; 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: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.cttz.i64(i64, i1 immarg) #1

; Function Attrs: nounwind uwtable
define dso_local zeroext i16 @bitset_container_minimum(ptr noundef %0) #2 {
  %2 = alloca i16, align 2
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %35, %1
  %9 = load i32, ptr %4, align 4, !tbaa !9
  %10 = icmp slt i32 %9, 1024
  br i1 %10, label %12, label %11

11:                                               ; preds = %8
  store i32 2, ptr %5, align 4
  br label %38

12:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %13 = load ptr, ptr %3, 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 !11
  %16 = load i32, ptr %4, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds i64, ptr %15, i64 %17
  %19 = load i64, ptr %18, align 8, !tbaa !13
  store i64 %19, ptr %6, align 8, !tbaa !13
  %20 = load i64, ptr %6, align 8, !tbaa !13
  %21 = icmp ne i64 %20, 0
  br i1 %21, label %22, label %31

22:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %23 = load i64, ptr %6, align 8, !tbaa !13
  %24 = call i64 @llvm.cttz.i64(i64 %23, i1 true)
  %25 = trunc i64 %24 to i32
  store i32 %25, ptr %7, align 4, !tbaa !9
  %26 = load i32, ptr %7, align 4, !tbaa !9
  %27 = load i32, ptr %4, align 4, !tbaa !9
  %28 = mul nsw i32 %27, 64
  %29 = add nsw i32 %26, %28
  %30 = trunc i32 %29 to i16
  store i16 %30, ptr %2, align 2
  store i32 1, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %32

31:                                               ; preds = %12
  store i32 0, ptr %5, align 4
  br label %32

32:                                               ; preds = %31, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %33 = load i32, ptr %5, align 4
  switch i32 %33, label %38 [
    i32 0, label %34
  ]

34:                                               ; preds = %32
  br label %35

35:                                               ; preds = %34
  %36 = load i32, ptr %4, align 4, !tbaa !9
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %4, align 4, !tbaa !9
  br label %8, !llvm.loop !15

38:                                               ; preds = %32, %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  %39 = load i32, ptr %5, align 4
  switch i32 %39, label %43 [
    i32 2, label %40
    i32 1, label %41
  ]

40:                                               ; preds = %38
  store i16 -1, ptr %2, align 2
  br label %41

41:                                               ; preds = %40, %38
  %42 = load i16, ptr %2, align 2
  ret i16 %42

43:                                               ; preds = %38
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { 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 #3 = { 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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 8}
!12 = !{!"bitset_container_s", !10, i64 0, !6, i64 8}
!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: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.cttz.i64(i64, i1 immarg) #0

; Function Attrs: nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local zeroext i16 @bitset_container_minimum(ptr nocapture noundef readonly %0) local_unnamed_addr #1 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  br label %4

4:                                                ; preds = %16, %1
  %indvars.iv = phi i64 [ 0, %1 ], [ %indvars.iv.next.3, %16 ]
  %5 = getelementptr inbounds i64, ptr %3, i64 %indvars.iv
  %6 = load i64, ptr %5, align 8, !tbaa !11
  %.not = icmp eq i64 %6, 0
  br i1 %.not, label %7, label %.split.loop.exit14

7:                                                ; preds = %4
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %8 = getelementptr inbounds i64, ptr %3, i64 %indvars.iv.next
  %9 = load i64, ptr %8, align 8, !tbaa !11
  %.not.1 = icmp eq i64 %9, 0
  br i1 %.not.1, label %10, label %.split.loop.exit14

10:                                               ; preds = %7
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %11 = getelementptr inbounds i64, ptr %3, i64 %indvars.iv.next.1
  %12 = load i64, ptr %11, align 8, !tbaa !11
  %.not.2 = icmp eq i64 %12, 0
  br i1 %.not.2, label %13, label %.split.loop.exit14

13:                                               ; preds = %10
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %14 = getelementptr inbounds i64, ptr %3, i64 %indvars.iv.next.2
  %15 = load i64, ptr %14, align 8, !tbaa !11
  %.not.3 = icmp eq i64 %15, 0
  br i1 %.not.3, label %16, label %.split.loop.exit14

16:                                               ; preds = %13
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %exitcond.3 = icmp eq i64 %indvars.iv.next.3, 1024
  br i1 %exitcond.3, label %.split.loop.exit, label %4, !llvm.loop !13

.split.loop.exit14:                               ; preds = %13, %10, %7, %4
  %indvars.iv.lcssa = phi i64 [ %indvars.iv, %4 ], [ %indvars.iv.next, %7 ], [ %indvars.iv.next.1, %10 ], [ %indvars.iv.next.2, %13 ]
  %.lcssa = phi i64 [ %6, %4 ], [ %9, %7 ], [ %12, %10 ], [ %15, %13 ]
  %17 = trunc i64 %indvars.iv.lcssa to i16
  %18 = tail call range(i64 0, 65) i64 @llvm.cttz.i64(i64 %.lcssa, i1 true)
  %19 = trunc nuw nsw i64 %18 to i16
  %20 = shl i16 %17, 6
  %21 = or disjoint i16 %20, %19
  br label %.split.loop.exit

.split.loop.exit:                                 ; preds = %16, %.split.loop.exit14
  %spec.select = phi i16 [ %21, %.split.loop.exit14 ], [ -1, %16 ]
  ret i16 %spec.select
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { 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: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass