; LLVM IR from fast-pack/SIMDCompressionAndIntersection :: src/integratedbitpacking.ll/ZN18SIMDCompressionLib23 (integratedfastunpack0EjPKjPj)

; 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
define dso_local void @_ZN18SIMDCompressionLib23__integratedfastunpack0EjPKjPj(i32 noundef %0, ptr noalias noundef %1, ptr noalias noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %16, %3
  %9 = load i32, ptr %7, align 4, !tbaa !5
  %10 = icmp ult i32 %9, 32
  br i1 %10, label %12, label %11

11:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %19

12:                                               ; preds = %8
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = load ptr, ptr %6, align 8, !tbaa !9
  %15 = getelementptr inbounds i32, ptr %14, i32 1
  store ptr %15, ptr %6, align 8, !tbaa !9
  store i32 %13, ptr %14, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %12
  %17 = load i32, ptr %7, align 4, !tbaa !5
  %18 = add i32 %17, 1
  store i32 %18, ptr %7, align 4, !tbaa !5
  br label %8, !llvm.loop !11

19:                                               ; preds = %11
  ret void
}

; 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

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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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 nofree norecurse nosync nounwind willreturn memory(argmem: write) uwtable
define dso_local void @_ZN18SIMDCompressionLib23__integratedfastunpack0EjPKjPj(i32 noundef %0, ptr noalias nocapture noundef readnone %1, ptr noalias nocapture noundef writeonly %2) local_unnamed_addr #0 {
  %4 = getelementptr inbounds i8, ptr %2, i64 16
  %5 = insertelement <4 x i32> poison, i32 %0, i64 0
  %6 = shufflevector <4 x i32> %5, <4 x i32> poison, <4 x i32> zeroinitializer
  store <4 x i32> %6, ptr %2, align 4, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %2, i64 32
  store <4 x i32> %6, ptr %4, align 4, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %2, i64 48
  store <4 x i32> %6, ptr %7, align 4, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %2, i64 64
  store <4 x i32> %6, ptr %8, align 4, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %2, i64 80
  store <4 x i32> %6, ptr %9, align 4, !tbaa !5
  %11 = getelementptr inbounds i8, ptr %2, i64 96
  store <4 x i32> %6, ptr %10, align 4, !tbaa !5
  %12 = getelementptr inbounds i8, ptr %2, i64 112
  store <4 x i32> %6, ptr %11, align 4, !tbaa !5
  store <4 x i32> %6, ptr %12, align 4, !tbaa !5
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) 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: GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,SimplifyCFGPass