; LLVM IR from aferikoglou/GenHLSOptimizer :: dataset/rodinia_nw_2_pipeline_0/nw.ll (Z14needwun_tilingPcS_S_S_)

; 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: mustprogress nounwind uwtable
declare dso_local void @_Z7needwunPcS_S_S_(ptr noundef, ptr noundef, ptr noundef, 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: mustprogress nounwind uwtable
define dso_local void @_Z14needwun_tilingPcS_S_S_(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  store ptr %3, ptr %8, align 8, !tbaa !5
  br label %10

10:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %36, %10
  %12 = load i32, ptr %9, align 4, !tbaa !9
  %13 = icmp slt i32 %12, 4
  br i1 %13, label %15, label %14

14:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  br label %39

15:                                               ; preds = %11
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = load i32, ptr %9, align 4, !tbaa !9
  %18 = mul nsw i32 %17, 128
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds i8, ptr %16, i64 %19
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = load i32, ptr %9, align 4, !tbaa !9
  %23 = mul nsw i32 %22, 128
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds i8, ptr %21, i64 %24
  %26 = load ptr, ptr %7, align 8, !tbaa !5
  %27 = load i32, ptr %9, align 4, !tbaa !9
  %28 = mul nsw i32 %27, 256
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds i8, ptr %26, i64 %29
  %31 = load ptr, ptr %8, align 8, !tbaa !5
  %32 = load i32, ptr %9, align 4, !tbaa !9
  %33 = mul nsw i32 %32, 256
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds i8, ptr %31, i64 %34
  call void @_Z7needwunPcS_S_S_(ptr noundef %20, ptr noundef %25, ptr noundef %30, ptr noundef %35)
  br label %36

36:                                               ; preds = %15
  %37 = load i32, ptr %9, align 4, !tbaa !9
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %9, align 4, !tbaa !9
  br label %11, !llvm.loop !11

39:                                               ; preds = %14
  ret void
}

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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"}


; 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 nounwind uwtable
declare dso_local void @_Z7needwunPcS_S_S_(ptr noundef, ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z14needwun_tilingPcS_S_S_(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3) local_unnamed_addr #0 {
  tail call void @_Z7needwunPcS_S_S_(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3)
  %5 = getelementptr inbounds i8, ptr %0, i64 128
  %6 = getelementptr inbounds i8, ptr %1, i64 128
  %7 = getelementptr inbounds i8, ptr %2, i64 256
  %8 = getelementptr inbounds i8, ptr %3, i64 256
  tail call void @_Z7needwunPcS_S_S_(ptr noundef nonnull %5, ptr noundef nonnull %6, ptr noundef nonnull %7, ptr noundef nonnull %8)
  %9 = getelementptr inbounds i8, ptr %0, i64 256
  %10 = getelementptr inbounds i8, ptr %1, i64 256
  %11 = getelementptr inbounds i8, ptr %2, i64 512
  %12 = getelementptr inbounds i8, ptr %3, i64 512
  tail call void @_Z7needwunPcS_S_S_(ptr noundef nonnull %9, ptr noundef nonnull %10, ptr noundef nonnull %11, ptr noundef nonnull %12)
  %13 = getelementptr inbounds i8, ptr %0, i64 384
  %14 = getelementptr inbounds i8, ptr %1, i64 384
  %15 = getelementptr inbounds i8, ptr %2, i64 768
  %16 = getelementptr inbounds i8, ptr %3, i64 768
  tail call void @_Z7needwunPcS_S_S_(ptr noundef nonnull %13, ptr noundef nonnull %14, ptr noundef nonnull %15, ptr noundef nonnull %16)
  ret void
}

attributes #0 = { 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" }

!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)"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,SROAPass,SimplifyCFGPass,TailCallElimPass