; LLVM IR from brpapa/algorithms :: solutions/uri/1200.ll (Z6insereRP4lldec)

; 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"

%struct.llde = type { i8, ptr, ptr }

@qteTotal = external dso_local global i32, align 4

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6insereRP4lldec(ptr noundef nonnull align 8 dereferenceable(8) %0, i8 noundef signext %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i8, align 1
  %5 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i8 %1, ptr %4, align 1, !tbaa !9
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  %8 = icmp eq ptr %7, null
  br i1 %8, label %9, label %22

9:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %10 = call noalias ptr @malloc(i64 noundef 24) #4
  store ptr %10, ptr %5, align 8, !tbaa !5
  %11 = load i8, ptr %4, align 1, !tbaa !9
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.llde, ptr %12, i32 0, i32 0
  store i8 %11, ptr %13, align 8, !tbaa !10
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.llde, ptr %14, i32 0, i32 2
  store ptr null, ptr %15, align 8, !tbaa !12
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.llde, ptr %16, i32 0, i32 1
  store ptr null, ptr %17, align 8, !tbaa !13
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %18, ptr %19, align 8, !tbaa !5
  %20 = load i32, ptr @qteTotal, align 4, !tbaa !14
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr @qteTotal, align 4, !tbaa !14
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %51

22:                                               ; preds = %2
  %23 = load i8, ptr %4, align 1, !tbaa !9
  %24 = sext i8 %23 to i32
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = load ptr, ptr %25, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.llde, ptr %26, i32 0, i32 0
  %28 = load i8, ptr %27, align 8, !tbaa !10
  %29 = sext i8 %28 to i32
  %30 = icmp slt i32 %24, %29
  br i1 %30, label %31, label %36

31:                                               ; preds = %22
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = load ptr, ptr %32, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.llde, ptr %33, i32 0, i32 1
  %35 = load i8, ptr %4, align 1, !tbaa !9
  call void @_Z6insereRP4lldec(ptr noundef nonnull align 8 dereferenceable(8) %34, i8 noundef signext %35)
  br label %36

36:                                               ; preds = %31, %22
  %37 = load i8, ptr %4, align 1, !tbaa !9
  %38 = sext i8 %37 to i32
  %39 = load ptr, ptr %3, align 8, !tbaa !5
  %40 = load ptr, ptr %39, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.llde, ptr %40, i32 0, i32 0
  %42 = load i8, ptr %41, align 8, !tbaa !10
  %43 = sext i8 %42 to i32
  %44 = icmp sgt i32 %38, %43
  br i1 %44, label %45, label %50

45:                                               ; preds = %36
  %46 = load ptr, ptr %3, align 8, !tbaa !5
  %47 = load ptr, ptr %46, align 8, !tbaa !5
  %48 = getelementptr inbounds %struct.llde, ptr %47, i32 0, i32 2
  %49 = load i8, ptr %4, align 1, !tbaa !9
  call void @_Z6insereRP4lldec(ptr noundef nonnull align 8 dereferenceable(8) %48, i8 noundef signext %49)
  br label %50

50:                                               ; preds = %45, %36
  br label %51

51:                                               ; preds = %50, %9
  ret void
}

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

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

attributes #0 = { mustprogress 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 allocsize(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 #3 = { nounwind }
attributes #4 = { nounwind allocsize(0) }

!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++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = !{!11, !7, i64 0}
!11 = !{!"_ZTS4llde", !7, i64 0, !6, i64 8, !6, i64 16}
!12 = !{!11, !6, i64 16}
!13 = !{!11, !6, i64 8}
!14 = !{!15, !15, i64 0}
!15 = !{!"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"

@qteTotal = external dso_local local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local void @_Z6insereRP4lldec(ptr nocapture noundef nonnull align 8 dereferenceable(8) %0, i8 noundef signext %1) local_unnamed_addr #0 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %4 = icmp eq ptr %3, null
  br i1 %4, label %tailrecurse._crit_edge, label %.lr.ph

tailrecurse:                                      ; preds = %17
  %5 = getelementptr inbounds i8, ptr %19, i64 16
  %6 = load ptr, ptr %5, align 8, !tbaa !5
  %7 = icmp eq ptr %6, null
  br i1 %7, label %tailrecurse._crit_edge, label %.lr.ph

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %2
  %.tr.lcssa = phi ptr [ %0, %2 ], [ %5, %tailrecurse ]
  %8 = tail call noalias dereferenceable_or_null(24) ptr @malloc(i64 noundef 24) #3
  store i8 %1, ptr %8, align 8, !tbaa !9
  %9 = getelementptr inbounds i8, ptr %8, i64 8
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %9, i8 0, i64 16, i1 false)
  store ptr %8, ptr %.tr.lcssa, align 8, !tbaa !5
  %10 = load i32, ptr @qteTotal, align 4, !tbaa !11
  %11 = add nsw i32 %10, 1
  store i32 %11, ptr @qteTotal, align 4, !tbaa !11
  br label %.loopexit

.lr.ph:                                           ; preds = %2, %tailrecurse
  %12 = phi ptr [ %6, %tailrecurse ], [ %3, %2 ]
  %.tr16 = phi ptr [ %5, %tailrecurse ], [ %0, %2 ]
  %13 = load i8, ptr %12, align 8, !tbaa !9
  %14 = icmp sgt i8 %13, %1
  br i1 %14, label %15, label %17

15:                                               ; preds = %.lr.ph
  %16 = getelementptr inbounds i8, ptr %12, i64 8
  tail call void @_Z6insereRP4lldec(ptr noundef nonnull align 8 dereferenceable(8) %16, i8 noundef signext %1)
  %.pre = load ptr, ptr %.tr16, align 8, !tbaa !5
  %.pre17 = load i8, ptr %.pre, align 8, !tbaa !9
  br label %17

17:                                               ; preds = %15, %.lr.ph
  %18 = phi i8 [ %.pre17, %15 ], [ %13, %.lr.ph ]
  %19 = phi ptr [ %.pre, %15 ], [ %12, %.lr.ph ]
  %20 = icmp slt i8 %18, %1
  br i1 %20, label %tailrecurse, label %.loopexit

.loopexit:                                        ; preds = %17, %tailrecurse._crit_edge
  ret void
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

attributes #0 = { mustprogress nofree 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 nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { nounwind allocsize(0) }

!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++ TBAA"}
!9 = !{!10, !7, i64 0}
!10 = !{!"_ZTS4llde", !7, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}


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