; LLVM IR from AlgoGenesis/C :: Searching Algorithms/Exponential Search (Program)

; 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
declare dso_local i32 @binarySearch(ptr noundef, i32 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 @exponentialSearch(ptr noundef %0, i32 noundef %1, i32 noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = getelementptr inbounds i32, ptr %9, i64 0
  %11 = load i32, ptr %10, align 4, !tbaa !9
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = icmp eq i32 %11, %12
  br i1 %13, label %14, label %15

14:                                               ; preds = %3
  store i32 0, ptr %4, align 4
  br label %49

15:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 1, ptr %8, align 4, !tbaa !9
  br label %16

16:                                               ; preds = %30, %15
  %17 = load i32, ptr %8, align 4, !tbaa !9
  %18 = load i32, ptr %6, align 4, !tbaa !9
  %19 = icmp slt i32 %17, %18
  br i1 %19, label %20, label %28

20:                                               ; preds = %16
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = load i32, ptr %8, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds i32, ptr %21, i64 %23
  %25 = load i32, ptr %24, align 4, !tbaa !9
  %26 = load i32, ptr %7, align 4, !tbaa !9
  %27 = icmp sle i32 %25, %26
  br label %28

28:                                               ; preds = %20, %16
  %29 = phi i1 [ false, %16 ], [ %27, %20 ]
  br i1 %29, label %30, label %33

30:                                               ; preds = %28
  %31 = load i32, ptr %8, align 4, !tbaa !9
  %32 = mul nsw i32 %31, 2
  store i32 %32, ptr %8, align 4, !tbaa !9
  br label %16, !llvm.loop !11

33:                                               ; preds = %28
  %34 = load ptr, ptr %5, align 8, !tbaa !5
  %35 = load i32, ptr %8, align 4, !tbaa !9
  %36 = sdiv i32 %35, 2
  %37 = load i32, ptr %8, align 4, !tbaa !9
  %38 = load i32, ptr %6, align 4, !tbaa !9
  %39 = icmp slt i32 %37, %38
  br i1 %39, label %40, label %42

40:                                               ; preds = %33
  %41 = load i32, ptr %8, align 4, !tbaa !9
  br label %45

42:                                               ; preds = %33
  %43 = load i32, ptr %6, align 4, !tbaa !9
  %44 = sub nsw i32 %43, 1
  br label %45

45:                                               ; preds = %42, %40
  %46 = phi i32 [ %41, %40 ], [ %44, %42 ]
  %47 = load i32, ptr %7, align 4, !tbaa !9
  %48 = call i32 @binarySearch(ptr noundef %34, i32 noundef %36, i32 noundef %46, i32 noundef %47)
  store i32 %48, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %49

49:                                               ; preds = %45, %14
  %50 = load i32, ptr %4, align 4
  ret i32 %50
}

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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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: nounwind uwtable
declare dso_local i32 @binarySearch(ptr noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i32 @exponentialSearch(ptr noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = load i32, ptr %0, align 4, !tbaa !5
  %5 = icmp eq i32 %4, %2
  br i1 %5, label %17, label %.preheader

.preheader:                                       ; preds = %3
  %6 = icmp sgt i32 %1, 1
  br i1 %6, label %.lr.ph, label %.critedge.thread

.lr.ph:                                           ; preds = %.preheader, %10
  %.017 = phi i32 [ %11, %10 ], [ 1, %.preheader ]
  %7 = zext nneg i32 %.017 to i64
  %8 = getelementptr inbounds i32, ptr %0, i64 %7
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %.not = icmp sgt i32 %9, %2
  br i1 %.not, label %.loopexit, label %10

10:                                               ; preds = %.lr.ph
  %11 = shl nsw i32 %.017, 1
  %12 = icmp slt i32 %11, %1
  br i1 %12, label %.lr.ph, label %.critedge.thread, !llvm.loop !9

.critedge.thread:                                 ; preds = %10, %.preheader
  %.0.lcssa.ph = phi i32 [ 1, %.preheader ], [ %11, %10 ]
  %13 = add nsw i32 %1, -1
  br label %.loopexit

.loopexit:                                        ; preds = %.lr.ph, %.critedge.thread
  %.in = phi i32 [ %.0.lcssa.ph, %.critedge.thread ], [ %.017, %.lr.ph ]
  %14 = phi i32 [ %13, %.critedge.thread ], [ %.017, %.lr.ph ]
  %15 = lshr i32 %.in, 1
  %16 = tail call i32 @binarySearch(ptr noundef nonnull %0, i32 noundef %15, i32 noundef %14, i32 noundef %2)
  br label %17

17:                                               ; preds = %3, %.loopexit
  %.015 = phi i32 [ %16, %.loopexit ], [ 0, %3 ]
  ret i32 %.015
}

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" }

!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: ADCEPass,CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass