; LLVM IR from upupming/algorithm :: acwing/算法竞赛进阶指南/0x18-总结与练习/161. 电话列表/Z6insertRNSt7/cxx1112basic_stringIcSt11c_6ddccd54/Z6insertRNSt7 (traitsIcESaIcEEE)

; 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"

@trie = external dso_local global [1000010 x [10 x i32]], align 16
@tot = external dso_local global i32, align 4
@cnt = external dso_local global [1000010 x i32], align 16

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z6insertRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(32) %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i8, align 1
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %8) #3
  %10 = trunc i64 %9 to i32
  store i32 %10, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #3
  store i8 0, ptr %5, align 1, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %56, %1
  %12 = load i32, ptr %6, align 4, !tbaa !9
  %13 = load i32, ptr %3, align 4, !tbaa !9
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %59

16:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %17 = load ptr, ptr %2, align 8, !tbaa !5
  %18 = load i32, ptr %6, align 4, !tbaa !9
  %19 = sext i32 %18 to i64
  %20 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %17, i64 noundef %19)
  %21 = load i8, ptr %20, align 1, !tbaa !13
  %22 = sext i8 %21 to i32
  %23 = sub nsw i32 %22, 48
  store i32 %23, ptr %7, align 4, !tbaa !9
  %24 = load i32, ptr %4, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [1000010 x [10 x i32]], ptr @trie, i64 0, i64 %25
  %27 = load i32, ptr %7, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds [10 x i32], ptr %26, i64 0, i64 %28
  %30 = load i32, ptr %29, align 4, !tbaa !9
  %31 = icmp eq i32 %30, 0
  br i1 %31, label %32, label %41

32:                                               ; preds = %16
  %33 = load i32, ptr @tot, align 4, !tbaa !9
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr @tot, align 4, !tbaa !9
  %35 = load i32, ptr %4, align 4, !tbaa !9
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds [1000010 x [10 x i32]], ptr @trie, i64 0, i64 %36
  %38 = load i32, ptr %7, align 4, !tbaa !9
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds [10 x i32], ptr %37, i64 0, i64 %39
  store i32 %34, ptr %40, align 4, !tbaa !9
  br label %41

41:                                               ; preds = %32, %16
  %42 = load i32, ptr %4, align 4, !tbaa !9
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds [1000010 x [10 x i32]], ptr @trie, i64 0, i64 %43
  %45 = load i32, ptr %7, align 4, !tbaa !9
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds [10 x i32], ptr %44, i64 0, i64 %46
  %48 = load i32, ptr %47, align 4, !tbaa !9
  store i32 %48, ptr %4, align 4, !tbaa !9
  %49 = load i32, ptr %4, align 4, !tbaa !9
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds [1000010 x i32], ptr @cnt, i64 0, i64 %50
  %52 = load i32, ptr %51, align 4, !tbaa !9
  %53 = icmp ne i32 %52, 0
  br i1 %53, label %54, label %55

54:                                               ; preds = %41
  store i8 1, ptr %5, align 1, !tbaa !11
  br label %55

55:                                               ; preds = %54, %41
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %56

56:                                               ; preds = %55
  %57 = load i32, ptr %6, align 4, !tbaa !9
  %58 = add nsw i32 %57, 1
  store i32 %58, ptr %6, align 4, !tbaa !9
  br label %11, !llvm.loop !14

59:                                               ; preds = %15
  %60 = load i32, ptr %4, align 4, !tbaa !9
  %61 = sext i32 %60 to i64
  %62 = getelementptr inbounds [1000010 x i32], ptr @cnt, i64 0, i64 %61
  %63 = load i32, ptr %62, align 4, !tbaa !9
  %64 = add nsw i32 %63, 1
  store i32 %64, ptr %62, align 4, !tbaa !9
  %65 = load i8, ptr %5, align 1, !tbaa !11, !range !16, !noundef !17
  %66 = trunc i8 %65 to i1
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret i1 %66
}

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #2 align 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 = { mustprogress 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 #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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"bool", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}
!16 = !{i8 0, i8 2}
!17 = !{}


; 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"

@trie = external dso_local local_unnamed_addr global [1000010 x [10 x i32]], align 16
@tot = external dso_local local_unnamed_addr global i32, align 4
@cnt = external dso_local local_unnamed_addr global [1000010 x i32], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z6insertRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(32) %0) local_unnamed_addr #0 {
  %2 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #1
  %3 = trunc i64 %2 to i32
  %4 = icmp sgt i32 %3, 0
  br i1 %4, label %.lr.ph.preheader, label %.._crit_edge_crit_edge

.._crit_edge_crit_edge:                           ; preds = %1
  %.pre = load i32, ptr getelementptr inbounds (i8, ptr @cnt, i64 4), align 4, !tbaa !5
  br label %._crit_edge

.lr.ph.preheader:                                 ; preds = %1
  %wide.trip.count = and i64 %2, 2147483647
  br label %.lr.ph

._crit_edge.loopexit:                             ; preds = %20
  %5 = sext i32 %21 to i64
  br label %._crit_edge

._crit_edge:                                      ; preds = %.._crit_edge_crit_edge, %._crit_edge.loopexit
  %6 = phi i32 [ %.pre, %.._crit_edge_crit_edge ], [ %24, %._crit_edge.loopexit ]
  %.015.lcssa = phi i1 [ false, %.._crit_edge_crit_edge ], [ %spec.select, %._crit_edge.loopexit ]
  %.0.lcssa = phi i64 [ 1, %.._crit_edge_crit_edge ], [ %5, %._crit_edge.loopexit ]
  %7 = getelementptr inbounds [1000010 x i32], ptr @cnt, i64 0, i64 %.0.lcssa
  %8 = add nsw i32 %6, 1
  store i32 %8, ptr %7, align 4, !tbaa !5
  ret i1 %.015.lcssa

.lr.ph:                                           ; preds = %.lr.ph.preheader, %20
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %20 ]
  %.018 = phi i32 [ 1, %.lr.ph.preheader ], [ %21, %20 ]
  %.01516 = phi i1 [ false, %.lr.ph.preheader ], [ %spec.select, %20 ]
  %9 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %indvars.iv)
  %10 = load i8, ptr %9, align 1, !tbaa !9
  %11 = sext i8 %10 to i64
  %12 = add nsw i64 %11, -48
  %13 = sext i32 %.018 to i64
  %14 = getelementptr inbounds [1000010 x [10 x i32]], ptr @trie, i64 0, i64 %13, i64 %12
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = icmp eq i32 %15, 0
  br i1 %16, label %17, label %20

17:                                               ; preds = %.lr.ph
  %18 = load i32, ptr @tot, align 4, !tbaa !5
  %19 = add nsw i32 %18, 1
  store i32 %19, ptr @tot, align 4, !tbaa !5
  store i32 %19, ptr %14, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %17, %.lr.ph
  %21 = phi i32 [ %19, %17 ], [ %15, %.lr.ph ]
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [1000010 x i32], ptr @cnt, i64 0, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !5
  %.not = icmp ne i32 %24, 0
  %spec.select = select i1 %.not, i1 true, i1 %.01516
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge.loopexit, label %.lr.ph, !llvm.loop !10
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #0 align 2

attributes #0 = { mustprogress 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 = { 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++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


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