; LLVM IR from Sentdex/NNfSiX :: C (p005-ReLU-Activation)

; 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"

; Function Attrs: nounwind uwtable
define dso_local double @dot_product(ptr noundef %0, ptr noundef %1, ptr noundef %2, i32 noundef %3, ptr noundef %4) #0 {
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca double, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store ptr %2, ptr %8, align 8, !tbaa !5
  store i32 %3, ptr %9, align 4, !tbaa !9
  store ptr %4, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  store i32 0, ptr %11, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #3
  store double 0.000000e+00, ptr %12, align 8, !tbaa !11
  store i32 0, ptr %11, align 4, !tbaa !9
  br label %13

13:                                               ; preds = %30, %5
  %14 = load i32, ptr %11, align 4, !tbaa !9
  %15 = load i32, ptr %9, align 4, !tbaa !9
  %16 = icmp slt i32 %14, %15
  br i1 %16, label %17, label %33

17:                                               ; preds = %13
  %18 = load ptr, ptr %6, align 8, !tbaa !5
  %19 = load i32, ptr %11, align 4, !tbaa !9
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds double, ptr %18, i64 %20
  %22 = load double, ptr %21, align 8, !tbaa !11
  %23 = load ptr, ptr %7, align 8, !tbaa !5
  %24 = load i32, ptr %11, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds double, ptr %23, i64 %25
  %27 = load double, ptr %26, align 8, !tbaa !11
  %28 = load double, ptr %12, align 8, !tbaa !11
  %29 = call double @llvm.fmuladd.f64(double %22, double %27, double %28)
  store double %29, ptr %12, align 8, !tbaa !11
  br label %30

30:                                               ; preds = %17
  %31 = load i32, ptr %11, align 4, !tbaa !9
  %32 = add nsw i32 %31, 1
  store i32 %32, ptr %11, align 4, !tbaa !9
  br label %13, !llvm.loop !13

33:                                               ; preds = %13
  %34 = load ptr, ptr %10, align 8, !tbaa !5
  %35 = icmp ne ptr %34, null
  br i1 %35, label %36, label %38

36:                                               ; preds = %33
  %37 = load ptr, ptr %10, align 8, !tbaa !5
  call void %37(ptr noundef %12)
  br label %38

38:                                               ; preds = %36, %33
  %39 = load ptr, ptr %8, align 8, !tbaa !5
  %40 = load double, ptr %39, align 8, !tbaa !11
  %41 = load double, ptr %12, align 8, !tbaa !11
  %42 = fadd double %41, %40
  store double %42, ptr %12, align 8, !tbaa !11
  %43 = load double, ptr %12, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  ret double %43
}

; 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 speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #2

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

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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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, !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 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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: nounwind uwtable
define dso_local double @dot_product(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1, ptr nocapture noundef readonly %2, i32 noundef %3, ptr noundef readonly %4) local_unnamed_addr #0 {
  %6 = alloca double, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #3
  %7 = icmp sgt i32 %3, 0
  br i1 %7, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %5
  %wide.trip.count = zext nneg i32 %3 to i64
  %xtraiter = and i64 %wide.trip.count, 3
  %8 = icmp ult i32 %3, 4
  br i1 %8, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 2147483644
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.3, %.lr.ph ]
  %9 = phi double [ 0.000000e+00, %.lr.ph.preheader.new ], [ %29, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.3, %.lr.ph ]
  %10 = getelementptr inbounds double, ptr %0, i64 %indvars.iv
  %11 = load double, ptr %10, align 8, !tbaa !5
  %12 = getelementptr inbounds double, ptr %1, i64 %indvars.iv
  %13 = load double, ptr %12, align 8, !tbaa !5
  %14 = tail call double @llvm.fmuladd.f64(double %11, double %13, double %9)
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %15 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next
  %16 = load double, ptr %15, align 8, !tbaa !5
  %17 = getelementptr inbounds double, ptr %1, i64 %indvars.iv.next
  %18 = load double, ptr %17, align 8, !tbaa !5
  %19 = tail call double @llvm.fmuladd.f64(double %16, double %18, double %14)
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %20 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.1
  %21 = load double, ptr %20, align 8, !tbaa !5
  %22 = getelementptr inbounds double, ptr %1, i64 %indvars.iv.next.1
  %23 = load double, ptr %22, align 8, !tbaa !5
  %24 = tail call double @llvm.fmuladd.f64(double %21, double %23, double %19)
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %25 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.2
  %26 = load double, ptr %25, align 8, !tbaa !5
  %27 = getelementptr inbounds double, ptr %1, i64 %indvars.iv.next.2
  %28 = load double, ptr %27, align 8, !tbaa !5
  %29 = tail call double @llvm.fmuladd.f64(double %26, double %28, double %24)
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %niter.next.3 = add i64 %niter, 4
  %niter.ncmp.3 = icmp eq i64 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !9

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa15.ph = phi double [ poison, %.lr.ph.preheader ], [ %29, %.lr.ph ]
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.3, %.lr.ph ]
  %.unr = phi double [ 0.000000e+00, %.lr.ph.preheader ], [ %29, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %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
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.lr.ph.epil ], [ %indvars.iv.unr, %._crit_edge.loopexit.unr-lcssa ]
  %30 = phi double [ %35, %.lr.ph.epil ], [ %.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %31 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.epil
  %32 = load double, ptr %31, align 8, !tbaa !5
  %33 = getelementptr inbounds double, ptr %1, i64 %indvars.iv.epil
  %34 = load double, ptr %33, align 8, !tbaa !5
  %35 = tail call double @llvm.fmuladd.f64(double %32, double %34, double %30)
  %indvars.iv.next.epil = add nuw nsw i64 %indvars.iv.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.lr.ph.epil, !llvm.loop !11

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil, %5
  %.lcssa = phi double [ 0.000000e+00, %5 ], [ %.lcssa15.ph, %._crit_edge.loopexit.unr-lcssa ], [ %35, %.lr.ph.epil ]
  store double %.lcssa, ptr %6, align 8, !tbaa !5
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %37, label %36

36:                                               ; preds = %._crit_edge
  call void %4(ptr noundef nonnull %6) #3
  %.pre = load double, ptr %6, align 8, !tbaa !5
  br label %37

37:                                               ; preds = %36, %._crit_edge
  %38 = phi double [ %.pre, %36 ], [ %.lcssa, %._crit_edge ]
  %39 = load double, ptr %2, align 8, !tbaa !5
  %40 = fadd double %39, %38
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #3
  ret double %40
}

; 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 speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #2

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

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 nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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, !6, i64 0}
!6 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.unroll.disable"}


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