; LLVM IR from SSBMTonberry/pocketlzma :: ref_spec/lzma1900/CPP/Common/MyString.ll (ZN7AString4GrowEj)

; 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.AString = type { ptr, i32, i32 }

; 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 uwtable
define dso_local void @_ZN7AString4GrowEj(ptr noundef nonnull align 8 dereferenceable(16) %0, i32 noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %8 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %9 = getelementptr inbounds %class.AString, ptr %8, i32 0, i32 2
  %10 = load i32, ptr %9, align 4, !tbaa !11
  %11 = getelementptr inbounds %class.AString, ptr %8, i32 0, i32 1
  %12 = load i32, ptr %11, align 8, !tbaa !13
  %13 = sub i32 %10, %12
  store i32 %13, ptr %5, align 4, !tbaa !9
  %14 = load i32, ptr %4, align 4, !tbaa !9
  %15 = load i32, ptr %5, align 4, !tbaa !9
  %16 = icmp ule i32 %14, %15
  br i1 %16, label %17, label %18

17:                                               ; preds = %2
  store i32 1, ptr %6, align 4
  br label %33

18:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %19 = getelementptr inbounds %class.AString, ptr %8, i32 0, i32 1
  %20 = load i32, ptr %19, align 8, !tbaa !13
  %21 = load i32, ptr %4, align 4, !tbaa !9
  %22 = add i32 %20, %21
  store i32 %22, ptr %7, align 4, !tbaa !9
  %23 = load i32, ptr %7, align 4, !tbaa !9
  %24 = udiv i32 %23, 2
  %25 = load i32, ptr %7, align 4, !tbaa !9
  %26 = add i32 %25, %24
  store i32 %26, ptr %7, align 4, !tbaa !9
  %27 = load i32, ptr %7, align 4, !tbaa !9
  %28 = add i32 %27, 16
  store i32 %28, ptr %7, align 4, !tbaa !9
  %29 = load i32, ptr %7, align 4, !tbaa !9
  %30 = and i32 %29, -16
  store i32 %30, ptr %7, align 4, !tbaa !9
  %31 = load i32, ptr %7, align 4, !tbaa !9
  %32 = sub i32 %31, 1
  call void @_ZN7AString7ReAllocEj(ptr noundef nonnull align 8 dereferenceable(16) %8, i32 noundef %32)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  store i32 0, ptr %6, align 4
  br label %33

33:                                               ; preds = %18, %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  %34 = load i32, ptr %6, align 4
  switch i32 %34, label %36 [
    i32 0, label %35
    i32 1, label %35
  ]

35:                                               ; preds = %33, %33
  ret void

36:                                               ; preds = %33
  unreachable
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7AString7ReAllocEj(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) #1 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 12}
!12 = !{!"_ZTS7AString", !6, i64 0, !10, i64 8, !10, i64 12}
!13 = !{!12, !10, i64 8}


; 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 @_ZN7AString4GrowEj(ptr noundef nonnull align 8 dereferenceable(16) %0, i32 noundef %1) local_unnamed_addr #0 align 2 {
  %3 = getelementptr inbounds i8, ptr %0, i64 12
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  %6 = load i32, ptr %5, align 8, !tbaa !11
  %7 = sub i32 %4, %6
  %.not = icmp ult i32 %7, %1
  br i1 %.not, label %8, label %13

8:                                                ; preds = %2
  %9 = add i32 %6, %1
  %10 = lshr i32 %9, 1
  %11 = add i32 %10, %9
  %12 = or i32 %11, 15
  tail call void @_ZN7AString7ReAllocEj(ptr noundef nonnull align 8 dereferenceable(16) %0, i32 noundef %12)
  br label %13

13:                                               ; preds = %2, %8
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7AString7ReAllocEj(ptr noundef nonnull align 8 dereferenceable(16), 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, !10, i64 12}
!6 = !{!"_ZTS7AString", !7, i64 0, !10, i64 8, !10, i64 12}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !10, i64 8}


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