; LLVM IR from libxsmm/libxsmm :: src (libxsmm_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"

@libxsmm_thread_count = external global i32, align 4
@internal_get_tid.error_once = external hidden global i32, align 4
@libxsmm_verbosity = external global i32, align 4
@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [56 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @internal_get_tid() #0 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #3
  %2 = atomicrmw add ptr @libxsmm_thread_count, i32 1 seq_cst, align 4
  %3 = add i32 %2, 1
  store i32 %3, ptr %1, align 4, !tbaa !5
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = icmp ult i32 1024, %4
  br i1 %5, label %6, label %16

6:                                                ; preds = %0
  %7 = load i32, ptr @libxsmm_verbosity, align 4, !tbaa !5
  %8 = icmp ne i32 0, %7
  br i1 %8, label %9, label %16

9:                                                ; preds = %6
  %10 = atomicrmw add ptr @internal_get_tid.error_once, i32 1 seq_cst, align 4
  %11 = add i32 %10, 1
  %12 = icmp eq i32 1, %11
  br i1 %12, label %13, label %16

13:                                               ; preds = %9
  %14 = load ptr, ptr @stderr, align 8, !tbaa !9
  %15 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %14, ptr noundef @.str) #3
  br label %16

16:                                               ; preds = %13, %9, %6, %0
  %17 = load i32, ptr %1, align 4, !tbaa !5
  %18 = sub i32 %17, 1
  %19 = and i32 %18, 1023
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #3
  ret i32 %19
}

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

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr 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 = { 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 }

!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 = !{!"any pointer", !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"

@libxsmm_thread_count = external global i32, align 4
@internal_get_tid.error_once = external hidden global i32, align 4
@libxsmm_verbosity = external local_unnamed_addr global i32, align 4
@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [56 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local range(i32 0, 1024) i32 @internal_get_tid() local_unnamed_addr #0 {
  %1 = atomicrmw add ptr @libxsmm_thread_count, i32 1 seq_cst, align 4
  %2 = add i32 %1, -1024
  %3 = icmp ult i32 %2, -1025
  %4 = load i32, ptr @libxsmm_verbosity, align 4
  %5 = icmp ne i32 %4, 0
  %or.cond = select i1 %3, i1 %5, i1 false
  br i1 %or.cond, label %6, label %12

6:                                                ; preds = %0
  %7 = atomicrmw add ptr @internal_get_tid.error_once, i32 1 seq_cst, align 4
  %8 = icmp eq i32 %7, 0
  br i1 %8, label %9, label %12

9:                                                ; preds = %6
  %10 = load ptr, ptr @stderr, align 8, !tbaa !5
  %11 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef nonnull @.str) #2
  br label %12

12:                                               ; preds = %9, %6, %0
  %13 = and i32 %1, 1023
  ret i32 %13
}

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #1

attributes #0 = { nofree 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 = { 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 #2 = { cold 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"}


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