; LLVM IR from SSBMTonberry/pocketlzma :: ref_spec/lzma1900/CPP/Common/MyString.ll (ZN7UString6Add_LFEv)

; 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.UString = 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
declare dso_local void @_ZN7UString6Grow_1Ev(ptr noundef nonnull align 8 dereferenceable(16)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7UString6Add_LFEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8
  %6 = getelementptr inbounds %class.UString, ptr %5, i32 0, i32 2
  %7 = load i32, ptr %6, align 4, !tbaa !9
  %8 = getelementptr inbounds %class.UString, ptr %5, i32 0, i32 1
  %9 = load i32, ptr %8, align 8, !tbaa !12
  %10 = icmp eq i32 %7, %9
  br i1 %10, label %11, label %12

11:                                               ; preds = %1
  call void @_ZN7UString6Grow_1Ev(ptr noundef nonnull align 8 dereferenceable(16) %5)
  br label %12

12:                                               ; preds = %11, %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  %13 = getelementptr inbounds %class.UString, ptr %5, i32 0, i32 1
  %14 = load i32, ptr %13, align 8, !tbaa !12
  store i32 %14, ptr %3, align 4, !tbaa !13
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  %15 = getelementptr inbounds %class.UString, ptr %5, i32 0, i32 0
  %16 = load ptr, ptr %15, align 8, !tbaa !14
  store ptr %16, ptr %4, align 8, !tbaa !5
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = load i32, ptr %3, align 4, !tbaa !13
  %19 = add i32 %18, 1
  store i32 %19, ptr %3, align 4, !tbaa !13
  %20 = zext i32 %18 to i64
  %21 = getelementptr inbounds i32, ptr %17, i64 %20
  store i32 10, ptr %21, align 4, !tbaa !15
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = load i32, ptr %3, align 4, !tbaa !13
  %24 = zext i32 %23 to i64
  %25 = getelementptr inbounds i32, ptr %22, i64 %24
  store i32 0, ptr %25, align 4, !tbaa !15
  %26 = load i32, ptr %3, align 4, !tbaa !13
  %27 = getelementptr inbounds %class.UString, ptr %5, i32 0, i32 1
  store i32 %26, ptr %27, align 8, !tbaa !12
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret void
}

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, !11, i64 12}
!10 = !{!"_ZTS7UString", !6, i64 0, !11, i64 8, !11, i64 12}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 8}
!13 = !{!11, !11, i64 0}
!14 = !{!10, !6, i64 0}
!15 = !{!16, !16, i64 0}
!16 = !{!"wchar_t", !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"

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7UString6Grow_1Ev(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7UString6Add_LFEv(ptr noundef nonnull align 8 dereferenceable(16) %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 !11
  %6 = icmp eq i32 %3, %5
  br i1 %6, label %7, label %8

7:                                                ; preds = %1
  tail call void @_ZN7UString6Grow_1Ev(ptr noundef nonnull align 8 dereferenceable(16) %0)
  %.pre = load i32, ptr %4, align 8, !tbaa !11
  br label %8

8:                                                ; preds = %7, %1
  %9 = phi i32 [ %.pre, %7 ], [ %5, %1 ]
  %10 = load ptr, ptr %0, align 8, !tbaa !12
  %11 = add i32 %9, 1
  %12 = zext i32 %9 to i64
  %13 = getelementptr inbounds i32, ptr %10, i64 %12
  store i32 10, ptr %13, align 4, !tbaa !13
  %14 = zext i32 %11 to i64
  %15 = getelementptr inbounds i32, ptr %10, i64 %14
  store i32 0, ptr %15, align 4, !tbaa !13
  store i32 %11, ptr %4, align 8, !tbaa !11
  ret void
}

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 = !{!"_ZTS7UString", !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}
!12 = !{!6, !7, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"wchar_t", !8, i64 0}


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