; LLVM IR from hao14293/2021-Postgraduate-408 :: PAT/PAT-B/CPP/1053.住房空置率 (main)

; 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"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str = external hidden unnamed_addr constant [14 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca float, align 4
  %5 = alloca float, align 4
  %6 = alloca float, align 4
  %7 = alloca float, 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
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store float 0.000000e+00, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store float 0.000000e+00, ptr %7, align 4, !tbaa !5
  %13 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %14 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERf(ptr noundef nonnull align 8 dereferenceable(16) %13, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %15 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %14, ptr noundef nonnull align 4 dereferenceable(4) %3)
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %16

16:                                               ; preds = %62, %0
  %17 = load i32, ptr %8, align 4, !tbaa !9
  %18 = load i32, ptr %2, align 4, !tbaa !9
  %19 = icmp slt i32 %17, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %16
  store i32 2, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %65

21:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #4
  store i32 0, ptr %11, align 4, !tbaa !9
  %22 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %10)
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  store i32 0, ptr %12, align 4, !tbaa !9
  br label %23

23:                                               ; preds = %37, %21
  %24 = load i32, ptr %12, align 4, !tbaa !9
  %25 = load i32, ptr %10, align 4, !tbaa !9
  %26 = icmp slt i32 %24, %25
  br i1 %26, label %28, label %27

27:                                               ; preds = %23
  store i32 5, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  br label %40

28:                                               ; preds = %23
  %29 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERf(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %30 = load float, ptr %5, align 4, !tbaa !5
  %31 = load float, ptr %4, align 4, !tbaa !5
  %32 = fcmp olt float %30, %31
  br i1 %32, label %33, label %36

33:                                               ; preds = %28
  %34 = load i32, ptr %11, align 4, !tbaa !9
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %11, align 4, !tbaa !9
  br label %36

36:                                               ; preds = %33, %28
  br label %37

37:                                               ; preds = %36
  %38 = load i32, ptr %12, align 4, !tbaa !9
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %12, align 4, !tbaa !9
  br label %23, !llvm.loop !11

40:                                               ; preds = %27
  %41 = load i32, ptr %10, align 4, !tbaa !9
  %42 = load i32, ptr %3, align 4, !tbaa !9
  %43 = icmp sgt i32 %41, %42
  br i1 %43, label %44, label %52

44:                                               ; preds = %40
  %45 = load i32, ptr %11, align 4, !tbaa !9
  %46 = mul nsw i32 %45, 2
  %47 = load i32, ptr %10, align 4, !tbaa !9
  %48 = icmp sgt i32 %46, %47
  br i1 %48, label %49, label %52

49:                                               ; preds = %44
  %50 = load float, ptr %7, align 4, !tbaa !5
  %51 = fadd float %50, 1.000000e+00
  store float %51, ptr %7, align 4, !tbaa !5
  br label %61

52:                                               ; preds = %44, %40
  %53 = load i32, ptr %11, align 4, !tbaa !9
  %54 = mul nsw i32 %53, 2
  %55 = load i32, ptr %10, align 4, !tbaa !9
  %56 = icmp sgt i32 %54, %55
  br i1 %56, label %57, label %60

57:                                               ; preds = %52
  %58 = load float, ptr %6, align 4, !tbaa !5
  %59 = fadd float %58, 1.000000e+00
  store float %59, ptr %6, align 4, !tbaa !5
  br label %60

60:                                               ; preds = %57, %52
  br label %61

61:                                               ; preds = %60, %49
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  br label %62

62:                                               ; preds = %61
  %63 = load i32, ptr %8, align 4, !tbaa !9
  %64 = add nsw i32 %63, 1
  store i32 %64, ptr %8, align 4, !tbaa !9
  br label %16, !llvm.loop !13

65:                                               ; preds = %20
  %66 = load float, ptr %6, align 4, !tbaa !5
  %67 = load i32, ptr %2, align 4, !tbaa !9
  %68 = sitofp i32 %67 to float
  %69 = fdiv float %66, %68
  %70 = fmul float %69, 1.000000e+02
  store float %70, ptr %6, align 4, !tbaa !5
  %71 = load float, ptr %7, align 4, !tbaa !5
  %72 = load i32, ptr %2, align 4, !tbaa !9
  %73 = sitofp i32 %72 to float
  %74 = fdiv float %71, %73
  %75 = fmul float %74, 1.000000e+02
  store float %75, ptr %7, align 4, !tbaa !5
  %76 = load float, ptr %6, align 4, !tbaa !5
  %77 = fpext float %76 to double
  %78 = load float, ptr %7, align 4, !tbaa !5
  %79 = fpext float %78 to double
  %80 = call i32 (ptr, ...) @printf(ptr noundef @.str, double noundef %77, double noundef %79)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  %81 = load i32, ptr %1, align 4
  ret i32 %81
}

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERf(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #3 align 2

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

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

attributes #0 = { mustprogress norecurse 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 = { "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 = { 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 #4 = { 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 = !{!"float", !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"}
!13 = distinct !{!13, !12}


; 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"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str = external hidden unnamed_addr constant [14 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca float, align 4
  %4 = alloca float, align 4
  %5 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #5
  %6 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %7 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERf(ptr noundef nonnull align 8 dereferenceable(16) %6, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %8 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %7, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %9 = load i32, ptr %1, align 4, !tbaa !5
  %10 = icmp sgt i32 %9, 0
  br i1 %10, label %.lr.ph30, label %._crit_edge31

._crit_edge31:                                    ; preds = %39, %0
  %.017.lcssa = phi float [ 0.000000e+00, %0 ], [ %.118, %39 ]
  %.015.lcssa = phi float [ 0.000000e+00, %0 ], [ %.116, %39 ]
  %.lcssa22 = phi i32 [ %9, %0 ], [ %41, %39 ]
  %11 = sitofp i32 %.lcssa22 to float
  %12 = fdiv float %.017.lcssa, %11
  %13 = fmul float %12, 1.000000e+02
  %14 = fdiv float %.015.lcssa, %11
  %15 = fmul float %14, 1.000000e+02
  %16 = fpext float %13 to double
  %17 = fpext float %15 to double
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, double noundef %16, double noundef %17)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  ret i32 0

.lr.ph30:                                         ; preds = %0, %39
  %.01428 = phi i32 [ %40, %39 ], [ 0, %0 ]
  %.01527 = phi float [ %.116, %39 ], [ 0.000000e+00, %0 ]
  %.01726 = phi float [ %.118, %39 ], [ 0.000000e+00, %0 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #5
  %19 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = icmp sgt i32 %20, 0
  br i1 %21, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.lr.ph30
  %.013.lcssa = phi i32 [ 0, %.lr.ph30 ], [ %.1, %.lr.ph ]
  %.lcssa = phi i32 [ %20, %.lr.ph30 ], [ %32, %.lr.ph ]
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = icmp sgt i32 %.lcssa, %22
  %24 = shl nsw i32 %.013.lcssa, 1
  %25 = icmp sgt i32 %24, %.lcssa
  %or.cond = select i1 %23, i1 %25, i1 false
  br i1 %or.cond, label %34, label %36

.lr.ph:                                           ; preds = %.lr.ph30, %.lr.ph
  %.024 = phi i32 [ %31, %.lr.ph ], [ 0, %.lr.ph30 ]
  %.01323 = phi i32 [ %.1, %.lr.ph ], [ 0, %.lr.ph30 ]
  %26 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERf(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %27 = load float, ptr %4, align 4, !tbaa !9
  %28 = load float, ptr %3, align 4, !tbaa !9
  %29 = fcmp olt float %27, %28
  %30 = zext i1 %29 to i32
  %.1 = add nuw nsw i32 %.01323, %30
  %31 = add nuw nsw i32 %.024, 1
  %32 = load i32, ptr %5, align 4, !tbaa !5
  %33 = icmp slt i32 %31, %32
  br i1 %33, label %.lr.ph, label %._crit_edge, !llvm.loop !11

34:                                               ; preds = %._crit_edge
  %35 = fadd float %.01527, 1.000000e+00
  br label %39

36:                                               ; preds = %._crit_edge
  br i1 %25, label %37, label %39

37:                                               ; preds = %36
  %38 = fadd float %.01726, 1.000000e+00
  br label %39

39:                                               ; preds = %36, %37, %34
  %.118 = phi float [ %.01726, %34 ], [ %38, %37 ], [ %.01726, %36 ]
  %.116 = phi float [ %35, %34 ], [ %.01527, %37 ], [ %.01527, %36 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #5
  %40 = add nuw nsw i32 %.01428, 1
  %41 = load i32, ptr %1, align 4, !tbaa !5
  %42 = icmp slt i32 %40, %41
  br i1 %42, label %.lr.ph30, label %._crit_edge31, !llvm.loop !13
}

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERf(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3 align 2

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

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #4

attributes #0 = { mustprogress norecurse 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #4 = { 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 #5 = { 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 = !{!"float", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


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