; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 30. CPP Programs (matrixmul)

; 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"

@.str.4 = external hidden unnamed_addr constant [18 x i8], align 1

declare i32 @printf(ptr noundef, ...) #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 willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare dso_local void @displaymatrix(ptr noundef, i32 noundef, i32 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local void @addmatrix(ptr noundef %0, ptr noundef %1, i32 noundef %2, i32 noundef %3) #2 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca [100 x [100 x i32]], align 16
  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 i32 %3, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.start.p0(i64 40000, ptr %11) #3
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %12

12:                                               ; preds = %49, %4
  %13 = load i32, ptr %9, align 4, !tbaa !9
  %14 = load i32, ptr %7, align 4, !tbaa !9
  %15 = icmp slt i32 %13, %14
  br i1 %15, label %16, label %52

16:                                               ; preds = %12
  store i32 0, ptr %10, align 4, !tbaa !9
  br label %17

17:                                               ; preds = %45, %16
  %18 = load i32, ptr %10, align 4, !tbaa !9
  %19 = load i32, ptr %8, align 4, !tbaa !9
  %20 = icmp slt i32 %18, %19
  br i1 %20, label %21, label %48

21:                                               ; preds = %17
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = load i32, ptr %9, align 4, !tbaa !9
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds [100 x i32], ptr %22, i64 %24
  %26 = load i32, ptr %10, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds [100 x i32], ptr %25, i64 0, i64 %27
  %29 = load i32, ptr %28, align 4, !tbaa !9
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  %31 = load i32, ptr %9, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [100 x i32], ptr %30, i64 %32
  %34 = load i32, ptr %10, align 4, !tbaa !9
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds [100 x i32], ptr %33, i64 0, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !9
  %38 = add nsw i32 %29, %37
  %39 = load i32, ptr %9, align 4, !tbaa !9
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds [100 x [100 x i32]], ptr %11, i64 0, i64 %40
  %42 = load i32, ptr %10, align 4, !tbaa !9
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds [100 x i32], ptr %41, i64 0, i64 %43
  store i32 %38, ptr %44, align 4, !tbaa !9
  br label %45

45:                                               ; preds = %21
  %46 = load i32, ptr %10, align 4, !tbaa !9
  %47 = add nsw i32 %46, 1
  store i32 %47, ptr %10, align 4, !tbaa !9
  br label %17, !llvm.loop !11

48:                                               ; preds = %17
  br label %49

49:                                               ; preds = %48
  %50 = load i32, ptr %9, align 4, !tbaa !9
  %51 = add nsw i32 %50, 1
  store i32 %51, ptr %9, align 4, !tbaa !9
  br label %12, !llvm.loop !13

52:                                               ; preds = %12
  %53 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  %54 = getelementptr inbounds [100 x [100 x i32]], ptr %11, i64 0, i64 0
  %55 = load i32, ptr %7, align 4, !tbaa !9
  %56 = load i32, ptr %8, align 4, !tbaa !9
  call void @displaymatrix(ptr noundef %54, i32 noundef %55, i32 noundef %56)
  call void @llvm.lifetime.end.p0(i64 40000, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  ret void
}

attributes #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 = { 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 #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 = 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"

@.str.4 = external hidden unnamed_addr constant [18 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; 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 willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare dso_local void @displaymatrix(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local void @addmatrix(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #2 {
  %5 = alloca [100 x [100 x i32]], align 16
  call void @llvm.lifetime.start.p0(i64 40000, ptr nonnull %5) #3
  %6 = icmp sgt i32 %2, 0
  %7 = icmp sgt i32 %3, 0
  %or.cond = and i1 %6, %7
  br i1 %or.cond, label %.preheader.us.preheader, label %._crit_edge19

.preheader.us.preheader:                          ; preds = %4
  %wide.trip.count25 = zext nneg i32 %2 to i64
  %wide.trip.count = zext nneg i32 %3 to i64
  %min.iters.check = icmp ult i32 %3, 8
  %n.vec = and i64 %wide.trip.count, 2147483640
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %._crit_edge.us
  %indvars.iv22 = phi i64 [ 0, %.preheader.us.preheader ], [ %indvars.iv.next23, %._crit_edge.us ]
  br i1 %min.iters.check, label %scalar.ph.preheader, label %vector.body

vector.body:                                      ; preds = %.preheader.us, %vector.body
  %index = phi i64 [ %index.next, %vector.body ], [ 0, %.preheader.us ]
  %8 = getelementptr inbounds [100 x i32], ptr %0, i64 %indvars.iv22, i64 %index
  %9 = getelementptr inbounds i8, ptr %8, i64 16
  %wide.load = load <4 x i32>, ptr %8, align 4, !tbaa !5
  %wide.load27 = load <4 x i32>, ptr %9, align 4, !tbaa !5
  %10 = getelementptr inbounds [100 x i32], ptr %1, i64 %indvars.iv22, i64 %index
  %11 = getelementptr inbounds i8, ptr %10, i64 16
  %wide.load28 = load <4 x i32>, ptr %10, align 4, !tbaa !5
  %wide.load29 = load <4 x i32>, ptr %11, align 4, !tbaa !5
  %12 = add nsw <4 x i32> %wide.load28, %wide.load
  %13 = add nsw <4 x i32> %wide.load29, %wide.load27
  %14 = getelementptr inbounds [100 x [100 x i32]], ptr %5, i64 0, i64 %indvars.iv22, i64 %index
  %15 = getelementptr inbounds i8, ptr %14, i64 16
  store <4 x i32> %12, ptr %14, align 16, !tbaa !5
  store <4 x i32> %13, ptr %15, align 16, !tbaa !5
  %index.next = add nuw i64 %index, 8
  %16 = icmp eq i64 %index.next, %n.vec
  br i1 %16, 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 = %middle.block, %.preheader.us
  %indvars.iv.ph = phi i64 [ 0, %.preheader.us ], [ %n.vec, %middle.block ]
  br label %scalar.ph

scalar.ph:                                        ; preds = %scalar.ph.preheader, %scalar.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %scalar.ph ], [ %indvars.iv.ph, %scalar.ph.preheader ]
  %17 = getelementptr inbounds [100 x i32], ptr %0, i64 %indvars.iv22, i64 %indvars.iv
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = getelementptr inbounds [100 x i32], ptr %1, i64 %indvars.iv22, i64 %indvars.iv
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %21 = add nsw i32 %20, %18
  %22 = getelementptr inbounds [100 x [100 x i32]], ptr %5, i64 0, i64 %indvars.iv22, i64 %indvars.iv
  store i32 %21, ptr %22, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge.us, label %scalar.ph, !llvm.loop !13

._crit_edge.us:                                   ; preds = %scalar.ph, %middle.block
  %indvars.iv.next23 = add nuw nsw i64 %indvars.iv22, 1
  %exitcond26.not = icmp eq i64 %indvars.iv.next23, %wide.trip.count25
  br i1 %exitcond26.not, label %._crit_edge19, label %.preheader.us, !llvm.loop !14

._crit_edge19:                                    ; preds = %._crit_edge.us, %4
  %23 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4)
  call void @displaymatrix(ptr noundef nonnull %5, i32 noundef %2, i32 noundef %3)
  call void @llvm.lifetime.end.p0(i64 40000, ptr nonnull %5) #3
  ret void
}

attributes #0 = { nofree nounwind "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 = { 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/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, !12, !11}
!14 = distinct !{!14, !10}


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