; LLVM IR from ryanlayer/giggle :: src (bpt)

; 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: nounwind uwtable
define dso_local i32 @b_search(i32 noundef %0, ptr noundef %1, i32 noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !5
  %11 = load i32, ptr %5, align 4, !tbaa !5
  %12 = load ptr, ptr %6, align 8, !tbaa !9
  %13 = load i32, ptr %7, align 4, !tbaa !5
  %14 = sub i32 %13, 1
  %15 = zext i32 %14 to i64
  %16 = getelementptr inbounds i32, ptr %12, i64 %15
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %18 = icmp ugt i32 %11, %17
  br i1 %18, label %19, label %21

19:                                               ; preds = %3
  %20 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %20, ptr %4, align 4
  br label %47

21:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 -1, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %22 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %22, ptr %9, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  br label %23

23:                                               ; preds = %44, %21
  %24 = load i32, ptr %9, align 4, !tbaa !5
  %25 = load i32, ptr %8, align 4, !tbaa !5
  %26 = sub nsw i32 %24, %25
  %27 = icmp sgt i32 %26, 1
  br i1 %27, label %28, label %45

28:                                               ; preds = %23
  %29 = load i32, ptr %9, align 4, !tbaa !5
  %30 = load i32, ptr %8, align 4, !tbaa !5
  %31 = add nsw i32 %29, %30
  %32 = sdiv i32 %31, 2
  store i32 %32, ptr %10, align 4, !tbaa !5
  %33 = load ptr, ptr %6, align 8, !tbaa !9
  %34 = load i32, ptr %10, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds i32, ptr %33, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !5
  %38 = load i32, ptr %5, align 4, !tbaa !5
  %39 = icmp ult i32 %37, %38
  br i1 %39, label %40, label %42

40:                                               ; preds = %28
  %41 = load i32, ptr %10, align 4, !tbaa !5
  store i32 %41, ptr %8, align 4, !tbaa !5
  br label %44

42:                                               ; preds = %28
  %43 = load i32, ptr %10, align 4, !tbaa !5
  store i32 %43, ptr %9, align 4, !tbaa !5
  br label %44

44:                                               ; preds = %42, %40
  br label %23, !llvm.loop !11

45:                                               ; preds = %23
  %46 = load i32, ptr %9, align 4, !tbaa !5
  store i32 %46, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %47

47:                                               ; preds = %45, %19
  %48 = load i32, ptr %4, align 4
  ret i32 %48
}

; 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

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 = { 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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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"

; Function Attrs: nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local i32 @b_search(i32 noundef %0, ptr nocapture noundef readonly %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = add i32 %2, -1
  %5 = zext i32 %4 to i64
  %6 = getelementptr inbounds i32, ptr %1, i64 %5
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = icmp uge i32 %7, %0
  %9 = icmp sgt i32 %2, 0
  %or.cond = and i1 %8, %9
  br i1 %or.cond, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.01520 = phi i32 [ %.015., %.lr.ph ], [ %2, %3 ]
  %.01619 = phi i32 [ %..016, %.lr.ph ], [ -1, %3 ]
  %10 = add nsw i32 %.01520, %.01619
  %11 = sdiv i32 %10, 2
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds i32, ptr %1, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = icmp ult i32 %14, %0
  %..016 = select i1 %15, i32 %11, i32 %.01619
  %.015. = select i1 %15, i32 %.01520, i32 %11
  %16 = sub nsw i32 %.015., %..016
  %17 = icmp sgt i32 %16, 1
  br i1 %17, label %.lr.ph, label %.loopexit, !llvm.loop !9

.loopexit:                                        ; preds = %.lr.ph, %3
  %.0 = phi i32 [ %2, %3 ], [ %.015., %.lr.ph ]
  ret i32 %.0
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: read) 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 = !{!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: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass