; LLVM IR from 6leetcode/6leetcode :: questions/Algorithms/0696. Count Binary Substrings (c1)

; 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
define dso_local i32 @countBinarySubstrings(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = call i64 @strlen(ptr noundef %8) #4
  %10 = sub i64 %9, 1
  %11 = trunc i64 %10 to i32
  store i32 %11, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %12

12:                                               ; preds = %45, %1
  %13 = load i32, ptr %7, align 4, !tbaa !9
  %14 = load i32, ptr %6, align 4, !tbaa !9
  %15 = icmp slt i32 %13, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %48

17:                                               ; preds = %12
  %18 = load ptr, ptr %2, align 8, !tbaa !5
  %19 = load i32, ptr %7, align 4, !tbaa !9
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds i8, ptr %18, i64 %20
  %22 = load i8, ptr %21, align 1, !tbaa !11
  %23 = sext i8 %22 to i32
  %24 = load ptr, ptr %2, align 8, !tbaa !5
  %25 = load i32, ptr %7, align 4, !tbaa !9
  %26 = add nsw i32 %25, 1
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds i8, ptr %24, i64 %27
  %29 = load i8, ptr %28, align 1, !tbaa !11
  %30 = sext i8 %29 to i32
  %31 = icmp eq i32 %23, %30
  br i1 %31, label %32, label %35

32:                                               ; preds = %17
  %33 = load i32, ptr %5, align 4, !tbaa !9
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %5, align 4, !tbaa !9
  br label %37

35:                                               ; preds = %17
  %36 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %36, ptr %4, align 4, !tbaa !9
  store i32 1, ptr %5, align 4, !tbaa !9
  br label %37

37:                                               ; preds = %35, %32
  %38 = load i32, ptr %4, align 4, !tbaa !9
  %39 = load i32, ptr %5, align 4, !tbaa !9
  %40 = icmp sge i32 %38, %39
  br i1 %40, label %41, label %44

41:                                               ; preds = %37
  %42 = load i32, ptr %3, align 4, !tbaa !9
  %43 = add nsw i32 %42, 1
  store i32 %43, ptr %3, align 4, !tbaa !9
  br label %44

44:                                               ; preds = %41, %37
  br label %45

45:                                               ; preds = %44
  %46 = load i32, ptr %7, align 4, !tbaa !9
  %47 = add nsw i32 %46, 1
  store i32 %47, ptr %7, align 4, !tbaa !9
  br label %12, !llvm.loop !12

48:                                               ; preds = %16
  %49 = load i32, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret i32 %49
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind willreturn memory(read) "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 }
attributes #4 = { nounwind willreturn memory(read) }

!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: nofree nounwind memory(argmem: read) uwtable
define dso_local i32 @countBinarySubstrings(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %0) #2
  %3 = trunc i64 %2 to i32
  %4 = add i32 %3, -1
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %1
  %wide.trip.count = zext nneg i32 %4 to i64
  %.pre = load i8, ptr %0, align 1, !tbaa !5
  %xtraiter = and i64 %wide.trip.count, 1
  %6 = icmp eq i32 %4, 1
  br i1 %6, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 2147483646
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa.loopexit:          ; preds = %.lr.ph
  %7 = add nuw nsw i64 %indvars.iv, 3
  br label %._crit_edge.loopexit.unr-lcssa

._crit_edge.loopexit.unr-lcssa:                   ; preds = %._crit_edge.loopexit.unr-lcssa.loopexit, %.lr.ph.preheader
  %.1.lcssa.ph = phi i32 [ poison, %.lr.ph.preheader ], [ %.1.1, %._crit_edge.loopexit.unr-lcssa.loopexit ]
  %.unr = phi i8 [ %.pre, %.lr.ph.preheader ], [ %20, %._crit_edge.loopexit.unr-lcssa.loopexit ]
  %indvars.iv.unr = phi i64 [ 1, %.lr.ph.preheader ], [ %7, %._crit_edge.loopexit.unr-lcssa.loopexit ]
  %.01320.unr = phi i32 [ 0, %.lr.ph.preheader ], [ %.1.1, %._crit_edge.loopexit.unr-lcssa.loopexit ]
  %.01419.unr = phi i32 [ 1, %.lr.ph.preheader ], [ %.115.1, %._crit_edge.loopexit.unr-lcssa.loopexit ]
  %.01618.unr = phi i32 [ 0, %.lr.ph.preheader ], [ %.117.1, %._crit_edge.loopexit.unr-lcssa.loopexit ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa
  %8 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.unr
  %9 = load i8, ptr %8, align 1, !tbaa !5
  %10 = icmp eq i8 %.unr, %9
  %11 = add nsw i32 %.01419.unr, 1
  %.117.epil = select i1 %10, i32 %.01618.unr, i32 %.01419.unr
  %.115.epil = select i1 %10, i32 %11, i32 1
  %.not.epil = icmp sge i32 %.117.epil, %.115.epil
  %12 = zext i1 %.not.epil to i32
  %.1.epil = add nuw nsw i32 %.01320.unr, %12
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.epil, %._crit_edge.loopexit.unr-lcssa, %1
  %.013.lcssa = phi i32 [ 0, %1 ], [ %.1.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %.1.epil, %.lr.ph.epil ]
  ret i32 %.013.lcssa

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %13 = phi i8 [ %.pre, %.lr.ph.preheader.new ], [ %20, %.lr.ph ]
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.1, %.lr.ph ]
  %.01320 = phi i32 [ 0, %.lr.ph.preheader.new ], [ %.1.1, %.lr.ph ]
  %.01419 = phi i32 [ 1, %.lr.ph.preheader.new ], [ %.115.1, %.lr.ph ]
  %.01618 = phi i32 [ 0, %.lr.ph.preheader.new ], [ %.117.1, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.1, %.lr.ph ]
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %14 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next
  %15 = load i8, ptr %14, align 1, !tbaa !5
  %16 = icmp eq i8 %13, %15
  %17 = add nsw i32 %.01419, 1
  %.117 = select i1 %16, i32 %.01618, i32 %.01419
  %.115 = select i1 %16, i32 %17, i32 1
  %.not = icmp sge i32 %.117, %.115
  %18 = zext i1 %.not to i32
  %.1 = add nuw nsw i32 %.01320, %18
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %19 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next.1
  %20 = load i8, ptr %19, align 1, !tbaa !5
  %21 = icmp eq i8 %15, %20
  %22 = add nsw i32 %.115, 1
  %.117.1 = select i1 %21, i32 %.117, i32 %.115
  %.115.1 = select i1 %21, i32 %22, i32 1
  %.not.1 = icmp sge i32 %.117.1, %.115.1
  %23 = zext i1 %.not.1 to i32
  %.1.1 = add nuw nsw i32 %.1, %23
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %._crit_edge.loopexit.unr-lcssa.loopexit, label %.lr.ph, !llvm.loop !8
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #1

attributes #0 = { nofree nounwind memory(argmem: read) 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 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 willreturn memory(read) }

!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: BDCEPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass