; LLVM IR from eclipse-threadx/threadx :: ports/risc-v64/gnu/example_build/qemu_virt (demo_threadx)

; 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.TX_SEMAPHORE_STRUCT = type { i64, ptr, i64, ptr, i32, ptr, ptr, ptr }

@semaphore_0 = external dso_local global %struct.TX_SEMAPHORE_STRUCT, align 8
@.str.17 = external hidden unnamed_addr constant [41 x i8], align 1
@thread_3_counter = external dso_local global i64, align 8
@thread_4_counter = external dso_local global i64, align 8

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local void @thread_3_and_4_entry(i64 noundef %0) #1 {
  %2 = alloca i64, align 8
  %3 = alloca i32, align 4
  store i64 %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  br label %4

4:                                                ; preds = %26, %1
  br label %5

5:                                                ; preds = %4
  %6 = call i32 @uart_puts(ptr noundef @.str.17)
  %7 = load i64, ptr %2, align 8, !tbaa !5
  %8 = icmp eq i64 %7, 3
  br i1 %8, label %9, label %12

9:                                                ; preds = %5
  %10 = load i64, ptr @thread_3_counter, align 8, !tbaa !5
  %11 = add i64 %10, 1
  store i64 %11, ptr @thread_3_counter, align 8, !tbaa !5
  br label %15

12:                                               ; preds = %5
  %13 = load i64, ptr @thread_4_counter, align 8, !tbaa !5
  %14 = add i64 %13, 1
  store i64 %14, ptr @thread_4_counter, align 8, !tbaa !5
  br label %15

15:                                               ; preds = %12, %9
  %16 = call i32 @_txe_semaphore_get(ptr noundef @semaphore_0, i64 noundef 4294967295)
  store i32 %16, ptr %3, align 4, !tbaa !9
  %17 = load i32, ptr %3, align 4, !tbaa !9
  %18 = icmp ne i32 %17, 0
  br i1 %18, label %19, label %20

19:                                               ; preds = %15
  br label %27

20:                                               ; preds = %15
  %21 = call i32 @_tx_thread_sleep(i64 noundef 2)
  %22 = call i32 @_txe_semaphore_put(ptr noundef @semaphore_0)
  store i32 %22, ptr %3, align 4, !tbaa !9
  %23 = load i32, ptr %3, align 4, !tbaa !9
  %24 = icmp ne i32 %23, 0
  br i1 %24, label %25, label %26

25:                                               ; preds = %20
  br label %27

26:                                               ; preds = %20
  br label %4

27:                                               ; preds = %25, %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare i32 @uart_puts(ptr noundef) #2

declare i32 @_tx_thread_sleep(i64 noundef) #2

declare i32 @_txe_semaphore_get(ptr noundef, i64 noundef) #2

declare i32 @_txe_semaphore_put(ptr noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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"

%struct.TX_SEMAPHORE_STRUCT = type { i64, ptr, i64, ptr, i32, ptr, ptr, ptr }

@semaphore_0 = external dso_local global %struct.TX_SEMAPHORE_STRUCT, align 8
@.str.17 = external hidden unnamed_addr constant [41 x i8], align 1
@thread_3_counter = external dso_local local_unnamed_addr global i64, align 8
@thread_4_counter = external dso_local local_unnamed_addr global i64, align 8

; Function Attrs: nounwind uwtable
define dso_local void @thread_3_and_4_entry(i64 noundef %0) local_unnamed_addr #0 {
  %2 = icmp eq i64 %0, 3
  br i1 %2, label %.split.us, label %.split

.split.us:                                        ; preds = %1, %7
  %3 = tail call i32 @uart_puts(ptr noundef nonnull @.str.17) #2
  %4 = load i64, ptr @thread_3_counter, align 8, !tbaa !5
  %5 = add i64 %4, 1
  store i64 %5, ptr @thread_3_counter, align 8, !tbaa !5
  %6 = tail call i32 @_txe_semaphore_get(ptr noundef nonnull @semaphore_0, i64 noundef 4294967295) #2
  %.not.us = icmp eq i32 %6, 0
  br i1 %.not.us, label %7, label %.split5.us

7:                                                ; preds = %.split.us
  %8 = tail call i32 @_tx_thread_sleep(i64 noundef 2) #2
  %9 = tail call i32 @_txe_semaphore_put(ptr noundef nonnull @semaphore_0) #2
  %.not3.us = icmp eq i32 %9, 0
  br i1 %.not3.us, label %.split.us, label %.split5.us

.split:                                           ; preds = %1, %14
  %10 = tail call i32 @uart_puts(ptr noundef nonnull @.str.17) #2
  %11 = load i64, ptr @thread_4_counter, align 8, !tbaa !5
  %12 = add i64 %11, 1
  store i64 %12, ptr @thread_4_counter, align 8, !tbaa !5
  %13 = tail call i32 @_txe_semaphore_get(ptr noundef nonnull @semaphore_0, i64 noundef 4294967295) #2
  %.not = icmp eq i32 %13, 0
  br i1 %.not, label %14, label %.split5.us

14:                                               ; preds = %.split
  %15 = tail call i32 @_tx_thread_sleep(i64 noundef 2) #2
  %16 = tail call i32 @_txe_semaphore_put(ptr noundef nonnull @semaphore_0) #2
  %.not3 = icmp eq i32 %16, 0
  br i1 %.not3, label %.split, label %.split5.us

.split5.us:                                       ; preds = %.split, %14, %.split.us, %7
  ret void
}

declare i32 @uart_puts(ptr noundef) local_unnamed_addr #1

declare i32 @_tx_thread_sleep(i64 noundef) local_unnamed_addr #1

declare i32 @_txe_semaphore_get(ptr noundef, i64 noundef) local_unnamed_addr #1

declare i32 @_txe_semaphore_put(ptr 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,LICMPass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass