; LLVM IR from martinus/nanobench :: src/comparisons/nanobench/main.ll (ZN6ankerl9nanobench3RngC2Em)

; 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"

%"class.ankerl::nanobench::Rng" = type { i64, i64 }

; 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 nounwind uwtable
declare dso_local noundef i64 @_ZN6ankerl9nanobench10splitMix64ERm(ptr noundef nonnull align 8 dereferenceable(8)) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN6ankerl9nanobench3RngC2Em(ptr noundef nonnull align 8 dereferenceable(16) %0, i64 noundef %1) unnamed_addr #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !9
  %6 = load ptr, ptr %3, align 8
  %7 = getelementptr inbounds %"class.ankerl::nanobench::Rng", ptr %6, i32 0, i32 0
  %8 = call noundef i64 @_ZN6ankerl9nanobench10splitMix64ERm(ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  store i64 %8, ptr %7, align 8, !tbaa !11
  %9 = getelementptr inbounds %"class.ankerl::nanobench::Rng", ptr %6, i32 0, i32 1
  %10 = call noundef i64 @_ZN6ankerl9nanobench10splitMix64ERm(ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  store i64 %10, ptr %9, align 8, !tbaa !13
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 0, ptr %5, align 8, !tbaa !9
  br label %11

11:                                               ; preds = %17, %2
  %12 = load i64, ptr %5, align 8, !tbaa !9
  %13 = icmp ult i64 %12, 10
  br i1 %13, label %15, label %14

14:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %20

15:                                               ; preds = %11
  %16 = call noundef i64 @_ZN6ankerl9nanobench3RngclEv(ptr noundef nonnull align 8 dereferenceable(16) %6) #3
  br label %17

17:                                               ; preds = %15
  %18 = load i64, ptr %5, align 8, !tbaa !9
  %19 = add i64 %18, 1
  store i64 %19, ptr %5, align 8, !tbaa !9
  br label %11, !llvm.loop !14

20:                                               ; preds = %14
  ret void
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZN6ankerl9nanobench3RngclEv(ptr noundef nonnull align 8 dereferenceable(16)) #2 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { inlinehint 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 #3 = { 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 = !{!12, !10, i64 0}
!12 = !{!"_ZTSN6ankerl9nanobench3RngE", !10, i64 0, !10, i64 8}
!13 = !{!12, !10, i64 8}
!14 = distinct !{!14, !15}
!15 = !{!"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 nounwind uwtable
declare dso_local noundef i64 @_ZN6ankerl9nanobench10splitMix64ERm(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN6ankerl9nanobench3RngC2Em(ptr noundef nonnull align 8 dereferenceable(16) %0, i64 noundef %1) unnamed_addr #0 align 2 {
  %3 = alloca i64, align 8
  store i64 %1, ptr %3, align 8, !tbaa !5
  %4 = call noundef i64 @_ZN6ankerl9nanobench10splitMix64ERm(ptr noundef nonnull align 8 dereferenceable(8) %3) #2
  store i64 %4, ptr %0, align 8, !tbaa !9
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  %6 = call noundef i64 @_ZN6ankerl9nanobench10splitMix64ERm(ptr noundef nonnull align 8 dereferenceable(8) %3) #2
  store i64 %6, ptr %5, align 8, !tbaa !11
  %7 = call noundef i64 @_ZN6ankerl9nanobench3RngclEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #2
  %8 = call noundef i64 @_ZN6ankerl9nanobench3RngclEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #2
  %9 = call noundef i64 @_ZN6ankerl9nanobench3RngclEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #2
  %10 = call noundef i64 @_ZN6ankerl9nanobench3RngclEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #2
  %11 = call noundef i64 @_ZN6ankerl9nanobench3RngclEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #2
  %12 = call noundef i64 @_ZN6ankerl9nanobench3RngclEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #2
  %13 = call noundef i64 @_ZN6ankerl9nanobench3RngclEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #2
  %14 = call noundef i64 @_ZN6ankerl9nanobench3RngclEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #2
  %15 = call noundef i64 @_ZN6ankerl9nanobench3RngclEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #2
  %16 = call noundef i64 @_ZN6ankerl9nanobench3RngclEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #2
  ret void
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZN6ankerl9nanobench3RngclEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #1 align 2

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 = { inlinehint 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 #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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"_ZTSN6ankerl9nanobench3RngE", !6, i64 0, !6, i64 8}
!11 = !{!10, !6, i64 8}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,SROAPass,SimplifyCFGPass