; LLVM IR from int32bit/leetcode :: algorithms/ValidNumber (validNumber)

; 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"

@stdin = external global ptr, align 8
@.str = external hidden unnamed_addr constant [12 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr 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
declare dso_local i32 @isNumber(ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @main(i32 noundef %0, ptr noundef %1) #2 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca [20 x i8], align 16
  %7 = alloca i32, align 4
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 20, ptr %6) #5
  br label %8

8:                                                ; preds = %30, %2
  %9 = getelementptr inbounds [20 x i8], ptr %6, i64 0, i64 0
  %10 = load ptr, ptr @stdin, align 8, !tbaa !9
  %11 = call ptr @fgets(ptr noundef %9, i32 noundef 20, ptr noundef %10)
  %12 = icmp ne ptr %11, null
  br i1 %12, label %13, label %32

13:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  %14 = getelementptr inbounds [20 x i8], ptr %6, i64 0, i64 0
  %15 = call i64 @strlen(ptr noundef %14) #6
  %16 = trunc i64 %15 to i32
  store i32 %16, ptr %7, align 4, !tbaa !5
  %17 = load i32, ptr %7, align 4, !tbaa !5
  %18 = sub nsw i32 %17, 1
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds [20 x i8], ptr %6, i64 0, i64 %19
  store i8 0, ptr %20, align 1, !tbaa !11
  %21 = getelementptr inbounds [20 x i8], ptr %6, i64 0, i64 0
  %22 = call i32 @isNumber(ptr noundef %21)
  %23 = icmp ne i32 %22, 0
  br i1 %23, label %24, label %27

24:                                               ; preds = %13
  %25 = getelementptr inbounds [20 x i8], ptr %6, i64 0, i64 0
  %26 = call i32 (ptr, ...) @printf(ptr noundef @.str, ptr noundef %25)
  br label %30

27:                                               ; preds = %13
  %28 = getelementptr inbounds [20 x i8], ptr %6, i64 0, i64 0
  %29 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, ptr noundef %28)
  br label %30

30:                                               ; preds = %27, %24
  %31 = getelementptr inbounds [20 x i8], ptr %6, i64 0, i64 0
  call void @llvm.memset.p0.i64(ptr align 16 %31, i8 0, i64 20, i1 false)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  br label %8, !llvm.loop !12

32:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 20, ptr %6) #5
  ret i32 0
}

declare ptr @fgets(ptr noundef, i32 noundef, ptr noundef) #3

declare i32 @printf(ptr noundef, ...) #3

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { "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 #4 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #5 = { nounwind }
attributes #6 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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"

@stdin = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [12 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #0

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

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

; Function Attrs: nounwind uwtable
declare dso_local i32 @isNumber(ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #2 {
  %3 = alloca [20 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 20, ptr nonnull %3) #5
  %4 = load ptr, ptr @stdin, align 8, !tbaa !5
  %5 = call ptr @fgets(ptr noundef nonnull %3, i32 noundef 20, ptr noundef %4)
  %.not2 = icmp eq ptr %5, null
  br i1 %.not2, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %.lr.ph
  %6 = call i64 @strlen(ptr noundef nonnull dereferenceable(1) %3) #6
  %7 = shl i64 %6, 32
  %sext = add i64 %7, -4294967296
  %8 = ashr exact i64 %sext, 32
  %9 = getelementptr inbounds [20 x i8], ptr %3, i64 0, i64 %8
  store i8 0, ptr %9, align 1, !tbaa !9
  %10 = call i32 @isNumber(ptr noundef nonnull %3)
  %.not1 = icmp eq i32 %10, 0
  %.str.1..str = select i1 %.not1, ptr @.str.1, ptr @.str
  %11 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.1..str, ptr noundef nonnull %3)
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(20) %3, i8 0, i64 20, i1 false)
  %12 = load ptr, ptr @stdin, align 8, !tbaa !5
  %13 = call ptr @fgets(ptr noundef nonnull %3, i32 noundef 20, ptr noundef %12)
  %.not = icmp eq ptr %13, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !10

._crit_edge:                                      ; preds = %.lr.ph, %2
  call void @llvm.lifetime.end.p0(i64 20, ptr nonnull %3) #5
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef ptr @fgets(ptr noundef, i32 noundef, ptr nocapture noundef) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 #4 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #5 = { nounwind }
attributes #6 = { 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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass