; LLVM IR from ryanlayer/giggle :: src (metadata_index)

; 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.metadata_rows = type { i64, ptr }

; 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: nounwind
declare void @free(ptr noundef) #1

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

; Function Attrs: nounwind uwtable
define dso_local void @metadata_rows_destroy(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %4

4:                                                ; preds = %19, %1
  %5 = load i32, ptr %3, align 4, !tbaa !9
  %6 = sext i32 %5 to i64
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.metadata_rows, ptr %7, i32 0, i32 0
  %9 = load i64, ptr %8, align 8, !tbaa !11
  %10 = icmp ult i64 %6, %9
  br i1 %10, label %11, label %22

11:                                               ; preds = %4
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.metadata_rows, ptr %12, i32 0, i32 1
  %14 = load ptr, ptr %13, align 8, !tbaa !14
  %15 = load i32, ptr %3, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds ptr, ptr %14, i64 %16
  %18 = load ptr, ptr %17, align 8, !tbaa !5
  call void @metadata_row_destroy(ptr noundef %18)
  br label %19

19:                                               ; preds = %11
  %20 = load i32, ptr %3, align 4, !tbaa !9
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %3, align 4, !tbaa !9
  br label %4, !llvm.loop !15

22:                                               ; preds = %4
  %23 = load ptr, ptr %2, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.metadata_rows, ptr %23, i32 0, i32 1
  %25 = load ptr, ptr %24, align 8, !tbaa !14
  call void @free(ptr noundef %25) #3
  %26 = load ptr, ptr %2, align 8, !tbaa !5
  call void @free(ptr noundef %26) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind "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 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)"}
!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 = !{!12, !13, i64 0}
!12 = !{!"metadata_rows", !13, i64 0, !6, i64 8}
!13 = !{!"long", !7, i64 0}
!14 = !{!12, !6, i64 8}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


; 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 nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local void @metadata_row_destroy(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @metadata_rows_destroy(ptr nocapture noundef %0) local_unnamed_addr #1 {
  %2 = load i64, ptr %0, align 8, !tbaa !5
  %.not = icmp eq i64 %2, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  br label %4

4:                                                ; preds = %.lr.ph, %4
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %4 ]
  %5 = load ptr, ptr %3, align 8, !tbaa !11
  %6 = getelementptr inbounds ptr, ptr %5, i64 %indvars.iv
  %7 = load ptr, ptr %6, align 8, !tbaa !12
  tail call void @metadata_row_destroy(ptr noundef %7)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %8 = load i64, ptr %0, align 8, !tbaa !5
  %9 = icmp ugt i64 %8, %indvars.iv.next
  br i1 %9, label %4, label %._crit_edge, !llvm.loop !13

._crit_edge:                                      ; preds = %4, %1
  %10 = getelementptr inbounds i8, ptr %0, i64 8
  %11 = load ptr, ptr %10, align 8, !tbaa !11
  tail call void @free(ptr noundef %11) #2
  tail call void @free(ptr noundef nonnull %0) #2
  ret void
}

attributes #0 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { 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 #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, !7, i64 0}
!6 = !{!"metadata_rows", !7, i64 0, !10, i64 8}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!10, !10, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass