; LLVM IR from fast-pack/FastPFOR :: src/bitpacking.ll/Z12 (fastpack32PKmPj)

; 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 @_Z12__fastpack32PKmPj(ptr noalias noundef %0, ptr noalias noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  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 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %21, %2
  %7 = load i32, ptr %5, align 4, !tbaa !9
  %8 = icmp slt i32 %7, 32
  br i1 %8, label %10, label %9

9:                                                ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %24

10:                                               ; preds = %6
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds i64, ptr %11, i64 %13
  %15 = load i64, ptr %14, align 8, !tbaa !11
  %16 = trunc i64 %15 to i32
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = load i32, ptr %5, align 4, !tbaa !9
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds i32, ptr %17, i64 %19
  store i32 %16, ptr %20, align 4, !tbaa !9
  br label %21

21:                                               ; preds = %10
  %22 = load i32, ptr %5, align 4, !tbaa !9
  %23 = add nsw i32 %22, 1
  store i32 %23, ptr %5, align 4, !tbaa !9
  br label %6, !llvm.loop !13

24:                                               ; preds = %9
  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 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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 nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local void @_Z12__fastpack32PKmPj(ptr noalias nocapture noundef readonly %0, ptr noalias nocapture noundef writeonly %1) local_unnamed_addr #0 {
  %3 = load <4 x i64>, ptr %0, align 8, !tbaa !5
  %4 = trunc <4 x i64> %3 to <4 x i32>
  store <4 x i32> %4, ptr %1, align 4, !tbaa !9
  %5 = getelementptr inbounds i8, ptr %0, i64 32
  %6 = getelementptr inbounds i8, ptr %1, i64 16
  %7 = load <4 x i64>, ptr %5, align 8, !tbaa !5
  %8 = trunc <4 x i64> %7 to <4 x i32>
  store <4 x i32> %8, ptr %6, align 4, !tbaa !9
  %9 = getelementptr inbounds i8, ptr %0, i64 64
  %10 = getelementptr inbounds i8, ptr %1, i64 32
  %11 = load <4 x i64>, ptr %9, align 8, !tbaa !5
  %12 = trunc <4 x i64> %11 to <4 x i32>
  store <4 x i32> %12, ptr %10, align 4, !tbaa !9
  %13 = getelementptr inbounds i8, ptr %0, i64 96
  %14 = getelementptr inbounds i8, ptr %1, i64 48
  %15 = load <4 x i64>, ptr %13, align 8, !tbaa !5
  %16 = trunc <4 x i64> %15 to <4 x i32>
  store <4 x i32> %16, ptr %14, align 4, !tbaa !9
  %17 = getelementptr inbounds i8, ptr %0, i64 128
  %18 = getelementptr inbounds i8, ptr %1, i64 64
  %19 = load <4 x i64>, ptr %17, align 8, !tbaa !5
  %20 = trunc <4 x i64> %19 to <4 x i32>
  store <4 x i32> %20, ptr %18, align 4, !tbaa !9
  %21 = getelementptr inbounds i8, ptr %0, i64 160
  %22 = getelementptr inbounds i8, ptr %1, i64 80
  %23 = load <4 x i64>, ptr %21, align 8, !tbaa !5
  %24 = trunc <4 x i64> %23 to <4 x i32>
  store <4 x i32> %24, ptr %22, align 4, !tbaa !9
  %25 = getelementptr inbounds i8, ptr %0, i64 192
  %26 = getelementptr inbounds i8, ptr %1, i64 96
  %27 = load <4 x i64>, ptr %25, align 8, !tbaa !5
  %28 = trunc <4 x i64> %27 to <4 x i32>
  store <4 x i32> %28, ptr %26, align 4, !tbaa !9
  %29 = getelementptr inbounds i8, ptr %0, i64 224
  %30 = getelementptr inbounds i8, ptr %1, i64 112
  %31 = load <4 x i64>, ptr %29, align 8, !tbaa !5
  %32 = trunc <4 x i64> %31 to <4 x i32>
  store <4 x i32> %32, ptr %30, align 4, !tbaa !9
  ret void
}

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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}


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