; LLVM IR from MakeContributions/DSA :: algorithms/CPlusPlus/Recursion/binary-search.ll (Z6searchPiiiii)

; 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: mustprogress uwtable
define dso_local noundef i32 @_Z6searchPiiiii(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) #0 {
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store i32 %1, ptr %8, align 4, !tbaa !9
  store i32 %2, ptr %9, align 4, !tbaa !9
  store i32 %3, ptr %10, align 4, !tbaa !9
  store i32 %4, ptr %11, align 4, !tbaa !9
  %14 = load i32, ptr %9, align 4, !tbaa !9
  %15 = load i32, ptr %10, align 4, !tbaa !9
  %16 = icmp sgt i32 %14, %15
  br i1 %16, label %17, label %18

17:                                               ; preds = %5
  store i32 -1, ptr %6, align 4
  br label %59

18:                                               ; preds = %5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #2
  %19 = load i32, ptr %9, align 4, !tbaa !9
  %20 = load i32, ptr %10, align 4, !tbaa !9
  %21 = load i32, ptr %9, align 4, !tbaa !9
  %22 = sub nsw i32 %20, %21
  %23 = sdiv i32 %22, 2
  %24 = add nsw i32 %19, %23
  store i32 %24, ptr %12, align 4, !tbaa !9
  %25 = load ptr, ptr %7, align 8, !tbaa !5
  %26 = load i32, ptr %12, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds i32, ptr %25, i64 %27
  %29 = load i32, ptr %28, align 4, !tbaa !9
  %30 = load i32, ptr %11, align 4, !tbaa !9
  %31 = icmp eq i32 %29, %30
  br i1 %31, label %32, label %34

32:                                               ; preds = %18
  %33 = load i32, ptr %12, align 4, !tbaa !9
  store i32 %33, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %58

34:                                               ; preds = %18
  %35 = load ptr, ptr %7, align 8, !tbaa !5
  %36 = load i32, ptr %12, align 4, !tbaa !9
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds i32, ptr %35, i64 %37
  %39 = load i32, ptr %38, align 4, !tbaa !9
  %40 = load i32, ptr %11, align 4, !tbaa !9
  %41 = icmp sgt i32 %39, %40
  br i1 %41, label %42, label %50

42:                                               ; preds = %34
  %43 = load ptr, ptr %7, align 8, !tbaa !5
  %44 = load i32, ptr %8, align 4, !tbaa !9
  %45 = load i32, ptr %9, align 4, !tbaa !9
  %46 = load i32, ptr %12, align 4, !tbaa !9
  %47 = sub nsw i32 %46, 1
  %48 = load i32, ptr %11, align 4, !tbaa !9
  %49 = call noundef i32 @_Z6searchPiiiii(ptr noundef %43, i32 noundef %44, i32 noundef %45, i32 noundef %47, i32 noundef %48)
  store i32 %49, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %58

50:                                               ; preds = %34
  %51 = load ptr, ptr %7, align 8, !tbaa !5
  %52 = load i32, ptr %8, align 4, !tbaa !9
  %53 = load i32, ptr %12, align 4, !tbaa !9
  %54 = add nsw i32 %53, 1
  %55 = load i32, ptr %10, align 4, !tbaa !9
  %56 = load i32, ptr %11, align 4, !tbaa !9
  %57 = call noundef i32 @_Z6searchPiiiii(ptr noundef %51, i32 noundef %52, i32 noundef %54, i32 noundef %55, i32 noundef %56)
  store i32 %57, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %58

58:                                               ; preds = %50, %42, %32
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #2
  br label %59

59:                                               ; preds = %58, %17
  %60 = load i32, ptr %6, align 4
  ret i32 %60
}

; 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 = { mustprogress 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef i32 @_Z6searchPiiiii(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) local_unnamed_addr #0 {
  %6 = icmp sgt i32 %2, %3
  br i1 %6, label %tailrecurse.outer._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %5, %tailrecurse.outer
  %.tr28.ph35 = phi i32 [ %.tr2831, %tailrecurse.outer ], [ %3, %5 ]
  %.tr27.ph34 = phi i32 [ %18, %tailrecurse.outer ], [ %2, %5 ]
  br label %7

7:                                                ; preds = %.lr.ph, %tailrecurse
  %.tr2831 = phi i32 [ %.tr28.ph35, %.lr.ph ], [ %17, %tailrecurse ]
  %8 = sub nsw i32 %.tr2831, %.tr27.ph34
  %9 = sdiv i32 %8, 2
  %10 = add nsw i32 %9, %.tr27.ph34
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds i32, ptr %0, i64 %11
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = icmp eq i32 %13, %4
  br i1 %14, label %tailrecurse.outer._crit_edge, label %15

15:                                               ; preds = %7
  %16 = icmp sgt i32 %13, %4
  br i1 %16, label %tailrecurse, label %tailrecurse.outer

tailrecurse:                                      ; preds = %15
  %17 = add nsw i32 %10, -1
  %.not37 = icmp sgt i32 %8, 1
  br i1 %.not37, label %7, label %tailrecurse.outer._crit_edge

tailrecurse.outer:                                ; preds = %15
  %18 = add nsw i32 %10, 1
  %.not = icmp slt i32 %10, %.tr2831
  br i1 %.not, label %.lr.ph, label %tailrecurse.outer._crit_edge

tailrecurse.outer._crit_edge:                     ; preds = %tailrecurse.outer, %tailrecurse, %7, %5
  %.1 = phi i32 [ -1, %5 ], [ %10, %7 ], [ -1, %tailrecurse ], [ -1, %tailrecurse.outer ]
  ret i32 %.1
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn 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++ TBAA"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass