; LLVM IR from jermp/2i_bench :: external/CRoaring/src/containers (bitset)

; 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"

%struct.bitset_container_s = type { i32, ptr }

; 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
define dso_local zeroext i1 @bitset_container_intersect(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.bitset_container_s, ptr %10, i32 0, i32 1
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  store ptr %12, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.bitset_container_s, ptr %13, i32 0, i32 1
  %15 = load ptr, ptr %14, align 8, !tbaa !9
  store ptr %15, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !12
  br label %16

16:                                               ; preds = %35, %2
  %17 = load i32, ptr %8, align 4, !tbaa !12
  %18 = icmp slt i32 %17, 1024
  br i1 %18, label %20, label %19

19:                                               ; preds = %16
  store i32 2, ptr %9, align 4
  br label %38

20:                                               ; preds = %16
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = load i32, ptr %8, align 4, !tbaa !12
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds i64, ptr %21, i64 %23
  %25 = load i64, ptr %24, align 8, !tbaa !13
  %26 = load ptr, ptr %7, align 8, !tbaa !5
  %27 = load i32, ptr %8, align 4, !tbaa !12
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds i64, ptr %26, i64 %28
  %30 = load i64, ptr %29, align 8, !tbaa !13
  %31 = and i64 %25, %30
  %32 = icmp ne i64 %31, 0
  br i1 %32, label %33, label %34

33:                                               ; preds = %20
  store i1 true, ptr %3, align 1
  store i32 1, ptr %9, align 4
  br label %38

34:                                               ; preds = %20
  br label %35

35:                                               ; preds = %34
  %36 = load i32, ptr %8, align 4, !tbaa !12
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %8, align 4, !tbaa !12
  br label %16, !llvm.loop !15

38:                                               ; preds = %33, %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %39 = load i32, ptr %9, align 4
  switch i32 %39, label %41 [
    i32 2, label %40
  ]

40:                                               ; preds = %38
  store i1 false, ptr %3, align 1
  store i32 1, ptr %9, align 4
  br label %41

41:                                               ; preds = %40, %38
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %42 = load i1, ptr %3, align 1
  ret i1 %42
}

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, !6, i64 8}
!10 = !{!"bitset_container_s", !11, i64 0, !6, i64 8}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"long", !7, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"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: nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local zeroext i1 @bitset_container_intersect(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %1, i64 8
  %6 = load ptr, ptr %5, align 8, !tbaa !5
  %7 = load i64, ptr %4, align 8, !tbaa !11
  %8 = load i64, ptr %6, align 8, !tbaa !11
  %9 = and i64 %8, %7
  %.not12 = icmp eq i64 %9, 0
  br i1 %.not12, label %.lr.ph, label %.critedge

.lr.ph:                                           ; preds = %2, %15
  %indvars.iv13 = phi i64 [ %indvars.iv.next.1, %15 ], [ 0, %2 ]
  %indvars.iv.next = or disjoint i64 %indvars.iv13, 1
  %10 = getelementptr inbounds i64, ptr %4, i64 %indvars.iv.next
  %11 = load i64, ptr %10, align 8, !tbaa !11
  %12 = getelementptr inbounds i64, ptr %6, i64 %indvars.iv.next
  %13 = load i64, ptr %12, align 8, !tbaa !11
  %14 = and i64 %13, %11
  %.not = icmp eq i64 %14, 0
  br i1 %.not, label %.lr.ph.1, label %.critedge, !llvm.loop !13

.lr.ph.1:                                         ; preds = %.lr.ph
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv13, 2
  %exitcond.not.1 = icmp eq i64 %indvars.iv.next.1, 1024
  br i1 %exitcond.not.1, label %.critedge.loopexit.split.loop.exit17, label %15, !llvm.loop !13

15:                                               ; preds = %.lr.ph.1
  %16 = getelementptr inbounds i64, ptr %4, i64 %indvars.iv.next.1
  %17 = load i64, ptr %16, align 8, !tbaa !11
  %18 = getelementptr inbounds i64, ptr %6, i64 %indvars.iv.next.1
  %19 = load i64, ptr %18, align 8, !tbaa !11
  %20 = and i64 %19, %17
  %.not.1 = icmp eq i64 %20, 0
  br i1 %.not.1, label %.lr.ph, label %.critedge.loopexit.split.loop.exit, !llvm.loop !13

.critedge.loopexit.split.loop.exit:               ; preds = %15
  %21 = icmp ult i64 %indvars.iv.next, 1023
  br label %.critedge

.critedge.loopexit.split.loop.exit17:             ; preds = %.lr.ph.1
  %22 = icmp ult i64 %indvars.iv.next, 1023
  br label %.critedge

.critedge:                                        ; preds = %.critedge.loopexit.split.loop.exit, %.critedge.loopexit.split.loop.exit17, %.lr.ph, %2
  %.lcssa = phi i1 [ true, %2 ], [ %21, %.critedge.loopexit.split.loop.exit ], [ %22, %.critedge.loopexit.split.loop.exit17 ], [ true, %.lr.ph ]
  ret i1 %.lcssa
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) 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, !10, i64 8}
!6 = !{!"bitset_container_s", !7, i64 0, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !8, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopRotatePass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass