; LLVM IR from vczh/herodb :: Kernel/Source/Vlpp.ll (ZN2vl9Semaphore4WaitEv)

; 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"

%"class.vl::Semaphore" = type { %"class.vl::WaitableObject", ptr }
%"class.vl::WaitableObject" = type { %"class.vl::Object" }
%"class.vl::Object" = type { ptr }
%"struct.vl::threading_internal::SemaphoreData" = type { %union.sem_t, ptr }
%union.sem_t = type { i64, [24 x i8] }

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_ZN2vl9Semaphore4WaitEv(ptr noundef nonnull align 8 dereferenceable(16) %0) unnamed_addr #0 align 2 {
  %2 = alloca i1, align 1
  %3 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  %4 = load ptr, ptr %3, align 8
  %5 = getelementptr inbounds %"class.vl::Semaphore", ptr %4, i32 0, i32 1
  %6 = load ptr, ptr %5, align 8, !tbaa !9
  %7 = getelementptr inbounds %"struct.vl::threading_internal::SemaphoreData", ptr %6, i32 0, i32 1
  %8 = load ptr, ptr %7, align 8, !tbaa !13
  %9 = icmp ne ptr %8, null
  br i1 %9, label %10, label %17

10:                                               ; preds = %1
  %11 = getelementptr inbounds %"class.vl::Semaphore", ptr %4, i32 0, i32 1
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  %13 = getelementptr inbounds %"struct.vl::threading_internal::SemaphoreData", ptr %12, i32 0, i32 1
  %14 = load ptr, ptr %13, align 8, !tbaa !13
  %15 = call i32 @sem_wait(ptr noundef %14)
  %16 = icmp eq i32 %15, 0
  store i1 %16, ptr %2, align 1
  br label %23

17:                                               ; preds = %1
  %18 = getelementptr inbounds %"class.vl::Semaphore", ptr %4, i32 0, i32 1
  %19 = load ptr, ptr %18, align 8, !tbaa !9
  %20 = getelementptr inbounds %"struct.vl::threading_internal::SemaphoreData", ptr %19, i32 0, i32 0
  %21 = call i32 @sem_wait(ptr noundef %20)
  %22 = icmp eq i32 %21, 0
  store i1 %22, ptr %2, align 1
  br label %23

23:                                               ; preds = %17, %10
  %24 = load i1, ptr %2, align 1
  ret i1 %24
}

declare i32 @sem_wait(ptr noundef) #1

attributes #0 = { mustprogress 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 = { "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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTSN2vl9SemaphoreE", !11, i64 0, !6, i64 8}
!11 = !{!"_ZTSN2vl14WaitableObjectE", !12, i64 0}
!12 = !{!"_ZTSN2vl6ObjectE"}
!13 = !{!14, !6, i64 32}
!14 = !{!"_ZTSN2vl18threading_internal13SemaphoreDataE", !7, i64 0, !6, i64 32}


; 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 uwtable
define dso_local noundef zeroext i1 @_ZN2vl9Semaphore4WaitEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %0) unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %3, i64 32
  %5 = load ptr, ptr %4, align 8, !tbaa !12
  %.not = icmp eq ptr %5, null
  %. = select i1 %.not, ptr %3, ptr %5
  %6 = tail call i32 @sem_wait(ptr noundef nonnull %.)
  %.0 = icmp eq i32 %6, 0
  ret i1 %.0
}

declare i32 @sem_wait(ptr noundef) local_unnamed_addr #1

attributes #0 = { mustprogress 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 = { "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, !9, i64 8}
!6 = !{!"_ZTSN2vl9SemaphoreE", !7, i64 0, !9, i64 8}
!7 = !{!"_ZTSN2vl14WaitableObjectE", !8, i64 0}
!8 = !{!"_ZTSN2vl6ObjectE"}
!9 = !{!"any pointer", !10, i64 0}
!10 = !{!"omnipotent char", !11, i64 0}
!11 = !{!"Simple C++ TBAA"}
!12 = !{!13, !9, i64 32}
!13 = !{!"_ZTSN2vl18threading_internal13SemaphoreDataE", !10, i64 0, !9, i64 32}


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