; LLVM IR from AlgoGenesis/C :: String Algorithms/Colussi Algorithm (Program)

; 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"

@.str = external hidden unnamed_addr constant [27 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @computePrefixFunction(ptr noundef, i32 noundef, ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local void @colussi(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca [100 x i32], align 16
  %8 = alloca i32, align 4
  %9 = 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
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = call i64 @strlen(ptr noundef %10) #5
  %12 = trunc i64 %11 to i32
  store i32 %12, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = call i64 @strlen(ptr noundef %13) #5
  %15 = trunc i64 %14 to i32
  store i32 %15, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 400, ptr %7) #4
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !9
  %18 = getelementptr inbounds [100 x i32], ptr %7, i64 0, i64 0
  call void @computePrefixFunction(ptr noundef %16, i32 noundef %17, ptr noundef %18)
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 0, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %19

19:                                               ; preds = %69, %2
  %20 = load i32, ptr %8, align 4, !tbaa !9
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %23, label %70

23:                                               ; preds = %19
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  %25 = load i32, ptr %8, align 4, !tbaa !9
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds i8, ptr %24, i64 %26
  %28 = load i8, ptr %27, align 1, !tbaa !11
  %29 = sext i8 %28 to i32
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = load i32, ptr %9, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds i8, ptr %30, i64 %32
  %34 = load i8, ptr %33, align 1, !tbaa !11
  %35 = sext i8 %34 to i32
  %36 = icmp eq i32 %29, %35
  br i1 %36, label %37, label %56

37:                                               ; preds = %23
  %38 = load i32, ptr %8, align 4, !tbaa !9
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %8, align 4, !tbaa !9
  %40 = load i32, ptr %9, align 4, !tbaa !9
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %9, align 4, !tbaa !9
  %42 = load i32, ptr %9, align 4, !tbaa !9
  %43 = load i32, ptr %6, align 4, !tbaa !9
  %44 = icmp eq i32 %42, %43
  br i1 %44, label %45, label %55

45:                                               ; preds = %37
  %46 = load i32, ptr %8, align 4, !tbaa !9
  %47 = load i32, ptr %9, align 4, !tbaa !9
  %48 = sub nsw i32 %46, %47
  %49 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %48)
  %50 = load i32, ptr %9, align 4, !tbaa !9
  %51 = sub nsw i32 %50, 1
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds [100 x i32], ptr %7, i64 0, i64 %52
  %54 = load i32, ptr %53, align 4, !tbaa !9
  store i32 %54, ptr %9, align 4, !tbaa !9
  br label %55

55:                                               ; preds = %45, %37
  br label %69

56:                                               ; preds = %23
  %57 = load i32, ptr %9, align 4, !tbaa !9
  %58 = icmp sgt i32 %57, 0
  br i1 %58, label %59, label %65

59:                                               ; preds = %56
  %60 = load i32, ptr %9, align 4, !tbaa !9
  %61 = sub nsw i32 %60, 1
  %62 = sext i32 %61 to i64
  %63 = getelementptr inbounds [100 x i32], ptr %7, i64 0, i64 %62
  %64 = load i32, ptr %63, align 4, !tbaa !9
  store i32 %64, ptr %9, align 4, !tbaa !9
  br label %68

65:                                               ; preds = %56
  %66 = load i32, ptr %8, align 4, !tbaa !9
  %67 = add nsw i32 %66, 1
  store i32 %67, ptr %8, align 4, !tbaa !9
  br label %68

68:                                               ; preds = %65, %59
  br label %69

69:                                               ; preds = %68, %55
  br label %19, !llvm.loop !12

70:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 400, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  ret void
}

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #2

declare i32 @printf(ptr noundef, ...) #3

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind willreturn memory(read) "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 = { "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 }
attributes #5 = { nounwind willreturn memory(read) }

!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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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"

@.str = external hidden unnamed_addr constant [27 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @computePrefixFunction(ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local void @colussi(ptr nocapture noundef readonly %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = alloca [100 x i32], align 16
  %4 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %0) #4
  %5 = trunc i64 %4 to i32
  %6 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %1) #4
  %7 = trunc i64 %6 to i32
  call void @llvm.lifetime.start.p0(i64 400, ptr nonnull %3) #5
  call void @computePrefixFunction(ptr noundef %1, i32 noundef %7, ptr noundef nonnull %3)
  %8 = icmp sgt i32 %5, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %34
  %.024 = phi i32 [ %.1, %34 ], [ 0, %2 ]
  %.01923 = phi i32 [ %.120, %34 ], [ 0, %2 ]
  %9 = sext i32 %.01923 to i64
  %10 = getelementptr inbounds i8, ptr %0, i64 %9
  %11 = load i8, ptr %10, align 1, !tbaa !5
  %12 = sext i32 %.024 to i64
  %13 = getelementptr inbounds i8, ptr %1, i64 %12
  %14 = load i8, ptr %13, align 1, !tbaa !5
  %15 = icmp eq i8 %11, %14
  br i1 %15, label %16, label %25

16:                                               ; preds = %.lr.ph
  %17 = add nsw i32 %.01923, 1
  %18 = add nsw i32 %.024, 1
  %19 = icmp eq i32 %18, %7
  br i1 %19, label %20, label %34

20:                                               ; preds = %16
  %21 = sub i32 %.01923, %.024
  %22 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %21)
  %23 = getelementptr inbounds [100 x i32], ptr %3, i64 0, i64 %12
  %24 = load i32, ptr %23, align 4, !tbaa !8
  br label %34

25:                                               ; preds = %.lr.ph
  %26 = icmp sgt i32 %.024, 0
  br i1 %26, label %27, label %32

27:                                               ; preds = %25
  %28 = add nsw i32 %.024, -1
  %29 = zext nneg i32 %28 to i64
  %30 = getelementptr inbounds [100 x i32], ptr %3, i64 0, i64 %29
  %31 = load i32, ptr %30, align 4, !tbaa !8
  br label %34

32:                                               ; preds = %25
  %33 = add nsw i32 %.01923, 1
  br label %34

34:                                               ; preds = %27, %32, %16, %20
  %.120 = phi i32 [ %17, %20 ], [ %17, %16 ], [ %.01923, %27 ], [ %33, %32 ]
  %.1 = phi i32 [ %24, %20 ], [ %18, %16 ], [ %31, %27 ], [ %.024, %32 ]
  %35 = icmp slt i32 %.120, %5
  br i1 %35, label %.lr.ph, label %._crit_edge, !llvm.loop !10

._crit_edge:                                      ; preds = %34, %2
  call void @llvm.lifetime.end.p0(i64 400, ptr nonnull %3) #5
  ret void
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 = { nofree 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 #4 = { nounwind willreturn memory(read) }
attributes #5 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !6, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


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