; LLVM IR from lzyrapx/Competitive-Programming :: HDUOJ (1985)

; 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 [7 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [12 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [12 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca double, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca [3 x i8], align 1
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, 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 3, ptr %5) #4
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  store i32 1, ptr %4, align 4, !tbaa !5
  br label %7

7:                                                ; preds = %52, %0
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %9 = add nsw i32 %8, -1
  store i32 %9, ptr %3, align 4, !tbaa !5
  %10 = icmp ne i32 %8, 0
  br i1 %10, label %11, label %55

11:                                               ; preds = %7
  %12 = getelementptr inbounds [3 x i8], ptr %5, i64 0, i64 0
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %2, ptr noundef %12)
  %14 = getelementptr inbounds [3 x i8], ptr %5, i64 0, i64 0
  %15 = call i32 @strcmp(ptr noundef %14, ptr noundef @.str.2) #5
  %16 = icmp eq i32 %15, 0
  br i1 %16, label %17, label %22

17:                                               ; preds = %11
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = load double, ptr %2, align 8, !tbaa !9
  %20 = fmul double %19, 2.204600e+00
  %21 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef %18, double noundef %20)
  br label %52

22:                                               ; preds = %11
  %23 = getelementptr inbounds [3 x i8], ptr %5, i64 0, i64 0
  %24 = call i32 @strcmp(ptr noundef %23, ptr noundef @.str.4) #5
  %25 = icmp eq i32 %24, 0
  br i1 %25, label %26, label %31

26:                                               ; preds = %22
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = load double, ptr %2, align 8, !tbaa !9
  %29 = fmul double %28, 4.536000e-01
  %30 = call i32 (ptr, ...) @printf(ptr noundef @.str.5, i32 noundef %27, double noundef %29)
  br label %51

31:                                               ; preds = %22
  %32 = getelementptr inbounds [3 x i8], ptr %5, i64 0, i64 0
  %33 = call i32 @strcmp(ptr noundef %32, ptr noundef @.str.6) #5
  %34 = icmp eq i32 %33, 0
  br i1 %34, label %35, label %40

35:                                               ; preds = %31
  %36 = load i32, ptr %4, align 4, !tbaa !5
  %37 = load double, ptr %2, align 8, !tbaa !9
  %38 = fmul double %37, 2.642000e-01
  %39 = call i32 (ptr, ...) @printf(ptr noundef @.str.7, i32 noundef %36, double noundef %38)
  br label %50

40:                                               ; preds = %31
  %41 = getelementptr inbounds [3 x i8], ptr %5, i64 0, i64 0
  %42 = call i32 @strcmp(ptr noundef %41, ptr noundef @.str.8) #5
  %43 = icmp eq i32 %42, 0
  br i1 %43, label %44, label %49

44:                                               ; preds = %40
  %45 = load i32, ptr %4, align 4, !tbaa !5
  %46 = load double, ptr %2, align 8, !tbaa !9
  %47 = fmul double %46, 3.785400e+00
  %48 = call i32 (ptr, ...) @printf(ptr noundef @.str.9, i32 noundef %45, double noundef %47)
  br label %49

49:                                               ; preds = %44, %40
  br label %50

50:                                               ; preds = %49, %35
  br label %51

51:                                               ; preds = %50, %26
  br label %52

52:                                               ; preds = %51, %17
  %53 = load i32, ptr %4, align 4, !tbaa !5
  %54 = add nsw i32 %53, 1
  store i32 %54, ptr %4, align 4, !tbaa !5
  br label %7, !llvm.loop !11

55:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 3, 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 8, ptr %2) #4
  ret i32 0
}

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

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

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strcmp(ptr noundef, ptr noundef) #3

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

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

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 = { 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 #4 = { nounwind }
attributes #5 = { 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [12 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [12 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca double, align 8
  %2 = alloca i32, align 4
  %3 = alloca [3 x i8], align 1
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.start.p0(i64 3, ptr nonnull %3) #4
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = add nsw i32 %5, -1
  store i32 %6, ptr %2, align 4, !tbaa !5
  %.not5 = icmp eq i32 %5, 0
  br i1 %.not5, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %35
  %.06 = phi i32 [ %36, %35 ], [ 1, %0 ]
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %1, ptr noundef nonnull %3)
  %8 = call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %3, ptr noundef nonnull dereferenceable(1) @.str.2) #5
  %9 = icmp eq i32 %8, 0
  br i1 %9, label %10, label %14

10:                                               ; preds = %.lr.ph
  %11 = load double, ptr %1, align 8, !tbaa !9
  %12 = fmul double %11, 2.204600e+00
  %13 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef %.06, double noundef %12)
  br label %35

14:                                               ; preds = %.lr.ph
  %15 = call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %3, ptr noundef nonnull dereferenceable(1) @.str.4) #5
  %16 = icmp eq i32 %15, 0
  br i1 %16, label %17, label %21

17:                                               ; preds = %14
  %18 = load double, ptr %1, align 8, !tbaa !9
  %19 = fmul double %18, 4.536000e-01
  %20 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5, i32 noundef %.06, double noundef %19)
  br label %35

21:                                               ; preds = %14
  %22 = call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %3, ptr noundef nonnull dereferenceable(1) @.str.6) #5
  %23 = icmp eq i32 %22, 0
  br i1 %23, label %24, label %28

24:                                               ; preds = %21
  %25 = load double, ptr %1, align 8, !tbaa !9
  %26 = fmul double %25, 2.642000e-01
  %27 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.7, i32 noundef %.06, double noundef %26)
  br label %35

28:                                               ; preds = %21
  %29 = call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %3, ptr noundef nonnull dereferenceable(1) @.str.8) #5
  %30 = icmp eq i32 %29, 0
  br i1 %30, label %31, label %35

31:                                               ; preds = %28
  %32 = load double, ptr %1, align 8, !tbaa !9
  %33 = fmul double %32, 3.785400e+00
  %34 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.9, i32 noundef %.06, double noundef %33)
  br label %35

35:                                               ; preds = %17, %28, %31, %24, %10
  %36 = add nuw nsw i32 %.06, 1
  %37 = load i32, ptr %2, align 4, !tbaa !5
  %38 = add nsw i32 %37, -1
  store i32 %38, ptr %2, align 4, !tbaa !5
  %.not = icmp eq i32 %37, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %35, %0
  call void @llvm.lifetime.end.p0(i64 3, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #4
  ret i32 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: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i32 @strcmp(ptr nocapture noundef, ptr nocapture noundef) local_unnamed_addr #3

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

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

attributes #0 = { mustprogress nofree norecurse 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #4 = { nounwind }
attributes #5 = { 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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