; LLVM IR from MinhasKamal/AlgorithmImplementations :: others/huffmanAlgorithm/ZipMaker.ll (Z11charCounterPi)

; 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"

%"class.std::basic_ifstream" = type { %"class.std::basic_istream.base", %"class.std::basic_filebuf", %"class.std::basic_ios" }
%"class.std::basic_istream.base" = type { ptr, i64 }
%"class.std::basic_filebuf" = type { %"class.std::basic_streambuf", %union.pthread_mutex_t, %"class.std::__basic_file", i32, %struct.__mbstate_t, %struct.__mbstate_t, %struct.__mbstate_t, ptr, i64, i8, i8, i8, i8, ptr, ptr, i8, ptr, ptr, i64, ptr, ptr }
%"class.std::basic_streambuf" = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, %"class.std::locale" }
%"class.std::locale" = type { ptr }
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }
%"class.std::__basic_file" = type <{ ptr, i8, [7 x i8] }>
%struct.__mbstate_t = type { i32, %union.anon }
%union.anon = type { i32 }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }

@input = external dso_local global %"class.std::basic_ifstream", align 8
@.str.2 = external hidden unnamed_addr constant [27 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [29 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z11charCounterPi(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i8, align 1
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE4openEPKcSt13_Ios_Openmode(ptr noundef nonnull align 8 dereferenceable(256) @input, ptr noundef @.str.2, i32 noundef 8)
  %5 = call noundef zeroext i1 @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE7is_openEv(ptr noundef nonnull align 8 dereferenceable(256) @input)
  br i1 %5, label %8, label %6

6:                                                ; preds = %1
  %7 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  call void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE5closeEv(ptr noundef nonnull align 8 dereferenceable(256) @input)
  br label %47

8:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %18, %8
  %10 = load i32, ptr %3, align 4, !tbaa !9
  %11 = icmp slt i32 %10, 26
  br i1 %11, label %13, label %12

12:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  br label %21

13:                                               ; preds = %9
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = load i32, ptr %3, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds i32, ptr %14, i64 %16
  store i32 0, ptr %17, align 4, !tbaa !9
  br label %18

18:                                               ; preds = %13
  %19 = load i32, ptr %3, align 4, !tbaa !9
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %3, align 4, !tbaa !9
  br label %9, !llvm.loop !11

21:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #4
  %22 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16) @input, ptr noundef nonnull align 1 dereferenceable(1) %4)
  br label %23

23:                                               ; preds = %44, %21
  %24 = load i8, ptr %4, align 1, !tbaa !13
  %25 = sext i8 %24 to i32
  %26 = icmp ne i32 %25, 35
  br i1 %26, label %27, label %46

27:                                               ; preds = %23
  %28 = load i8, ptr %4, align 1, !tbaa !13
  %29 = sext i8 %28 to i32
  %30 = icmp sge i32 %29, 97
  br i1 %30, label %31, label %44

31:                                               ; preds = %27
  %32 = load i8, ptr %4, align 1, !tbaa !13
  %33 = sext i8 %32 to i32
  %34 = icmp slt i32 %33, 123
  br i1 %34, label %35, label %44

35:                                               ; preds = %31
  %36 = load ptr, ptr %2, align 8, !tbaa !5
  %37 = load i8, ptr %4, align 1, !tbaa !13
  %38 = sext i8 %37 to i32
  %39 = sub nsw i32 %38, 97
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds i32, ptr %36, i64 %40
  %42 = load i32, ptr %41, align 4, !tbaa !9
  %43 = add nsw i32 %42, 1
  store i32 %43, ptr %41, align 4, !tbaa !9
  br label %44

44:                                               ; preds = %35, %31, %27
  %45 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16) @input, ptr noundef nonnull align 1 dereferenceable(1) %4)
  br label %23, !llvm.loop !14

46:                                               ; preds = %23
  call void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE5closeEv(ptr noundef nonnull align 8 dereferenceable(256) @input)
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #4
  br label %47

47:                                               ; preds = %46, %6
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE4openEPKcSt13_Ios_Openmode(ptr noundef nonnull align 8 dereferenceable(256), ptr noundef, i32 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef zeroext i1 @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE7is_openEv(ptr noundef nonnull align 8 dereferenceable(256)) #2 align 2

declare i32 @printf(ptr noundef, ...) #3

; Function Attrs: mustprogress uwtable
declare void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE5closeEv(ptr noundef nonnull align 8 dereferenceable(256)) #1 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 1 dereferenceable(1)) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = { "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 #4 = { 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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !12}


; 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"

%"class.std::basic_ifstream" = type { %"class.std::basic_istream.base", %"class.std::basic_filebuf", %"class.std::basic_ios" }
%"class.std::basic_istream.base" = type { ptr, i64 }
%"class.std::basic_filebuf" = type { %"class.std::basic_streambuf", %union.pthread_mutex_t, %"class.std::__basic_file", i32, %struct.__mbstate_t, %struct.__mbstate_t, %struct.__mbstate_t, ptr, i64, i8, i8, i8, i8, ptr, ptr, i8, ptr, ptr, i64, ptr, ptr }
%"class.std::basic_streambuf" = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, %"class.std::locale" }
%"class.std::locale" = type { ptr }
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }
%"class.std::__basic_file" = type <{ ptr, i8, [7 x i8] }>
%struct.__mbstate_t = type { i32, %union.anon }
%union.anon = type { i32 }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }

@input = external dso_local global %"class.std::basic_ifstream", align 8
@.str.2 = external hidden unnamed_addr constant [27 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [29 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z11charCounterPi(ptr nocapture noundef %0) local_unnamed_addr #1 {
  %2 = alloca i8, align 1
  tail call void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE4openEPKcSt13_Ios_Openmode(ptr noundef nonnull align 8 dereferenceable(256) @input, ptr noundef nonnull @.str.2, i32 noundef 8)
  %3 = tail call noundef zeroext i1 @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE7is_openEv(ptr noundef nonnull align 8 dereferenceable(256) @input)
  br i1 %3, label %.preheader.preheader, label %6

.preheader.preheader:                             ; preds = %1
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(104) %0, i8 0, i64 104, i1 false), !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %2) #6
  %4 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16) @input, ptr noundef nonnull align 1 dereferenceable(1) %2)
  %5 = load i8, ptr %2, align 1
  %.not8 = icmp eq i8 %5, 35
  br i1 %.not8, label %._crit_edge, label %.lr.ph

6:                                                ; preds = %1
  %7 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  tail call void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE5closeEv(ptr noundef nonnull align 8 dereferenceable(256) @input)
  br label %18

.lr.ph:                                           ; preds = %.preheader.preheader, %15
  %8 = phi i8 [ %17, %15 ], [ %5, %.preheader.preheader ]
  %9 = add i8 %8, -97
  %or.cond = icmp ult i8 %9, 26
  br i1 %or.cond, label %10, label %15

10:                                               ; preds = %.lr.ph
  %11 = zext nneg i8 %9 to i64
  %12 = getelementptr inbounds i32, ptr %0, i64 %11
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = add nsw i32 %13, 1
  store i32 %14, ptr %12, align 4, !tbaa !5
  br label %15

15:                                               ; preds = %10, %.lr.ph
  %16 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16) @input, ptr noundef nonnull align 1 dereferenceable(1) %2)
  %17 = load i8, ptr %2, align 1
  %.not = icmp eq i8 %17, 35
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %15, %.preheader.preheader
  call void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE5closeEv(ptr noundef nonnull align 8 dereferenceable(256) @input)
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %2) #6
  br label %18

18:                                               ; preds = %._crit_edge, %6
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE4openEPKcSt13_Ios_Openmode(ptr noundef nonnull align 8 dereferenceable(256), ptr noundef, i32 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef zeroext i1 @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE7is_openEv(ptr noundef nonnull align 8 dereferenceable(256)) local_unnamed_addr #2 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare void @_ZNSt14basic_ifstreamIcSt11char_traitsIcEE5closeEv(ptr noundef nonnull align 8 dereferenceable(256)) local_unnamed_addr #1 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #4

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #5

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = { nofree nounwind "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 #4 = { "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 #5 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #6 = { 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopIdiomRecognizePass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass