; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 05. Searching/Search2DMatrix.ll (Z14search2DMatrixRSt6vectorIS_IiSaIiEESaIS1_EEi)

; 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: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z14search2DMatrixRSt6vectorIS_IiSaIiEESaIS1_EEi(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1) #0 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = 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 4, ptr %6) #2
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = call noundef i64 @_ZNKSt6vectorIS_IiSaIiEESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %14) #2
  %16 = trunc i64 %15 to i32
  store i32 %16, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %17, i64 noundef 0) #2
  %19 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %18) #2
  %20 = trunc i64 %19 to i32
  store i32 %20, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %21 = load i32, ptr %6, align 4, !tbaa !9
  %22 = load i32, ptr %7, align 4, !tbaa !9
  %23 = mul nsw i32 %21, %22
  %24 = sub nsw i32 %23, 1
  store i32 %24, ptr %9, align 4, !tbaa !9
  br label %25

25:                                               ; preds = %73, %2
  %26 = load i32, ptr %8, align 4, !tbaa !9
  %27 = load i32, ptr %9, align 4, !tbaa !9
  %28 = icmp sle i32 %26, %27
  br i1 %28, label %29, label %74

29:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  %30 = load i32, ptr %8, align 4, !tbaa !9
  %31 = load i32, ptr %9, align 4, !tbaa !9
  %32 = load i32, ptr %8, align 4, !tbaa !9
  %33 = sub nsw i32 %31, %32
  %34 = sdiv i32 %33, 2
  %35 = add nsw i32 %30, %34
  store i32 %35, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  %36 = load i32, ptr %10, align 4, !tbaa !9
  %37 = load i32, ptr %7, align 4, !tbaa !9
  %38 = sdiv i32 %36, %37
  store i32 %38, ptr %11, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #2
  %39 = load i32, ptr %10, align 4, !tbaa !9
  %40 = load i32, ptr %7, align 4, !tbaa !9
  %41 = srem i32 %39, %40
  store i32 %41, ptr %12, align 4, !tbaa !9
  %42 = load ptr, ptr %4, align 8, !tbaa !5
  %43 = load i32, ptr %11, align 4, !tbaa !9
  %44 = sext i32 %43 to i64
  %45 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %42, i64 noundef %44) #2
  %46 = load i32, ptr %12, align 4, !tbaa !9
  %47 = sext i32 %46 to i64
  %48 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %45, i64 noundef %47) #2
  %49 = load i32, ptr %48, align 4, !tbaa !9
  %50 = load i32, ptr %5, align 4, !tbaa !9
  %51 = icmp eq i32 %49, %50
  br i1 %51, label %52, label %53

52:                                               ; preds = %29
  store i1 true, ptr %3, align 1
  store i32 1, ptr %13, align 4
  br label %71

53:                                               ; preds = %29
  %54 = load i32, ptr %5, align 4, !tbaa !9
  %55 = load ptr, ptr %4, align 8, !tbaa !5
  %56 = load i32, ptr %11, align 4, !tbaa !9
  %57 = sext i32 %56 to i64
  %58 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %55, i64 noundef %57) #2
  %59 = load i32, ptr %12, align 4, !tbaa !9
  %60 = sext i32 %59 to i64
  %61 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %58, i64 noundef %60) #2
  %62 = load i32, ptr %61, align 4, !tbaa !9
  %63 = icmp slt i32 %54, %62
  br i1 %63, label %64, label %67

64:                                               ; preds = %53
  %65 = load i32, ptr %10, align 4, !tbaa !9
  %66 = sub nsw i32 %65, 1
  store i32 %66, ptr %9, align 4, !tbaa !9
  br label %70

67:                                               ; preds = %53
  %68 = load i32, ptr %10, align 4, !tbaa !9
  %69 = add nsw i32 %68, 1
  store i32 %69, ptr %8, align 4, !tbaa !9
  br label %70

70:                                               ; preds = %67, %64
  store i32 0, ptr %13, align 4
  br label %71

71:                                               ; preds = %70, %52
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  %72 = load i32, ptr %13, align 4
  switch i32 %72, label %75 [
    i32 0, label %73
  ]

73:                                               ; preds = %71
  br label %25, !llvm.loop !11

74:                                               ; preds = %25
  store i1 false, ptr %3, align 1
  store i32 1, ptr %13, align 4
  br label %75

75:                                               ; preds = %74, %71
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %76 = load i1, ptr %3, align 1
  ret i1 %76
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIS_IiSaIiEESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

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

attributes #0 = { mustprogress 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++ 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: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z14search2DMatrixRSt6vectorIS_IiSaIiEESaIS1_EEi(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call noundef i64 @_ZNKSt6vectorIS_IiSaIiEESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #1
  %4 = trunc i64 %3 to i32
  %5 = tail call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 0) #1
  %6 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #1
  %7 = trunc i64 %6 to i32
  %8 = mul nsw i32 %7, %4
  %.not35 = icmp sgt i32 %8, 0
  br i1 %.not35, label %.lr.ph.preheader, label %.thread

.lr.ph.preheader:                                 ; preds = %2
  %9 = add nsw i32 %8, -1
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %20
  %.02537 = phi i32 [ %.126, %20 ], [ 0, %.lr.ph.preheader ]
  %.02836 = phi i32 [ %.129, %20 ], [ %9, %.lr.ph.preheader ]
  %10 = sub nsw i32 %.02836, %.02537
  %11 = sdiv i32 %10, 2
  %12 = add nsw i32 %11, %.02537
  %13 = sdiv i32 %12, %7
  %14 = srem i32 %12, %7
  %15 = sext i32 %13 to i64
  %16 = tail call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %15) #1
  %17 = sext i32 %14 to i64
  %18 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %16, i64 noundef %17) #1
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %.not32 = icmp eq i32 %19, %1
  br i1 %.not32, label %.thread, label %20

20:                                               ; preds = %.lr.ph
  %21 = tail call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %15) #1
  %22 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %21, i64 noundef %17) #1
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = icmp sgt i32 %23, %1
  %25 = add nsw i32 %12, -1
  %26 = add nsw i32 %12, 1
  %.129 = select i1 %24, i32 %25, i32 %.02836
  %.126 = select i1 %24, i32 %.02537, i32 %26
  %.not.not = icmp sgt i32 %.126, %.129
  br i1 %.not.not, label %.thread, label %.lr.ph

.thread:                                          ; preds = %20, %.lr.ph, %2
  %.not.lcssa = phi i1 [ false, %2 ], [ %.not32, %.lr.ph ], [ %.not32, %20 ]
  ret i1 %.not.lcssa
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIS_IiSaIiEESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

attributes #0 = { mustprogress 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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass