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

; 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 void @matrix_subtract_f32_naive(ptr noundef %0, ptr noundef %1, ptr noundef %2, i64 noundef %3, i64 noundef %4) #1 {
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i64, align 8
  %10 = alloca i64, align 8
  %11 = alloca i64, align 8
  %12 = alloca i64, 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 i64 %3, ptr %9, align 8, !tbaa !9
  store i64 %4, ptr %10, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #2
  %13 = load i64, ptr %9, align 8, !tbaa !9
  %14 = load i64, ptr %10, align 8, !tbaa !9
  %15 = mul i64 %13, %14
  store i64 %15, ptr %11, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #2
  store i64 0, ptr %12, align 8, !tbaa !9
  br label %16

16:                                               ; preds = %34, %5
  %17 = load i64, ptr %12, align 8, !tbaa !9
  %18 = load i64, ptr %11, align 8, !tbaa !9
  %19 = icmp ult i64 %17, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #2
  br label %37

21:                                               ; preds = %16
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = load i64, ptr %12, align 8, !tbaa !9
  %24 = getelementptr inbounds float, ptr %22, i64 %23
  %25 = load float, ptr %24, align 4, !tbaa !11
  %26 = load ptr, ptr %7, align 8, !tbaa !5
  %27 = load i64, ptr %12, align 8, !tbaa !9
  %28 = getelementptr inbounds float, ptr %26, i64 %27
  %29 = load float, ptr %28, align 4, !tbaa !11
  %30 = fsub float %25, %29
  %31 = load ptr, ptr %8, align 8, !tbaa !5
  %32 = load i64, ptr %12, align 8, !tbaa !9
  %33 = getelementptr inbounds float, ptr %31, i64 %32
  store float %30, ptr %33, align 4, !tbaa !11
  br label %34

34:                                               ; preds = %21
  %35 = load i64, ptr %12, align 8, !tbaa !9
  %36 = add i64 %35, 1
  store i64 %36, ptr %12, align 8, !tbaa !9
  br label %16, !llvm.loop !13

37:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #2
  ret void
}

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 = !{!"long", !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 void @matrix_subtract_f32_naive(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1, ptr nocapture noundef writeonly %2, i64 noundef %3, i64 noundef %4) local_unnamed_addr #0 {
  %6 = ptrtoint ptr %1 to i64
  %7 = ptrtoint ptr %0 to i64
  %8 = ptrtoint ptr %2 to i64
  %9 = mul i64 %4, %3
  %.not = icmp eq i64 %9, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %5
  %min.iters.check = icmp ult i64 %9, 8
  br i1 %min.iters.check, label %.lr.ph.preheader15, label %vector.memcheck

.lr.ph.preheader15:                               ; preds = %middle.block, %vector.memcheck, %.lr.ph.preheader
  %.010.ph = phi i64 [ 0, %vector.memcheck ], [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %xtraiter = and i64 %9, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol

.lr.ph.prol:                                      ; preds = %.lr.ph.preheader15, %.lr.ph.prol
  %.010.prol = phi i64 [ %16, %.lr.ph.prol ], [ %.010.ph, %.lr.ph.preheader15 ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader15 ]
  %10 = getelementptr inbounds float, ptr %0, i64 %.010.prol
  %11 = load float, ptr %10, align 4, !tbaa !5
  %12 = getelementptr inbounds float, ptr %1, i64 %.010.prol
  %13 = load float, ptr %12, align 4, !tbaa !5
  %14 = fsub float %11, %13
  %15 = getelementptr inbounds float, ptr %2, i64 %.010.prol
  store float %14, ptr %15, align 4, !tbaa !5
  %16 = add nuw i64 %.010.prol, 1
  %prol.iter.next = add i64 %prol.iter, 1
  %prol.iter.cmp.not = icmp eq i64 %prol.iter.next, %xtraiter
  br i1 %prol.iter.cmp.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol, !llvm.loop !9

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader15
  %.010.unr = phi i64 [ %.010.ph, %.lr.ph.preheader15 ], [ %16, %.lr.ph.prol ]
  %17 = sub i64 %.010.ph, %9
  %18 = icmp ugt i64 %17, -4
  br i1 %18, label %._crit_edge, label %.lr.ph

vector.memcheck:                                  ; preds = %.lr.ph.preheader
  %19 = sub i64 %8, %7
  %diff.check = icmp ult i64 %19, 32
  %20 = sub i64 %8, %6
  %diff.check11 = icmp ult i64 %20, 32
  %conflict.rdx = or i1 %diff.check, %diff.check11
  br i1 %conflict.rdx, label %.lr.ph.preheader15, label %vector.ph

vector.ph:                                        ; preds = %vector.memcheck
  %n.vec = and i64 %9, -8
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %21 = getelementptr inbounds float, ptr %0, i64 %index
  %22 = getelementptr inbounds i8, ptr %21, i64 16
  %wide.load = load <4 x float>, ptr %21, align 4, !tbaa !5
  %wide.load12 = load <4 x float>, ptr %22, align 4, !tbaa !5
  %23 = getelementptr inbounds float, ptr %1, i64 %index
  %24 = getelementptr inbounds i8, ptr %23, i64 16
  %wide.load13 = load <4 x float>, ptr %23, align 4, !tbaa !5
  %wide.load14 = load <4 x float>, ptr %24, align 4, !tbaa !5
  %25 = fsub <4 x float> %wide.load, %wide.load13
  %26 = fsub <4 x float> %wide.load12, %wide.load14
  %27 = getelementptr inbounds float, ptr %2, i64 %index
  %28 = getelementptr inbounds i8, ptr %27, i64 16
  store <4 x float> %25, ptr %27, align 4, !tbaa !5
  store <4 x float> %26, ptr %28, align 4, !tbaa !5
  %index.next = add nuw i64 %index, 8
  %29 = icmp eq i64 %index.next, %n.vec
  br i1 %29, label %middle.block, label %vector.body, !llvm.loop !11

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %9, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader15

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %middle.block, %5
  ret void

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %.010 = phi i64 [ %57, %.lr.ph ], [ %.010.unr, %.lr.ph.prol.loopexit ]
  %30 = getelementptr inbounds float, ptr %0, i64 %.010
  %31 = load float, ptr %30, align 4, !tbaa !5
  %32 = getelementptr inbounds float, ptr %1, i64 %.010
  %33 = load float, ptr %32, align 4, !tbaa !5
  %34 = fsub float %31, %33
  %35 = getelementptr inbounds float, ptr %2, i64 %.010
  store float %34, ptr %35, align 4, !tbaa !5
  %36 = add nuw i64 %.010, 1
  %37 = getelementptr inbounds float, ptr %0, i64 %36
  %38 = load float, ptr %37, align 4, !tbaa !5
  %39 = getelementptr inbounds float, ptr %1, i64 %36
  %40 = load float, ptr %39, align 4, !tbaa !5
  %41 = fsub float %38, %40
  %42 = getelementptr inbounds float, ptr %2, i64 %36
  store float %41, ptr %42, align 4, !tbaa !5
  %43 = add nuw i64 %.010, 2
  %44 = getelementptr inbounds float, ptr %0, i64 %43
  %45 = load float, ptr %44, align 4, !tbaa !5
  %46 = getelementptr inbounds float, ptr %1, i64 %43
  %47 = load float, ptr %46, align 4, !tbaa !5
  %48 = fsub float %45, %47
  %49 = getelementptr inbounds float, ptr %2, i64 %43
  store float %48, ptr %49, align 4, !tbaa !5
  %50 = add nuw i64 %.010, 3
  %51 = getelementptr inbounds float, ptr %0, i64 %50
  %52 = load float, ptr %51, align 4, !tbaa !5
  %53 = getelementptr inbounds float, ptr %1, i64 %50
  %54 = load float, ptr %53, align 4, !tbaa !5
  %55 = fsub float %52, %54
  %56 = getelementptr inbounds float, ptr %2, i64 %50
  store float %55, ptr %56, align 4, !tbaa !5
  %57 = add nuw i64 %.010, 4
  %exitcond.not.3 = icmp eq i64 %57, %9
  br i1 %exitcond.not.3, label %._crit_edge, label %.lr.ph, !llvm.loop !15
}

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" }

!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.unroll.disable"}
!11 = distinct !{!11, !12, !13, !14}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!"llvm.loop.isvectorized", i32 1}
!14 = !{!"llvm.loop.unroll.runtime.disable"}
!15 = distinct !{!15, !12, !13}


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