; LLVM IR from davidomanovic/CFD-FlowSolver :: src/Vector.ll (ZNK6VectormiERKS_)

; 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.Vector = type { i64, %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@_ZTISt16invalid_argument = external constant ptr
@.str.2 = external hidden unnamed_addr constant [45 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

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 noundef nonnull align 8 dereferenceable(8) ptr @_ZN6VectorixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #1 align 2

declare ptr @__cxa_allocate_exception(i64)

declare void @__cxa_free_exception(ptr)

declare void @__cxa_throw(ptr, ptr, ptr)

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNK6VectorixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

declare void @_ZNSt16invalid_argumentC1EPKc(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) unnamed_addr #3

; Function Attrs: nounwind
declare void @_ZNSt16invalid_argumentD1Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #4

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN6VectorD2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #5 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK6VectormiERKS_(ptr dead_on_unwind noalias writable sret(%class.Vector) align 8 %0, ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef nonnull align 8 dereferenceable(32) %2) #1 align 2 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i1, align 1
  %10 = alloca i64, align 8
  store ptr %0, ptr %4, align 8
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  %11 = load ptr, ptr %5, align 8
  %12 = getelementptr inbounds %class.Vector, ptr %11, i32 0, i32 0
  %13 = load i64, ptr %12, align 8, !tbaa !9
  %14 = load ptr, ptr %6, align 8, !tbaa !5
  %15 = getelementptr inbounds %class.Vector, ptr %14, i32 0, i32 0
  %16 = load i64, ptr %15, align 8, !tbaa !9
  %17 = icmp ne i64 %13, %16
  br i1 %17, label %18, label %25

18:                                               ; preds = %3
  %19 = call ptr @__cxa_allocate_exception(i64 16) #6
  invoke void @_ZNSt16invalid_argumentC1EPKc(ptr noundef nonnull align 8 dereferenceable(16) %19, ptr noundef @.str.2)
          to label %20 unwind label %21

20:                                               ; preds = %18
  call void @__cxa_throw(ptr %19, ptr @_ZTISt16invalid_argument, ptr @_ZNSt16invalid_argumentD1Ev) #7
  unreachable

21:                                               ; preds = %18
  %22 = landingpad { ptr, i32 }
          cleanup
  %23 = extractvalue { ptr, i32 } %22, 0
  store ptr %23, ptr %7, align 8
  %24 = extractvalue { ptr, i32 } %22, 1
  store i32 %24, ptr %8, align 4
  call void @__cxa_free_exception(ptr %19) #6
  br label %59

25:                                               ; preds = %3
  store i1 false, ptr %9, align 1
  %26 = getelementptr inbounds %class.Vector, ptr %11, i32 0, i32 0
  %27 = load i64, ptr %26, align 8, !tbaa !9
  call void @_ZN6VectorC1Em(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %27)
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #6
  store i64 0, ptr %10, align 8, !tbaa !16
  br label %28

28:                                               ; preds = %48, %25
  %29 = load i64, ptr %10, align 8, !tbaa !16
  %30 = getelementptr inbounds %class.Vector, ptr %11, i32 0, i32 0
  %31 = load i64, ptr %30, align 8, !tbaa !9
  %32 = icmp ult i64 %29, %31
  br i1 %32, label %34, label %33

33:                                               ; preds = %28
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #6
  br label %55

34:                                               ; preds = %28
  %35 = getelementptr inbounds %class.Vector, ptr %11, i32 0, i32 1
  %36 = load i64, ptr %10, align 8, !tbaa !16
  %37 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %35, i64 noundef %36) #6
  %38 = load double, ptr %37, align 8, !tbaa !17
  %39 = load ptr, ptr %6, align 8, !tbaa !5
  %40 = load i64, ptr %10, align 8, !tbaa !16
  %41 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNK6VectorixEm(ptr noundef nonnull align 8 dereferenceable(32) %39, i64 noundef %40)
          to label %42 unwind label %51

42:                                               ; preds = %34
  %43 = load double, ptr %41, align 8, !tbaa !17
  %44 = fsub double %38, %43
  %45 = load i64, ptr %10, align 8, !tbaa !16
  %46 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZN6VectorixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %45)
          to label %47 unwind label %51

47:                                               ; preds = %42
  store double %44, ptr %46, align 8, !tbaa !17
  br label %48

48:                                               ; preds = %47
  %49 = load i64, ptr %10, align 8, !tbaa !16
  %50 = add i64 %49, 1
  store i64 %50, ptr %10, align 8, !tbaa !16
  br label %28, !llvm.loop !19

51:                                               ; preds = %42, %34
  %52 = landingpad { ptr, i32 }
          cleanup
  %53 = extractvalue { ptr, i32 } %52, 0
  store ptr %53, ptr %7, align 8
  %54 = extractvalue { ptr, i32 } %52, 1
  store i32 %54, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #6
  call void @_ZN6VectorD2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) #6
  br label %59

55:                                               ; preds = %33
  store i1 true, ptr %9, align 1
  %56 = load i1, ptr %9, align 1
  br i1 %56, label %58, label %57

57:                                               ; preds = %55
  call void @_ZN6VectorD2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) #6
  br label %58

58:                                               ; preds = %57, %55
  ret void

59:                                               ; preds = %51, %21
  %60 = load ptr, ptr %7, align 8
  %61 = load i32, ptr %8, align 4
  %62 = insertvalue { ptr, i32 } poison, ptr %60, 0
  %63 = insertvalue { ptr, i32 } %62, i32 %61, 1
  resume { ptr, i32 } %63
}

declare void @_ZN6VectorC1Em(ptr, i64)

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 "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 = { 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 #6 = { nounwind }
attributes #7 = { noreturn }

!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, !11, i64 0}
!10 = !{!"_ZTS6Vector", !11, i64 0, !12, i64 8}
!11 = !{!"long", !7, i64 0}
!12 = !{!"_ZTSSt6vectorIdSaIdEE", !13, i64 0}
!13 = !{!"_ZTSSt12_Vector_baseIdSaIdEE", !14, i64 0}
!14 = !{!"_ZTSNSt12_Vector_baseIdSaIdEE12_Vector_implE", !15, i64 0}
!15 = !{!"_ZTSNSt12_Vector_baseIdSaIdEE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!16 = !{!11, !11, i64 0}
!17 = !{!18, !18, i64 0}
!18 = !{!"double", !7, i64 0}
!19 = distinct !{!19, !20}
!20 = !{!"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.Vector = type { i64, %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@_ZTISt16invalid_argument = external constant ptr
@.str.2 = external hidden unnamed_addr constant [45 x i8], align 1

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN6VectorixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #0 align 2

declare ptr @__cxa_allocate_exception(i64) local_unnamed_addr

declare void @__cxa_free_exception(ptr) local_unnamed_addr

declare void @__cxa_throw(ptr, ptr, ptr) local_unnamed_addr

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNK6VectorixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

declare void @_ZNSt16invalid_argumentC1EPKc(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) unnamed_addr #2

; Function Attrs: nounwind
declare void @_ZNSt16invalid_argumentD1Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN6VectorD2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK6VectormiERKS_(ptr dead_on_unwind noalias writable sret(%class.Vector) align 8 %0, ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef nonnull align 8 dereferenceable(32) %2) local_unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %4 = load i64, ptr %1, align 8, !tbaa !5
  %5 = load i64, ptr %2, align 8, !tbaa !5
  %.not = icmp eq i64 %4, %5
  br i1 %.not, label %11, label %6

6:                                                ; preds = %3
  %7 = tail call ptr @__cxa_allocate_exception(i64 16) #5
  invoke void @_ZNSt16invalid_argumentC1EPKc(ptr noundef nonnull align 8 dereferenceable(16) %7, ptr noundef nonnull @.str.2)
          to label %8 unwind label %9

8:                                                ; preds = %6
  tail call void @__cxa_throw(ptr nonnull %7, ptr nonnull @_ZTISt16invalid_argument, ptr nonnull @_ZNSt16invalid_argumentD1Ev) #6
  unreachable

9:                                                ; preds = %6
  %10 = landingpad { ptr, i32 }
          cleanup
  tail call void @__cxa_free_exception(ptr %7) #5
  br label %28

11:                                               ; preds = %3
  tail call void @_ZN6VectorC1Em(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %4)
  %12 = load i64, ptr %1, align 8, !tbaa !5
  %.not15 = icmp eq i64 %12, 0
  br i1 %.not15, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %11
  %13 = getelementptr inbounds i8, ptr %1, i64 8
  br label %14

14:                                               ; preds = %.lr.ph, %21
  %.014 = phi i64 [ 0, %.lr.ph ], [ %23, %21 ]
  %15 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %13, i64 noundef %.014) #5
  %16 = load double, ptr %15, align 8, !tbaa !15
  %17 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNK6VectorixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %.014)
          to label %18 unwind label %26

18:                                               ; preds = %14
  %19 = load double, ptr %17, align 8, !tbaa !15
  %20 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZN6VectorixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %.014)
          to label %21 unwind label %26

21:                                               ; preds = %18
  %22 = fsub double %16, %19
  store double %22, ptr %20, align 8, !tbaa !15
  %23 = add nuw i64 %.014, 1
  %24 = load i64, ptr %1, align 8, !tbaa !5
  %25 = icmp ult i64 %23, %24
  br i1 %25, label %14, label %._crit_edge, !llvm.loop !17

26:                                               ; preds = %18, %14
  %27 = landingpad { ptr, i32 }
          cleanup
  tail call void @_ZN6VectorD2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) #5
  br label %28

._crit_edge:                                      ; preds = %21, %11
  ret void

28:                                               ; preds = %26, %9
  %.pn = phi { ptr, i32 } [ %10, %9 ], [ %27, %26 ]
  resume { ptr, i32 } %.pn
}

declare void @_ZN6VectorC1Em(ptr, i64) local_unnamed_addr

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 = { 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 = { "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 "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 = { 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 #5 = { nounwind }
attributes #6 = { noreturn }

!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, !7, i64 0}
!6 = !{!"_ZTS6Vector", !7, i64 0, !10, i64 8}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTSSt6vectorIdSaIdEE", !11, i64 0}
!11 = !{!"_ZTSSt12_Vector_baseIdSaIdEE", !12, i64 0}
!12 = !{!"_ZTSNSt12_Vector_baseIdSaIdEE12_Vector_implE", !13, i64 0}
!13 = !{!"_ZTSNSt12_Vector_baseIdSaIdEE17_Vector_impl_dataE", !14, i64 0, !14, i64 8, !14, i64 16}
!14 = !{!"any pointer", !8, i64 0}
!15 = !{!16, !16, i64 0}
!16 = !{!"double", !8, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}


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