; 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_QUEUE_STRUCT = type { i64, ptr, i32, i32, i32, i32, ptr, ptr, ptr, ptr, ptr, i32, ptr, ptr, ptr }

@queue_0 = external dso_local global %struct.TX_QUEUE_STRUCT, align 8
@.str.16 = external hidden unnamed_addr constant [35 x i8], align 1
@thread_2_counter = external dso_local global i64, align 8
@thread_2_messages_received = 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_2_entry(i64 noundef %0) #1 {
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  store i64 %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  br label %5

5:                                                ; preds = %18, %1
  br label %6

6:                                                ; preds = %5
  %7 = call i32 @uart_puts(ptr noundef @.str.16)
  %8 = load i64, ptr @thread_2_counter, align 8, !tbaa !5
  %9 = add i64 %8, 1
  store i64 %9, ptr @thread_2_counter, align 8, !tbaa !5
  %10 = call i32 @_txe_queue_receive(ptr noundef @queue_0, ptr noundef %3, i64 noundef 4294967295)
  store i32 %10, ptr %4, align 4, !tbaa !9
  %11 = load i32, ptr %4, align 4, !tbaa !9
  %12 = icmp ne i32 %11, 0
  br i1 %12, label %17, label %13

13:                                               ; preds = %6
  %14 = load i64, ptr %3, align 8, !tbaa !5
  %15 = load i64, ptr @thread_2_messages_received, align 8, !tbaa !5
  %16 = icmp ne i64 %14, %15
  br i1 %16, label %17, label %18

17:                                               ; preds = %13, %6
  br label %21

18:                                               ; preds = %13
  %19 = load i64, ptr @thread_2_messages_received, align 8, !tbaa !5
  %20 = add i64 %19, 1
  store i64 %20, ptr @thread_2_messages_received, align 8, !tbaa !5
  br label %5

21:                                               ; preds = %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, 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 @_txe_queue_receive(ptr noundef, ptr noundef, i64 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_QUEUE_STRUCT = type { i64, ptr, i32, i32, i32, i32, ptr, ptr, ptr, ptr, ptr, i32, ptr, ptr, ptr }

@queue_0 = external dso_local global %struct.TX_QUEUE_STRUCT, align 8
@.str.16 = external hidden unnamed_addr constant [35 x i8], align 1
@thread_2_counter = external dso_local local_unnamed_addr global i64, align 8
@thread_2_messages_received = external dso_local local_unnamed_addr global i64, align 8

; Function Attrs: mustprogress 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_2_entry(i64 noundef %0) local_unnamed_addr #1 {
  %2 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %3 = tail call i32 @uart_puts(ptr noundef nonnull @.str.16) #3
  %4 = load i64, ptr @thread_2_counter, align 8, !tbaa !5
  %5 = add i64 %4, 1
  store i64 %5, ptr @thread_2_counter, align 8, !tbaa !5
  %6 = call i32 @_txe_queue_receive(ptr noundef nonnull @queue_0, ptr noundef nonnull %2, i64 noundef 4294967295) #3
  %.not2 = icmp eq i32 %6, 0
  br i1 %.not2, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %9
  %7 = load i64, ptr %2, align 8, !tbaa !5
  %8 = load i64, ptr @thread_2_messages_received, align 8, !tbaa !5
  %.not1 = icmp eq i64 %7, %8
  br i1 %.not1, label %9, label %._crit_edge

9:                                                ; preds = %.lr.ph
  %10 = add i64 %7, 1
  store i64 %10, ptr @thread_2_messages_received, align 8, !tbaa !5
  %11 = call i32 @uart_puts(ptr noundef nonnull @.str.16) #3
  %12 = load i64, ptr @thread_2_counter, align 8, !tbaa !5
  %13 = add i64 %12, 1
  store i64 %13, ptr @thread_2_counter, align 8, !tbaa !5
  %14 = call i32 @_txe_queue_receive(ptr noundef nonnull @queue_0, ptr noundef nonnull %2, i64 noundef 4294967295) #3
  %.not = icmp eq i32 %14, 0
  br i1 %.not, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %9, %1
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  ret void
}

; Function Attrs: mustprogress 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) local_unnamed_addr #2

declare i32 @_txe_queue_receive(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #2

attributes #0 = { mustprogress 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"}


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