; LLVM IR from jgaeddert/liquid-dsp :: src/dotprod/src (dotprod_rrrf)

; 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 i32 @dotprod_rrrf_run(ptr noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca float, align 4
  %10 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  store ptr %3, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  store float 0.000000e+00, ptr %9, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  store i32 0, ptr %10, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %28, %4
  %12 = load i32, ptr %10, align 4, !tbaa !9
  %13 = load i32, ptr %7, align 4, !tbaa !9
  %14 = icmp ult i32 %12, %13
  br i1 %14, label %15, label %31

15:                                               ; preds = %11
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = load i32, ptr %10, align 4, !tbaa !9
  %18 = zext i32 %17 to i64
  %19 = getelementptr inbounds float, ptr %16, i64 %18
  %20 = load float, ptr %19, align 4, !tbaa !11
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = load i32, ptr %10, align 4, !tbaa !9
  %23 = zext i32 %22 to i64
  %24 = getelementptr inbounds float, ptr %21, i64 %23
  %25 = load float, ptr %24, align 4, !tbaa !11
  %26 = load float, ptr %9, align 4, !tbaa !11
  %27 = call float @llvm.fmuladd.f32(float %20, float %25, float %26)
  store float %27, ptr %9, align 4, !tbaa !11
  br label %28

28:                                               ; preds = %15
  %29 = load i32, ptr %10, align 4, !tbaa !9
  %30 = add i32 %29, 1
  store i32 %30, ptr %10, align 4, !tbaa !9
  br label %11, !llvm.loop !13

31:                                               ; preds = %11
  %32 = load float, ptr %9, align 4, !tbaa !11
  %33 = load ptr, ptr %8, align 8, !tbaa !5
  store float %32, ptr %33, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  ret i32 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 speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #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 = !{!"float", !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: nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local noundef i32 @dotprod_rrrf_run(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1, i32 noundef %2, ptr nocapture noundef writeonly %3) local_unnamed_addr #0 {
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %4
  %wide.trip.count = zext i32 %2 to i64
  %xtraiter = and i64 %wide.trip.count, 3
  %5 = icmp ult i32 %2, 4
  br i1 %5, 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, 4294967292
  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 ]
  %.0910 = phi float [ 0.000000e+00, %.lr.ph.preheader.new ], [ %25, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.3, %.lr.ph ]
  %6 = getelementptr inbounds float, ptr %0, i64 %indvars.iv
  %7 = load float, ptr %6, align 4, !tbaa !5
  %8 = getelementptr inbounds float, ptr %1, i64 %indvars.iv
  %9 = load float, ptr %8, align 4, !tbaa !5
  %10 = tail call float @llvm.fmuladd.f32(float %7, float %9, float %.0910)
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %11 = getelementptr inbounds float, ptr %0, i64 %indvars.iv.next
  %12 = load float, ptr %11, align 4, !tbaa !5
  %13 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next
  %14 = load float, ptr %13, align 4, !tbaa !5
  %15 = tail call float @llvm.fmuladd.f32(float %12, float %14, float %10)
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %16 = getelementptr inbounds float, ptr %0, i64 %indvars.iv.next.1
  %17 = load float, ptr %16, align 4, !tbaa !5
  %18 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next.1
  %19 = load float, ptr %18, align 4, !tbaa !5
  %20 = tail call float @llvm.fmuladd.f32(float %17, float %19, float %15)
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %21 = getelementptr inbounds float, ptr %0, i64 %indvars.iv.next.2
  %22 = load float, ptr %21, align 4, !tbaa !5
  %23 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next.2
  %24 = load float, ptr %23, align 4, !tbaa !5
  %25 = tail call float @llvm.fmuladd.f32(float %22, float %24, float %20)
  %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
  %.lcssa.ph = phi float [ poison, %.lr.ph.preheader ], [ %25, %.lr.ph ]
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.3, %.lr.ph ]
  %.0910.unr = phi float [ 0.000000e+00, %.lr.ph.preheader ], [ %25, %.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 ]
  %.0910.epil = phi float [ %30, %.lr.ph.epil ], [ %.0910.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %26 = getelementptr inbounds float, ptr %0, i64 %indvars.iv.epil
  %27 = load float, ptr %26, align 4, !tbaa !5
  %28 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.epil
  %29 = load float, ptr %28, align 4, !tbaa !5
  %30 = tail call float @llvm.fmuladd.f32(float %27, float %29, float %.0910.epil)
  %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, %4
  %.09.lcssa = phi float [ 0.000000e+00, %4 ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %30, %.lr.ph.epil ]
  store float %.09.lcssa, ptr %3, align 4, !tbaa !5
  ret i32 0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #1

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: readwrite) 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 speculatable willreturn memory(none) }

!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 = !{!"float", !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: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass