; LLVM IR from ctlst-tech/catpilot :: bsp/mcu/periph/usb/stm32 (usb)

; 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.usb_t = type { [32 x i8], [32 x i8], %struct.file_operations, ptr, ptr, ptr, ptr, ptr, i32, i32, i32, i32, %struct.usb_private_t }
%struct.file_operations = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }
%struct.usb_private_t = type { i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i32, i8, i8, i8, i8, i32, i32, i8 }

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

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

; Function Attrs: nounwind uwtable
define dso_local i32 @usb_transmit(ptr noundef %0, ptr noundef %1, i16 noundef zeroext %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i16, align 2
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i16 %2, ptr %7, align 2, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !11
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.usb_t, ptr %10, i32 0, i32 12
  %12 = getelementptr inbounds %struct.usb_private_t, ptr %11, i32 0, i32 3
  %13 = load ptr, ptr %12, align 8, !tbaa !13
  %14 = call i64 @xQueueSemaphoreTake(ptr noundef %13, i32 noundef 0)
  %15 = icmp eq i64 %14, 0
  br i1 %15, label %16, label %17

16:                                               ; preds = %3
  store i32 16, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %42

17:                                               ; preds = %3
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.usb_t, ptr %18, i32 0, i32 12
  %20 = getelementptr inbounds %struct.usb_private_t, ptr %19, i32 0, i32 1
  %21 = load ptr, ptr %20, align 8, !tbaa !18
  %22 = call i64 @xQueueSemaphoreTake(ptr noundef %21, i32 noundef 0)
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = load i16, ptr %7, align 2, !tbaa !9
  %25 = call zeroext i8 @CDC_Transmit_FS(ptr noundef %23, i16 noundef zeroext %24)
  %26 = zext i8 %25 to i32
  store i32 %26, ptr %8, align 4, !tbaa !11
  %27 = load i32, ptr %8, align 4, !tbaa !11
  %28 = icmp ne i32 %27, 0
  br i1 %28, label %35, label %29

29:                                               ; preds = %17
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.usb_t, ptr %30, i32 0, i32 12
  %32 = getelementptr inbounds %struct.usb_private_t, ptr %31, i32 0, i32 1
  %33 = load ptr, ptr %32, align 8, !tbaa !18
  %34 = call i64 @xQueueSemaphoreTake(ptr noundef %33, i32 noundef -1)
  br label %35

35:                                               ; preds = %29, %17
  %36 = load ptr, ptr %5, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.usb_t, ptr %36, i32 0, i32 12
  %38 = getelementptr inbounds %struct.usb_private_t, ptr %37, i32 0, i32 3
  %39 = load ptr, ptr %38, align 8, !tbaa !13
  %40 = call i64 @xQueueGenericSend(ptr noundef %39, ptr noundef null, i32 noundef 0, i64 noundef 0)
  %41 = load i32, ptr %8, align 4, !tbaa !11
  store i32 %41, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %42

42:                                               ; preds = %35, %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  %43 = load i32, ptr %4, align 4
  ret i32 %43
}

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

declare zeroext i8 @CDC_Transmit_FS(ptr noundef, i16 noundef zeroext) #2

declare i64 @xQueueGenericSend(ptr noundef, ptr noundef, i32 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"short", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!14, !6, i64 232}
!14 = !{!"", !7, i64 0, !7, i64 32, !15, i64 64, !6, i64 152, !6, i64 160, !6, i64 168, !6, i64 176, !6, i64 184, !12, i64 192, !12, i64 196, !12, i64 200, !12, i64 204, !16, i64 208}
!15 = !{!"file_operations", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48, !6, i64 56, !6, i64 64, !6, i64 72, !6, i64 80}
!16 = !{!"", !12, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48, !6, i64 56, !6, i64 64, !12, i64 72, !17, i64 76, !17, i64 77, !17, i64 78, !17, i64 79, !12, i64 80, !12, i64 84, !17, i64 88}
!17 = !{!"_Bool", !7, i64 0}
!18 = !{!14, !6, i64 216}


; 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"

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 256) i32 @usb_transmit(ptr nocapture noundef readonly %0, ptr noundef %1, i16 noundef zeroext %2) local_unnamed_addr #0 {
  %4 = getelementptr inbounds i8, ptr %0, i64 232
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %6 = tail call i64 @xQueueSemaphoreTake(ptr noundef %5, i32 noundef 0) #2
  %7 = icmp eq i64 %6, 0
  br i1 %7, label %20, label %8

8:                                                ; preds = %3
  %9 = getelementptr inbounds i8, ptr %0, i64 216
  %10 = load ptr, ptr %9, align 8, !tbaa !14
  %11 = tail call i64 @xQueueSemaphoreTake(ptr noundef %10, i32 noundef 0) #2
  %12 = tail call zeroext i8 @CDC_Transmit_FS(ptr noundef %1, i16 noundef zeroext %2) #2
  %13 = zext i8 %12 to i32
  %.not = icmp eq i8 %12, 0
  br i1 %.not, label %14, label %17

14:                                               ; preds = %8
  %15 = load ptr, ptr %9, align 8, !tbaa !14
  %16 = tail call i64 @xQueueSemaphoreTake(ptr noundef %15, i32 noundef -1) #2
  br label %17

17:                                               ; preds = %14, %8
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = tail call i64 @xQueueGenericSend(ptr noundef %18, ptr noundef null, i32 noundef 0, i64 noundef 0) #2
  br label %20

20:                                               ; preds = %3, %17
  %.0 = phi i32 [ %13, %17 ], [ 16, %3 ]
  ret i32 %.0
}

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

declare zeroext i8 @CDC_Transmit_FS(ptr noundef, i16 noundef zeroext) local_unnamed_addr #1

declare i64 @xQueueGenericSend(ptr noundef, ptr noundef, i32 noundef, i64 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, !10, i64 232}
!6 = !{!"", !7, i64 0, !7, i64 32, !9, i64 64, !10, i64 152, !10, i64 160, !10, i64 168, !10, i64 176, !10, i64 184, !11, i64 192, !11, i64 196, !11, i64 200, !11, i64 204, !12, i64 208}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!"file_operations", !10, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !10, i64 48, !10, i64 56, !10, i64 64, !10, i64 72, !10, i64 80}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!"int", !7, i64 0}
!12 = !{!"", !11, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !10, i64 48, !10, i64 56, !10, i64 64, !11, i64 72, !13, i64 76, !13, i64 77, !13, i64 78, !13, i64 79, !11, i64 80, !11, i64 84, !13, i64 88}
!13 = !{!"_Bool", !7, i64 0}
!14 = !{!6, !10, i64 216}


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