; LLVM IR from HarshCasper/NeoAlgo :: C-Plus-Plus/math/matrix_addition.ll (Z10matrix_addPA10_iS0_S0_iiii)

; 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: mustprogress nounwind uwtable
define dso_local void @_Z10matrix_addPA10_iS0_S0_iiii(ptr noundef %0, ptr noundef %1, ptr noundef %2, i32 noundef %3, i32 noundef %4, i32 noundef %5, i32 noundef %6) #1 {
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  %16 = alloca i32, align 4
  %17 = alloca i32, align 4
  store ptr %0, ptr %8, align 8, !tbaa !5
  store ptr %1, ptr %9, align 8, !tbaa !5
  store ptr %2, ptr %10, align 8, !tbaa !5
  store i32 %3, ptr %11, align 4, !tbaa !9
  store i32 %4, ptr %12, align 4, !tbaa !9
  store i32 %5, ptr %13, align 4, !tbaa !9
  store i32 %6, ptr %14, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #2
  store i32 0, ptr %15, align 4, !tbaa !9
  br label %18

18:                                               ; preds = %58, %7
  %19 = load i32, ptr %15, align 4, !tbaa !9
  %20 = load i32, ptr %11, align 4, !tbaa !9
  %21 = icmp slt i32 %19, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %18
  store i32 2, ptr %16, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #2
  br label %61

23:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 4, ptr %17) #2
  store i32 0, ptr %17, align 4, !tbaa !9
  br label %24

24:                                               ; preds = %54, %23
  %25 = load i32, ptr %17, align 4, !tbaa !9
  %26 = load i32, ptr %14, align 4, !tbaa !9
  %27 = icmp slt i32 %25, %26
  br i1 %27, label %29, label %28

28:                                               ; preds = %24
  store i32 5, ptr %16, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %17) #2
  br label %57

29:                                               ; preds = %24
  %30 = load ptr, ptr %9, align 8, !tbaa !5
  %31 = load i32, ptr %15, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [10 x i32], ptr %30, i64 %32
  %34 = load i32, ptr %17, align 4, !tbaa !9
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds [10 x i32], ptr %33, i64 0, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !9
  %38 = load ptr, ptr %10, align 8, !tbaa !5
  %39 = load i32, ptr %15, align 4, !tbaa !9
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds [10 x i32], ptr %38, i64 %40
  %42 = load i32, ptr %17, align 4, !tbaa !9
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds [10 x i32], ptr %41, i64 0, i64 %43
  %45 = load i32, ptr %44, align 4, !tbaa !9
  %46 = add nsw i32 %37, %45
  %47 = load ptr, ptr %8, align 8, !tbaa !5
  %48 = load i32, ptr %15, align 4, !tbaa !9
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds [10 x i32], ptr %47, i64 %49
  %51 = load i32, ptr %17, align 4, !tbaa !9
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds [10 x i32], ptr %50, i64 0, i64 %52
  store i32 %46, ptr %53, align 4, !tbaa !9
  br label %54

54:                                               ; preds = %29
  %55 = load i32, ptr %17, align 4, !tbaa !9
  %56 = add nsw i32 %55, 1
  store i32 %56, ptr %17, align 4, !tbaa !9
  br label %24, !llvm.loop !11

57:                                               ; preds = %28
  br label %58

58:                                               ; preds = %57
  %59 = load i32, ptr %15, align 4, !tbaa !9
  %60 = add nsw i32 %59, 1
  store i32 %60, ptr %15, align 4, !tbaa !9
  br label %18, !llvm.loop !13

61:                                               ; preds = %22
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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: mustprogress nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local void @_Z10matrix_addPA10_iS0_S0_iiii(ptr nocapture noundef writeonly %0, ptr nocapture noundef readonly %1, ptr nocapture noundef readonly %2, i32 noundef %3, i32 noundef %4, i32 noundef %5, i32 noundef %6) local_unnamed_addr #0 {
  %8 = icmp sgt i32 %3, 0
  %9 = icmp sgt i32 %6, 0
  %or.cond = and i1 %8, %9
  br i1 %or.cond, label %.preheader.us.preheader, label %._crit_edge17

.preheader.us.preheader:                          ; preds = %7
  %10 = ptrtoint ptr %0 to i64
  %11 = ptrtoint ptr %1 to i64
  %12 = ptrtoint ptr %2 to i64
  %wide.trip.count23 = zext nneg i32 %3 to i64
  %wide.trip.count = zext nneg i32 %6 to i64
  %13 = sub i64 %10, %11
  %14 = sub i64 %10, %12
  %min.iters.check = icmp ult i32 %6, 8
  %diff.check = icmp ult i64 %13, 32
  %diff.check25 = icmp ult i64 %14, 32
  %conflict.rdx = or i1 %diff.check, %diff.check25
  %n.vec = and i64 %wide.trip.count, 2147483640
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  %xtraiter = and i64 %wide.trip.count, 1
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  %15 = add nsw i64 %wide.trip.count, -1
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %._crit_edge.us
  %indvars.iv20 = phi i64 [ 0, %.preheader.us.preheader ], [ %indvars.iv.next21, %._crit_edge.us ]
  %brmerge = or i1 %min.iters.check, %conflict.rdx
  br i1 %brmerge, label %scalar.ph.preheader, label %vector.body

vector.body:                                      ; preds = %.preheader.us, %vector.body
  %index = phi i64 [ %index.next, %vector.body ], [ 0, %.preheader.us ]
  %16 = getelementptr inbounds [10 x i32], ptr %1, i64 %indvars.iv20, i64 %index
  %17 = getelementptr inbounds i8, ptr %16, i64 16
  %wide.load = load <4 x i32>, ptr %16, align 4, !tbaa !5
  %wide.load26 = load <4 x i32>, ptr %17, align 4, !tbaa !5
  %18 = getelementptr inbounds [10 x i32], ptr %2, i64 %indvars.iv20, i64 %index
  %19 = getelementptr inbounds i8, ptr %18, i64 16
  %wide.load27 = load <4 x i32>, ptr %18, align 4, !tbaa !5
  %wide.load28 = load <4 x i32>, ptr %19, align 4, !tbaa !5
  %20 = add nsw <4 x i32> %wide.load27, %wide.load
  %21 = add nsw <4 x i32> %wide.load28, %wide.load26
  %22 = getelementptr inbounds [10 x i32], ptr %0, i64 %indvars.iv20, i64 %index
  %23 = getelementptr inbounds i8, ptr %22, i64 16
  store <4 x i32> %20, ptr %22, align 4, !tbaa !5
  store <4 x i32> %21, ptr %23, align 4, !tbaa !5
  %index.next = add nuw i64 %index, 8
  %24 = icmp eq i64 %index.next, %n.vec
  br i1 %24, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  br i1 %cmp.n, label %._crit_edge.us, label %scalar.ph.preheader

scalar.ph.preheader:                              ; preds = %.preheader.us, %middle.block
  %indvars.iv.ph = phi i64 [ 0, %.preheader.us ], [ %n.vec, %middle.block ]
  br i1 %lcmp.mod.not, label %scalar.ph.prol.loopexit, label %scalar.ph.prol

scalar.ph.prol:                                   ; preds = %scalar.ph.preheader
  %25 = getelementptr inbounds [10 x i32], ptr %1, i64 %indvars.iv20, i64 %indvars.iv.ph
  %26 = load i32, ptr %25, align 4, !tbaa !5
  %27 = getelementptr inbounds [10 x i32], ptr %2, i64 %indvars.iv20, i64 %indvars.iv.ph
  %28 = load i32, ptr %27, align 4, !tbaa !5
  %29 = add nsw i32 %28, %26
  %30 = getelementptr inbounds [10 x i32], ptr %0, i64 %indvars.iv20, i64 %indvars.iv.ph
  store i32 %29, ptr %30, align 4, !tbaa !5
  %indvars.iv.next.prol = or disjoint i64 %indvars.iv.ph, 1
  br label %scalar.ph.prol.loopexit

scalar.ph.prol.loopexit:                          ; preds = %scalar.ph.prol, %scalar.ph.preheader
  %indvars.iv.unr = phi i64 [ %indvars.iv.ph, %scalar.ph.preheader ], [ %indvars.iv.next.prol, %scalar.ph.prol ]
  %31 = icmp eq i64 %indvars.iv.ph, %15
  br i1 %31, label %._crit_edge.us, label %scalar.ph

scalar.ph:                                        ; preds = %scalar.ph.prol.loopexit, %scalar.ph
  %indvars.iv = phi i64 [ %indvars.iv.next.1, %scalar.ph ], [ %indvars.iv.unr, %scalar.ph.prol.loopexit ]
  %32 = getelementptr inbounds [10 x i32], ptr %1, i64 %indvars.iv20, i64 %indvars.iv
  %33 = load i32, ptr %32, align 4, !tbaa !5
  %34 = getelementptr inbounds [10 x i32], ptr %2, i64 %indvars.iv20, i64 %indvars.iv
  %35 = load i32, ptr %34, align 4, !tbaa !5
  %36 = add nsw i32 %35, %33
  %37 = getelementptr inbounds [10 x i32], ptr %0, i64 %indvars.iv20, i64 %indvars.iv
  store i32 %36, ptr %37, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %38 = getelementptr inbounds [10 x i32], ptr %1, i64 %indvars.iv20, i64 %indvars.iv.next
  %39 = load i32, ptr %38, align 4, !tbaa !5
  %40 = getelementptr inbounds [10 x i32], ptr %2, i64 %indvars.iv20, i64 %indvars.iv.next
  %41 = load i32, ptr %40, align 4, !tbaa !5
  %42 = add nsw i32 %41, %39
  %43 = getelementptr inbounds [10 x i32], ptr %0, i64 %indvars.iv20, i64 %indvars.iv.next
  store i32 %42, ptr %43, align 4, !tbaa !5
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %exitcond.not.1 = icmp eq i64 %indvars.iv.next.1, %wide.trip.count
  br i1 %exitcond.not.1, label %._crit_edge.us, label %scalar.ph, !llvm.loop !13

._crit_edge.us:                                   ; preds = %scalar.ph.prol.loopexit, %scalar.ph, %middle.block
  %indvars.iv.next21 = add nuw nsw i64 %indvars.iv20, 1
  %exitcond24.not = icmp eq i64 %indvars.iv.next21, %wide.trip.count23
  br i1 %exitcond24.not, label %._crit_edge17, label %.preheader.us, !llvm.loop !14

._crit_edge17:                                    ; preds = %._crit_edge.us, %7
  ret void
}

attributes #0 = { mustprogress 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10, !11}
!14 = distinct !{!14, !10}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass