; LLVM IR from NishkarshRaj/Design-and-Analysis-of-Algorithms :: Divide And Conquer (binarysearch)

; 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 [28 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [152 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [32 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [36 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [39 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [30 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [37 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [28 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [46 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local i32 @binarysearch(ptr noundef, i32 noundef, 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: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca double, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  %11 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  %12 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  %13 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.3, ptr noundef %6)
  %15 = load i32, ptr %6, align 4, !tbaa !5
  %16 = zext i32 %15 to i64
  %17 = call ptr @llvm.stacksave.p0()
  store ptr %17, ptr %9, align 8
  %18 = alloca i32, i64 %16, align 16
  store i64 %16, ptr %10, align 8
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %19

19:                                               ; preds = %31, %0
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = load i32, ptr %6, align 4, !tbaa !5
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %23, label %34

23:                                               ; preds = %19
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = add nsw i32 %24, 1
  %26 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %25)
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds i32, ptr %18, i64 %28
  %30 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.3, ptr noundef %29)
  br label %31

31:                                               ; preds = %23
  %32 = load i32, ptr %5, align 4, !tbaa !5
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %5, align 4, !tbaa !5
  br label %19, !llvm.loop !9

34:                                               ; preds = %19
  %35 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  %36 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.3, ptr noundef %8)
  %37 = call i32 (ptr, ...) @printf(ptr noundef @.str.6)
  %38 = call i64 @clock() #5
  store i64 %38, ptr %2, align 8, !tbaa !11
  %39 = load i32, ptr %6, align 4, !tbaa !5
  %40 = load i32, ptr %8, align 4, !tbaa !5
  %41 = call i32 @binarysearch(ptr noundef %18, i32 noundef %39, i32 noundef %40)
  store i32 %41, ptr %7, align 4, !tbaa !5
  %42 = call i64 @clock() #5
  store i64 %42, ptr %3, align 8, !tbaa !11
  %43 = load i32, ptr %7, align 4, !tbaa !5
  %44 = icmp eq i32 %43, 0
  br i1 %44, label %45, label %47

45:                                               ; preds = %34
  %46 = call i32 (ptr, ...) @printf(ptr noundef @.str.7)
  br label %49

47:                                               ; preds = %34
  %48 = call i32 (ptr, ...) @printf(ptr noundef @.str.8)
  br label %49

49:                                               ; preds = %47, %45
  %50 = load i64, ptr %3, align 8, !tbaa !11
  %51 = sitofp i64 %50 to double
  %52 = load i64, ptr %2, align 8, !tbaa !11
  %53 = sdiv i64 %52, 1000000
  %54 = sitofp i64 %53 to double
  %55 = fsub double %51, %54
  store double %55, ptr %4, align 8, !tbaa !13
  %56 = load double, ptr %4, align 8, !tbaa !13
  %57 = call i32 (ptr, ...) @printf(ptr noundef @.str.9, double noundef %56)
  store i32 0, ptr %1, align 4
  %58 = load ptr, ptr %9, align 8
  call void @llvm.stackrestore.p0(ptr %58)
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #5
  %59 = load i32, ptr %1, align 4
  ret i32 %59
}

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

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

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

; Function Attrs: nounwind
declare i64 @clock() #4

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #3

attributes #0 = { 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 = { 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 willreturn }
attributes #4 = { 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/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"double", !7, i64 0}


; 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 [28 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [152 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [32 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [36 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [39 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [30 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [37 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [28 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [46 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local i32 @binarysearch(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = 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
  %3 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %4 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %5 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.3, ptr noundef nonnull %1)
  %7 = load i32, ptr %1, align 4, !tbaa !5
  %8 = zext i32 %7 to i64
  %9 = call ptr @llvm.stacksave.p0()
  %10 = alloca i32, i64 %8, align 16
  %11 = load i32, ptr %1, align 4, !tbaa !5
  %12 = icmp sgt i32 %11, 0
  br i1 %12, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %13 = trunc nuw nsw i64 %indvars.iv.next to i32
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %13)
  %15 = getelementptr inbounds i32, ptr %10, i64 %indvars.iv
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.3, ptr noundef nonnull %15)
  %17 = load i32, ptr %1, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = icmp slt i64 %indvars.iv.next, %18
  br i1 %19, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %0
  %20 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  %21 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.3, ptr noundef nonnull %2)
  %22 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.6)
  %23 = call i64 @clock() #5
  %24 = load i32, ptr %1, align 4, !tbaa !5
  %25 = load i32, ptr %2, align 4, !tbaa !5
  %26 = call i32 @binarysearch(ptr noundef nonnull %10, i32 noundef %24, i32 noundef %25)
  %27 = call i64 @clock() #5
  %28 = icmp eq i32 %26, 0
  %.str.7..str.8 = select i1 %28, ptr @.str.7, ptr @.str.8
  %29 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.7..str.8)
  %30 = sitofp i64 %27 to double
  %31 = sdiv i64 %23, 1000000
  %32 = sitofp i64 %31 to double
  %33 = fsub double %30, %32
  %34 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.9, double noundef %33)
  call void @llvm.stackrestore.p0(ptr %9)
  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
}

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

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

; Function Attrs: nounwind
declare i64 @clock() local_unnamed_addr #4

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #3

attributes #0 = { 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 willreturn }
attributes #4 = { 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/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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