; LLVM IR from buresjan/optim_lbm :: nomad/src/Math/RandomPickup.ll (ZN9NOMAD_4_312RandomPickup5resetEv)

; 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.NOMAD_4_3::RandomPickup" = type { %"class.NOMAD_4_3::Uncopyable", i64, i64, ptr }
%"class.NOMAD_4_3::Uncopyable" = type { ptr }

; 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
define dso_local void @_ZN9NOMAD_4_312RandomPickup5resetEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  %5 = getelementptr inbounds %"class.NOMAD_4_3::RandomPickup", ptr %4, i32 0, i32 1
  %6 = load i64, ptr %5, align 8, !tbaa !9
  %7 = getelementptr inbounds %"class.NOMAD_4_3::RandomPickup", ptr %4, i32 0, i32 2
  store i64 %6, ptr %7, align 8, !tbaa !13
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  store i64 0, ptr %3, align 8, !tbaa !14
  br label %8

8:                                                ; preds = %20, %1
  %9 = load i64, ptr %3, align 8, !tbaa !14
  %10 = getelementptr inbounds %"class.NOMAD_4_3::RandomPickup", ptr %4, i32 0, i32 2
  %11 = load i64, ptr %10, align 8, !tbaa !13
  %12 = icmp ult i64 %9, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  br label %23

14:                                               ; preds = %8
  %15 = load i64, ptr %3, align 8, !tbaa !14
  %16 = getelementptr inbounds %"class.NOMAD_4_3::RandomPickup", ptr %4, i32 0, i32 3
  %17 = load ptr, ptr %16, align 8, !tbaa !15
  %18 = load i64, ptr %3, align 8, !tbaa !14
  %19 = getelementptr inbounds i64, ptr %17, i64 %18
  store i64 %15, ptr %19, align 8, !tbaa !14
  br label %20

20:                                               ; preds = %14
  %21 = load i64, ptr %3, align 8, !tbaa !14
  %22 = add i64 %21, 1
  store i64 %22, ptr %3, align 8, !tbaa !14
  br label %8, !llvm.loop !16

23:                                               ; preds = %13
  ret void
}

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 = { 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, !12, i64 8}
!10 = !{!"_ZTSN9NOMAD_4_312RandomPickupE", !11, i64 0, !12, i64 8, !12, i64 16, !6, i64 24}
!11 = !{!"_ZTSN9NOMAD_4_310UncopyableE"}
!12 = !{!"long", !7, i64 0}
!13 = !{!10, !12, i64 16}
!14 = !{!12, !12, i64 0}
!15 = !{!10, !6, i64 24}
!16 = distinct !{!16, !17}
!17 = !{!"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 nofree norecurse nosync nounwind memory(write, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local void @_ZN9NOMAD_4_312RandomPickup5resetEv(ptr nocapture noundef nonnull align 8 dereferenceable(32) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load i64, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 16
  store i64 %3, ptr %4, align 8, !tbaa !12
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 24
  %6 = load ptr, ptr %5, align 8, !tbaa !13
  br label %7

._crit_edge:                                      ; preds = %7, %1
  ret void

7:                                                ; preds = %.lr.ph, %7
  %.04 = phi i64 [ 0, %.lr.ph ], [ %9, %7 ]
  %8 = getelementptr inbounds i64, ptr %6, i64 %.04
  store i64 %.04, ptr %8, align 8, !tbaa !14
  %9 = add nuw i64 %.04, 1
  %10 = load i64, ptr %4, align 8, !tbaa !12
  %11 = icmp ult i64 %9, %10
  br i1 %11, label %7, label %._crit_edge, !llvm.loop !15
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(write, argmem: readwrite, 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, !8, i64 8}
!6 = !{!"_ZTSN9NOMAD_4_312RandomPickupE", !7, i64 0, !8, i64 8, !8, i64 16, !11, i64 24}
!7 = !{!"_ZTSN9NOMAD_4_310UncopyableE"}
!8 = !{!"long", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}
!11 = !{!"any pointer", !9, i64 0}
!12 = !{!6, !8, i64 16}
!13 = !{!6, !11, i64 24}
!14 = !{!8, !8, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


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