; LLVM IR from eclipse-threadx/threadx :: utility/benchmarks/thread_metric (tm_synchronization_processing_test)

; 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"

@tm_synchronization_processing_counter = external dso_local global i64, align 8

; Function Attrs: nounwind uwtable
define dso_local void @tm_synchronization_processing_thread_0_entry() #0 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #3
  br label %2

2:                                                ; preds = %9, %0
  br label %3

3:                                                ; preds = %2
  %4 = call i32 @tm_semaphore_get(i32 noundef 0)
  %5 = call i32 @tm_semaphore_put(i32 noundef 0)
  store i32 %5, ptr %1, align 4, !tbaa !5
  %6 = load i32, ptr %1, align 4, !tbaa !5
  %7 = icmp ne i32 %6, 0
  br i1 %7, label %8, label %9

8:                                                ; preds = %3
  br label %12

9:                                                ; preds = %3
  %10 = load i64, ptr @tm_synchronization_processing_counter, align 8, !tbaa !9
  %11 = add i64 %10, 1
  store i64 %11, ptr @tm_synchronization_processing_counter, align 8, !tbaa !9
  br label %2

12:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #3
  ret void
}

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

declare i32 @tm_semaphore_get(i32 noundef) #2

declare i32 @tm_semaphore_put(i32 noundef) #2

; 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 = { "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !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"

@tm_synchronization_processing_counter = external dso_local local_unnamed_addr global i64, align 8

; Function Attrs: nounwind uwtable
define dso_local void @tm_synchronization_processing_thread_0_entry() local_unnamed_addr #0 {
  %1 = tail call i32 @tm_semaphore_get(i32 noundef 0) #2
  %2 = tail call i32 @tm_semaphore_put(i32 noundef 0) #2
  %.not1 = icmp eq i32 %2, 0
  br i1 %.not1, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %3 = load i64, ptr @tm_synchronization_processing_counter, align 8, !tbaa !5
  %4 = add i64 %3, 1
  store i64 %4, ptr @tm_synchronization_processing_counter, align 8, !tbaa !5
  %5 = tail call i32 @tm_semaphore_get(i32 noundef 0) #2
  %6 = tail call i32 @tm_semaphore_put(i32 noundef 0) #2
  %.not = icmp eq i32 %6, 0
  br i1 %.not, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %0
  ret void
}

declare i32 @tm_semaphore_get(i32 noundef) local_unnamed_addr #1

declare i32 @tm_semaphore_put(i32 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 = { "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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


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