; LLVM IR from CerebusOSS/CereLink :: cbhwlib/cbHwlibHi.ll (Z25cbGetNumActiveInstrumentsv)

; 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: mustprogress uwtable
declare dso_local noundef i32 @_Z14cbGetNspStatusj(i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z25cbGetNumActiveInstrumentsv() #1 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #2
  store i32 0, ptr %1, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #2
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %3

3:                                                ; preds = %16, %0
  %4 = load i32, ptr %2, align 4, !tbaa !5
  %5 = icmp slt i32 %4, 3
  br i1 %5, label %7, label %6

6:                                                ; preds = %3
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #2
  br label %19

7:                                                ; preds = %3
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = add nsw i32 %8, 1
  %10 = call noundef i32 @_Z14cbGetNspStatusj(i32 noundef %9)
  %11 = icmp eq i32 3, %10
  br i1 %11, label %12, label %15

12:                                               ; preds = %7
  %13 = load i32, ptr %1, align 4, !tbaa !5
  %14 = add i32 %13, 1
  store i32 %14, ptr %1, align 4, !tbaa !5
  br label %15

15:                                               ; preds = %12, %7
  br label %16

16:                                               ; preds = %15
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %2, align 4, !tbaa !5
  br label %3, !llvm.loop !9

19:                                               ; preds = %6
  %20 = load i32, ptr %1, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #2
  ret i32 %20
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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 uwtable
declare dso_local noundef i32 @_Z14cbGetNspStatusj(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z25cbGetNumActiveInstrumentsv() local_unnamed_addr #0 {
  %1 = tail call noundef i32 @_Z14cbGetNspStatusj(i32 noundef 1)
  %2 = icmp eq i32 %1, 3
  %3 = zext i1 %2 to i32
  %4 = tail call noundef i32 @_Z14cbGetNspStatusj(i32 noundef 2)
  %5 = icmp eq i32 %4, 3
  %6 = zext i1 %5 to i32
  %spec.select.1 = add nuw nsw i32 %3, %6
  %7 = tail call noundef i32 @_Z14cbGetNspStatusj(i32 noundef 3)
  %8 = icmp eq i32 %7, 3
  %9 = zext i1 %8 to i32
  %spec.select.2 = add nuw nsw i32 %spec.select.1, %9
  ret i32 %spec.select.2
}

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" }

!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)"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopRotatePass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass