; LLVM IR from nickmqb/muon :: bootstrap/mu.ll_CGenerator (symNestedTag__)

; 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.string__ = type { ptr, i32 }
%struct.tag_____Tag__ = type { ptr, ptr }
%struct.tag_____StringBuilder__ = 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: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #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: nounwind uwtable
declare dso_local { ptr, i32 } @CGenerator__symNs__(ptr noundef) #3

; Function Attrs: nounwind uwtable
define dso_local { ptr, i32 } @CGenerator__symNestedTag__(ptr %0, ptr %1) #3 {
  %3 = alloca %struct.string__, align 8
  %4 = alloca %struct.tag_____Tag__, align 8
  %5 = alloca %struct.tag_____StringBuilder__, align 8
  %6 = alloca %struct.tag_____StringBuilder__, align 8
  %7 = getelementptr inbounds { ptr, ptr }, ptr %4, i32 0, i32 0
  store ptr %0, ptr %7, align 8
  %8 = getelementptr inbounds { ptr, ptr }, ptr %4, i32 0, i32 1
  store ptr %1, ptr %8, align 8
  %9 = getelementptr inbounds %struct.tag_____Tag__, ptr %4, i32 0, i32 1
  %10 = load ptr, ptr %9, align 8, !tbaa !5
  %11 = icmp eq ptr %10, null
  br i1 %11, label %12, label %20

12:                                               ; preds = %2
  %13 = getelementptr inbounds %struct.tag_____Tag__, ptr %4, i32 0, i32 0
  %14 = load ptr, ptr %13, align 8, !tbaa !10
  %15 = call { ptr, i32 } @CGenerator__symNs__(ptr noundef %14)
  %16 = getelementptr inbounds { ptr, i32 }, ptr %3, i32 0, i32 0
  %17 = extractvalue { ptr, i32 } %15, 0
  store ptr %17, ptr %16, align 8
  %18 = getelementptr inbounds { ptr, i32 }, ptr %3, i32 0, i32 1
  %19 = extractvalue { ptr, i32 } %15, 1
  store i32 %19, ptr %18, align 8
  br label %30

20:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 16, ptr %5) #4
  call void @llvm.memset.p0.i64(ptr align 8 %5, i8 0, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 16, ptr %6) #4
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %6, ptr align 8 %5, i64 16, i1 false), !tbaa.struct !11
  %21 = getelementptr inbounds { ptr, ptr }, ptr %4, i32 0, i32 0
  %22 = load ptr, ptr %21, align 8
  %23 = getelementptr inbounds { ptr, ptr }, ptr %4, i32 0, i32 1
  %24 = load ptr, ptr %23, align 8
  call void @CGenerator__writeNestedTag__(ptr noundef %6, ptr %22, ptr %24)
  %25 = call { ptr, i32 } @StringBuilder__toString__(ptr noundef %6)
  %26 = getelementptr inbounds { ptr, i32 }, ptr %3, i32 0, i32 0
  %27 = extractvalue { ptr, i32 } %25, 0
  store ptr %27, ptr %26, align 8
  %28 = getelementptr inbounds { ptr, i32 }, ptr %3, i32 0, i32 1
  %29 = extractvalue { ptr, i32 } %25, 1
  store i32 %29, ptr %28, align 8
  call void @llvm.lifetime.end.p0(i64 16, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 16, ptr %5) #4
  br label %30

30:                                               ; preds = %20, %12
  %31 = load { ptr, i32 }, ptr %3, align 8
  ret { ptr, i32 } %31
}

; Function Attrs: nounwind uwtable
declare dso_local { ptr, i32 } @StringBuilder__toString__(ptr noundef) #3

; Function Attrs: nounwind uwtable
declare dso_local void @CGenerator__writeNestedTag__(ptr noundef, ptr, ptr) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { 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, !7, i64 8}
!6 = !{!"tag_____Tag__", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 0}
!11 = !{i64 0, i64 8, !12, i64 8, i64 4, !13, i64 12, i64 4, !13}
!12 = !{!7, !7, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"int", !8, 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"

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

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

; Function Attrs: nounwind uwtable
declare dso_local { ptr, i32 } @CGenerator__symNs__(ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local { ptr, i32 } @CGenerator__symNestedTag__(ptr %0, ptr %1) local_unnamed_addr #2 {
  %3 = alloca %struct.tag_____StringBuilder__, align 8
  %4 = icmp eq ptr %1, null
  br i1 %4, label %5, label %7

5:                                                ; preds = %2
  %6 = tail call { ptr, i32 } @CGenerator__symNs__(ptr noundef %0)
  br label %9

7:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %3) #3
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %3, i8 0, i64 16, i1 false)
  call void @CGenerator__writeNestedTag__(ptr noundef nonnull %3, ptr %0, ptr nonnull %1)
  %8 = call { ptr, i32 } @StringBuilder__toString__(ptr noundef nonnull %3)
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %3) #3
  br label %9

9:                                                ; preds = %7, %5
  %.pn = phi { ptr, i32 } [ %6, %5 ], [ %8, %7 ]
  ret { ptr, i32 } %.pn
}

; Function Attrs: nounwind uwtable
declare dso_local { ptr, i32 } @StringBuilder__toString__(ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local void @CGenerator__writeNestedTag__(ptr noundef, ptr, ptr) local_unnamed_addr #2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #2 = { 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 #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)"}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,SROAPass,TailCallElimPass