; LLVM IR from rdguez-mariano/fast_imas_IPOL :: libNumerics/homography.ll (ZNK11libNumerics10Homography7inverseEv)

; 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.libNumerics::Homography" = type { %"class.libNumerics::matrix" }
%"class.libNumerics::matrix" = type { ptr, i32, i32, ptr }

; 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
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZN11libNumerics6matrixIdEaSERKS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

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 nounwind uwtable
declare dso_local void @_ZN11libNumerics6matrixIdED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN11libNumerics10Homography9normalizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN11libNumerics10HomographyD2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK11libNumerics10Homography7inverseEv(ptr dead_on_unwind noalias writable sret(%"class.libNumerics::Homography") align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1) #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i1, align 1
  %6 = alloca %"class.libNumerics::matrix", align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  %9 = load ptr, ptr %4, align 8
  store i1 false, ptr %5, align 1
  call void @_ZN11libNumerics10HomographyC1Ev(ptr noundef nonnull align 8 dereferenceable(24) %0)
  call void @llvm.lifetime.start.p0(i64 24, ptr %6) #4
  %10 = getelementptr inbounds %"class.libNumerics::Homography", ptr %9, i32 0, i32 0
  invoke void @_ZNK11libNumerics6matrixIdE3invEv(ptr dead_on_unwind writable sret(%"class.libNumerics::matrix") align 8 %6, ptr noundef nonnull align 8 dereferenceable(24) %10)
          to label %11 unwind label %17

11:                                               ; preds = %2
  %12 = getelementptr inbounds %"class.libNumerics::Homography", ptr %0, i32 0, i32 0
  %13 = invoke noundef nonnull align 8 dereferenceable(24) ptr @_ZN11libNumerics6matrixIdEaSERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %12, ptr noundef nonnull align 8 dereferenceable(24) %6)
          to label %14 unwind label %21

14:                                               ; preds = %11
  call void @_ZN11libNumerics6matrixIdED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr %6) #4
  invoke void @_ZN11libNumerics10Homography9normalizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0)
          to label %15 unwind label %26

15:                                               ; preds = %14
  store i1 true, ptr %5, align 1
  %16 = load i1, ptr %5, align 1
  br i1 %16, label %31, label %30

17:                                               ; preds = %2
  %18 = landingpad { ptr, i32 }
          cleanup
  %19 = extractvalue { ptr, i32 } %18, 0
  store ptr %19, ptr %7, align 8
  %20 = extractvalue { ptr, i32 } %18, 1
  store i32 %20, ptr %8, align 4
  br label %25

21:                                               ; preds = %11
  %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 @_ZN11libNumerics6matrixIdED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #4
  br label %25

25:                                               ; preds = %21, %17
  call void @llvm.lifetime.end.p0(i64 24, ptr %6) #4
  br label %32

26:                                               ; preds = %14
  %27 = landingpad { ptr, i32 }
          cleanup
  %28 = extractvalue { ptr, i32 } %27, 0
  store ptr %28, ptr %7, align 8
  %29 = extractvalue { ptr, i32 } %27, 1
  store i32 %29, ptr %8, align 4
  br label %32

30:                                               ; preds = %15
  call void @_ZN11libNumerics10HomographyD2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  br label %31

31:                                               ; preds = %30, %15
  ret void

32:                                               ; preds = %26, %25
  call void @_ZN11libNumerics10HomographyD2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  br label %33

33:                                               ; preds = %32
  %34 = load ptr, ptr %7, align 8
  %35 = load i32, ptr %8, align 4
  %36 = insertvalue { ptr, i32 } poison, ptr %34, 0
  %37 = insertvalue { ptr, i32 } %36, i32 %35, 1
  resume { ptr, i32 } %37
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK11libNumerics6matrixIdE3invEv(ptr dead_on_unwind noalias writable sret(%"class.libNumerics::matrix") align 8, ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

declare void @_ZN11libNumerics10HomographyC1Ev(ptr)

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 = { 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 #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"}


; 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.libNumerics::Homography" = type { %"class.libNumerics::matrix" }
%"class.libNumerics::matrix" = type { ptr, i32, i32, ptr }

; 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
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZN11libNumerics6matrixIdEaSERKS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

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 nounwind uwtable
declare dso_local void @_ZN11libNumerics6matrixIdED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN11libNumerics10Homography9normalizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN11libNumerics10HomographyD2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK11libNumerics10Homography7inverseEv(ptr dead_on_unwind noalias writable sret(%"class.libNumerics::Homography") align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1) local_unnamed_addr #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.libNumerics::matrix", align 8
  tail call void @_ZN11libNumerics10HomographyC1Ev(ptr noundef nonnull align 8 dereferenceable(24) %0)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #4
  invoke void @_ZNK11libNumerics6matrixIdE3invEv(ptr dead_on_unwind nonnull writable sret(%"class.libNumerics::matrix") align 8 %3, ptr noundef nonnull align 8 dereferenceable(24) %1)
          to label %4 unwind label %7

4:                                                ; preds = %2
  %5 = invoke noundef nonnull align 8 dereferenceable(24) ptr @_ZN11libNumerics6matrixIdEaSERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %3)
          to label %6 unwind label %9

6:                                                ; preds = %4
  call void @_ZN11libNumerics6matrixIdED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #4
  invoke void @_ZN11libNumerics10Homography9normalizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0)
          to label %14 unwind label %12

7:                                                ; preds = %2
  %8 = landingpad { ptr, i32 }
          cleanup
  br label %11

9:                                                ; preds = %4
  %10 = landingpad { ptr, i32 }
          cleanup
  call void @_ZN11libNumerics6matrixIdED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #4
  br label %11

11:                                               ; preds = %9, %7
  %.pn = phi { ptr, i32 } [ %10, %9 ], [ %8, %7 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #4
  br label %15

12:                                               ; preds = %6
  %13 = landingpad { ptr, i32 }
          cleanup
  br label %15

14:                                               ; preds = %6
  ret void

15:                                               ; preds = %12, %11
  %.pn6 = phi { ptr, i32 } [ %13, %12 ], [ %.pn, %11 ]
  call void @_ZN11libNumerics10HomographyD2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  resume { ptr, i32 } %.pn6
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK11libNumerics6matrixIdE3invEv(ptr dead_on_unwind noalias writable sret(%"class.libNumerics::matrix") align 8, ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

declare void @_ZN11libNumerics10HomographyC1Ev(ptr) local_unnamed_addr

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 = { 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 #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)"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass