; LLVM IR from Compaile/ctrack :: examples/basic_singlethreaded.ll (Z14sum_of_squaresi)

; 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.ctrack::vCTRACK_VERSION_MAJOR_CTRACK_VERSION_MINOR_CTRACK_VERSION_PATCH::EventHandler" = type <{ %"class.std::chrono::time_point", i32, i32, %"class.std::basic_string_view", %"class.std::basic_string_view", i32, i32, i32, [4 x i8] }>
%"class.std::chrono::time_point" = type { %"class.std::chrono::duration" }
%"class.std::chrono::duration" = type { i64 }
%"class.std::basic_string_view" = type { i64, ptr }

@.str.19 = external hidden unnamed_addr constant [83 x i8], align 1
@.str.20 = external hidden unnamed_addr constant [15 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: nounwind
declare i64 @_ZNSt6chrono3_V212system_clock3nowEv() #1

; Function Attrs: mustprogress uwtable
define dso_local noundef double @_Z14sum_of_squaresi(i32 noundef %0) #2 {
  %2 = alloca i32, align 4
  %3 = alloca %"class.ctrack::vCTRACK_VERSION_MAJOR_CTRACK_VERSION_MINOR_CTRACK_VERSION_PATCH::EventHandler", align 8
  %4 = alloca %"class.std::chrono::time_point", align 8
  %5 = alloca double, align 8
  %6 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 64, ptr %3) #4
  %7 = call i64 @_ZNSt6chrono3_V212system_clock3nowEv() #4
  %8 = getelementptr inbounds %"class.std::chrono::time_point", ptr %4, i32 0, i32 0
  %9 = getelementptr inbounds %"class.std::chrono::duration", ptr %8, i32 0, i32 0
  store i64 %7, ptr %9, align 8
  %10 = getelementptr inbounds %"class.std::chrono::time_point", ptr %4, i32 0, i32 0
  %11 = getelementptr inbounds %"class.std::chrono::duration", ptr %10, i32 0, i32 0
  %12 = load i64, ptr %11, align 8
  call void @_ZN6ctrack63vCTRACK_VERSION_MAJOR_CTRACK_VERSION_MINOR_CTRACK_VERSION_PATCH12EventHandlerC2EiPKcS3_NSt6chrono10time_pointINS4_3_V212system_clockENS4_8durationIlSt5ratioILl1ELl1000000000EEEEEE(ptr noundef nonnull align 8 dereferenceable(60) %3, i32 noundef 7, ptr noundef @.str.19, ptr noundef @.str.20, i64 %12)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  store double 0.000000e+00, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 1, ptr %6, align 4, !tbaa !5
  br label %13

13:                                               ; preds = %25, %1
  %14 = load i32, ptr %6, align 4, !tbaa !5
  %15 = load i32, ptr %2, align 4, !tbaa !5
  %16 = icmp sle i32 %14, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %28

18:                                               ; preds = %13
  %19 = load i32, ptr %6, align 4, !tbaa !5
  %20 = load i32, ptr %6, align 4, !tbaa !5
  %21 = mul nsw i32 %19, %20
  %22 = sitofp i32 %21 to double
  %23 = load double, ptr %5, align 8, !tbaa !9
  %24 = fadd double %23, %22
  store double %24, ptr %5, align 8, !tbaa !9
  br label %25

25:                                               ; preds = %18
  %26 = load i32, ptr %6, align 4, !tbaa !5
  %27 = add nsw i32 %26, 1
  store i32 %27, ptr %6, align 4, !tbaa !5
  br label %13, !llvm.loop !11

28:                                               ; preds = %17
  %29 = load double, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  call void @_ZN6ctrack63vCTRACK_VERSION_MAJOR_CTRACK_VERSION_MINOR_CTRACK_VERSION_PATCH12EventHandlerD2Ev(ptr noundef nonnull align 8 dereferenceable(60) %3) #4
  call void @llvm.lifetime.end.p0(i64 64, ptr %3) #4
  ret double %29
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN6ctrack63vCTRACK_VERSION_MAJOR_CTRACK_VERSION_MINOR_CTRACK_VERSION_PATCH12EventHandlerC2EiPKcS3_NSt6chrono10time_pointINS4_3_V212system_clockENS4_8durationIlSt5ratioILl1ELl1000000000EEEEEE(ptr noundef nonnull align 8 dereferenceable(60), i32 noundef, ptr noundef, ptr noundef, i64) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN6ctrack63vCTRACK_VERSION_MAJOR_CTRACK_VERSION_MINOR_CTRACK_VERSION_PATCH12EventHandlerD2Ev(ptr noundef nonnull align 8 dereferenceable(60)) unnamed_addr #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"double", !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.ctrack::vCTRACK_VERSION_MAJOR_CTRACK_VERSION_MINOR_CTRACK_VERSION_PATCH::EventHandler" = type <{ %"class.std::chrono::time_point", i32, i32, %"class.std::basic_string_view", %"class.std::basic_string_view", i32, i32, i32, [4 x i8] }>
%"class.std::chrono::time_point" = type { %"class.std::chrono::duration" }
%"class.std::chrono::duration" = type { i64 }
%"class.std::basic_string_view" = type { i64, ptr }

@.str.19 = external hidden unnamed_addr constant [83 x i8], align 1
@.str.20 = external hidden unnamed_addr constant [15 x i8], align 1

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

; Function Attrs: nounwind
declare i64 @_ZNSt6chrono3_V212system_clock3nowEv() local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local noundef double @_Z14sum_of_squaresi(i32 noundef %0) local_unnamed_addr #2 {
  %2 = alloca %"class.ctrack::vCTRACK_VERSION_MAJOR_CTRACK_VERSION_MINOR_CTRACK_VERSION_PATCH::EventHandler", align 8
  call void @llvm.lifetime.start.p0(i64 64, ptr nonnull %2) #4
  %3 = tail call i64 @_ZNSt6chrono3_V212system_clock3nowEv() #4
  call void @_ZN6ctrack63vCTRACK_VERSION_MAJOR_CTRACK_VERSION_MINOR_CTRACK_VERSION_PATCH12EventHandlerC2EiPKcS3_NSt6chrono10time_pointINS4_3_V212system_clockENS4_8durationIlSt5ratioILl1ELl1000000000EEEEEE(ptr noundef nonnull align 8 dereferenceable(60) %2, i32 noundef 7, ptr noundef nonnull @.str.19, ptr noundef nonnull @.str.20, i64 %3)
  %.not7 = icmp slt i32 %0, 1
  br i1 %.not7, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %1
  %xtraiter = and i32 %0, 3
  %4 = icmp ult i32 %0, 4
  br i1 %4, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i32 %0, 2147483644
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa.ph = phi double [ poison, %.lr.ph.preheader ], [ %23, %.lr.ph ]
  %.09.unr = phi i32 [ 1, %.lr.ph.preheader ], [ %24, %.lr.ph ]
  %.068.unr = phi double [ 0.000000e+00, %.lr.ph.preheader ], [ %23, %.lr.ph ]
  %lcmp.mod.not = icmp eq i32 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil
  %.09.epil = phi i32 [ %8, %.lr.ph.epil ], [ %.09.unr, %._crit_edge.loopexit.unr-lcssa ]
  %.068.epil = phi double [ %7, %.lr.ph.epil ], [ %.068.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i32 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %5 = mul nuw nsw i32 %.09.epil, %.09.epil
  %6 = uitofp nneg i32 %5 to double
  %7 = fadd double %.068.epil, %6
  %8 = add nuw i32 %.09.epil, 1
  %epil.iter.next = add i32 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i32 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.lr.ph.epil, !llvm.loop !5

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil, %1
  %.06.lcssa = phi double [ 0.000000e+00, %1 ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %7, %.lr.ph.epil ]
  call void @_ZN6ctrack63vCTRACK_VERSION_MAJOR_CTRACK_VERSION_MINOR_CTRACK_VERSION_PATCH12EventHandlerD2Ev(ptr noundef nonnull align 8 dereferenceable(60) %2) #4
  call void @llvm.lifetime.end.p0(i64 64, ptr nonnull %2) #4
  ret double %.06.lcssa

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %.09 = phi i32 [ 1, %.lr.ph.preheader.new ], [ %24, %.lr.ph ]
  %.068 = phi double [ 0.000000e+00, %.lr.ph.preheader.new ], [ %23, %.lr.ph ]
  %niter = phi i32 [ 0, %.lr.ph.preheader.new ], [ %niter.next.3, %.lr.ph ]
  %9 = mul nuw nsw i32 %.09, %.09
  %10 = uitofp nneg i32 %9 to double
  %11 = fadd double %.068, %10
  %12 = add nuw nsw i32 %.09, 1
  %13 = mul nuw nsw i32 %12, %12
  %14 = uitofp nneg i32 %13 to double
  %15 = fadd double %11, %14
  %16 = add nuw nsw i32 %.09, 2
  %17 = mul nuw nsw i32 %16, %16
  %18 = uitofp nneg i32 %17 to double
  %19 = fadd double %15, %18
  %20 = add nuw i32 %.09, 3
  %21 = mul nuw nsw i32 %20, %20
  %22 = uitofp nneg i32 %21 to double
  %23 = fadd double %19, %22
  %24 = add nuw i32 %.09, 4
  %niter.next.3 = add i32 %niter, 4
  %niter.ncmp.3 = icmp eq i32 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !7
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN6ctrack63vCTRACK_VERSION_MAJOR_CTRACK_VERSION_MINOR_CTRACK_VERSION_PATCH12EventHandlerC2EiPKcS3_NSt6chrono10time_pointINS4_3_V212system_clockENS4_8durationIlSt5ratioILl1ELl1000000000EEEEEE(ptr noundef nonnull align 8 dereferenceable(60), i32 noundef, ptr noundef, ptr noundef, i64) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN6ctrack63vCTRACK_VERSION_MAJOR_CTRACK_VERSION_MINOR_CTRACK_VERSION_PATCH12EventHandlerD2Ev(ptr noundef nonnull align 8 dereferenceable(60)) unnamed_addr #3 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.unroll.disable"}
!7 = distinct !{!7, !8}
!8 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass