; LLVM IR from introlab/odas :: src/signal (track)

; 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"

%struct.tracks_obj = type { i32, ptr, 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: nounwind
declare ptr @strcpy(ptr noundef, ptr noundef) #1

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

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

; Function Attrs: nounwind uwtable
define dso_local void @tracks_copy(ptr noundef %0, ptr noundef %1) #3 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.tracks_obj, ptr %6, i32 0, i32 0
  %8 = load i32, ptr %7, align 8, !tbaa !9
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.tracks_obj, ptr %9, i32 0, i32 0
  store i32 %8, ptr %10, align 8, !tbaa !9
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.tracks_obj, ptr %11, i32 0, i32 3
  %13 = load ptr, ptr %12, align 8, !tbaa !12
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.tracks_obj, ptr %14, i32 0, i32 3
  %16 = load ptr, ptr %15, align 8, !tbaa !12
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.tracks_obj, ptr %17, i32 0, i32 0
  %19 = load i32, ptr %18, align 8, !tbaa !9
  %20 = zext i32 %19 to i64
  %21 = mul i64 12, %20
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %13, ptr align 4 %16, i64 %21, i1 false)
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.tracks_obj, ptr %22, i32 0, i32 1
  %24 = load ptr, ptr %23, align 8, !tbaa !13
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.tracks_obj, ptr %25, i32 0, i32 1
  %27 = load ptr, ptr %26, align 8, !tbaa !13
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.tracks_obj, ptr %28, i32 0, i32 0
  %30 = load i32, ptr %29, align 8, !tbaa !9
  %31 = zext i32 %30 to i64
  %32 = mul i64 8, %31
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %24, ptr align 8 %27, i64 %32, i1 false)
  store i32 0, ptr %5, align 4, !tbaa !14
  br label %33

33:                                               ; preds = %55, %2
  %34 = load i32, ptr %5, align 4, !tbaa !14
  %35 = load ptr, ptr %4, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.tracks_obj, ptr %35, i32 0, i32 0
  %37 = load i32, ptr %36, align 8, !tbaa !9
  %38 = icmp ult i32 %34, %37
  br i1 %38, label %39, label %58

39:                                               ; preds = %33
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.tracks_obj, ptr %40, i32 0, i32 2
  %42 = load ptr, ptr %41, align 8, !tbaa !15
  %43 = load i32, ptr %5, align 4, !tbaa !14
  %44 = zext i32 %43 to i64
  %45 = getelementptr inbounds ptr, ptr %42, i64 %44
  %46 = load ptr, ptr %45, align 8, !tbaa !5
  %47 = load ptr, ptr %4, align 8, !tbaa !5
  %48 = getelementptr inbounds %struct.tracks_obj, ptr %47, i32 0, i32 2
  %49 = load ptr, ptr %48, align 8, !tbaa !15
  %50 = load i32, ptr %5, align 4, !tbaa !14
  %51 = zext i32 %50 to i64
  %52 = getelementptr inbounds ptr, ptr %49, i64 %51
  %53 = load ptr, ptr %52, align 8, !tbaa !5
  %54 = call ptr @strcpy(ptr noundef %46, ptr noundef %53) #4
  br label %55

55:                                               ; preds = %39
  %56 = load i32, ptr %5, align 4, !tbaa !14
  %57 = add i32 %56, 1
  store i32 %57, ptr %5, align 4, !tbaa !14
  br label %33, !llvm.loop !16

58:                                               ; preds = %33
  %59 = load ptr, ptr %3, align 8, !tbaa !5
  %60 = getelementptr inbounds %struct.tracks_obj, ptr %59, i32 0, i32 4
  %61 = load ptr, ptr %60, align 8, !tbaa !18
  %62 = load ptr, ptr %4, align 8, !tbaa !5
  %63 = getelementptr inbounds %struct.tracks_obj, ptr %62, i32 0, i32 4
  %64 = load ptr, ptr %63, align 8, !tbaa !18
  %65 = load ptr, ptr %4, align 8, !tbaa !5
  %66 = getelementptr inbounds %struct.tracks_obj, ptr %65, i32 0, i32 0
  %67 = load i32, ptr %66, align 8, !tbaa !9
  %68 = zext i32 %67 to i64
  %69 = mul i64 4, %68
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %61, ptr align 4 %64, i64 %69, i1 false)
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  ret void
}

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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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/C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"tracks_obj", !11, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !6, i64 24}
!13 = !{!10, !6, i64 8}
!14 = !{!11, !11, i64 0}
!15 = !{!10, !6, i64 16}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}
!18 = !{!10, !6, i64 32}


; 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 nofree nounwind willreturn memory(argmem: readwrite)
declare ptr @strcpy(ptr noalias noundef returned writeonly, ptr noalias nocapture noundef readonly) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: nofree nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local void @tracks_copy(ptr nocapture noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #2 {
  %3 = load i32, ptr %1, align 8, !tbaa !5
  store i32 %3, ptr %0, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 24
  %5 = load ptr, ptr %4, align 8, !tbaa !11
  %6 = getelementptr inbounds i8, ptr %1, i64 24
  %7 = load ptr, ptr %6, align 8, !tbaa !11
  %8 = zext i32 %3 to i64
  %9 = mul nuw nsw i64 %8, 12
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 4 %5, ptr align 4 %7, i64 %9, i1 false)
  %10 = getelementptr inbounds i8, ptr %0, i64 8
  %11 = load ptr, ptr %10, align 8, !tbaa !12
  %12 = getelementptr inbounds i8, ptr %1, i64 8
  %13 = load ptr, ptr %12, align 8, !tbaa !12
  %14 = load i32, ptr %1, align 8, !tbaa !5
  %15 = zext i32 %14 to i64
  %16 = shl nuw nsw i64 %15, 3
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 8 %11, ptr align 8 %13, i64 %16, i1 false)
  %17 = load i32, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i32 %17, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %18 = getelementptr inbounds i8, ptr %0, i64 16
  %19 = getelementptr inbounds i8, ptr %1, i64 16
  br label %20

20:                                               ; preds = %.lr.ph, %20
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %20 ]
  %21 = load ptr, ptr %18, align 8, !tbaa !13
  %22 = getelementptr inbounds ptr, ptr %21, i64 %indvars.iv
  %23 = load ptr, ptr %22, align 8, !tbaa !14
  %24 = load ptr, ptr %19, align 8, !tbaa !13
  %25 = getelementptr inbounds ptr, ptr %24, i64 %indvars.iv
  %26 = load ptr, ptr %25, align 8, !tbaa !14
  %27 = tail call ptr @strcpy(ptr noundef nonnull dereferenceable(1) %23, ptr noundef nonnull dereferenceable(1) %26) #3
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %28 = load i32, ptr %1, align 8, !tbaa !5
  %29 = zext i32 %28 to i64
  %30 = icmp ult i64 %indvars.iv.next, %29
  br i1 %30, label %20, label %._crit_edge.loopexit, !llvm.loop !15

._crit_edge.loopexit:                             ; preds = %20
  %31 = zext i32 %28 to i64
  %32 = shl nuw nsw i64 %31, 2
  br label %._crit_edge

._crit_edge:                                      ; preds = %2, %._crit_edge.loopexit
  %.lcssa = phi i64 [ %32, %._crit_edge.loopexit ], [ 0, %2 ]
  %33 = getelementptr inbounds i8, ptr %0, i64 32
  %34 = load ptr, ptr %33, align 8, !tbaa !17
  %35 = getelementptr inbounds i8, ptr %1, i64 32
  %36 = load ptr, ptr %35, align 8, !tbaa !17
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 4 %34, ptr align 4 %36, i64 %.lcssa, i1 false)
  ret void
}

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: readwrite) "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 nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind memory(readwrite, inaccessiblemem: none) 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 = !{!"tracks_obj", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 24}
!12 = !{!6, !10, i64 8}
!13 = !{!6, !10, i64 16}
!14 = !{!10, !10, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}
!17 = !{!6, !10, i64 32}


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