; LLVM IR from ravireddy07/cpp-book :: src/Code-Chef/FILLGRID.ll (Z5harryv)

; 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"

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1

; 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: mustprogress uwtable
define dso_local void @_Z5harryv() #1 {
  %1 = alloca i32, align 4
  %2 = alloca i8, align 1
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #3
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %1)
  call void @llvm.lifetime.start.p0(i64 1, ptr %2) #3
  %7 = load i32, ptr %1, align 4, !tbaa !5
  %8 = srem i32 %7, 2
  %9 = icmp eq i32 %8, 0
  %10 = zext i1 %9 to i64
  %11 = select i1 %9, i32 1, i32 0
  %12 = icmp ne i32 %11, 0
  %13 = zext i1 %12 to i8
  store i8 %13, ptr %2, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %14

14:                                               ; preds = %42, %0
  %15 = load i32, ptr %3, align 4, !tbaa !5
  %16 = load i32, ptr %1, align 4, !tbaa !5
  %17 = icmp sle i32 %15, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %14
  store i32 2, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %45

19:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 1, ptr %5, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %37, %19
  %21 = load i32, ptr %5, align 4, !tbaa !5
  %22 = load i32, ptr %1, align 4, !tbaa !5
  %23 = icmp sle i32 %21, %22
  br i1 %23, label %25, label %24

24:                                               ; preds = %20
  store i32 5, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %40

25:                                               ; preds = %20
  %26 = load i8, ptr %2, align 1, !tbaa !9, !range !11, !noundef !12
  %27 = trunc i8 %26 to i1
  br i1 %27, label %32, label %28

28:                                               ; preds = %25
  %29 = load i32, ptr %3, align 4, !tbaa !5
  %30 = load i32, ptr %5, align 4, !tbaa !5
  %31 = icmp eq i32 %29, %30
  br i1 %31, label %32, label %34

32:                                               ; preds = %28, %25
  %33 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  br label %36

34:                                               ; preds = %28
  %35 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %36

36:                                               ; preds = %34, %32
  br label %37

37:                                               ; preds = %36
  %38 = load i32, ptr %5, align 4, !tbaa !5
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %5, align 4, !tbaa !5
  br label %20, !llvm.loop !13

40:                                               ; preds = %24
  %41 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %42

42:                                               ; preds = %40
  %43 = load i32, ptr %3, align 4, !tbaa !5
  %44 = add nsw i32 %43, 1
  store i32 %44, ptr %3, align 4, !tbaa !5
  br label %14, !llvm.loop !15

45:                                               ; preds = %18
  store i32 1, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 1, ptr %2) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #3
  ret void
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

declare i32 @printf(ptr noundef, ...) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 #2 = { "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = !{i8 0, i8 2}
!12 = !{}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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"

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local void @_Z5harryv() local_unnamed_addr #1 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  %2 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %3 = load i32, ptr %1, align 4, !tbaa !5
  %.fr = freeze i32 %3
  %.not11 = icmp slt i32 %.fr, 1
  br i1 %.not11, label %._crit_edge14, label %.preheader.lr.ph

.preheader.lr.ph:                                 ; preds = %0
  %4 = and i32 %.fr, 1
  %5 = icmp eq i32 %4, 0
  br i1 %5, label %.preheader.us, label %.preheader

.preheader.us:                                    ; preds = %.preheader.lr.ph, %._crit_edge.split.us.us
  %6 = phi i32 [ %9, %._crit_edge.split.us.us ], [ %.fr, %.preheader.lr.ph ]
  %.0712.us = phi i32 [ %8, %._crit_edge.split.us.us ], [ 1, %.preheader.lr.ph ]
  %.not89.us = icmp slt i32 %6, 1
  br i1 %.not89.us, label %._crit_edge.split.us.us, label %.lr.ph.us

._crit_edge.split.us.us:                          ; preds = %.lr.ph.us, %.preheader.us
  %7 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %8 = add nuw nsw i32 %.0712.us, 1
  %9 = load i32, ptr %1, align 4, !tbaa !5
  %.not.us.not = icmp slt i32 %.0712.us, %9
  br i1 %.not.us.not, label %.preheader.us, label %._crit_edge14, !llvm.loop !9

.lr.ph.us:                                        ; preds = %.preheader.us, %.lr.ph.us
  %.010.us.us = phi i32 [ %11, %.lr.ph.us ], [ 1, %.preheader.us ]
  %10 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %11 = add nuw nsw i32 %.010.us.us, 1
  %12 = load i32, ptr %1, align 4, !tbaa !5
  %.not8.us.us.not = icmp slt i32 %.010.us.us, %12
  br i1 %.not8.us.us.not, label %.lr.ph.us, label %._crit_edge.split.us.us, !llvm.loop !11

.preheader:                                       ; preds = %.preheader.lr.ph, %._crit_edge.split
  %13 = phi i32 [ %16, %._crit_edge.split ], [ %.fr, %.preheader.lr.ph ]
  %.0712 = phi i32 [ %15, %._crit_edge.split ], [ 1, %.preheader.lr.ph ]
  %.not89 = icmp slt i32 %13, 1
  br i1 %.not89, label %._crit_edge.split, label %.lr.ph

._crit_edge14:                                    ; preds = %._crit_edge.split, %._crit_edge.split.us.us, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #3
  ret void

._crit_edge.split:                                ; preds = %.lr.ph, %.preheader
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %15 = add nuw nsw i32 %.0712, 1
  %16 = load i32, ptr %1, align 4, !tbaa !5
  %.not.not = icmp slt i32 %.0712, %16
  br i1 %.not.not, label %.preheader, label %._crit_edge14, !llvm.loop !9

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %.010 = phi i32 [ %19, %.lr.ph ], [ 1, %.preheader ]
  %17 = icmp eq i32 %.0712, %.010
  %.str.1..str.2 = select i1 %17, ptr @.str.1, ptr @.str.2
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.1..str.2)
  %19 = add nuw nsw i32 %.010, 1
  %20 = load i32, ptr %1, align 4, !tbaa !5
  %.not8.not = icmp slt i32 %.010, %20
  br i1 %.not8.not, label %.lr.ph, label %._crit_edge.split, !llvm.loop !11
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nofree 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 #2 = { nofree nounwind "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass