; LLVM IR from ohler55/agoo :: ext/agoo (http)

; 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 = type { [1024 x ptr] }
%struct._slot = type { ptr, ptr, i64, i32 }

@key_cache = external dso_local global %struct._cache, align 8

; 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 @agoo_http_cleanup() #1 {
  %1 = alloca ptr, align 8
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #3
  store ptr @key_cache, ptr %1, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 1024, ptr %4, align 4, !tbaa !9
  br label %5

5:                                                ; preds = %23, %0
  %6 = load i32, ptr %4, align 4, !tbaa !9
  %7 = icmp slt i32 0, %6
  br i1 %7, label %8, label %28

8:                                                ; preds = %5
  %9 = load ptr, ptr %1, align 8, !tbaa !5
  %10 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %10, ptr %2, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %19, %8
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = icmp ne ptr null, %12
  br i1 %13, label %14, label %21

14:                                               ; preds = %11
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct._slot, ptr %15, i32 0, i32 0
  %17 = load ptr, ptr %16, align 8, !tbaa !11
  store ptr %17, ptr %3, align 8, !tbaa !5
  %18 = load ptr, ptr %2, align 8, !tbaa !5
  call void @free(ptr noundef %18) #3
  br label %19

19:                                               ; preds = %14
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %20, ptr %2, align 8, !tbaa !5
  br label %11, !llvm.loop !14

21:                                               ; preds = %11
  %22 = load ptr, ptr %1, align 8, !tbaa !5
  store ptr null, ptr %22, align 8, !tbaa !5
  br label %23

23:                                               ; preds = %21
  %24 = load i32, ptr %4, align 4, !tbaa !9
  %25 = add nsw i32 %24, -1
  store i32 %25, ptr %4, align 4, !tbaa !9
  %26 = load ptr, ptr %1, align 8, !tbaa !5
  %27 = getelementptr inbounds ptr, ptr %26, i32 1
  store ptr %27, ptr %1, align 8, !tbaa !5
  br label %5, !llvm.loop !16

28:                                               ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #3
  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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"_slot", !6, i64 0, !6, i64 8, !13, i64 16, !10, i64 24}
!13 = !{!"long", !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}
!16 = distinct !{!16, !15}


; 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._cache = type { [1024 x ptr] }

@key_cache = external dso_local local_unnamed_addr global %struct._cache, align 8

; Function Attrs: nounwind uwtable
define dso_local void @agoo_http_cleanup() local_unnamed_addr #0 {
  br label %1

1:                                                ; preds = %0, %._crit_edge
  %.013 = phi i32 [ 1024, %0 ], [ %4, %._crit_edge ]
  %.0812 = phi ptr [ @key_cache, %0 ], [ %5, %._crit_edge ]
  %2 = load ptr, ptr %.0812, align 8, !tbaa !5
  %.not10 = icmp eq ptr %2, null
  br i1 %.not10, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %.lr.ph
  %.0911 = phi ptr [ %3, %.lr.ph ], [ %2, %1 ]
  %3 = load ptr, ptr %.0911, align 8, !tbaa !9
  tail call void @free(ptr noundef nonnull %.0911) #2
  %.not = icmp eq ptr %3, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph, %1
  store ptr null, ptr %.0812, align 8, !tbaa !5
  %4 = add nsw i32 %.013, -1
  %5 = getelementptr inbounds i8, ptr %.0812, i64 8
  %6 = icmp ugt i32 %.013, 1
  br i1 %6, label %1, label %7, !llvm.loop !15

7:                                                ; preds = %._crit_edge
  ret void
}

; 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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"_slot", !6, i64 0, !6, i64 8, !11, i64 16, !12, i64 24}
!11 = !{!"long", !7, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


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