; LLVM IR from zephyrproject-rtos/zephyr :: scripts/native_simulator/common/src (nsi_tasks)

; 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"

@nsi_run_tasks.nsi_pre_tasks = external hidden global [8 x ptr], align 16

; Function Attrs: nounwind uwtable
define dso_local void @nsi_run_tasks(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  %4 = load i32, ptr %2, align 4, !tbaa !5
  %5 = sext i32 %4 to i64
  %6 = getelementptr inbounds [8 x ptr], ptr @nsi_run_tasks.nsi_pre_tasks, i64 0, i64 %5
  %7 = load ptr, ptr %6, align 8, !tbaa !9
  store ptr %7, ptr %3, align 8, !tbaa !9
  br label %8

8:                                                ; preds = %24, %1
  %9 = load ptr, ptr %3, align 8, !tbaa !9
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = add nsw i32 %10, 1
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [8 x ptr], ptr @nsi_run_tasks.nsi_pre_tasks, i64 0, i64 %12
  %14 = load ptr, ptr %13, align 8, !tbaa !9
  %15 = icmp ult ptr %9, %14
  br i1 %15, label %16, label %27

16:                                               ; preds = %8
  %17 = load ptr, ptr %3, align 8, !tbaa !9
  %18 = load ptr, ptr %17, align 8, !tbaa !9
  %19 = icmp ne ptr %18, null
  br i1 %19, label %20, label %23

20:                                               ; preds = %16
  %21 = load ptr, ptr %3, align 8, !tbaa !9
  %22 = load ptr, ptr %21, align 8, !tbaa !9
  call void %22()
  br label %23

23:                                               ; preds = %20, %16
  br label %24

24:                                               ; preds = %23
  %25 = load ptr, ptr %3, align 8, !tbaa !9
  %26 = getelementptr inbounds ptr, ptr %25, i32 1
  store ptr %26, ptr %3, align 8, !tbaa !9
  br label %8, !llvm.loop !11

27:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret void
}

; 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"

@nsi_run_tasks.nsi_pre_tasks = external hidden local_unnamed_addr global [8 x ptr], align 16

; Function Attrs: nounwind uwtable
define dso_local void @nsi_run_tasks(i32 noundef %0) local_unnamed_addr #0 {
  %2 = sext i32 %0 to i64
  %3 = getelementptr inbounds [8 x ptr], ptr @nsi_run_tasks.nsi_pre_tasks, i64 0, i64 %2
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = add nsw i32 %0, 1
  %6 = sext i32 %5 to i64
  %7 = getelementptr inbounds [8 x ptr], ptr @nsi_run_tasks.nsi_pre_tasks, i64 0, i64 %6
  %8 = load ptr, ptr %7, align 8, !tbaa !5
  %9 = icmp ult ptr %4, %8
  br i1 %9, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %13
  %10 = phi ptr [ %14, %13 ], [ %8, %1 ]
  %.06 = phi ptr [ %15, %13 ], [ %4, %1 ]
  %11 = load ptr, ptr %.06, align 8, !tbaa !5
  %.not = icmp eq ptr %11, null
  br i1 %.not, label %13, label %12

12:                                               ; preds = %.lr.ph
  tail call void %11() #1
  %.pre = load ptr, ptr %7, align 8, !tbaa !5
  br label %13

13:                                               ; preds = %.lr.ph, %12
  %14 = phi ptr [ %10, %.lr.ph ], [ %.pre, %12 ]
  %15 = getelementptr inbounds i8, ptr %.06, i64 8
  %16 = icmp ult ptr %15, %14
  br i1 %16, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %13, %1
  ret void
}

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 = { 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass