; LLVM IR from Skyness60/C-Garbage-Collector :: src (gc_check)

; 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.s_garbage_c = type { ptr, i64, i64, i8 }

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @is_ptr_in_trash(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  store i64 0, ptr %6, align 8, !tbaa !9
  br label %8

8:                                                ; preds = %24, %2
  %9 = load i64, ptr %6, align 8, !tbaa !9
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.s_garbage_c, ptr %10, i32 0, i32 2
  %12 = load i64, ptr %11, align 8, !tbaa !11
  %13 = icmp ult i64 %9, %12
  br i1 %13, label %14, label %27

14:                                               ; preds = %8
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.s_garbage_c, ptr %15, i32 0, i32 0
  %17 = load ptr, ptr %16, align 8, !tbaa !14
  %18 = load i64, ptr %6, align 8, !tbaa !9
  %19 = getelementptr inbounds ptr, ptr %17, i64 %18
  %20 = load ptr, ptr %19, align 8, !tbaa !5
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = icmp eq ptr %20, %21
  br i1 %22, label %23, label %24

23:                                               ; preds = %14
  store i1 true, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %28

24:                                               ; preds = %14
  %25 = load i64, ptr %6, align 8, !tbaa !9
  %26 = add i64 %25, 1
  store i64 %26, ptr %6, align 8, !tbaa !9
  br label %8, !llvm.loop !15

27:                                               ; preds = %8
  store i1 false, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %28

28:                                               ; preds = %27, %23
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %29 = load i1, ptr %3, align 1
  ret i1 %29
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 16}
!12 = !{!"s_garbage_c", !6, i64 0, !10, i64 8, !10, i64 16, !13, i64 24}
!13 = !{!"_Bool", !7, i64 0}
!14 = !{!12, !6, i64 0}
!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: nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local zeroext i1 @is_ptr_in_trash(ptr nocapture noundef readonly %0, ptr noundef readnone %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %.not = icmp eq i64 %4, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %5 = load ptr, ptr %0, align 8, !tbaa !12
  %6 = load ptr, ptr %5, align 8, !tbaa !13
  %7 = icmp eq ptr %6, %1
  br i1 %7, label %._crit_edge, label %.lr.ph11

.lr.ph11:                                         ; preds = %.lr.ph, %9
  %.0710 = phi i64 [ %8, %9 ], [ 0, %.lr.ph ]
  %8 = add nuw i64 %.0710, 1
  %exitcond.not = icmp eq i64 %8, %4
  br i1 %exitcond.not, label %._crit_edge.loopexit, label %9, !llvm.loop !14

9:                                                ; preds = %.lr.ph11
  %10 = getelementptr inbounds ptr, ptr %5, i64 %8
  %11 = load ptr, ptr %10, align 8, !tbaa !13
  %12 = icmp eq ptr %11, %1
  br i1 %12, label %._crit_edge.loopexit, label %.lr.ph11, !llvm.loop !14

._crit_edge.loopexit:                             ; preds = %9, %.lr.ph11
  %13 = icmp ult i64 %8, %4
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %.lr.ph, %2
  %.lcssa = phi i1 [ false, %2 ], [ true, %.lr.ph ], [ %13, %._crit_edge.loopexit ]
  ret i1 %.lcssa
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) 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 16}
!6 = !{!"s_garbage_c", !7, i64 0, !10, i64 8, !10, i64 16, !11, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!"_Bool", !8, i64 0}
!12 = !{!6, !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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