; LLVM IR from tangjz/acm-icpc :: TDL_training/2015-10-11 (F - Fat and Orial - dby)

; 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"

@n = external dso_local global double, align 8
@m = external dso_local global double, align 8
@A = external dso_local global i32, align 4
@B = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [7 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 double, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %6

6:                                                ; preds = %43, %0
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = icmp sle i32 %7, %8
  br i1 %9, label %11, label %10

10:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  br label %46

11:                                               ; preds = %6
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %12)
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.2, ptr noundef @n, ptr noundef @m, ptr noundef @A, ptr noundef @B)
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  %15 = load double, ptr @m, align 8, !tbaa !9
  %16 = load i32, ptr @A, align 4, !tbaa !5
  %17 = load i32, ptr @B, align 4, !tbaa !5
  %18 = add nsw i32 %16, %17
  %19 = sitofp i32 %18 to double
  %20 = load double, ptr @n, align 8, !tbaa !9
  %21 = load i32, ptr @A, align 4, !tbaa !5
  %22 = sitofp i32 %21 to double
  %23 = fmul double %20, %22
  %24 = fneg double %23
  %25 = call double @llvm.fmuladd.f64(double %15, double %19, double %24)
  store double %25, ptr %4, align 8, !tbaa !9
  %26 = load double, ptr %4, align 8, !tbaa !9
  %27 = fcmp olt double %26, 0.000000e+00
  br i1 %27, label %34, label %28

28:                                               ; preds = %11
  %29 = load double, ptr %4, align 8, !tbaa !9
  %30 = load i32, ptr @B, align 4, !tbaa !5
  %31 = sitofp i32 %30 to double
  %32 = fmul double %31, 1.000000e+01
  %33 = fcmp ogt double %29, %32
  br i1 %33, label %34, label %36

34:                                               ; preds = %28, %11
  %35 = call i32 @puts(ptr noundef @.str.3)
  br label %42

36:                                               ; preds = %28
  %37 = load double, ptr %4, align 8, !tbaa !9
  %38 = load i32, ptr @B, align 4, !tbaa !5
  %39 = sitofp i32 %38 to double
  %40 = fdiv double %37, %39
  %41 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, double noundef %40)
  br label %42

42:                                               ; preds = %36, %34
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  br label %43

43:                                               ; preds = %42
  %44 = load i32, ptr %3, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %3, align 4, !tbaa !5
  br label %6, !llvm.loop !11

46:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, 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

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

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #3

declare i32 @puts(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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = !{!"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"

@n = external dso_local global double, align 8
@m = external dso_local global double, align 8
@A = external dso_local global i32, align 4
@B = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [11 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [7 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  %2 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %3 = load i32, ptr %1, align 4, !tbaa !5
  %.not6 = icmp slt i32 %3, 1
  br i1 %.not6, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %26, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4
  ret i32 0

.lr.ph:                                           ; preds = %0, %26
  %.07 = phi i32 [ %27, %26 ], [ 1, %0 ]
  %4 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %.07)
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.2, ptr noundef nonnull @n, ptr noundef nonnull @m, ptr noundef nonnull @A, ptr noundef nonnull @B)
  %6 = load double, ptr @m, align 8, !tbaa !9
  %7 = load i32, ptr @A, align 4, !tbaa !5
  %8 = load i32, ptr @B, align 4, !tbaa !5
  %9 = add nsw i32 %8, %7
  %10 = sitofp i32 %9 to double
  %11 = load double, ptr @n, align 8, !tbaa !9
  %12 = sitofp i32 %7 to double
  %13 = fneg double %11
  %14 = fmul double %12, %13
  %15 = call double @llvm.fmuladd.f64(double %6, double %10, double %14)
  %16 = fcmp olt double %15, 0.000000e+00
  br i1 %16, label %21, label %17

17:                                               ; preds = %.lr.ph
  %18 = sitofp i32 %8 to double
  %19 = fmul double %18, 1.000000e+01
  %20 = fcmp ogt double %15, %19
  br i1 %20, label %21, label %23

21:                                               ; preds = %17, %.lr.ph
  %22 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.3)
  br label %26

23:                                               ; preds = %17
  %24 = fdiv double %15, %18
  %25 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, double noundef %24)
  br label %26

26:                                               ; preds = %23, %21
  %27 = add nuw nsw i32 %.07, 1
  %28 = load i32, ptr %1, align 4, !tbaa !5
  %.not.not = icmp slt i32 %.07, %28
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !11
}

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

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #3

; Function Attrs: nofree nounwind
declare noundef i32 @puts(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 nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = !{!"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,ReassociatePass,SROAPass,SimplifyCFGPass