78f8e (extended)

; 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
define dso_local i64 @_fx_unicode_length_get_extended(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  store i64 0, ptr %5, align 8, !tbaa !11
  store i64 0, ptr %6, align 8, !tbaa !11
  br label %7

7:                                                ; preds = %28, %2
  %8 = load i64, ptr %5, align 8, !tbaa !11
  %9 = load i32, ptr %4, align 4, !tbaa !9
  %10 = zext i32 %9 to i64
  %11 = icmp ult i64 %8, %10
  br i1 %11, label %12, label %33

12:                                               ; preds = %7
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = load i64, ptr %5, align 8, !tbaa !11
  %15 = getelementptr inbounds i8, ptr %13, i64 %14
  %16 = load i8, ptr %15, align 1, !tbaa !13
  %17 = zext i8 %16 to i32
  %18 = icmp eq i32 %17, 0
  br i1 %18, label %19, label %28

19:                                               ; preds = %12
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = load i64, ptr %5, align 8, !tbaa !11
  %22 = add i64 %21, 1
  %23 = getelementptr inbounds i8, ptr %20, i64 %22
  %24 = load i8, ptr %23, align 1, !tbaa !13
  %25 = zext i8 %24 to i32
  %26 = icmp eq i32 %25, 0
  br i1 %26, label %27, label %28

27:                                               ; preds = %19
  br label %33

28:                                               ; preds = %19, %12
  %29 = load i64, ptr %5, align 8, !tbaa !11
  %30 = add i64 %29, 2
  store i64 %30, ptr %5, align 8, !tbaa !11
  %31 = load i64, ptr %6, align 8, !tbaa !11
  %32 = add i64 %31, 1
  store i64 %32, ptr %6, align 8, !tbaa !11
  br label %7, !llvm.loop !14

33:                                               ; preds = %27, %7
  %34 = load i64, ptr %6, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret i64 %34
}

; 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

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 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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: nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local i64 @_fx_unicode_length_get_extended(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %3 = zext i32 %1 to i64
  %4 = add nsw i64 %3, -1
  %5 = lshr i64 %4, 1
  %6 = add nuw nsw i64 %5, 1
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %15
  %.010 = phi i64 [ %17, %15 ], [ 0, %.lr.ph.preheader ]
  %.089 = phi i64 [ %16, %15 ], [ 0, %.lr.ph.preheader ]
  %7 = getelementptr inbounds i8, ptr %0, i64 %.089
  %8 = load i8, ptr %7, align 1, !tbaa !5
  %9 = icmp eq i8 %8, 0
  br i1 %9, label %10, label %15

10:                                               ; preds = %.lr.ph
  %11 = or disjoint i64 %.089, 1
  %12 = getelementptr inbounds i8, ptr %0, i64 %11
  %13 = load i8, ptr %12, align 1, !tbaa !5
  %14 = icmp eq i8 %13, 0
  br i1 %14, label %._crit_edge, label %15

15:                                               ; preds = %10, %.lr.ph
  %16 = add nuw nsw i64 %.089, 2
  %17 = add nuw nsw i64 %.010, 1
  %exitcond.not = icmp eq i64 %.010, %5
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !8

._crit_edge:                                      ; preds = %15, %10, %2
  %.0.lcssa = phi i64 [ 0, %2 ], [ %.010, %10 ], [ %6, %15 ]
  ret i64 %.0.lcssa
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: read) 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass