; LLVM IR from jspd-group/pegit :: src (cache)

; 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.cache_index_entry_list = type { i64, i64, %struct.strbuf, %struct.stat, i32, [20 x i16], ptr }
%struct.strbuf = type { i64, i64, ptr }
%struct.stat = type { i64, i64, i64, i32, i32, i32, i32, i64, i64, i64, i64, %struct.timespec, %struct.timespec, %struct.timespec, [3 x i64] }
%struct.timespec = type { i64, i64 }

; 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 uwtable
define dso_local void @clear_list_index(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  store ptr %5, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store ptr null, ptr %4, align 8, !tbaa !5
  br label %6

6:                                                ; preds = %16, %1
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = icmp ne ptr %7, null
  br i1 %8, label %10, label %9

9:                                                ; preds = %6
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %21

10:                                               ; preds = %6
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = icmp ne ptr %11, null
  br i1 %12, label %13, label %15

13:                                               ; preds = %10
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  call void @free(ptr noundef %14) #3
  br label %15

15:                                               ; preds = %13, %10
  br label %16

16:                                               ; preds = %15
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %17, ptr %4, align 8, !tbaa !5
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.cache_index_entry_list, ptr %18, i32 0, i32 6
  %20 = load ptr, ptr %19, align 8, !tbaa !9
  store ptr %20, ptr %3, align 8, !tbaa !5
  br label %6, !llvm.loop !16

21:                                               ; preds = %9
  ret void
}

; Function Attrs: nounwind
declare void @free(ptr noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 "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, !6, i64 232}
!10 = !{!"cache_index_entry_list", !11, i64 0, !11, i64 8, !12, i64 16, !13, i64 40, !14, i64 184, !7, i64 188, !6, i64 232}
!11 = !{!"long", !7, i64 0}
!12 = !{!"strbuf", !11, i64 0, !11, i64 8, !6, i64 16}
!13 = !{!"stat", !11, i64 0, !11, i64 8, !11, i64 16, !14, i64 24, !14, i64 28, !14, i64 32, !14, i64 36, !11, i64 40, !11, i64 48, !11, i64 56, !11, i64 64, !15, i64 72, !15, i64 88, !15, i64 104, !7, i64 120}
!14 = !{!"int", !7, i64 0}
!15 = !{!"timespec", !11, i64 0, !11, i64 8}
!16 = distinct !{!16, !17}
!17 = !{!"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: nounwind uwtable
define dso_local void @clear_list_index(ptr noundef %0) local_unnamed_addr #0 {
  %.not8 = icmp eq ptr %0, null
  br i1 %.not8, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %3, %1
  ret void

.lr.ph:                                           ; preds = %1, %3
  %.010 = phi ptr [ %.069, %3 ], [ null, %1 ]
  %.069 = phi ptr [ %5, %3 ], [ %0, %1 ]
  %.not7 = icmp eq ptr %.010, null
  br i1 %.not7, label %3, label %2

2:                                                ; preds = %.lr.ph
  tail call void @free(ptr noundef nonnull %.010) #2
  br label %3

3:                                                ; preds = %.lr.ph, %2
  %4 = getelementptr inbounds i8, ptr %.069, i64 232
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %.not = icmp eq ptr %5, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !15
}

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #1

attributes #0 = { 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 #1 = { 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 #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, !11, i64 232}
!6 = !{!"cache_index_entry_list", !7, i64 0, !7, i64 8, !10, i64 16, !12, i64 40, !13, i64 184, !8, i64 188, !11, i64 232}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"strbuf", !7, i64 0, !7, i64 8, !11, i64 16}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!"stat", !7, i64 0, !7, i64 8, !7, i64 16, !13, i64 24, !13, i64 28, !13, i64 32, !13, i64 36, !7, i64 40, !7, i64 48, !7, i64 56, !7, i64 64, !14, i64 72, !14, i64 88, !14, i64 104, !8, i64 120}
!13 = !{!"int", !8, i64 0}
!14 = !{!"timespec", !7, i64 0, !7, i64 8}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


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