; LLVM IR from eProsima/Fast-DDS :: test/realtime/mutex_testing_tool (TMutex)

; 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.std::array" = type { [30 x %"struct.eprosima::fastdds::tmutex_record"] }
%"struct.eprosima::fastdds::tmutex_record" = type { i32, ptr, i32 }

@_ZN8eprosima7fastdds16g_tmutex_recordsE = external dso_local global %"struct.std::array", align 8
@_ZN8eprosima7fastdds20g_tmutex_records_endE = external dso_local global i32, align 4

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN8eprosima7fastdds18tmutex_find_recordEP15pthread_mutex_t(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 -1, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %22, %1
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = load i32, ptr @_ZN8eprosima7fastdds20g_tmutex_records_endE, align 4, !tbaa !9
  %9 = icmp sle i32 %7, %8
  br i1 %9, label %11, label %10

10:                                               ; preds = %6
  store i32 2, ptr %5, align 4
  br label %25

11:                                               ; preds = %6
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = load i32, ptr %4, align 4, !tbaa !9
  %14 = sext i32 %13 to i64
  %15 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt5arrayIN8eprosima7fastdds13tmutex_recordELm30EEixEm(ptr noundef nonnull align 8 dereferenceable(720) @_ZN8eprosima7fastdds16g_tmutex_recordsE, i64 noundef %14) #2
  %16 = getelementptr inbounds %"struct.eprosima::fastdds::tmutex_record", ptr %15, i32 0, i32 1
  %17 = load ptr, ptr %16, align 8, !tbaa !11
  %18 = icmp eq ptr %12, %17
  br i1 %18, label %19, label %21

19:                                               ; preds = %11
  %20 = load i32, ptr %4, align 4, !tbaa !9
  store i32 %20, ptr %3, align 4, !tbaa !9
  store i32 2, ptr %5, align 4
  br label %25

21:                                               ; preds = %11
  br label %22

22:                                               ; preds = %21
  %23 = load i32, ptr %4, align 4, !tbaa !9
  %24 = add nsw i32 %23, 1
  store i32 %24, ptr %4, align 4, !tbaa !9
  br label %6, !llvm.loop !14

25:                                               ; preds = %19, %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  br label %26

26:                                               ; preds = %25
  %27 = load i32, ptr %3, align 4, !tbaa !9
  store i32 1, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i32 %27
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt5arrayIN8eprosima7fastdds13tmutex_recordELm30EEixEm(ptr noundef nonnull align 8 dereferenceable(720), i64 noundef) #0 align 2

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

attributes #0 = { mustprogress 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 8}
!12 = !{!"_ZTSN8eprosima7fastdds13tmutex_recordE", !13, i64 0, !6, i64 8, !10, i64 16}
!13 = !{!"_ZTSN8eprosima7fastdds8LockTypeE", !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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"

%"struct.std::array" = type { [30 x %"struct.eprosima::fastdds::tmutex_record"] }
%"struct.eprosima::fastdds::tmutex_record" = type { i32, ptr, i32 }

@_ZN8eprosima7fastdds16g_tmutex_recordsE = external dso_local global %"struct.std::array", align 8
@_ZN8eprosima7fastdds20g_tmutex_records_endE = external dso_local local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN8eprosima7fastdds18tmutex_find_recordEP15pthread_mutex_t(ptr noundef readnone %0) local_unnamed_addr #0 {
  %2 = load i32, ptr @_ZN8eprosima7fastdds20g_tmutex_records_endE, align 4, !tbaa !5
  %.not6 = icmp slt i32 %2, 0
  br i1 %.not6, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %7
  %indvars.iv = phi i64 [ %indvars.iv.next, %7 ], [ 0, %1 ]
  %3 = tail call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt5arrayIN8eprosima7fastdds13tmutex_recordELm30EEixEm(ptr noundef nonnull align 8 dereferenceable(720) @_ZN8eprosima7fastdds16g_tmutex_recordsE, i64 noundef %indvars.iv) #1
  %4 = getelementptr inbounds i8, ptr %3, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !9
  %6 = icmp eq ptr %5, %0
  br i1 %6, label %._crit_edge.loopexit.split.loop.exit, label %7

7:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %8 = load i32, ptr @_ZN8eprosima7fastdds20g_tmutex_records_endE, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  %.not.not = icmp slt i64 %indvars.iv, %9
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !13

._crit_edge.loopexit.split.loop.exit:             ; preds = %.lr.ph
  %10 = trunc nuw nsw i64 %indvars.iv to i32
  br label %._crit_edge

._crit_edge:                                      ; preds = %7, %._crit_edge.loopexit.split.loop.exit, %1
  %.05 = phi i32 [ -1, %1 ], [ %10, %._crit_edge.loopexit.split.loop.exit ], [ -1, %7 ]
  ret i32 %.05
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt5arrayIN8eprosima7fastdds13tmutex_recordELm30EEixEm(ptr noundef nonnull align 8 dereferenceable(720), i64 noundef) local_unnamed_addr #0 align 2

attributes #0 = { mustprogress 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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !12, i64 8}
!10 = !{!"_ZTSN8eprosima7fastdds13tmutex_recordE", !11, i64 0, !12, i64 8, !6, i64 16}
!11 = !{!"_ZTSN8eprosima7fastdds8LockTypeE", !7, i64 0}
!12 = !{!"any pointer", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


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