; LLVM IR from yinqiwen/ardb :: src/common/channel/timer/timer.ll (ZN4ardb5Timer19GenerateTimerTaskIDEv)

; 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"

@_ZZN4ardb5Timer19GenerateTimerTaskIDEvE7base_id = external hidden global i32, align 4

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN4ardb5Timer19GenerateTimerTaskIDEv(ptr noundef nonnull align 8 dereferenceable(32) %0) unnamed_addr #0 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  %4 = load i32, ptr @_ZZN4ardb5Timer19GenerateTimerTaskIDEvE7base_id, align 4, !tbaa !9
  %5 = icmp uge i32 %4, 2147483647
  br i1 %5, label %6, label %7

6:                                                ; preds = %1
  store i32 1, ptr @_ZZN4ardb5Timer19GenerateTimerTaskIDEvE7base_id, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %6, %1
  %8 = load i32, ptr @_ZZN4ardb5Timer19GenerateTimerTaskIDEvE7base_id, align 4, !tbaa !9
  %9 = add i32 %8, 1
  store i32 %9, ptr @_ZZN4ardb5Timer19GenerateTimerTaskIDEvE7base_id, align 4, !tbaa !9
  ret i32 %8
}

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" }

!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"

@_ZZN4ardb5Timer19GenerateTimerTaskIDEvE7base_id = external hidden local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef i32 @_ZN4ardb5Timer19GenerateTimerTaskIDEv(ptr nocapture noundef nonnull readnone align 8 dereferenceable(32) %0) unnamed_addr #0 align 2 {
  %2 = load i32, ptr @_ZZN4ardb5Timer19GenerateTimerTaskIDEvE7base_id, align 4, !tbaa !5
  %3 = icmp ugt i32 %2, 2147483646
  %spec.select = select i1 %3, i32 1, i32 %2
  %4 = add nuw nsw i32 %spec.select, 1
  store i32 %4, ptr @_ZZN4ardb5Timer19GenerateTimerTaskIDEvE7base_id, align 4, !tbaa !5
  ret i32 %spec.select
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, argmem: none, inaccessiblemem: none) 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,DSEPass,GVNPass,GlobalOptPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass