; LLVM IR from xirc/cp-algorithm :: aoj/JOI/0646/main.ll (Z5solvev)

; 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 uwtable
declare dso_local noundef zeroext i1 @_Z4passi(i32 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: mustprogress uwtable
define dso_local noundef i32 @_Z5solvev() #0 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #2
  store i64 1, ptr %1, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #2
  store i64 100000000, ptr %2, align 8, !tbaa !5
  br label %4

4:                                                ; preds = %21, %0
  %5 = load i64, ptr %1, align 8, !tbaa !5
  %6 = load i64, ptr %2, align 8, !tbaa !5
  %7 = icmp slt i64 %5, %6
  br i1 %7, label %8, label %22

8:                                                ; preds = %4
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  %9 = load i64, ptr %1, align 8, !tbaa !5
  %10 = load i64, ptr %2, align 8, !tbaa !5
  %11 = add nsw i64 %9, %10
  %12 = sdiv i64 %11, 2
  store i64 %12, ptr %3, align 8, !tbaa !5
  %13 = load i64, ptr %3, align 8, !tbaa !5
  %14 = trunc i64 %13 to i32
  %15 = call noundef zeroext i1 @_Z4passi(i32 noundef %14)
  br i1 %15, label %16, label %18

16:                                               ; preds = %8
  %17 = load i64, ptr %3, align 8, !tbaa !5
  store i64 %17, ptr %2, align 8, !tbaa !5
  br label %21

18:                                               ; preds = %8
  %19 = load i64, ptr %3, align 8, !tbaa !5
  %20 = add nsw i64 %19, 1
  store i64 %20, ptr %1, align 8, !tbaa !5
  br label %21

21:                                               ; preds = %18, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  br label %4, !llvm.loop !9

22:                                               ; preds = %4
  %23 = load i64, ptr %1, align 8, !tbaa !5
  %24 = trunc i64 %23 to i32
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #2
  ret i32 %24
}

attributes #0 = { 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 #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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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 uwtable
declare dso_local noundef zeroext i1 @_Z4passi(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z5solvev() local_unnamed_addr #0 {
  br label %1

1:                                                ; preds = %0, %1
  %.011 = phi i64 [ 1, %0 ], [ %.1, %1 ]
  %.0810 = phi i64 [ 100000000, %0 ], [ %.19, %1 ]
  %2 = add nsw i64 %.011, %.0810
  %3 = sdiv i64 %2, 2
  %4 = trunc i64 %3 to i32
  %5 = tail call noundef zeroext i1 @_Z4passi(i32 noundef %4)
  %6 = add nsw i64 %3, 1
  %.19 = select i1 %5, i64 %3, i64 %.0810
  %.1 = select i1 %5, i64 %.011, i64 %6
  %7 = icmp slt i64 %.1, %.19
  br i1 %7, label %1, label %8, !llvm.loop !5

8:                                                ; preds = %1
  %9 = trunc i64 %.1 to i32
  ret i32 %9
}

attributes #0 = { 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" }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass