; LLVM IR from openxrlab/xrsfm :: src/colmap/ransac/random.ll (ZN6colmap11SetPRNGSeedEj)

; 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.std::chrono::duration" = type { i64 }
%"class.std::chrono::time_point" = type { %"class.std::chrono::duration" }

@_ZN6colmap4PRNGE = external dso_local thread_local global ptr, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6colmap11SetPRNGSeedEj(i32 noundef %0) #0 personality ptr @__gxx_personality_v0 {
  %2 = alloca i32, align 4
  %3 = alloca %"class.std::chrono::duration", align 8
  %4 = alloca %"class.std::chrono::time_point", align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  %7 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_ZN6colmap4PRNGE)
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = icmp ne ptr %8, null
  br i1 %9, label %10, label %16

10:                                               ; preds = %1
  %11 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_ZN6colmap4PRNGE)
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  %13 = icmp eq ptr %12, null
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  call void @_ZdlPvm(ptr noundef %12, i64 noundef 5000) #7
  br label %15

15:                                               ; preds = %14, %10
  br label %16

16:                                               ; preds = %15, %1
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = icmp eq i32 %17, -1
  br i1 %18, label %19, label %27

19:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #8
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #8
  %20 = call i64 @_ZNSt6chrono3_V212system_clock3nowEv() #8
  %21 = getelementptr inbounds %"class.std::chrono::time_point", ptr %4, i32 0, i32 0
  %22 = getelementptr inbounds %"class.std::chrono::duration", ptr %21, i32 0, i32 0
  store i64 %20, ptr %22, align 8
  %23 = call i64 @_ZNKSt6chrono10time_pointINS_3_V212system_clockENS_8durationIlSt5ratioILl1ELl1000000000EEEEE16time_since_epochEv(ptr noundef nonnull align 8 dereferenceable(8) %4)
  %24 = getelementptr inbounds %"class.std::chrono::duration", ptr %3, i32 0, i32 0
  store i64 %23, ptr %24, align 8
  %25 = call noundef i64 @_ZNKSt6chrono8durationIlSt5ratioILl1ELl1000000000EEE5countEv(ptr noundef nonnull align 8 dereferenceable(8) %3)
  %26 = trunc i64 %25 to i32
  store i32 %26, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #8
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #8
  br label %27

27:                                               ; preds = %19, %16
  store i32 0, ptr %2, align 4, !tbaa !5
  %28 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 5000) #9
  %29 = load i32, ptr %2, align 4, !tbaa !5
  %30 = zext i32 %29 to i64
  invoke void @_ZNSt23mersenne_twister_engineImLm32ELm624ELm397ELm31ELm2567483615ELm11ELm4294967295ELm7ELm2636928640ELm15ELm4022730752ELm18ELm1812433253EEC2Em(ptr noundef nonnull align 8 dereferenceable(5000) %28, i64 noundef %30)
          to label %31 unwind label %34

31:                                               ; preds = %27
  %32 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_ZN6colmap4PRNGE)
  store ptr %28, ptr %32, align 8, !tbaa !9
  %33 = load i32, ptr %2, align 4, !tbaa !5
  call void @srand(i32 noundef %33) #8
  ret void

34:                                               ; preds = %27
  %35 = landingpad { ptr, i32 }
          cleanup
  %36 = extractvalue { ptr, i32 } %35, 0
  store ptr %36, ptr %5, align 8
  %37 = extractvalue { ptr, i32 } %35, 1
  store i32 %37, ptr %6, align 4
  call void @_ZdlPvm(ptr noundef %28, i64 noundef 5000) #7
  br label %38

38:                                               ; preds = %34
  %39 = load ptr, ptr %5, align 8
  %40 = load i32, ptr %6, align 4
  %41 = insertvalue { ptr, i32 } poison, ptr %39, 0
  %42 = insertvalue { ptr, i32 } %41, i32 %40, 1
  resume { ptr, i32 } %42
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare nonnull ptr @llvm.threadlocal.address.p0(ptr nonnull) #1

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nounwind
declare i64 @_ZNSt6chrono3_V212system_clock3nowEv() #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local i64 @_ZNKSt6chrono10time_pointINS_3_V212system_clockENS_8durationIlSt5ratioILl1ELl1000000000EEEEE16time_since_epochEv(ptr noundef nonnull align 8 dereferenceable(8)) #5 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6chrono8durationIlSt5ratioILl1ELl1000000000EEE5countEv(ptr noundef nonnull align 8 dereferenceable(8)) #5 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) #6

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt23mersenne_twister_engineImLm32ELm624ELm397ELm31ELm2567483615ELm11ELm4294967295ELm7ELm2636928640ELm15ELm4022730752ELm18ELm1812433253EEC2Em(ptr noundef nonnull align 8 dereferenceable(5000), i64 noundef) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nounwind
declare void @srand(i32 noundef) #4

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" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { nobuiltin nounwind "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { nounwind "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 #5 = { 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 #6 = { nobuiltin allocsize(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 #7 = { builtin nounwind }
attributes #8 = { nounwind }
attributes #9 = { builtin allocsize(0) }

!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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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"

%"class.std::chrono::duration" = type { i64 }
%"class.std::chrono::time_point" = type { %"class.std::chrono::duration" }

@_ZN6colmap4PRNGE = external dso_local thread_local local_unnamed_addr global ptr, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6colmap11SetPRNGSeedEj(i32 noundef %0) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %2 = alloca %"class.std::chrono::duration", align 8
  %3 = alloca %"class.std::chrono::time_point", align 8
  %4 = tail call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_ZN6colmap4PRNGE)
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %.not = icmp eq ptr %5, null
  br i1 %.not, label %7, label %6

6:                                                ; preds = %1
  tail call void @_ZdlPvm(ptr noundef nonnull %5, i64 noundef 5000) #7
  br label %7

7:                                                ; preds = %6, %1
  %8 = icmp eq i32 %0, -1
  br i1 %8, label %9, label %13

9:                                                ; preds = %7
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #8
  %10 = tail call i64 @_ZNSt6chrono3_V212system_clock3nowEv() #8
  store i64 %10, ptr %3, align 8
  %11 = call i64 @_ZNKSt6chrono10time_pointINS_3_V212system_clockENS_8durationIlSt5ratioILl1ELl1000000000EEEEE16time_since_epochEv(ptr noundef nonnull align 8 dereferenceable(8) %3)
  store i64 %11, ptr %2, align 8
  %12 = call noundef i64 @_ZNKSt6chrono8durationIlSt5ratioILl1ELl1000000000EEE5countEv(ptr noundef nonnull align 8 dereferenceable(8) %2)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #8
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #8
  br label %13

13:                                               ; preds = %9, %7
  %14 = call noalias noundef nonnull dereferenceable(5000) ptr @_Znwm(i64 noundef 5000) #9
  invoke void @_ZNSt23mersenne_twister_engineImLm32ELm624ELm397ELm31ELm2567483615ELm11ELm4294967295ELm7ELm2636928640ELm15ELm4022730752ELm18ELm1812433253EEC2Em(ptr noundef nonnull align 8 dereferenceable(5000) %14, i64 noundef 0)
          to label %15 unwind label %16

15:                                               ; preds = %13
  store ptr %14, ptr %4, align 8, !tbaa !5
  call void @srand(i32 noundef 0) #8
  ret void

16:                                               ; preds = %13
  %17 = landingpad { ptr, i32 }
          cleanup
  call void @_ZdlPvm(ptr noundef nonnull %14, i64 noundef 5000) #7
  resume { ptr, i32 } %17
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare nonnull ptr @llvm.threadlocal.address.p0(ptr nonnull) #1

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nounwind
declare i64 @_ZNSt6chrono3_V212system_clock3nowEv() local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local i64 @_ZNKSt6chrono10time_pointINS_3_V212system_clockENS_8durationIlSt5ratioILl1ELl1000000000EEEEE16time_since_epochEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #5 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6chrono8durationIlSt5ratioILl1ELl1000000000EEE5countEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #5 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #6

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt23mersenne_twister_engineImLm32ELm624ELm397ELm31ELm2567483615ELm11ELm4294967295ELm7ELm2636928640ELm15ELm4022730752ELm18ELm1812433253EEC2Em(ptr noundef nonnull align 8 dereferenceable(5000), i64 noundef) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nounwind
declare void @srand(i32 noundef) local_unnamed_addr #4

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" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { nobuiltin nounwind "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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { nounwind "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 #5 = { 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 #6 = { nobuiltin allocsize(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 #7 = { builtin nounwind }
attributes #8 = { nounwind }
attributes #9 = { builtin allocsize(0) }

!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"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass