; LLVM IR from fast-pack/FastPFOR :: src/bitpackingunaligned.ll/Z34 (fastunalignedpackwithoutmask16_8PKjPh)

; 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 noundef ptr @_Z34__fastunalignedpackwithoutmask16_8PKjPh(ptr noalias noundef %0, ptr noalias noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %6, ptr %5, align 8, !tbaa !5
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = load i32, ptr %7, align 4, !tbaa !9
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  store i32 %8, ptr %9, align 4, !tbaa !9
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = getelementptr inbounds i32, ptr %10, i32 1
  store ptr %11, ptr %3, align 8, !tbaa !5
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = load i32, ptr %12, align 4, !tbaa !9
  %14 = shl i32 %13, 16
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = load i32, ptr %15, align 4, !tbaa !9
  %17 = or i32 %16, %14
  store i32 %17, ptr %15, align 4, !tbaa !9
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = getelementptr inbounds i32, ptr %18, i32 1
  store ptr %19, ptr %5, align 8, !tbaa !5
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = getelementptr inbounds i32, ptr %20, i32 1
  store ptr %21, ptr %3, align 8, !tbaa !5
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = load i32, ptr %22, align 4, !tbaa !9
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  store i32 %23, ptr %24, align 4, !tbaa !9
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = getelementptr inbounds i32, ptr %25, i32 1
  store ptr %26, ptr %3, align 8, !tbaa !5
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = load i32, ptr %27, align 4, !tbaa !9
  %29 = shl i32 %28, 16
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = load i32, ptr %30, align 4, !tbaa !9
  %32 = or i32 %31, %29
  store i32 %32, ptr %30, align 4, !tbaa !9
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = getelementptr inbounds i32, ptr %33, i32 1
  store ptr %34, ptr %5, align 8, !tbaa !5
  %35 = load ptr, ptr %3, align 8, !tbaa !5
  %36 = getelementptr inbounds i32, ptr %35, i32 1
  store ptr %36, ptr %3, align 8, !tbaa !5
  %37 = load ptr, ptr %3, align 8, !tbaa !5
  %38 = load i32, ptr %37, align 4, !tbaa !9
  %39 = load ptr, ptr %5, align 8, !tbaa !5
  store i32 %38, ptr %39, align 4, !tbaa !9
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = getelementptr inbounds i32, ptr %40, i32 1
  store ptr %41, ptr %3, align 8, !tbaa !5
  %42 = load ptr, ptr %3, align 8, !tbaa !5
  %43 = load i32, ptr %42, align 4, !tbaa !9
  %44 = shl i32 %43, 16
  %45 = load ptr, ptr %5, align 8, !tbaa !5
  %46 = load i32, ptr %45, align 4, !tbaa !9
  %47 = or i32 %46, %44
  store i32 %47, ptr %45, align 4, !tbaa !9
  %48 = load ptr, ptr %5, align 8, !tbaa !5
  %49 = getelementptr inbounds i32, ptr %48, i32 1
  store ptr %49, ptr %5, align 8, !tbaa !5
  %50 = load ptr, ptr %3, align 8, !tbaa !5
  %51 = getelementptr inbounds i32, ptr %50, i32 1
  store ptr %51, ptr %3, align 8, !tbaa !5
  %52 = load ptr, ptr %3, align 8, !tbaa !5
  %53 = load i32, ptr %52, align 4, !tbaa !9
  %54 = load ptr, ptr %5, align 8, !tbaa !5
  store i32 %53, ptr %54, align 4, !tbaa !9
  %55 = load ptr, ptr %3, align 8, !tbaa !5
  %56 = getelementptr inbounds i32, ptr %55, i32 1
  store ptr %56, ptr %3, align 8, !tbaa !5
  %57 = load ptr, ptr %3, align 8, !tbaa !5
  %58 = load i32, ptr %57, align 4, !tbaa !9
  %59 = shl i32 %58, 16
  %60 = load ptr, ptr %5, align 8, !tbaa !5
  %61 = load i32, ptr %60, align 4, !tbaa !9
  %62 = or i32 %61, %59
  store i32 %62, ptr %60, align 4, !tbaa !9
  %63 = load ptr, ptr %5, align 8, !tbaa !5
  %64 = getelementptr inbounds i32, ptr %63, i32 1
  store ptr %64, ptr %5, align 8, !tbaa !5
  %65 = load ptr, ptr %3, align 8, !tbaa !5
  %66 = getelementptr inbounds i32, ptr %65, i32 1
  store ptr %66, ptr %3, align 8, !tbaa !5
  %67 = load ptr, ptr %5, align 8, !tbaa !5
  %68 = getelementptr inbounds i8, ptr %67, i64 0
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret ptr %68
}

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}


; 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 willreturn memory(argmem: readwrite) uwtable
define dso_local noundef nonnull ptr @_Z34__fastunalignedpackwithoutmask16_8PKjPh(ptr noalias nocapture noundef readonly %0, ptr noalias noundef writeonly %1) local_unnamed_addr #0 {
  %3 = load i32, ptr %0, align 4, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 4
  %5 = load i32, ptr %4, align 4, !tbaa !5
  %6 = shl i32 %5, 16
  %7 = or i32 %6, %3
  store i32 %7, ptr %1, align 4, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %1, i64 4
  %9 = getelementptr inbounds i8, ptr %0, i64 8
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = getelementptr inbounds i8, ptr %0, i64 12
  %12 = load i32, ptr %11, align 4, !tbaa !5
  %13 = shl i32 %12, 16
  %14 = or i32 %13, %10
  store i32 %14, ptr %8, align 4, !tbaa !5
  %15 = getelementptr inbounds i8, ptr %1, i64 8
  %16 = getelementptr inbounds i8, ptr %0, i64 16
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %18 = getelementptr inbounds i8, ptr %0, i64 20
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %20 = shl i32 %19, 16
  %21 = or i32 %20, %17
  store i32 %21, ptr %15, align 4, !tbaa !5
  %22 = getelementptr inbounds i8, ptr %1, i64 12
  %23 = getelementptr inbounds i8, ptr %0, i64 24
  %24 = load i32, ptr %23, align 4, !tbaa !5
  %25 = getelementptr inbounds i8, ptr %0, i64 28
  %26 = load i32, ptr %25, align 4, !tbaa !5
  %27 = shl i32 %26, 16
  %28 = or i32 %27, %24
  store i32 %28, ptr %22, align 4, !tbaa !5
  %29 = getelementptr inbounds i8, ptr %1, i64 16
  ret ptr %29
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn 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"}


; Effective O3 passes: DSEPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass