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

; 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.targets_obj = type { i32, 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 @targets_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.targets_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.targets_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.targets_obj, ptr %11, i32 0, i32 2
  %13 = load ptr, ptr %12, align 8, !tbaa !12
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.targets_obj, ptr %14, i32 0, i32 2
  %16 = load ptr, ptr %15, align 8, !tbaa !12
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.targets_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)
  store i32 0, ptr %5, align 4, !tbaa !13
  br label %22

22:                                               ; preds = %44, %2
  %23 = load i32, ptr %5, align 4, !tbaa !13
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.targets_obj, ptr %24, i32 0, i32 0
  %26 = load i32, ptr %25, align 8, !tbaa !9
  %27 = icmp ult i32 %23, %26
  br i1 %27, label %28, label %47

28:                                               ; preds = %22
  %29 = load ptr, ptr %3, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.targets_obj, ptr %29, i32 0, i32 1
  %31 = load ptr, ptr %30, align 8, !tbaa !14
  %32 = load i32, ptr %5, align 4, !tbaa !13
  %33 = zext i32 %32 to i64
  %34 = getelementptr inbounds ptr, ptr %31, i64 %33
  %35 = load ptr, ptr %34, align 8, !tbaa !5
  %36 = load ptr, ptr %4, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.targets_obj, ptr %36, i32 0, i32 1
  %38 = load ptr, ptr %37, align 8, !tbaa !14
  %39 = load i32, ptr %5, align 4, !tbaa !13
  %40 = zext i32 %39 to i64
  %41 = getelementptr inbounds ptr, ptr %38, i64 %40
  %42 = load ptr, ptr %41, align 8, !tbaa !5
  %43 = call ptr @strcpy(ptr noundef %35, ptr noundef %42) #4
  br label %44

44:                                               ; preds = %28
  %45 = load i32, ptr %5, align 4, !tbaa !13
  %46 = add i32 %45, 1
  store i32 %46, ptr %5, align 4, !tbaa !13
  br label %22, !llvm.loop !15

47:                                               ; preds = %22
  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 = !{!"targets_obj", !11, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !6, i64 16}
!13 = !{!11, !11, i64 0}
!14 = !{!10, !6, i64 8}
!15 = distinct !{!15, !16}
!16 = !{!"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 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 @targets_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 16
  %5 = load ptr, ptr %4, align 8, !tbaa !11
  %6 = getelementptr inbounds i8, ptr %1, i64 16
  %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 = load i32, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i32 %10, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %11 = getelementptr inbounds i8, ptr %0, i64 8
  %12 = getelementptr inbounds i8, ptr %1, i64 8
  br label %13

13:                                               ; preds = %.lr.ph, %13
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %13 ]
  %14 = load ptr, ptr %11, align 8, !tbaa !12
  %15 = getelementptr inbounds ptr, ptr %14, i64 %indvars.iv
  %16 = load ptr, ptr %15, align 8, !tbaa !13
  %17 = load ptr, ptr %12, align 8, !tbaa !12
  %18 = getelementptr inbounds ptr, ptr %17, i64 %indvars.iv
  %19 = load ptr, ptr %18, align 8, !tbaa !13
  %20 = tail call ptr @strcpy(ptr noundef nonnull dereferenceable(1) %16, ptr noundef nonnull dereferenceable(1) %19) #3
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %21 = load i32, ptr %1, align 8, !tbaa !5
  %22 = zext i32 %21 to i64
  %23 = icmp ult i64 %indvars.iv.next, %22
  br i1 %23, label %13, label %._crit_edge, !llvm.loop !14

._crit_edge:                                      ; preds = %13, %2
  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 = !{!"targets_obj", !7, i64 0, !10, i64 8, !10, i64 16}
!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 16}
!12 = !{!6, !10, i64 8}
!13 = !{!10, !10, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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