; LLVM IR from AlgoGenesis/C :: Machine_Learning_Algorithms/Linear Regression (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 [34 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [35 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [27 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [46 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 uwtable
declare dso_local void @linear_regression(ptr noundef, ptr noundef, i32 noundef, ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #1 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca double, align 8
  %8 = alloca double, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  %9 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %2)
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = icmp sgt i32 %11, 1000
  br i1 %12, label %13, label %15

13:                                               ; preds = %0
  %14 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef 1000)
  store i32 1, ptr %1, align 4
  store i32 1, ptr %3, align 4
  br label %59

15:                                               ; preds = %0
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #5
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = mul i64 %17, 8
  %19 = call noalias ptr @malloc(i64 noundef %18) #6
  store ptr %19, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #5
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = mul i64 %21, 8
  %23 = call noalias ptr @malloc(i64 noundef %22) #6
  store ptr %23, ptr %5, align 8, !tbaa !9
  %24 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %25

25:                                               ; preds = %47, %15
  %26 = load i32, ptr %6, align 4, !tbaa !5
  %27 = load i32, ptr %2, align 4, !tbaa !5
  %28 = icmp slt i32 %26, %27
  br i1 %28, label %30, label %29

29:                                               ; preds = %25
  store i32 2, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  br label %50

30:                                               ; preds = %25
  %31 = load i32, ptr %6, align 4, !tbaa !5
  %32 = add nsw i32 %31, 1
  %33 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %32)
  %34 = load ptr, ptr %4, align 8, !tbaa !9
  %35 = load i32, ptr %6, align 4, !tbaa !5
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds double, ptr %34, i64 %36
  %38 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.5, ptr noundef %37)
  %39 = load i32, ptr %6, align 4, !tbaa !5
  %40 = add nsw i32 %39, 1
  %41 = call i32 (ptr, ...) @printf(ptr noundef @.str.6, i32 noundef %40)
  %42 = load ptr, ptr %5, align 8, !tbaa !9
  %43 = load i32, ptr %6, align 4, !tbaa !5
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds double, ptr %42, i64 %44
  %46 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.5, ptr noundef %45)
  br label %47

47:                                               ; preds = %30
  %48 = load i32, ptr %6, align 4, !tbaa !5
  %49 = add nsw i32 %48, 1
  store i32 %49, ptr %6, align 4, !tbaa !5
  br label %25, !llvm.loop !11

50:                                               ; preds = %29
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %51 = load ptr, ptr %4, align 8, !tbaa !9
  %52 = load ptr, ptr %5, align 8, !tbaa !9
  %53 = load i32, ptr %2, align 4, !tbaa !5
  call void @linear_regression(ptr noundef %51, ptr noundef %52, i32 noundef %53, ptr noundef %7, ptr noundef %8)
  %54 = load double, ptr %7, align 8, !tbaa !13
  %55 = load double, ptr %8, align 8, !tbaa !13
  %56 = call i32 (ptr, ...) @printf(ptr noundef @.str.7, double noundef %54, double noundef %55)
  %57 = load ptr, ptr %4, align 8, !tbaa !9
  call void @free(ptr noundef %57) #5
  %58 = load ptr, ptr %5, align 8, !tbaa !9
  call void @free(ptr noundef %58) #5
  store i32 0, ptr %1, align 4
  store i32 1, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  br label %59

59:                                               ; preds = %50, %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  %60 = load i32, ptr %1, align 4
  ret i32 %60
}

declare i32 @printf(ptr noundef, ...) #2

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #3

; Function Attrs: nounwind
declare void @free(ptr noundef) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { "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 allocsize(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 "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 #5 = { nounwind }
attributes #6 = { nounwind allocsize(0) }

!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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!14, !14, i64 0}
!14 = !{!"double", !7, i64 0}


; 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 [34 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [35 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [27 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [46 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 uwtable
declare dso_local void @linear_regression(ptr noundef, ptr noundef, i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @main() local_unnamed_addr #1 {
  %1 = alloca i32, align 4
  %2 = alloca double, align 8
  %3 = alloca double, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  %4 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %1)
  %6 = load i32, ptr %1, align 4, !tbaa !5
  %7 = icmp sgt i32 %6, 1000
  br i1 %7, label %8, label %10

8:                                                ; preds = %0
  %9 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef 1000)
  br label %31

10:                                               ; preds = %0
  %11 = sext i32 %6 to i64
  %12 = shl nsw i64 %11, 3
  %13 = call noalias ptr @malloc(i64 noundef %12) #6
  %14 = call noalias ptr @malloc(i64 noundef %12) #6
  %15 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %16 = load i32, ptr %1, align 4, !tbaa !5
  %17 = icmp sgt i32 %16, 0
  br i1 %17, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %10
  %.lcssa = phi i32 [ %16, %10 ], [ %28, %.lr.ph ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #5
  call void @linear_regression(ptr noundef %13, ptr noundef %14, i32 noundef %.lcssa, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %18 = load double, ptr %2, align 8, !tbaa !9
  %19 = load double, ptr %3, align 8, !tbaa !9
  %20 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.7, double noundef %18, double noundef %19)
  call void @free(ptr noundef %13) #5
  call void @free(ptr noundef %14) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #5
  br label %31

.lr.ph:                                           ; preds = %10, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %10 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %21 = trunc nuw nsw i64 %indvars.iv.next to i32
  %22 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %21)
  %23 = getelementptr inbounds double, ptr %13, i64 %indvars.iv
  %24 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.5, ptr noundef %23)
  %25 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.6, i32 noundef %21)
  %26 = getelementptr inbounds double, ptr %14, i64 %indvars.iv
  %27 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.5, ptr noundef %26)
  %28 = load i32, ptr %1, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = icmp slt i64 %indvars.iv.next, %29
  br i1 %30, label %.lr.ph, label %._crit_edge, !llvm.loop !11

31:                                               ; preds = %._crit_edge, %8
  %.012 = phi i32 [ 1, %8 ], [ 0, %._crit_edge ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  ret i32 %.012
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #4

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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 #3 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 #5 = { nounwind }
attributes #6 = { nounwind allocsize(0) }

!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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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