; LLVM IR from microsoft/LightAIMD :: src (utf8)

; 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 void @utf8_codepoints_to_cstr(ptr noundef %0, i64 noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %9 = load i64, ptr %5, align 8, !tbaa !9
  %10 = add i64 %9, 1
  %11 = call ptr @x_malloc(i64 noundef %10)
  store ptr %11, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store i64 0, ptr %8, align 8, !tbaa !9
  br label %12

12:                                               ; preds = %26, %3
  %13 = load i64, ptr %8, align 8, !tbaa !9
  %14 = load i64, ptr %5, align 8, !tbaa !9
  %15 = icmp ult i64 %13, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %29

17:                                               ; preds = %12
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = load i64, ptr %8, align 8, !tbaa !9
  %20 = getelementptr inbounds i32, ptr %18, i64 %19
  %21 = load i32, ptr %20, align 4, !tbaa !11
  %22 = trunc i32 %21 to i8
  %23 = load ptr, ptr %7, align 8, !tbaa !5
  %24 = load i64, ptr %8, align 8, !tbaa !9
  %25 = getelementptr inbounds i8, ptr %23, i64 %24
  store i8 %22, ptr %25, align 1, !tbaa !13
  br label %26

26:                                               ; preds = %17
  %27 = load i64, ptr %8, align 8, !tbaa !9
  %28 = add i64 %27, 1
  store i64 %28, ptr %8, align 8, !tbaa !9
  br label %12, !llvm.loop !14

29:                                               ; preds = %16
  %30 = load ptr, ptr %7, align 8, !tbaa !5
  %31 = load i64, ptr %5, align 8, !tbaa !9
  %32 = getelementptr inbounds i8, ptr %30, i64 %31
  store i8 0, ptr %32, align 1, !tbaa !13
  %33 = load ptr, ptr %7, align 8, !tbaa !5
  %34 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %33, ptr %34, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret void
}

declare ptr @x_malloc(i64 noundef) #2

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 = { "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 #3 = { 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 = !{!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: nounwind uwtable
define dso_local void @utf8_codepoints_to_cstr(ptr nocapture noundef readonly %0, i64 noundef %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #0 {
  %4 = add i64 %1, 1
  %5 = tail call ptr @x_malloc(i64 noundef %4) #2
  %.not = icmp eq i64 %1, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %3
  %min.iters.check = icmp ult i64 %1, 12
  br i1 %min.iters.check, label %.lr.ph.preheader15, label %vector.memcheck

.lr.ph.preheader15:                               ; preds = %middle.block, %vector.memcheck, %.lr.ph.preheader
  %.012.ph = phi i64 [ 0, %vector.memcheck ], [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %xtraiter = and i64 %1, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol

.lr.ph.prol:                                      ; preds = %.lr.ph.preheader15, %.lr.ph.prol
  %.012.prol = phi i64 [ %10, %.lr.ph.prol ], [ %.012.ph, %.lr.ph.preheader15 ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader15 ]
  %6 = getelementptr inbounds i32, ptr %0, i64 %.012.prol
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = trunc i32 %7 to i8
  %9 = getelementptr inbounds i8, ptr %5, i64 %.012.prol
  store i8 %8, ptr %9, align 1, !tbaa !9
  %10 = add nuw i64 %.012.prol, 1
  %prol.iter.next = add i64 %prol.iter, 1
  %prol.iter.cmp.not = icmp eq i64 %prol.iter.next, %xtraiter
  br i1 %prol.iter.cmp.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol, !llvm.loop !10

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader15
  %.012.unr = phi i64 [ %.012.ph, %.lr.ph.preheader15 ], [ %10, %.lr.ph.prol ]
  %11 = sub i64 %.012.ph, %1
  %12 = icmp ugt i64 %11, -4
  br i1 %12, label %._crit_edge, label %.lr.ph

vector.memcheck:                                  ; preds = %.lr.ph.preheader
  %scevgep = getelementptr i8, ptr %5, i64 %1
  %13 = shl i64 %1, 2
  %scevgep13 = getelementptr i8, ptr %0, i64 %13
  %bound0 = icmp ult ptr %5, %scevgep13
  %bound1 = icmp ugt ptr %scevgep, %0
  %found.conflict = and i1 %bound0, %bound1
  br i1 %found.conflict, label %.lr.ph.preheader15, label %vector.ph

vector.ph:                                        ; preds = %vector.memcheck
  %n.vec = and i64 %1, -8
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %14 = getelementptr inbounds i32, ptr %0, i64 %index
  %15 = getelementptr inbounds i8, ptr %14, i64 16
  %wide.load = load <4 x i32>, ptr %14, align 4, !tbaa !5, !alias.scope !12
  %wide.load14 = load <4 x i32>, ptr %15, align 4, !tbaa !5, !alias.scope !12
  %16 = trunc <4 x i32> %wide.load to <4 x i8>
  %17 = trunc <4 x i32> %wide.load14 to <4 x i8>
  %18 = getelementptr inbounds i8, ptr %5, i64 %index
  %19 = getelementptr inbounds i8, ptr %18, i64 4
  store <4 x i8> %16, ptr %18, align 1, !tbaa !9, !alias.scope !15, !noalias !12
  store <4 x i8> %17, ptr %19, align 1, !tbaa !9, !alias.scope !15, !noalias !12
  %index.next = add nuw i64 %index, 8
  %20 = icmp eq i64 %index.next, %n.vec
  br i1 %20, label %middle.block, label %vector.body, !llvm.loop !17

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %1
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader15

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %middle.block, %3
  %21 = getelementptr inbounds i8, ptr %5, i64 %1
  store i8 0, ptr %21, align 1, !tbaa !9
  store ptr %5, ptr %2, align 8, !tbaa !21
  ret void

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %.012 = phi i64 [ %41, %.lr.ph ], [ %.012.unr, %.lr.ph.prol.loopexit ]
  %22 = getelementptr inbounds i32, ptr %0, i64 %.012
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = trunc i32 %23 to i8
  %25 = getelementptr inbounds i8, ptr %5, i64 %.012
  store i8 %24, ptr %25, align 1, !tbaa !9
  %26 = add nuw i64 %.012, 1
  %27 = getelementptr inbounds i32, ptr %0, i64 %26
  %28 = load i32, ptr %27, align 4, !tbaa !5
  %29 = trunc i32 %28 to i8
  %30 = getelementptr inbounds i8, ptr %5, i64 %26
  store i8 %29, ptr %30, align 1, !tbaa !9
  %31 = add nuw i64 %.012, 2
  %32 = getelementptr inbounds i32, ptr %0, i64 %31
  %33 = load i32, ptr %32, align 4, !tbaa !5
  %34 = trunc i32 %33 to i8
  %35 = getelementptr inbounds i8, ptr %5, i64 %31
  store i8 %34, ptr %35, align 1, !tbaa !9
  %36 = add nuw i64 %.012, 3
  %37 = getelementptr inbounds i32, ptr %0, i64 %36
  %38 = load i32, ptr %37, align 4, !tbaa !5
  %39 = trunc i32 %38 to i8
  %40 = getelementptr inbounds i8, ptr %5, i64 %36
  store i8 %39, ptr %40, align 1, !tbaa !9
  %41 = add nuw i64 %.012, 4
  %exitcond.not.3 = icmp eq i64 %41, %1
  br i1 %exitcond.not.3, label %._crit_edge, label %.lr.ph, !llvm.loop !23
}

declare ptr @x_malloc(i64 noundef) local_unnamed_addr #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 = { "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.unroll.disable"}
!12 = !{!13}
!13 = distinct !{!13, !14}
!14 = distinct !{!14, !"LVerDomain"}
!15 = !{!16}
!16 = distinct !{!16, !14}
!17 = distinct !{!17, !18, !19, !20}
!18 = !{!"llvm.loop.mustprogress"}
!19 = !{!"llvm.loop.isvectorized", i32 1}
!20 = !{!"llvm.loop.unroll.runtime.disable"}
!21 = !{!22, !22, i64 0}
!22 = !{!"any pointer", !7, i64 0}
!23 = distinct !{!23, !18, !19}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass