; LLVM IR from asllop/AppOS :: term (term_internal)

; 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"

%struct.TermDriverStruct = type { i32, i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }

@term_driver_ID_count = external hidden global i32, align 4
@term_drivers_list = external hidden global [2 x %struct.TermDriverStruct], align 16

; Function Attrs: nounwind uwtable
define dso_local i32 @term_register(ptr noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  %5 = load i32, ptr @term_driver_ID_count, align 4, !tbaa !9
  %6 = icmp slt i32 %5, 2
  br i1 %6, label %7, label %15

7:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %8 = load i32, ptr @term_driver_ID_count, align 4, !tbaa !9
  %9 = add nsw i32 %8, 1
  store i32 %9, ptr @term_driver_ID_count, align 4, !tbaa !9
  store i32 %8, ptr %4, align 4, !tbaa !9
  %10 = load i32, ptr %4, align 4, !tbaa !9
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds [2 x %struct.TermDriverStruct], ptr @term_drivers_list, i64 0, i64 %11
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %12, ptr align 8 %13, i64 80, i1 false), !tbaa.struct !11
  %14 = load i32, ptr %4, align 4, !tbaa !9
  store i32 %14, ptr %2, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %16

15:                                               ; preds = %1
  store i32 -504, ptr %2, align 4
  br label %16

16:                                               ; preds = %15, %7
  %17 = load i32, ptr %2, align 4
  ret i32 %17
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{i64 0, i64 4, !9, i64 4, i64 4, !9, i64 8, i64 8, !5, i64 16, i64 8, !5, i64 24, i64 8, !5, i64 32, i64 8, !5, i64 40, i64 8, !5, i64 48, i64 8, !5, i64 56, i64 8, !5, i64 64, i64 8, !5, i64 72, i64 8, !5}


; 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"

%struct.TermDriverStruct = type { i32, i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }

@term_driver_ID_count = external hidden local_unnamed_addr global i32, align 4
@term_drivers_list = external hidden local_unnamed_addr global [2 x %struct.TermDriverStruct], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, inaccessiblemem: none) uwtable
define dso_local range(i32 -2147483648, 2) i32 @term_register(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load i32, ptr @term_driver_ID_count, align 4, !tbaa !5
  %3 = icmp slt i32 %2, 2
  br i1 %3, label %4, label %8

4:                                                ; preds = %1
  %5 = add nsw i32 %2, 1
  store i32 %5, ptr @term_driver_ID_count, align 4, !tbaa !5
  %6 = sext i32 %2 to i64
  %7 = getelementptr inbounds [2 x %struct.TermDriverStruct], ptr @term_drivers_list, i64 0, i64 %6
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(80) %7, ptr noundef nonnull align 8 dereferenceable(80) %0, i64 80, i1 false), !tbaa.struct !9
  br label %8

8:                                                ; preds = %1, %4
  %.0 = phi i32 [ %2, %4 ], [ -504, %1 ]
  ret i32 %.0
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(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" }
attributes #1 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }

!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/C++ TBAA"}
!9 = !{i64 0, i64 4, !5, i64 4, i64 4, !5, i64 8, i64 8, !10, i64 16, i64 8, !10, i64 24, i64 8, !10, i64 32, i64 8, !10, i64 40, i64 8, !10, i64 48, i64 8, !10, i64 56, i64 8, !10, i64 64, i64 8, !10, i64 72, i64 8, !10}
!10 = !{!11, !11, i64 0}
!11 = !{!"any pointer", !7, i64 0}


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