; LLVM IR from Muhammad-Magdi/problem-solving :: Matrices.ll (Z6powerIRKSt6vectorIS_IxSaIxEESaIS1_EEx)

; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl_data" = type { ptr, ptr, ptr }

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

declare i32 @__gxx_personality_v0(...)

; 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 dso_local void @_Z8identityi(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8, i32 noundef) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIS_IxSaIxEESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z8multiplyRKSt6vectorIS_IxSaIxEESaIS1_EES5_(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8, ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEaSEOS3_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6powerIRKSt6vectorIS_IxSaIxEESaIS1_EEx(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %2) #1 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i1, align 1
  %8 = alloca %"class.std::vector", align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca %"class.std::vector", align 8
  %12 = alloca %"class.std::vector", align 8
  store ptr %0, ptr %4, align 8
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  store i1 false, ptr %7, align 1
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = call noundef i64 @_ZNKSt6vectorIS_IxSaIxEESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %13) #3
  %15 = trunc i64 %14 to i32
  call void @_Z8identityi(ptr dead_on_unwind writable sret(%"class.std::vector") align 8 %0, i32 noundef %15)
  call void @llvm.lifetime.start.p0(i64 24, ptr %8) #3
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  invoke void @_ZNSt6vectorIS_IxSaIxEESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %8, ptr noundef nonnull align 8 dereferenceable(24) %16)
          to label %17 unwind label %28

17:                                               ; preds = %3
  br label %18

18:                                               ; preds = %37, %17
  %19 = load i64, ptr %6, align 8, !tbaa !9
  %20 = icmp ne i64 %19, 0
  br i1 %20, label %21, label %45

21:                                               ; preds = %18
  %22 = load i64, ptr %6, align 8, !tbaa !9
  %23 = and i64 %22, 1
  %24 = icmp ne i64 %23, 0
  br i1 %24, label %25, label %36

25:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 24, ptr %11) #3
  invoke void @_Z8multiplyRKSt6vectorIS_IxSaIxEESaIS1_EES5_(ptr dead_on_unwind writable sret(%"class.std::vector") align 8 %11, ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %8)
          to label %26 unwind label %32

26:                                               ; preds = %25
  %27 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEaSEOS3_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %11) #3
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %11) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %11) #3
  br label %36

28:                                               ; preds = %3
  %29 = landingpad { ptr, i32 }
          cleanup
  %30 = extractvalue { ptr, i32 } %29, 0
  store ptr %30, ptr %9, align 8
  %31 = extractvalue { ptr, i32 } %29, 1
  store i32 %31, ptr %10, align 4
  br label %48

32:                                               ; preds = %25
  %33 = landingpad { ptr, i32 }
          cleanup
  %34 = extractvalue { ptr, i32 } %33, 0
  store ptr %34, ptr %9, align 8
  %35 = extractvalue { ptr, i32 } %33, 1
  store i32 %35, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 24, ptr %11) #3
  br label %47

36:                                               ; preds = %26, %21
  call void @llvm.lifetime.start.p0(i64 24, ptr %12) #3
  invoke void @_Z8multiplyRKSt6vectorIS_IxSaIxEESaIS1_EES5_(ptr dead_on_unwind writable sret(%"class.std::vector") align 8 %12, ptr noundef nonnull align 8 dereferenceable(24) %8, ptr noundef nonnull align 8 dereferenceable(24) %8)
          to label %37 unwind label %41

37:                                               ; preds = %36
  %38 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEaSEOS3_(ptr noundef nonnull align 8 dereferenceable(24) %8, ptr noundef nonnull align 8 dereferenceable(24) %12) #3
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %12) #3
  %39 = load i64, ptr %6, align 8, !tbaa !9
  %40 = ashr i64 %39, 1
  store i64 %40, ptr %6, align 8, !tbaa !9
  br label %18, !llvm.loop !11

41:                                               ; preds = %36
  %42 = landingpad { ptr, i32 }
          cleanup
  %43 = extractvalue { ptr, i32 } %42, 0
  store ptr %43, ptr %9, align 8
  %44 = extractvalue { ptr, i32 } %42, 1
  store i32 %44, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 24, ptr %12) #3
  br label %47

45:                                               ; preds = %18
  store i1 true, ptr %7, align 1
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %8) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %8) #3
  %46 = load i1, ptr %7, align 1
  br i1 %46, label %50, label %49

47:                                               ; preds = %41, %32
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %8) #3
  br label %48

48:                                               ; preds = %47, %28
  call void @llvm.lifetime.end.p0(i64 24, ptr %8) #3
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  br label %51

49:                                               ; preds = %45
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  br label %50

50:                                               ; preds = %49, %45
  ret void

51:                                               ; preds = %48
  %52 = load ptr, ptr %9, align 8
  %53 = load i32, ptr %10, align 4
  %54 = insertvalue { ptr, i32 } poison, ptr %52, 0
  %55 = insertvalue { ptr, i32 } %54, i32 %53, 1
  resume { ptr, i32 } %55
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IxSaIxEESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

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 = { 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 = !{!"long long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl_data" = type { ptr, ptr, ptr }

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

declare i32 @__gxx_personality_v0(...)

; 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 dso_local void @_Z8identityi(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8, i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIS_IxSaIxEESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z8multiplyRKSt6vectorIS_IxSaIxEESaIS1_EES5_(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8, ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEaSEOS3_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6powerIRKSt6vectorIS_IxSaIxEESaIS1_EEx(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %2) local_unnamed_addr #1 personality ptr @__gxx_personality_v0 {
  %4 = alloca %"class.std::vector", align 8
  %5 = alloca %"class.std::vector", align 8
  %6 = alloca %"class.std::vector", align 8
  %7 = tail call noundef i64 @_ZNKSt6vectorIS_IxSaIxEESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #3
  %8 = trunc i64 %7 to i32
  tail call void @_Z8identityi(ptr dead_on_unwind writable sret(%"class.std::vector") align 8 %0, i32 noundef %8)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %4) #3
  invoke void @_ZNSt6vectorIS_IxSaIxEESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %4, ptr noundef nonnull align 8 dereferenceable(24) %1)
          to label %.preheader unwind label %13

.preheader:                                       ; preds = %3
  %.not13 = icmp eq i64 %2, 0
  br i1 %.not13, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %18
  %.0914 = phi i64 [ %20, %18 ], [ %2, %.preheader ]
  %9 = and i64 %.0914, 1
  %.not10 = icmp eq i64 %9, 0
  br i1 %.not10, label %17, label %10

10:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %5) #3
  invoke void @_Z8multiplyRKSt6vectorIS_IxSaIxEESaIS1_EES5_(ptr dead_on_unwind nonnull writable sret(%"class.std::vector") align 8 %5, ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %4)
          to label %11 unwind label %15

11:                                               ; preds = %10
  %12 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEaSEOS3_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %5) #3
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %5) #3
  br label %17

13:                                               ; preds = %3
  %14 = landingpad { ptr, i32 }
          cleanup
  br label %24

15:                                               ; preds = %10
  %16 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %5) #3
  br label %23

17:                                               ; preds = %11, %.lr.ph
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %6) #3
  invoke void @_Z8multiplyRKSt6vectorIS_IxSaIxEESaIS1_EES5_(ptr dead_on_unwind nonnull writable sret(%"class.std::vector") align 8 %6, ptr noundef nonnull align 8 dereferenceable(24) %4, ptr noundef nonnull align 8 dereferenceable(24) %4)
          to label %18 unwind label %21

18:                                               ; preds = %17
  %19 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEaSEOS3_(ptr noundef nonnull align 8 dereferenceable(24) %4, ptr noundef nonnull align 8 dereferenceable(24) %6) #3
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %6) #3
  %20 = ashr i64 %.0914, 1
  %.not = icmp ult i64 %.0914, 2
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

21:                                               ; preds = %17
  %22 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %6) #3
  br label %23

._crit_edge:                                      ; preds = %18, %.preheader
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %4) #3
  ret void

23:                                               ; preds = %21, %15
  %.pn = phi { ptr, i32 } [ %22, %21 ], [ %16, %15 ]
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #3
  br label %24

24:                                               ; preds = %23, %13
  %.pn.pn = phi { ptr, i32 } [ %.pn, %23 ], [ %14, %13 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %4) #3
  call void @_ZNSt6vectorIS_IxSaIxEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  resume { ptr, i32 } %.pn.pn
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IxSaIxEESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

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 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass