; LLVM IR from Izaron/ACM-ICPC :: Timus Online Judge/Volume 10/1970. 皇后像廣場.ll (Z4workiii)

; 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: 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
declare dso_local void @_Z4workiiiiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z4workiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) #1 {
  %4 = alloca i32, align 4
  %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
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %40, %3
  %12 = load i32, ptr %7, align 4, !tbaa !5
  %13 = icmp slt i32 %12, 4
  br i1 %13, label %15, label %14

14:                                               ; preds = %11
  store i32 2, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %43

15:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %36, %15
  %17 = load i32, ptr %9, align 4, !tbaa !5
  %18 = icmp slt i32 %17, 4
  br i1 %18, label %20, label %19

19:                                               ; preds = %16
  store i32 5, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  br label %39

20:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  store i32 0, ptr %10, align 4, !tbaa !5
  br label %21

21:                                               ; preds = %32, %20
  %22 = load i32, ptr %10, align 4, !tbaa !5
  %23 = icmp slt i32 %22, 4
  br i1 %23, label %25, label %24

24:                                               ; preds = %21
  store i32 8, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  br label %35

25:                                               ; preds = %21
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = load i32, ptr %6, align 4, !tbaa !5
  %29 = load i32, ptr %7, align 4, !tbaa !5
  %30 = load i32, ptr %9, align 4, !tbaa !5
  %31 = load i32, ptr %10, align 4, !tbaa !5
  call void @_Z4workiiiiii(i32 noundef %26, i32 noundef %27, i32 noundef %28, i32 noundef %29, i32 noundef %30, i32 noundef %31)
  br label %32

32:                                               ; preds = %25
  %33 = load i32, ptr %10, align 4, !tbaa !5
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %10, align 4, !tbaa !5
  br label %21, !llvm.loop !9

35:                                               ; preds = %24
  br label %36

36:                                               ; preds = %35
  %37 = load i32, ptr %9, align 4, !tbaa !5
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %9, align 4, !tbaa !5
  br label %16, !llvm.loop !11

39:                                               ; preds = %19
  br label %40

40:                                               ; preds = %39
  %41 = load i32, ptr %7, align 4, !tbaa !5
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %7, align 4, !tbaa !5
  br label %11, !llvm.loop !12

43:                                               ; preds = %14
  ret void
}

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 = { 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}
!12 = distinct !{!12, !10}


; 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 void @_Z4workiiiiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z4workiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  br label %.preheader14

.preheader14:                                     ; preds = %3, %.preheader14
  %.01317 = phi i32 [ 0, %3 ], [ %4, %.preheader14 ]
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 0, i32 noundef 0)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 0, i32 noundef 1)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 0, i32 noundef 2)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 0, i32 noundef 3)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 1, i32 noundef 0)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 1, i32 noundef 1)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 1, i32 noundef 2)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 1, i32 noundef 3)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 2, i32 noundef 0)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 2, i32 noundef 1)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 2, i32 noundef 2)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 2, i32 noundef 3)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 3, i32 noundef 0)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 3, i32 noundef 1)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 3, i32 noundef 2)
  tail call void @_Z4workiiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %.01317, i32 noundef 3, i32 noundef 3)
  %4 = add nuw nsw i32 %.01317, 1
  %exitcond.not = icmp eq i32 %4, 4
  br i1 %exitcond.not, label %5, label %.preheader14, !llvm.loop !5

5:                                                ; preds = %.preheader14
  ret void
}

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,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,LoopSimplifyPass,SROAPass,SimplifyCFGPass,TailCallElimPass