; LLVM IR from daanx/mimalloc-bench :: bench/cfrac (pcfrac)

; 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: nounwind uwtable
declare dso_local void @setBit(ptr noundef, i32 noundef, i32 noundef) #0

; 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

; Function Attrs: nounwind uwtable
define dso_local ptr @newBitVector(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %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 i32 %1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = zext i32 %11 to i64
  %13 = getelementptr inbounds i8, ptr %10, i64 %12
  store ptr %13, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = zext i32 %14 to i64
  %16 = add i64 %15, 8
  %17 = sub i64 %16, 1
  %18 = udiv i64 %17, 8
  %19 = mul i64 %18, 1
  %20 = trunc i64 %19 to i32
  store i32 %20, ptr %8, align 4, !tbaa !9
  %21 = load i32, ptr %8, align 4, !tbaa !9
  %22 = zext i32 %21 to i64
  %23 = call ptr @malloc(i64 noundef %22) #5
  store ptr %23, ptr %6, align 8, !tbaa !5
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  %25 = icmp eq ptr %24, null
  br i1 %25, label %26, label %28

26:                                               ; preds = %2
  %27 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %27, ptr %3, align 8
  store i32 1, ptr %9, align 4
  br label %55

28:                                               ; preds = %2
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = load i32, ptr %8, align 4, !tbaa !9
  %31 = zext i32 %30 to i64
  call void @llvm.memset.p0.i64(ptr align 1 %29, i8 0, i64 %31, i1 false)
  br label %32

32:                                               ; preds = %49, %28
  %33 = load ptr, ptr %7, align 8, !tbaa !5
  %34 = getelementptr inbounds i8, ptr %33, i32 -1
  store ptr %34, ptr %7, align 8, !tbaa !5
  %35 = load i8, ptr %34, align 1, !tbaa !11
  %36 = icmp ne i8 %35, 0
  br i1 %36, label %37, label %48

37:                                               ; preds = %32
  %38 = load ptr, ptr %6, align 8, !tbaa !5
  %39 = load ptr, ptr %7, align 8, !tbaa !5
  %40 = load ptr, ptr %4, align 8, !tbaa !5
  %41 = ptrtoint ptr %39 to i64
  %42 = ptrtoint ptr %40 to i64
  %43 = sub i64 %41, %42
  %44 = trunc i64 %43 to i32
  %45 = load ptr, ptr %7, align 8, !tbaa !5
  %46 = load i8, ptr %45, align 1, !tbaa !11
  %47 = zext i8 %46 to i32
  call void @setBit(ptr noundef %38, i32 noundef %44, i32 noundef %47)
  br label %48

48:                                               ; preds = %37, %32
  br label %49

49:                                               ; preds = %48
  %50 = load ptr, ptr %7, align 8, !tbaa !5
  %51 = load ptr, ptr %4, align 8, !tbaa !5
  %52 = icmp ne ptr %50, %51
  br i1 %52, label %32, label %53, !llvm.loop !12

53:                                               ; preds = %49
  %54 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %54, ptr %3, align 8
  store i32 1, ptr %9, align 4
  br label %55

55:                                               ; preds = %53, %26
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  %56 = load ptr, ptr %3, align 8
  ret ptr %56
}

; Function Attrs: allocsize(0)
declare ptr @malloc(i64 noundef) #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

attributes #0 = { 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 = { allocsize(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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { nounwind }
attributes #5 = { allocsize(0) }

!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 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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: nounwind uwtable
declare dso_local void @setBit(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef ptr @newBitVector(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = zext i32 %1 to i64
  %4 = add nuw nsw i64 %3, 7
  %5 = lshr i64 %4, 3
  %calloc = tail call ptr @calloc(i64 1, i64 %5)
  %6 = icmp eq ptr %calloc, null
  br i1 %6, label %.loopexit, label %7

7:                                                ; preds = %2
  %8 = getelementptr inbounds i8, ptr %0, i64 %3
  %9 = ptrtoint ptr %0 to i64
  br label %10

10:                                               ; preds = %18, %7
  %.016 = phi ptr [ %8, %7 ], [ %11, %18 ]
  %11 = getelementptr inbounds i8, ptr %.016, i64 -1
  %12 = load i8, ptr %11, align 1, !tbaa !5
  %.not = icmp eq i8 %12, 0
  br i1 %.not, label %18, label %13

13:                                               ; preds = %10
  %14 = ptrtoint ptr %11 to i64
  %15 = sub i64 %14, %9
  %16 = trunc i64 %15 to i32
  %17 = zext i8 %12 to i32
  tail call void @setBit(ptr noundef nonnull %calloc, i32 noundef %16, i32 noundef %17)
  br label %18

18:                                               ; preds = %10, %13
  %.not19 = icmp eq ptr %11, %0
  br i1 %.not19, label %.loopexit, label %10, !llvm.loop !8

.loopexit:                                        ; preds = %18, %2
  ret ptr %calloc
}

; Function Attrs: nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @calloc(i64 noundef, i64 noundef) local_unnamed_addr #1

attributes #0 = { 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 = { nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" }

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: DSEPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass