; LLVM IR from eclipse-threadx/threadx :: utility/benchmarks/thread_metric (tm_interrupt_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_interrupt_thread_0_counter = external dso_local global i64, align 8

; Function Attrs: nounwind uwtable
define dso_local void @tm_interrupt_thread_0_entry() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #3
  %3 = call i32 @tm_semaphore_get(i32 noundef 0)
  store i32 %3, ptr %1, align 4, !tbaa !5
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = icmp ne i32 %4, 0
  br i1 %5, label %6, label %7

6:                                                ; preds = %0
  store i32 1, ptr %2, align 4
  br label %17

7:                                                ; preds = %0
  br label %8

8:                                                ; preds = %14, %7
  br label %9

9:                                                ; preds = %8
  call void asm sideeffect "SVC #0", "~{dirflag},~{fpsr},~{flags}"() #3, !srcloc !9
  %10 = call i32 @tm_semaphore_get(i32 noundef 0)
  store i32 %10, ptr %1, align 4, !tbaa !5
  %11 = load i32, ptr %1, align 4, !tbaa !5
  %12 = icmp ne i32 %11, 0
  br i1 %12, label %13, label %14

13:                                               ; preds = %9
  store i32 1, ptr %2, align 4
  br label %17

14:                                               ; preds = %9
  %15 = load i64, ptr @tm_interrupt_thread_0_counter, align 8, !tbaa !10
  %16 = add i64 %15, 1
  store i64 %16, ptr @tm_interrupt_thread_0_counter, align 8, !tbaa !10
  br label %8

17:                                               ; preds = %13, %6
  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

; 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 = !{i64 2147668248}
!10 = !{!11, !11, i64 0}
!11 = !{!"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_interrupt_thread_0_counter = external dso_local local_unnamed_addr global i64, align 8

; Function Attrs: nounwind uwtable
define dso_local void @tm_interrupt_thread_0_entry() local_unnamed_addr #0 {
  %1 = tail call i32 @tm_semaphore_get(i32 noundef 0) #2
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %.preheader, label %.loopexit

.preheader:                                       ; preds = %0
  tail call void asm sideeffect "SVC #0", "~{dirflag},~{fpsr},~{flags}"() #2, !srcloc !5
  %2 = tail call i32 @tm_semaphore_get(i32 noundef 0) #2
  %.not23 = icmp eq i32 %2, 0
  br i1 %.not23, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %3 = load i64, ptr @tm_interrupt_thread_0_counter, align 8, !tbaa !6
  %4 = add i64 %3, 1
  store i64 %4, ptr @tm_interrupt_thread_0_counter, align 8, !tbaa !6
  tail call void asm sideeffect "SVC #0", "~{dirflag},~{fpsr},~{flags}"() #2, !srcloc !5
  %5 = tail call i32 @tm_semaphore_get(i32 noundef 0) #2
  %.not2 = icmp eq i32 %5, 0
  br i1 %.not2, label %.lr.ph, label %.loopexit

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

declare i32 @tm_semaphore_get(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 = !{i64 2147668248}
!6 = !{!7, !7, i64 0}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}


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