; LLVM IR from travisdowns/sort-bench :: bench.ll (Z9is_sortedPKmm)

; 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 nounwind uwtable
define dso_local noundef zeroext i1 @_Z9is_sortedPKmm(ptr noundef %0, i64 noundef %1) #0 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  store i64 0, ptr %6, align 8, !tbaa !9
  br label %8

8:                                                ; preds = %27, %2
  %9 = load i64, ptr %6, align 8, !tbaa !9
  %10 = add i64 %9, 1
  %11 = load i64, ptr %5, align 8, !tbaa !9
  %12 = icmp ult i64 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %8
  store i32 2, ptr %7, align 4
  br label %30

14:                                               ; preds = %8
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = load i64, ptr %6, align 8, !tbaa !9
  %17 = getelementptr inbounds i64, ptr %15, i64 %16
  %18 = load i64, ptr %17, align 8, !tbaa !9
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = load i64, ptr %6, align 8, !tbaa !9
  %21 = add i64 %20, 1
  %22 = getelementptr inbounds i64, ptr %19, i64 %21
  %23 = load i64, ptr %22, align 8, !tbaa !9
  %24 = icmp ugt i64 %18, %23
  br i1 %24, label %25, label %26

25:                                               ; preds = %14
  store i1 false, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %30

26:                                               ; preds = %14
  br label %27

27:                                               ; preds = %26
  %28 = load i64, ptr %6, align 8, !tbaa !9
  %29 = add i64 %28, 1
  store i64 %29, ptr %6, align 8, !tbaa !9
  br label %8, !llvm.loop !11

30:                                               ; preds = %25, %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %31 = load i32, ptr %7, align 4
  switch i32 %31, label %35 [
    i32 2, label %32
    i32 1, label %33
  ]

32:                                               ; preds = %30
  store i1 true, ptr %3, align 1
  br label %33

33:                                               ; preds = %32, %30
  %34 = load i1, ptr %3, align 1
  ret i1 %34

35:                                               ; preds = %30
  unreachable
}

; 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 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef zeroext i1 @_Z9is_sortedPKmm(ptr nocapture noundef readonly %0, i64 noundef %1) local_unnamed_addr #0 {
  %umax = tail call i64 @llvm.umax.i64(i64 %1, i64 1)
  %3 = add i64 %umax, -1
  br label %4

4:                                                ; preds = %6, %2
  %.08 = phi i64 [ 0, %2 ], [ %5, %6 ]
  %5 = add nuw i64 %.08, 1
  %exitcond = icmp eq i64 %.08, %3
  br i1 %exitcond, label %12, label %6

6:                                                ; preds = %4
  %7 = getelementptr inbounds i64, ptr %0, i64 %.08
  %8 = load i64, ptr %7, align 8, !tbaa !5
  %9 = getelementptr inbounds i64, ptr %0, i64 %5
  %10 = load i64, ptr %9, align 8, !tbaa !5
  %11 = icmp ugt i64 %8, %10
  br i1 %11, label %12, label %4, !llvm.loop !9

12:                                               ; preds = %6, %4
  %13 = icmp uge i64 %5, %1
  ret i1 %13
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umax.i64(i64, i64) #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" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass