; LLVM IR from moarseniy/CudaFEMproject :: deprecated/Linal2/src/Linal2.ll (ZN6Matrix10DifferenceERS_)

; 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_ostream" = type { ptr, %"class.std::basic_ios" }
%"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 }
%"class.std::locale" = type { ptr }
%class.Matrix = type { i32, i32, i8, i8, ptr }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.23 = external hidden unnamed_addr constant [44 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #1

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #1

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZN6MatrixclEii(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef, i32 noundef) #3 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6Matrix10DifferenceERS_(ptr dead_on_unwind noalias writable sret(%class.Matrix) align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2) #2 align 2 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i1, align 1
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  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
  %13 = load ptr, ptr %5, align 8
  store i1 false, ptr %7, align 1
  %14 = load ptr, ptr %6, align 8, !tbaa !5
  %15 = getelementptr inbounds %class.Matrix, ptr %14, i32 0, i32 0
  %16 = load i32, ptr %15, align 8, !tbaa !9
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = getelementptr inbounds %class.Matrix, ptr %17, i32 0, i32 1
  %19 = load i32, ptr %18, align 4, !tbaa !13
  call void @_ZN6MatrixC1Eii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %16, i32 noundef %19)
  %20 = getelementptr inbounds %class.Matrix, ptr %13, i32 0, i32 0
  %21 = load i32, ptr %20, align 8, !tbaa !9
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = getelementptr inbounds %class.Matrix, ptr %22, i32 0, i32 0
  %24 = load i32, ptr %23, align 8, !tbaa !9
  %25 = icmp eq i32 %21, %24
  br i1 %25, label %33, label %26

26:                                               ; preds = %3
  %27 = getelementptr inbounds %class.Matrix, ptr %13, i32 0, i32 1
  %28 = load i32, ptr %27, align 4, !tbaa !13
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = getelementptr inbounds %class.Matrix, ptr %29, i32 0, i32 1
  %31 = load i32, ptr %30, align 4, !tbaa !13
  %32 = icmp eq i32 %28, %31
  br i1 %32, label %33, label %76

33:                                               ; preds = %26, %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 0, ptr %8, align 4, !tbaa !14
  br label %34

34:                                               ; preds = %72, %33
  %35 = load i32, ptr %8, align 4, !tbaa !14
  %36 = getelementptr inbounds %class.Matrix, ptr %0, i32 0, i32 0
  %37 = load i32, ptr %36, align 8, !tbaa !9
  %38 = icmp slt i32 %35, %37
  br i1 %38, label %40, label %39

39:                                               ; preds = %34
  store i32 2, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %75

40:                                               ; preds = %34
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #4
  store i32 0, ptr %10, align 4, !tbaa !14
  br label %41

41:                                               ; preds = %68, %40
  %42 = load i32, ptr %10, align 4, !tbaa !14
  %43 = getelementptr inbounds %class.Matrix, ptr %0, i32 0, i32 1
  %44 = load i32, ptr %43, align 4, !tbaa !13
  %45 = icmp slt i32 %42, %44
  br i1 %45, label %47, label %46

46:                                               ; preds = %41
  store i32 5, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  br label %71

47:                                               ; preds = %41
  %48 = getelementptr inbounds %class.Matrix, ptr %13, i32 0, i32 4
  %49 = load ptr, ptr %48, align 8, !tbaa !15
  %50 = load i32, ptr %10, align 4, !tbaa !14
  %51 = load i32, ptr %8, align 4, !tbaa !14
  %52 = getelementptr inbounds %class.Matrix, ptr %13, i32 0, i32 1
  %53 = load i32, ptr %52, align 4, !tbaa !13
  %54 = mul nsw i32 %51, %53
  %55 = add nsw i32 %50, %54
  %56 = sext i32 %55 to i64
  %57 = getelementptr inbounds float, ptr %49, i64 %56
  %58 = load float, ptr %57, align 4, !tbaa !16
  %59 = load ptr, ptr %6, align 8, !tbaa !5
  %60 = load i32, ptr %8, align 4, !tbaa !14
  %61 = load i32, ptr %10, align 4, !tbaa !14
  %62 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZN6MatrixclEii(ptr noundef nonnull align 8 dereferenceable(24) %59, i32 noundef %60, i32 noundef %61)
  %63 = load float, ptr %62, align 4, !tbaa !16
  %64 = fsub float %58, %63
  %65 = load i32, ptr %8, align 4, !tbaa !14
  %66 = load i32, ptr %10, align 4, !tbaa !14
  %67 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZN6MatrixclEii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %65, i32 noundef %66)
  store float %64, ptr %67, align 4, !tbaa !16
  br label %68

68:                                               ; preds = %47
  %69 = load i32, ptr %10, align 4, !tbaa !14
  %70 = add nsw i32 %69, 1
  store i32 %70, ptr %10, align 4, !tbaa !14
  br label %41, !llvm.loop !18

71:                                               ; preds = %46
  br label %72

72:                                               ; preds = %71
  %73 = load i32, ptr %8, align 4, !tbaa !14
  %74 = add nsw i32 %73, 1
  store i32 %74, ptr %8, align 4, !tbaa !14
  br label %34, !llvm.loop !20

75:                                               ; preds = %39
  br label %85

76:                                               ; preds = %26
  %77 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.23)
          to label %78 unwind label %81

78:                                               ; preds = %76
  %79 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %77, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %80 unwind label %81

80:                                               ; preds = %78
  br label %85

81:                                               ; preds = %78, %76
  %82 = landingpad { ptr, i32 }
          cleanup
  %83 = extractvalue { ptr, i32 } %82, 0
  store ptr %83, ptr %11, align 8
  %84 = extractvalue { ptr, i32 } %82, 1
  store i32 %84, ptr %12, align 4
  call void @_ZN6MatrixD1Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  br label %89

85:                                               ; preds = %80, %75
  store i1 true, ptr %7, align 1
  store i32 1, ptr %9, align 4
  %86 = load i1, ptr %7, align 1
  br i1 %86, label %88, label %87

87:                                               ; preds = %85
  call void @_ZN6MatrixD1Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  br label %88

88:                                               ; preds = %87, %85
  ret void

89:                                               ; preds = %81
  %90 = load ptr, ptr %11, align 8
  %91 = load i32, ptr %12, align 4
  %92 = insertvalue { ptr, i32 } poison, ptr %90, 0
  %93 = insertvalue { ptr, i32 } %92, i32 %91, 1
  resume { ptr, i32 } %93
}

declare void @_ZN6MatrixC1Eii(ptr, i32, i32)

declare void @_ZN6MatrixD1Ev(ptr)

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint 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 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, !11, i64 0}
!10 = !{!"_ZTS6Matrix", !11, i64 0, !11, i64 4, !12, i64 8, !12, i64 9, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!"bool", !7, i64 0}
!13 = !{!10, !11, i64 4}
!14 = !{!11, !11, i64 0}
!15 = !{!10, !6, i64 16}
!16 = !{!17, !17, i64 0}
!17 = !{!"float", !7, i64 0}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.mustprogress"}
!20 = distinct !{!20, !19}


; 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_ostream" = type { ptr, %"class.std::basic_ios" }
%"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 }
%"class.std::locale" = type { ptr }
%class.Matrix = type { i32, i32, i8, i8, ptr }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.23 = external hidden unnamed_addr constant [44 x i8], align 1

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #0

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZN6MatrixclEii(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef, i32 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6Matrix10DifferenceERS_(ptr dead_on_unwind noalias writable sret(%class.Matrix) align 8 %0, ptr nocapture noundef nonnull readonly align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2) local_unnamed_addr #1 align 2 personality ptr @__gxx_personality_v0 {
  %4 = load i32, ptr %2, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %2, i64 4
  %6 = load i32, ptr %5, align 4, !tbaa !12
  tail call void @_ZN6MatrixC1Eii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %4, i32 noundef %6)
  %7 = load i32, ptr %1, align 8, !tbaa !5
  %8 = load i32, ptr %2, align 8, !tbaa !5
  %9 = icmp eq i32 %7, %8
  br i1 %9, label %15, label %10

10:                                               ; preds = %3
  %11 = getelementptr inbounds i8, ptr %1, i64 4
  %12 = load i32, ptr %11, align 4, !tbaa !12
  %13 = load i32, ptr %5, align 4, !tbaa !12
  %14 = icmp eq i32 %12, %13
  br i1 %14, label %15, label %44

15:                                               ; preds = %10, %3
  %16 = load i32, ptr %0, align 8, !tbaa !5
  %17 = icmp sgt i32 %16, 0
  br i1 %17, label %.preheader.lr.ph, label %.loopexit

.preheader.lr.ph:                                 ; preds = %15
  %18 = getelementptr inbounds i8, ptr %0, i64 4
  %19 = getelementptr inbounds i8, ptr %1, i64 16
  %20 = getelementptr inbounds i8, ptr %1, i64 4
  %21 = load i32, ptr %18, align 4, !tbaa !12
  %22 = icmp sgt i32 %21, 0
  br i1 %22, label %.preheader, label %.loopexit

.preheader:                                       ; preds = %.preheader.lr.ph, %._crit_edge
  %23 = phi i32 [ %26, %._crit_edge ], [ %16, %.preheader.lr.ph ]
  %24 = phi i32 [ %27, %._crit_edge ], [ %21, %.preheader.lr.ph ]
  %.020 = phi i32 [ %28, %._crit_edge ], [ 0, %.preheader.lr.ph ]
  %25 = icmp sgt i32 %24, 0
  br i1 %25, label %.lr.ph, label %._crit_edge

._crit_edge.loopexit:                             ; preds = %.lr.ph
  %.pre = load i32, ptr %0, align 8, !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %.preheader
  %26 = phi i32 [ %.pre, %._crit_edge.loopexit ], [ %23, %.preheader ]
  %27 = phi i32 [ %42, %._crit_edge.loopexit ], [ %24, %.preheader ]
  %28 = add nuw nsw i32 %.020, 1
  %29 = icmp slt i32 %28, %26
  br i1 %29, label %.preheader, label %.loopexit, !llvm.loop !13

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %.01819 = phi i32 [ %41, %.lr.ph ], [ 0, %.preheader ]
  %30 = load ptr, ptr %19, align 8, !tbaa !16
  %31 = load i32, ptr %20, align 4, !tbaa !12
  %32 = mul nsw i32 %31, %.020
  %33 = add nsw i32 %32, %.01819
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds float, ptr %30, i64 %34
  %36 = load float, ptr %35, align 4, !tbaa !17
  %37 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZN6MatrixclEii(ptr noundef nonnull align 8 dereferenceable(24) %2, i32 noundef %.020, i32 noundef %.01819)
  %38 = load float, ptr %37, align 4, !tbaa !17
  %39 = fsub float %36, %38
  %40 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZN6MatrixclEii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %.020, i32 noundef %.01819)
  store float %39, ptr %40, align 4, !tbaa !17
  %41 = add nuw nsw i32 %.01819, 1
  %42 = load i32, ptr %18, align 4, !tbaa !12
  %43 = icmp slt i32 %41, %42
  br i1 %43, label %.lr.ph, label %._crit_edge.loopexit, !llvm.loop !19

44:                                               ; preds = %10
  %45 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.23)
          to label %46 unwind label %48

46:                                               ; preds = %44
  %47 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %45, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %.loopexit unwind label %48

48:                                               ; preds = %46, %44
  %49 = landingpad { ptr, i32 }
          cleanup
  tail call void @_ZN6MatrixD1Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  resume { ptr, i32 } %49

.loopexit:                                        ; preds = %._crit_edge, %.preheader.lr.ph, %15, %46
  ret void
}

declare void @_ZN6MatrixC1Eii(ptr, i32, i32) local_unnamed_addr

declare void @_ZN6MatrixD1Ev(ptr) local_unnamed_addr

attributes #0 = { inlinehint 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 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, !7, i64 0}
!6 = !{!"_ZTS6Matrix", !7, i64 0, !7, i64 4, !10, i64 8, !10, i64 9, !11, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"bool", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!6, !7, i64 4}
!13 = distinct !{!13, !14, !15}
!14 = !{!"llvm.loop.mustprogress"}
!15 = !{!"llvm.loop.unswitch.partial.disable"}
!16 = !{!6, !11, i64 16}
!17 = !{!18, !18, i64 0}
!18 = !{!"float", !8, i64 0}
!19 = distinct !{!19, !14}


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