; LLVM IR from Leet-Us-Code/DSA-A-Z-Practice :: Sid's Levels/Level - 1/DynamicProgramming (CountSubsequencesOfFormA+B+C+)

; 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: mustprogress uwtable
define dso_local noundef i32 @_Z3funRNSt7__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 i32, align 4
  %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) #4
  store i32 0, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  store i32 0, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 0, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  %8 = call noundef double @_ZSt3powIiiEN9__gnu_cxx9__promoteIDTplcvNS1_IT_Xsr3std12__is_integerIS2_EE7__valueEE6__typeELi0EcvNS1_IT0_Xsr3std12__is_integerIS5_EE7__valueEE6__typeELi0EEXsr3std12__is_integerIS8_EE7__valueEE6__typeES2_S5_(i32 noundef 10, i32 noundef 9)
  %9 = fadd double %8, 7.000000e+00
  %10 = fptosi double %9 to i32
  store i32 %10, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %59, %1
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = sext i32 %12 to i64
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %14) #4
  %16 = icmp ult i64 %13, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %62

18:                                               ; preds = %11
  %19 = load ptr, ptr %2, align 8, !tbaa !5
  %20 = load i32, ptr %7, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %19, i64 noundef %21)
  %23 = load i8, ptr %22, align 1, !tbaa !11
  %24 = sext i8 %23 to i32
  %25 = icmp eq i32 %24, 97
  br i1 %25, label %26, label %30

26:                                               ; preds = %18
  %27 = load i32, ptr %3, align 4, !tbaa !9
  %28 = mul nsw i32 2, %27
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %3, align 4, !tbaa !9
  br label %58

30:                                               ; preds = %18
  %31 = load ptr, ptr %2, align 8, !tbaa !5
  %32 = load i32, ptr %7, align 4, !tbaa !9
  %33 = sext i32 %32 to i64
  %34 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %31, i64 noundef %33)
  %35 = load i8, ptr %34, align 1, !tbaa !11
  %36 = sext i8 %35 to i32
  %37 = icmp eq i32 %36, 98
  br i1 %37, label %38, label %43

38:                                               ; preds = %30
  %39 = load i32, ptr %4, align 4, !tbaa !9
  %40 = mul nsw i32 2, %39
  %41 = load i32, ptr %3, align 4, !tbaa !9
  %42 = add nsw i32 %40, %41
  store i32 %42, ptr %4, align 4, !tbaa !9
  br label %57

43:                                               ; preds = %30
  %44 = load ptr, ptr %2, align 8, !tbaa !5
  %45 = load i32, ptr %7, align 4, !tbaa !9
  %46 = sext i32 %45 to i64
  %47 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %44, i64 noundef %46)
  %48 = load i8, ptr %47, align 1, !tbaa !11
  %49 = sext i8 %48 to i32
  %50 = icmp eq i32 %49, 99
  br i1 %50, label %51, label %56

51:                                               ; preds = %43
  %52 = load i32, ptr %5, align 4, !tbaa !9
  %53 = mul nsw i32 2, %52
  %54 = load i32, ptr %4, align 4, !tbaa !9
  %55 = add nsw i32 %53, %54
  store i32 %55, ptr %5, align 4, !tbaa !9
  br label %56

56:                                               ; preds = %51, %43
  br label %57

57:                                               ; preds = %56, %38
  br label %58

58:                                               ; preds = %57, %26
  br label %59

59:                                               ; preds = %58
  %60 = load i32, ptr %7, align 4, !tbaa !9
  %61 = add nsw i32 %60, 1
  store i32 %61, ptr %7, align 4, !tbaa !9
  br label %11, !llvm.loop !12

62:                                               ; preds = %17
  %63 = load i32, ptr %5, align 4, !tbaa !9
  %64 = load i32, ptr %6, align 4, !tbaa !9
  %65 = srem i32 %63, %64
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  ret i32 %65
}

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt3powIiiEN9__gnu_cxx9__promoteIDTplcvNS1_IT_Xsr3std12__is_integerIS2_EE7__valueEE6__typeELi0EcvNS1_IT0_Xsr3std12__is_integerIS5_EE7__valueEE6__typeELi0EEXsr3std12__is_integerIS8_EE7__valueEE6__typeES2_S5_(i32 noundef, i32 noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) #3 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) #3 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 = { inlinehint 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 = { 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 #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 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z3funRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(32) %0) local_unnamed_addr #0 {
  %2 = tail call noundef double @_ZSt3powIiiEN9__gnu_cxx9__promoteIDTplcvNS1_IT_Xsr3std12__is_integerIS2_EE7__valueEE6__typeELi0EcvNS1_IT0_Xsr3std12__is_integerIS5_EE7__valueEE6__typeELi0EEXsr3std12__is_integerIS8_EE7__valueEE6__typeES2_S5_(i32 noundef 10, i32 noundef 9)
  %3 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #2
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %27, %1
  %.016.lcssa = phi i32 [ 0, %1 ], [ %.117, %27 ]
  %4 = fadd double %2, 7.000000e+00
  %5 = fptosi double %4 to i32
  %6 = srem i32 %.016.lcssa, %5
  ret i32 %6

.lr.ph:                                           ; preds = %1, %27
  %indvars.iv = phi i64 [ %indvars.iv.next, %27 ], [ 0, %1 ]
  %.01523 = phi i32 [ %.1, %27 ], [ 0, %1 ]
  %.01622 = phi i32 [ %.117, %27 ], [ 0, %1 ]
  %.01821 = phi i32 [ %.119, %27 ], [ 0, %1 ]
  %7 = 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)
  %8 = load i8, ptr %7, align 1, !tbaa !5
  %9 = icmp eq i8 %8, 97
  br i1 %9, label %10, label %13

10:                                               ; preds = %.lr.ph
  %11 = shl nsw i32 %.01523, 1
  %12 = or disjoint i32 %11, 1
  br label %27

13:                                               ; preds = %.lr.ph
  %14 = 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)
  %15 = load i8, ptr %14, align 1, !tbaa !5
  %16 = icmp eq i8 %15, 98
  br i1 %16, label %17, label %20

17:                                               ; preds = %13
  %18 = shl nsw i32 %.01821, 1
  %19 = add nsw i32 %.01523, %18
  br label %27

20:                                               ; preds = %13
  %21 = 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)
  %22 = load i8, ptr %21, align 1, !tbaa !5
  %23 = icmp eq i8 %22, 99
  br i1 %23, label %24, label %27

24:                                               ; preds = %20
  %25 = shl nsw i32 %.01622, 1
  %26 = add nsw i32 %25, %.01821
  br label %27

27:                                               ; preds = %10, %20, %24, %17
  %.119 = phi i32 [ %.01821, %10 ], [ %19, %17 ], [ %.01821, %24 ], [ %.01821, %20 ]
  %.117 = phi i32 [ %.01622, %10 ], [ %.01622, %17 ], [ %26, %24 ], [ %.01622, %20 ]
  %.1 = phi i32 [ %12, %10 ], [ %.01523, %17 ], [ %.01523, %24 ], [ %.01523, %20 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %28 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #2
  %29 = icmp ugt i64 %28, %indvars.iv.next
  br i1 %29, label %.lr.ph, label %._crit_edge, !llvm.loop !8
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt3powIiiEN9__gnu_cxx9__promoteIDTplcvNS1_IT_Xsr3std12__is_integerIS2_EE7__valueEE6__typeELi0EcvNS1_IT0_Xsr3std12__is_integerIS5_EE7__valueEE6__typeELi0EEXsr3std12__is_integerIS8_EE7__valueEE6__typeES2_S5_(i32 noundef, i32 noundef) local_unnamed_addr #1

; 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 = { inlinehint 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 #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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


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