; LLVM IR from DimitrisJim/leetcode_solutions :: C/Algorithms (485)

; 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 @findMaxConsecutiveOnes(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %25, %24, %2
  %8 = load i32, ptr %4, align 4, !tbaa !9
  %9 = add nsw i32 %8, -1
  store i32 %9, ptr %4, align 4, !tbaa !9
  %10 = icmp ne i32 %8, 0
  br i1 %10, label %11, label %26

11:                                               ; preds = %7
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds i32, ptr %12, i32 1
  store ptr %13, ptr %3, align 8, !tbaa !5
  %14 = load i32, ptr %12, align 4, !tbaa !9
  %15 = icmp ne i32 %14, 0
  br i1 %15, label %16, label %25

16:                                               ; preds = %11
  %17 = load i32, ptr %6, align 4, !tbaa !9
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %6, align 4, !tbaa !9
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = icmp sgt i32 %19, %20
  br i1 %21, label %22, label %24

22:                                               ; preds = %16
  %23 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %23, ptr %5, align 4, !tbaa !9
  br label %24

24:                                               ; preds = %22, %16
  br label %7, !llvm.loop !11

25:                                               ; preds = %11
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %7, !llvm.loop !11

26:                                               ; preds = %7
  %27 = load i32, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %27
}

; 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 = { 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 = !{!"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 = 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: nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local i32 @findMaxConsecutiveOnes(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %.not.peel31 = icmp eq i32 %1, 0
  br i1 %.not.peel31, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %2, %.loopexit18
  %.0.ph35 = phi i32 [ %10, %.loopexit18 ], [ 0, %2 ]
  %.06.ph34 = phi i32 [ %spec.select, %.loopexit18 ], [ 0, %2 ]
  %.07.ph33 = phi i32 [ %.lcssa16, %.loopexit18 ], [ %1, %2 ]
  %.08.ph32 = phi ptr [ %.lcssa, %.loopexit18 ], [ %0, %2 ]
  %3 = add nsw i32 %.07.ph33, -1
  %4 = getelementptr inbounds i8, ptr %.08.ph32, i64 4
  %5 = load i32, ptr %.08.ph32, align 4, !tbaa !5
  %.not10.peel = icmp eq i32 %5, 0
  br i1 %.not10.peel, label %.peel.next, label %.loopexit18

.peel.next:                                       ; preds = %.lr.ph, %6
  %.08 = phi ptr [ %8, %6 ], [ %4, %.lr.ph ]
  %.07 = phi i32 [ %7, %6 ], [ %3, %.lr.ph ]
  %.not = icmp eq i32 %.07, 0
  br i1 %.not, label %.loopexit, label %6

6:                                                ; preds = %.peel.next
  %7 = add nsw i32 %.07, -1
  %8 = getelementptr inbounds i8, ptr %.08, i64 4
  %9 = load i32, ptr %.08, align 4, !tbaa !5
  %.not10 = icmp eq i32 %9, 0
  br i1 %.not10, label %.peel.next, label %.loopexit18, !llvm.loop !9

.loopexit18:                                      ; preds = %6, %.lr.ph
  %.lcssa16 = phi i32 [ %3, %.lr.ph ], [ %7, %6 ]
  %.lcssa = phi ptr [ %4, %.lr.ph ], [ %8, %6 ]
  %.0.lcssa15 = phi i32 [ %.0.ph35, %.lr.ph ], [ 0, %6 ]
  %10 = add nsw i32 %.0.lcssa15, 1
  %.not11 = icmp slt i32 %.0.lcssa15, %.06.ph34
  %spec.select = select i1 %.not11, i32 %.06.ph34, i32 %10
  %.not.peel = icmp eq i32 %.lcssa16, 0
  br i1 %.not.peel, label %.loopexit, label %.lr.ph, !llvm.loop !12

.loopexit:                                        ; preds = %.loopexit18, %.peel.next, %2
  %.06.ph30 = phi i32 [ 0, %2 ], [ %.06.ph34, %.peel.next ], [ %spec.select, %.loopexit18 ]
  ret i32 %.06.ph30
}

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, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10, !11}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.peeled.count", i32 1}
!12 = distinct !{!12, !10}


; Effective O3 passes: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopFullUnrollPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass