; LLVM IR from vteromero/VTEnc :: tests (timestamps)

; 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @has_ascending_order(ptr noundef %0, i64 noundef %1) #1 {
  %3 = alloca i32, align 4
  %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 1, ptr %6, align 8, !tbaa !9
  br label %8

8:                                                ; preds = %25, %2
  %9 = load i64, ptr %6, align 8, !tbaa !9
  %10 = load i64, ptr %5, align 8, !tbaa !9
  %11 = icmp ult i64 %9, %10
  br i1 %11, label %12, label %28

12:                                               ; preds = %8
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = load i64, ptr %6, align 8, !tbaa !9
  %15 = getelementptr inbounds i32, ptr %13, i64 %14
  %16 = load i32, ptr %15, align 4, !tbaa !11
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = load i64, ptr %6, align 8, !tbaa !9
  %19 = sub i64 %18, 1
  %20 = getelementptr inbounds i32, ptr %17, i64 %19
  %21 = load i32, ptr %20, align 4, !tbaa !11
  %22 = icmp ult i32 %16, %21
  br i1 %22, label %23, label %24

23:                                               ; preds = %12
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %29

24:                                               ; preds = %12
  br label %25

25:                                               ; preds = %24
  %26 = load i64, ptr %6, align 8, !tbaa !9
  %27 = add i64 %26, 1
  store i64 %27, ptr %6, align 8, !tbaa !9
  br label %8, !llvm.loop !13

28:                                               ; preds = %8
  store i32 1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %29

29:                                               ; preds = %28, %23
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %30 = load i32, ptr %3, align 4
  ret i32 %30
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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 range(i32 0, 2) i32 @has_ascending_order(ptr nocapture noundef readonly %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = icmp ugt i64 %1, 1
  br i1 %3, label %.lr.ph, label %._crit_edge

4:                                                ; preds = %.lr.ph
  %5 = add nuw i64 %.08, 1
  %exitcond.not = icmp eq i64 %5, %1
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

.lr.ph:                                           ; preds = %2, %4
  %.08 = phi i64 [ %5, %4 ], [ 1, %2 ]
  %6 = getelementptr inbounds i32, ptr %0, i64 %.08
  %7 = load i32, ptr %6, align 4, !tbaa !7
  %8 = getelementptr i8, ptr %6, i64 -4
  %9 = load i32, ptr %8, align 4, !tbaa !7
  %10 = icmp ult i32 %7, %9
  br i1 %10, label %._crit_edge, label %4

._crit_edge:                                      ; preds = %.lr.ph, %4, %2
  %.07 = phi i32 [ 1, %2 ], [ 1, %4 ], [ 0, %.lr.ph ]
  ret i32 %.07
}

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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{!8, !8, i64 0}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}


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