; LLVM IR from kala13x/libxutils :: src/sys (sync)

; 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.XSyncRW = type { %union.pthread_rwlock_t, i8 }
%union.pthread_rwlock_t = type { %struct.__pthread_rwlock_arch_t }
%struct.__pthread_rwlock_arch_t = type { i32, i32, i32, i32, i32, i32, i32, i32, i8, [7 x i8], i64, i32 }

@stderr = external global ptr, align 8
@.str.1 = external hidden unnamed_addr constant [66 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [42 x i8], align 1
@__FUNCTION__.XRWSync_ReadLock = external hidden unnamed_addr constant [17 x i8], align 1

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #0

; Function Attrs: nounwind willreturn memory(none)
declare ptr @__errno_location() #1

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local void @XRWSync_ReadLock(ptr noundef %0) #3 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds %struct.XSyncRW, ptr %3, i32 0, i32 1
  %5 = load i8, ptr %4, align 8, !tbaa !9
  %6 = icmp ne i8 %5, 0
  br i1 %6, label %7, label %18

7:                                                ; preds = %1
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.XSyncRW, ptr %8, i32 0, i32 0
  %10 = call i32 @pthread_rwlock_rdlock(ptr noundef %9) #4
  %11 = icmp ne i32 %10, 0
  br i1 %11, label %12, label %17

12:                                               ; preds = %7
  %13 = load ptr, ptr @stderr, align 8, !tbaa !5
  %14 = call ptr @__errno_location() #5
  %15 = load i32, ptr %14, align 4, !tbaa !11
  %16 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %13, ptr noundef @.str.6, ptr noundef @.str.1, i32 noundef 133, ptr noundef @__FUNCTION__.XRWSync_ReadLock, i32 noundef %15) #4
  call void @exit(i32 noundef 1) #6
  unreachable

17:                                               ; preds = %7
  br label %18

18:                                               ; preds = %17, %1
  ret void
}

; Function Attrs: nounwind
declare i32 @pthread_rwlock_rdlock(ptr noundef) #0

attributes #0 = { 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 #1 = { nounwind willreturn memory(none) "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 = { noreturn 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 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 }
attributes #5 = { nounwind willreturn memory(none) }
attributes #6 = { noreturn 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, !7, i64 56}
!10 = !{!"XSyncRW", !7, i64 0, !7, i64 56}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, 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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str.1 = external hidden unnamed_addr constant [66 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [42 x i8], align 1
@__FUNCTION__.XRWSync_ReadLock = external hidden unnamed_addr constant [17 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
declare ptr @__errno_location() local_unnamed_addr #1

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local void @XRWSync_ReadLock(ptr noundef %0) local_unnamed_addr #3 {
  %2 = getelementptr inbounds i8, ptr %0, i64 56
  %3 = load i8, ptr %2, align 8, !tbaa !5
  %.not = icmp eq i8 %3, 0
  br i1 %.not, label %11, label %4

4:                                                ; preds = %1
  %5 = tail call i32 @pthread_rwlock_rdlock(ptr noundef nonnull %0) #5
  %.not2 = icmp eq i32 %5, 0
  br i1 %.not2, label %11, label %6

6:                                                ; preds = %4
  %7 = load ptr, ptr @stderr, align 8, !tbaa !9
  %8 = tail call ptr @__errno_location() #6
  %9 = load i32, ptr %8, align 4, !tbaa !11
  %10 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %7, ptr noundef nonnull @.str.6, ptr noundef nonnull @.str.1, i32 noundef 133, ptr noundef nonnull @__FUNCTION__.XRWSync_ReadLock, i32 noundef %9) #7
  tail call void @exit(i32 noundef 1) #8
  unreachable

11:                                               ; preds = %4, %1
  ret void
}

; Function Attrs: nounwind
declare i32 @pthread_rwlock_rdlock(ptr noundef) local_unnamed_addr #4

attributes #0 = { nofree 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 #1 = { mustprogress nofree nosync nounwind willreturn memory(none) "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 = { noreturn 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 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 "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 #5 = { nounwind }
attributes #6 = { nounwind willreturn memory(none) }
attributes #7 = { cold nounwind }
attributes #8 = { noreturn 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 56}
!6 = !{!"XSyncRW", !7, i64 0, !7, i64 56}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}


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