; 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"

; 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
declare dso_local void @displaymatrix(ptr noundef, i32 noundef, i32 noundef) #1

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

10:                                               ; preds = %38, %3
  %11 = load i32, ptr %7, align 4, !tbaa !9
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = icmp slt i32 %11, %12
  br i1 %13, label %14, label %41

14:                                               ; preds = %10
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %34, %14
  %16 = load i32, ptr %8, align 4, !tbaa !9
  %17 = load i32, ptr %6, align 4, !tbaa !9
  %18 = icmp slt i32 %16, %17
  br i1 %18, label %19, label %37

19:                                               ; preds = %15
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = load i32, ptr %7, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [100 x i32], ptr %20, i64 %22
  %24 = load i32, ptr %8, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [100 x i32], ptr %23, i64 0, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !9
  %28 = load i32, ptr %8, align 4, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [100 x [100 x i32]], ptr %9, i64 0, i64 %29
  %31 = load i32, ptr %7, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [100 x i32], ptr %30, i64 0, i64 %32
  store i32 %27, ptr %33, align 4, !tbaa !9
  br label %34

34:                                               ; preds = %19
  %35 = load i32, ptr %8, align 4, !tbaa !9
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %8, align 4, !tbaa !9
  br label %15, !llvm.loop !11

37:                                               ; preds = %15
  br label %38

38:                                               ; preds = %37
  %39 = load i32, ptr %7, align 4, !tbaa !9
  %40 = add nsw i32 %39, 1
  store i32 %40, ptr %7, align 4, !tbaa !9
  br label %10, !llvm.loop !13

41:                                               ; preds = %10
  %42 = getelementptr inbounds [100 x [100 x i32]], ptr %9, i64 0, i64 0
  %43 = load i32, ptr %6, align 4, !tbaa !9
  %44 = load i32, ptr %5, align 4, !tbaa !9
  call void @displaymatrix(ptr noundef %42, i32 noundef %43, i32 noundef %44)
  call void @llvm.lifetime.end.p0(i64 40000, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #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 = !{!"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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local void @displaymatrix(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @transpose(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #1 {
  %4 = alloca [100 x [100 x i32]], align 16
  call void @llvm.lifetime.start.p0(i64 40000, ptr nonnull %4) #2
  %5 = icmp sgt i32 %1, 0
  %6 = icmp sgt i32 %2, 0
  %or.cond = and i1 %5, %6
  br i1 %or.cond, label %.preheader.us.preheader, label %._crit_edge16

.preheader.us.preheader:                          ; preds = %3
  %wide.trip.count22 = zext nneg i32 %1 to i64
  %wide.trip.count = zext nneg i32 %2 to i64
  %xtraiter = and i64 %wide.trip.count, 3
  %7 = icmp ult i32 %2, 4
  %unroll_iter = and i64 %wide.trip.count, 2147483644
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %._crit_edge.us
  %indvars.iv19 = phi i64 [ 0, %.preheader.us.preheader ], [ %indvars.iv.next20, %._crit_edge.us ]
  br i1 %7, label %._crit_edge.us.unr-lcssa, label %.preheader.us.new

.preheader.us.new:                                ; preds = %.preheader.us, %.preheader.us.new
  %indvars.iv = phi i64 [ %indvars.iv.next.3, %.preheader.us.new ], [ 0, %.preheader.us ]
  %niter = phi i64 [ %niter.next.3, %.preheader.us.new ], [ 0, %.preheader.us ]
  %8 = getelementptr inbounds [100 x i32], ptr %0, i64 %indvars.iv19, i64 %indvars.iv
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %10 = getelementptr inbounds [100 x [100 x i32]], ptr %4, i64 0, i64 %indvars.iv, i64 %indvars.iv19
  store i32 %9, ptr %10, align 4, !tbaa !5
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %11 = getelementptr inbounds [100 x i32], ptr %0, i64 %indvars.iv19, i64 %indvars.iv.next
  %12 = load i32, ptr %11, align 4, !tbaa !5
  %13 = getelementptr inbounds [100 x [100 x i32]], ptr %4, i64 0, i64 %indvars.iv.next, i64 %indvars.iv19
  store i32 %12, ptr %13, align 4, !tbaa !5
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %14 = getelementptr inbounds [100 x i32], ptr %0, i64 %indvars.iv19, i64 %indvars.iv.next.1
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = getelementptr inbounds [100 x [100 x i32]], ptr %4, i64 0, i64 %indvars.iv.next.1, i64 %indvars.iv19
  store i32 %15, ptr %16, align 4, !tbaa !5
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %17 = getelementptr inbounds [100 x i32], ptr %0, i64 %indvars.iv19, i64 %indvars.iv.next.2
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = getelementptr inbounds [100 x [100 x i32]], ptr %4, i64 0, i64 %indvars.iv.next.2, i64 %indvars.iv19
  store i32 %18, ptr %19, align 4, !tbaa !5
  %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.us.unr-lcssa, label %.preheader.us.new, !llvm.loop !9

._crit_edge.us.unr-lcssa:                         ; preds = %.preheader.us.new, %.preheader.us
  %indvars.iv.unr = phi i64 [ 0, %.preheader.us ], [ %indvars.iv.next.3, %.preheader.us.new ]
  br i1 %lcmp.mod.not, label %._crit_edge.us, label %.epil.preheader

.epil.preheader:                                  ; preds = %._crit_edge.us.unr-lcssa, %.epil.preheader
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.epil.preheader ], [ %indvars.iv.unr, %._crit_edge.us.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.epil.preheader ], [ 0, %._crit_edge.us.unr-lcssa ]
  %20 = getelementptr inbounds [100 x i32], ptr %0, i64 %indvars.iv19, i64 %indvars.iv.epil
  %21 = load i32, ptr %20, align 4, !tbaa !5
  %22 = getelementptr inbounds [100 x [100 x i32]], ptr %4, i64 0, i64 %indvars.iv.epil, i64 %indvars.iv19
  store i32 %21, ptr %22, align 4, !tbaa !5
  %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.us, label %.epil.preheader, !llvm.loop !11

._crit_edge.us:                                   ; preds = %.epil.preheader, %._crit_edge.us.unr-lcssa
  %indvars.iv.next20 = add nuw nsw i64 %indvars.iv19, 1
  %exitcond23.not = icmp eq i64 %indvars.iv.next20, %wide.trip.count22
  br i1 %exitcond23.not, label %._crit_edge16, label %.preheader.us, !llvm.loop !13

._crit_edge16:                                    ; preds = %._crit_edge.us, %3
  call void @displaymatrix(ptr noundef nonnull %4, i32 noundef %2, i32 noundef %1)
  call void @llvm.lifetime.end.p0(i64 40000, ptr nonnull %4) #2
  ret void
}

attributes #0 = { mustprogress 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 = !{!"int", !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"}
!13 = distinct !{!13, !10}


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