; LLVM IR from zchrissirhcz/pixel :: legacy/matcalc (dotproduct)

; 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: 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
define dso_local i64 @dotproduct_u8_asimd2(ptr noundef %0, ptr noundef %1, i32 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  store i64 0, ptr %7, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %10 = load i32, ptr %8, align 4, !tbaa !9
  store i32 %10, ptr %9, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %31, %3
  %12 = load i32, ptr %9, align 4, !tbaa !9
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = icmp ult i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  br label %34

16:                                               ; preds = %11
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = load i8, ptr %17, align 1, !tbaa !13
  %19 = zext i8 %18 to i32
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = load i8, ptr %20, align 1, !tbaa !13
  %22 = zext i8 %21 to i32
  %23 = mul nsw i32 %19, %22
  %24 = sext i32 %23 to i64
  %25 = load i64, ptr %7, align 8, !tbaa !11
  %26 = add i64 %25, %24
  store i64 %26, ptr %7, align 8, !tbaa !11
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = getelementptr inbounds i8, ptr %27, i32 1
  store ptr %28, ptr %4, align 8, !tbaa !5
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = getelementptr inbounds i8, ptr %29, i32 1
  store ptr %30, ptr %5, align 8, !tbaa !5
  br label %31

31:                                               ; preds = %16
  %32 = load i32, ptr %9, align 4, !tbaa !9
  %33 = add i32 %32, 1
  store i32 %33, ptr %9, align 4, !tbaa !9
  br label %11, !llvm.loop !14

34:                                               ; preds = %15
  %35 = load i64, ptr %7, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  ret i64 %35
}

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 = { 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 = !{!"long", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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(read, inaccessiblemem: none) uwtable
define dso_local i64 @dotproduct_u8_asimd2(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1, i32 noundef %2) local_unnamed_addr #0 {
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %3
  %xtraiter = and i32 %2, 3
  %4 = icmp ult i32 %2, 4
  br i1 %4, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i32 %2, -4
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa.ph = phi i64 [ poison, %.lr.ph.preheader ], [ %42, %.lr.ph ]
  %.0914.unr = phi ptr [ %0, %.lr.ph.preheader ], [ %43, %.lr.ph ]
  %.01013.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %42, %.lr.ph ]
  %.01112.unr = phi ptr [ %1, %.lr.ph.preheader ], [ %44, %.lr.ph ]
  %lcmp.mod.not = icmp eq i32 %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
  %.0914.epil = phi ptr [ %11, %.lr.ph.epil ], [ %.0914.unr, %._crit_edge.loopexit.unr-lcssa ]
  %.01013.epil = phi i64 [ %10, %.lr.ph.epil ], [ %.01013.unr, %._crit_edge.loopexit.unr-lcssa ]
  %.01112.epil = phi ptr [ %12, %.lr.ph.epil ], [ %.01112.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i32 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %5 = load i8, ptr %.0914.epil, align 1, !tbaa !5
  %6 = zext i8 %5 to i64
  %7 = load i8, ptr %.01112.epil, align 1, !tbaa !5
  %8 = zext i8 %7 to i64
  %9 = mul nuw nsw i64 %8, %6
  %10 = add i64 %9, %.01013.epil
  %11 = getelementptr inbounds i8, ptr %.0914.epil, i64 1
  %12 = getelementptr inbounds i8, ptr %.01112.epil, i64 1
  %epil.iter.next = add i32 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i32 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.lr.ph.epil, !llvm.loop !8

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil, %3
  %.010.lcssa = phi i64 [ 0, %3 ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %10, %.lr.ph.epil ]
  ret i64 %.010.lcssa

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %.0914 = phi ptr [ %0, %.lr.ph.preheader.new ], [ %43, %.lr.ph ]
  %.01013 = phi i64 [ 0, %.lr.ph.preheader.new ], [ %42, %.lr.ph ]
  %.01112 = phi ptr [ %1, %.lr.ph.preheader.new ], [ %44, %.lr.ph ]
  %niter = phi i32 [ 0, %.lr.ph.preheader.new ], [ %niter.next.3, %.lr.ph ]
  %13 = load i8, ptr %.0914, align 1, !tbaa !5
  %14 = zext i8 %13 to i64
  %15 = load i8, ptr %.01112, align 1, !tbaa !5
  %16 = zext i8 %15 to i64
  %17 = mul nuw nsw i64 %16, %14
  %18 = add i64 %17, %.01013
  %19 = getelementptr inbounds i8, ptr %.0914, i64 1
  %20 = getelementptr inbounds i8, ptr %.01112, i64 1
  %21 = load i8, ptr %19, align 1, !tbaa !5
  %22 = zext i8 %21 to i64
  %23 = load i8, ptr %20, align 1, !tbaa !5
  %24 = zext i8 %23 to i64
  %25 = mul nuw nsw i64 %24, %22
  %26 = add i64 %25, %18
  %27 = getelementptr inbounds i8, ptr %.0914, i64 2
  %28 = getelementptr inbounds i8, ptr %.01112, i64 2
  %29 = load i8, ptr %27, align 1, !tbaa !5
  %30 = zext i8 %29 to i64
  %31 = load i8, ptr %28, align 1, !tbaa !5
  %32 = zext i8 %31 to i64
  %33 = mul nuw nsw i64 %32, %30
  %34 = add i64 %33, %26
  %35 = getelementptr inbounds i8, ptr %.0914, i64 3
  %36 = getelementptr inbounds i8, ptr %.01112, i64 3
  %37 = load i8, ptr %35, align 1, !tbaa !5
  %38 = zext i8 %37 to i64
  %39 = load i8, ptr %36, align 1, !tbaa !5
  %40 = zext i8 %39 to i64
  %41 = mul nuw nsw i64 %40, %38
  %42 = add i64 %41, %34
  %43 = getelementptr inbounds i8, ptr %.0914, i64 4
  %44 = getelementptr inbounds i8, ptr %.01112, i64 4
  %niter.next.3 = add i32 %niter, 4
  %niter.ncmp.3 = icmp eq i32 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !10
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, 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" }

!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 = distinct !{!8, !9}
!9 = !{!"llvm.loop.unroll.disable"}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


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