; LLVM IR from mncoppola/rpef :: utilities_src/squashfs2.1/lzma/C/Common (Vector)

; 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.CBaseRecordVector = type { ptr, i32, i32, ptr, i64 }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN17CBaseRecordVector18ReserveOnePositionEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #0 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  %5 = getelementptr inbounds %class.CBaseRecordVector, ptr %4, i32 0, i32 2
  %6 = load i32, ptr %5, align 4, !tbaa !9
  %7 = getelementptr inbounds %class.CBaseRecordVector, ptr %4, i32 0, i32 1
  %8 = load i32, ptr %7, align 8, !tbaa !13
  %9 = icmp ne i32 %6, %8
  br i1 %9, label %10, label %11

10:                                               ; preds = %1
  br label %31

11:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  %12 = getelementptr inbounds %class.CBaseRecordVector, ptr %4, i32 0, i32 1
  %13 = load i32, ptr %12, align 8, !tbaa !13
  %14 = icmp sgt i32 %13, 64
  br i1 %14, label %15, label %19

15:                                               ; preds = %11
  %16 = getelementptr inbounds %class.CBaseRecordVector, ptr %4, i32 0, i32 1
  %17 = load i32, ptr %16, align 8, !tbaa !13
  %18 = sdiv i32 %17, 2
  store i32 %18, ptr %3, align 4, !tbaa !14
  br label %26

19:                                               ; preds = %11
  %20 = getelementptr inbounds %class.CBaseRecordVector, ptr %4, i32 0, i32 1
  %21 = load i32, ptr %20, align 8, !tbaa !13
  %22 = icmp sgt i32 %21, 8
  br i1 %22, label %23, label %24

23:                                               ; preds = %19
  store i32 8, ptr %3, align 4, !tbaa !14
  br label %25

24:                                               ; preds = %19
  store i32 4, ptr %3, align 4, !tbaa !14
  br label %25

25:                                               ; preds = %24, %23
  br label %26

26:                                               ; preds = %25, %15
  %27 = getelementptr inbounds %class.CBaseRecordVector, ptr %4, i32 0, i32 1
  %28 = load i32, ptr %27, align 8, !tbaa !13
  %29 = load i32, ptr %3, align 4, !tbaa !14
  %30 = add nsw i32 %28, %29
  call void @_ZN17CBaseRecordVector7ReserveEi(ptr noundef nonnull align 8 dereferenceable(32) %4, i32 noundef %30)
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  br label %31

31:                                               ; preds = %26, %10
  ret void
}

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN17CBaseRecordVector7ReserveEi(ptr noundef nonnull align 8 dereferenceable(32), i32 noundef) #0 align 2

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

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 willreturn memory(argmem: readwrite) }
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, !11, i64 12}
!10 = !{!"_ZTS17CBaseRecordVector", !11, i64 8, !11, i64 12, !6, i64 16, !12, i64 24}
!11 = !{!"int", !7, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!10, !11, i64 8}
!14 = !{!11, !11, 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"

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN17CBaseRecordVector18ReserveOnePositionEv(ptr noundef nonnull align 8 dereferenceable(32) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 12
  %3 = load i32, ptr %2, align 4, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load i32, ptr %4, align 8, !tbaa !12
  %.not = icmp eq i32 %3, %5
  br i1 %.not, label %6, label %11

6:                                                ; preds = %1
  %7 = icmp sgt i32 %3, 64
  %8 = lshr i32 %3, 1
  %9 = icmp sgt i32 %3, 8
  %. = select i1 %9, i32 8, i32 4
  %.0 = select i1 %7, i32 %8, i32 %.
  %10 = add nsw i32 %.0, %3
  tail call void @_ZN17CBaseRecordVector7ReserveEi(ptr noundef nonnull align 8 dereferenceable(32) %0, i32 noundef %10)
  br label %11

11:                                               ; preds = %1, %6
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN17CBaseRecordVector7ReserveEi(ptr noundef nonnull align 8 dereferenceable(32), i32 noundef) local_unnamed_addr #0 align 2

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" }

!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, !7, i64 12}
!6 = !{!"_ZTS17CBaseRecordVector", !7, i64 8, !7, i64 12, !10, i64 16, !11, i64 24}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"long", !8, i64 0}
!12 = !{!6, !7, i64 8}


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