; LLVM IR from sp-nitech/SPTK :: src/math/symmetric_matrix.ll (ZN4sptk15SymmetricMatrix6ResizeEi)

; 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.sptk::SymmetricMatrix" = type { ptr, i32, %"class.std::vector", %"class.std::vector.0" }
%"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 }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = 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 }

; 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: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIdSaIdEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIPdSaIS0_EE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIPdSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4sptk15SymmetricMatrix6ResizeEi(ptr noundef nonnull align 8 dereferenceable(64) %0, i32 noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %7 = load ptr, ptr %3, align 8
  %8 = load i32, ptr %4, align 4, !tbaa !9
  %9 = icmp slt i32 %8, 0
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  br label %13

11:                                               ; preds = %2
  %12 = load i32, ptr %4, align 4, !tbaa !9
  br label %13

13:                                               ; preds = %11, %10
  %14 = phi i32 [ 0, %10 ], [ %12, %11 ]
  %15 = getelementptr inbounds %"class.sptk::SymmetricMatrix", ptr %7, i32 0, i32 1
  store i32 %14, ptr %15, align 8, !tbaa !11
  %16 = getelementptr inbounds %"class.sptk::SymmetricMatrix", ptr %7, i32 0, i32 2
  %17 = getelementptr inbounds %"class.sptk::SymmetricMatrix", ptr %7, i32 0, i32 1
  %18 = load i32, ptr %17, align 8, !tbaa !11
  %19 = getelementptr inbounds %"class.sptk::SymmetricMatrix", ptr %7, i32 0, i32 1
  %20 = load i32, ptr %19, align 8, !tbaa !11
  %21 = add nsw i32 %20, 1
  %22 = mul nsw i32 %18, %21
  %23 = sdiv i32 %22, 2
  %24 = sext i32 %23 to i64
  call void @_ZNSt6vectorIdSaIdEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) %16, i64 noundef %24)
  %25 = getelementptr inbounds %"class.sptk::SymmetricMatrix", ptr %7, i32 0, i32 3
  %26 = getelementptr inbounds %"class.sptk::SymmetricMatrix", ptr %7, i32 0, i32 1
  %27 = load i32, ptr %26, align 8, !tbaa !11
  %28 = sext i32 %27 to i64
  call void @_ZNSt6vectorIPdSaIS0_EE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) %25, i64 noundef %28)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %29

29:                                               ; preds = %44, %13
  %30 = load i32, ptr %5, align 4, !tbaa !9
  %31 = getelementptr inbounds %"class.sptk::SymmetricMatrix", ptr %7, i32 0, i32 1
  %32 = load i32, ptr %31, align 8, !tbaa !11
  %33 = icmp slt i32 %30, %32
  br i1 %33, label %35, label %34

34:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %50

35:                                               ; preds = %29
  %36 = getelementptr inbounds %"class.sptk::SymmetricMatrix", ptr %7, i32 0, i32 2
  %37 = load i32, ptr %6, align 4, !tbaa !9
  %38 = sext i32 %37 to i64
  %39 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %36, i64 noundef %38) #3
  %40 = getelementptr inbounds %"class.sptk::SymmetricMatrix", ptr %7, i32 0, i32 3
  %41 = load i32, ptr %5, align 4, !tbaa !9
  %42 = sext i32 %41 to i64
  %43 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIPdSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %40, i64 noundef %42) #3
  store ptr %39, ptr %43, align 8, !tbaa !5
  br label %44

44:                                               ; preds = %35
  %45 = load i32, ptr %5, align 4, !tbaa !9
  %46 = add nsw i32 %45, 1
  store i32 %46, ptr %5, align 4, !tbaa !9
  %47 = load i32, ptr %5, align 4, !tbaa !9
  %48 = load i32, ptr %6, align 4, !tbaa !9
  %49 = add nsw i32 %48, %47
  store i32 %49, ptr %6, align 4, !tbaa !9
  br label %29, !llvm.loop !21

50:                                               ; preds = %34
  ret void
}

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 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 8}
!12 = !{!"_ZTSN4sptk15SymmetricMatrixE", !10, i64 8, !13, i64 16, !17, i64 40}
!13 = !{!"_ZTSSt6vectorIdSaIdEE", !14, i64 0}
!14 = !{!"_ZTSSt12_Vector_baseIdSaIdEE", !15, i64 0}
!15 = !{!"_ZTSNSt12_Vector_baseIdSaIdEE12_Vector_implE", !16, i64 0}
!16 = !{!"_ZTSNSt12_Vector_baseIdSaIdEE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!17 = !{!"_ZTSSt6vectorIPdSaIS0_EE", !18, i64 0}
!18 = !{!"_ZTSSt12_Vector_baseIPdSaIS0_EE", !19, i64 0}
!19 = !{!"_ZTSNSt12_Vector_baseIPdSaIS0_EE12_Vector_implE", !20, i64 0}
!20 = !{!"_ZTSNSt12_Vector_baseIPdSaIS0_EE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!21 = distinct !{!21, !22}
!22 = !{!"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 uwtable
declare dso_local void @_ZNSt6vectorIdSaIdEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIPdSaIS0_EE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIPdSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4sptk15SymmetricMatrix6ResizeEi(ptr noundef nonnull align 8 dereferenceable(64) %0, i32 noundef %1) local_unnamed_addr #0 align 2 {
  %3 = tail call i32 @llvm.smax.i32(i32 %1, i32 0)
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  store i32 %3, ptr %4, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  %6 = add nuw nsw i32 %3, 1
  %7 = mul nuw nsw i32 %6, %3
  %8 = lshr i32 %7, 1
  %9 = zext nneg i32 %8 to i64
  tail call void @_ZNSt6vectorIdSaIdEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %9)
  %10 = getelementptr inbounds i8, ptr %0, i64 40
  %11 = load i32, ptr %4, align 8, !tbaa !5
  %12 = sext i32 %11 to i64
  tail call void @_ZNSt6vectorIPdSaIS0_EE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) %10, i64 noundef %12)
  %13 = load i32, ptr %4, align 8, !tbaa !5
  %14 = icmp sgt i32 %13, 0
  br i1 %14, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %2
  ret void

.lr.ph:                                           ; preds = %2, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %2 ]
  %.010 = phi i32 [ %19, %.lr.ph ], [ 0, %2 ]
  %15 = zext nneg i32 %.010 to i64
  %16 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %15) #3
  %17 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIPdSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %10, i64 noundef %indvars.iv) #3
  store ptr %16, ptr %17, align 8, !tbaa !19
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %18 = trunc nuw nsw i64 %indvars.iv.next to i32
  %19 = add nuw nsw i32 %.010, %18
  %20 = load i32, ptr %4, align 8, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = icmp slt i64 %indvars.iv.next, %21
  br i1 %22, label %.lr.ph, label %._crit_edge, !llvm.loop !20
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #2

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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 8}
!6 = !{!"_ZTSN4sptk15SymmetricMatrixE", !7, i64 8, !10, i64 16, !15, i64 40}
!7 = !{!"int", !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 = !{!"_ZTSSt6vectorIPdSaIS0_EE", !16, i64 0}
!16 = !{!"_ZTSSt12_Vector_baseIPdSaIS0_EE", !17, i64 0}
!17 = !{!"_ZTSNSt12_Vector_baseIPdSaIS0_EE12_Vector_implE", !18, i64 0}
!18 = !{!"_ZTSNSt12_Vector_baseIPdSaIS0_EE17_Vector_impl_dataE", !14, i64 0, !14, i64 8, !14, i64 16}
!19 = !{!14, !14, i64 0}
!20 = distinct !{!20, !21}
!21 = !{!"llvm.loop.mustprogress"}


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