; LLVM IR from lichen-community-systems/signaletic :: hosts/daisy/vendor/libDaisy/Middlewares/ST/STM32_USB_Host_Library/Core/Src (GetDescriptor)

; 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._USBH_HandleTypeDef = type { i32, i32, i32, %struct.USBH_CtrlTypeDef, %struct.USBH_DeviceTypeDef, [1 x ptr], ptr, i32, [16 x i32], i32, i32, i8, ptr, ptr }
%struct.USBH_CtrlTypeDef = type { i8, i8, i8, ptr, i16, i16, %union._USB_Setup, i32, i8 }
%union._USB_Setup = type { [2 x i32] }
%struct.USBH_DeviceTypeDef = type { [256 x i8], [512 x i8], i8, i8, i8, i8, i8, i8, i8, i8, i8, %struct._DeviceDescriptor, %struct._ConfigurationDescriptor }
%struct._DeviceDescriptor = type { i8, i8, i16, i8, i8, i8, i8, i16, i16, i16, i8, i8, i8, i8 }
%struct._ConfigurationDescriptor = type { i8, i8, i16, i8, i8, i8, i8, i8, [2 x %struct._InterfaceDescriptor] }
%struct._InterfaceDescriptor = type { i8, i8, i8, i8, i8, i8, i8, i8, i8, [2 x %struct._EndpointDescriptor] }
%struct._EndpointDescriptor = type { i8, i8, i8, i8, i16, i8 }
%struct._SetupPkt_Struc = type { i8, i8, %union.uint16_t_uint8_t, %union.uint16_t_uint8_t, %union.uint16_t_uint8_t }
%union.uint16_t_uint8_t = type { i16 }

; Function Attrs: nounwind uwtable
define dso_local i32 @USBH_GetDescriptor(ptr noundef %0, i8 noundef zeroext %1, i16 noundef zeroext %2, ptr noundef %3, i16 noundef zeroext %4) #0 {
  %6 = alloca ptr, align 8
  %7 = alloca i8, align 1
  %8 = alloca i16, align 2
  %9 = alloca ptr, align 8
  %10 = alloca i16, align 2
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i8 %1, ptr %7, align 1, !tbaa !9
  store i16 %2, ptr %8, align 2, !tbaa !10
  store ptr %3, ptr %9, align 8, !tbaa !5
  store i16 %4, ptr %10, align 2, !tbaa !10
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct._USBH_HandleTypeDef, ptr %11, i32 0, i32 2
  %13 = load i32, ptr %12, align 8, !tbaa !12
  %14 = icmp eq i32 %13, 1
  br i1 %14, label %15, label %53

15:                                               ; preds = %5
  %16 = load i8, ptr %7, align 1, !tbaa !9
  %17 = zext i8 %16 to i32
  %18 = or i32 128, %17
  %19 = trunc i32 %18 to i8
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct._USBH_HandleTypeDef, ptr %20, i32 0, i32 3
  %22 = getelementptr inbounds %struct.USBH_CtrlTypeDef, ptr %21, i32 0, i32 6
  %23 = getelementptr inbounds %struct._SetupPkt_Struc, ptr %22, i32 0, i32 0
  store i8 %19, ptr %23, align 4, !tbaa !9
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct._USBH_HandleTypeDef, ptr %24, i32 0, i32 3
  %26 = getelementptr inbounds %struct.USBH_CtrlTypeDef, ptr %25, i32 0, i32 6
  %27 = getelementptr inbounds %struct._SetupPkt_Struc, ptr %26, i32 0, i32 1
  store i8 6, ptr %27, align 1, !tbaa !9
  %28 = load i16, ptr %8, align 2, !tbaa !10
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct._USBH_HandleTypeDef, ptr %29, i32 0, i32 3
  %31 = getelementptr inbounds %struct.USBH_CtrlTypeDef, ptr %30, i32 0, i32 6
  %32 = getelementptr inbounds %struct._SetupPkt_Struc, ptr %31, i32 0, i32 2
  store i16 %28, ptr %32, align 2, !tbaa !9
  %33 = load i16, ptr %8, align 2, !tbaa !10
  %34 = zext i16 %33 to i32
  %35 = and i32 %34, 65280
  %36 = icmp eq i32 %35, 768
  br i1 %36, label %37, label %42

37:                                               ; preds = %15
  %38 = load ptr, ptr %6, align 8, !tbaa !5
  %39 = getelementptr inbounds %struct._USBH_HandleTypeDef, ptr %38, i32 0, i32 3
  %40 = getelementptr inbounds %struct.USBH_CtrlTypeDef, ptr %39, i32 0, i32 6
  %41 = getelementptr inbounds %struct._SetupPkt_Struc, ptr %40, i32 0, i32 3
  store i16 1033, ptr %41, align 4, !tbaa !9
  br label %47

42:                                               ; preds = %15
  %43 = load ptr, ptr %6, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct._USBH_HandleTypeDef, ptr %43, i32 0, i32 3
  %45 = getelementptr inbounds %struct.USBH_CtrlTypeDef, ptr %44, i32 0, i32 6
  %46 = getelementptr inbounds %struct._SetupPkt_Struc, ptr %45, i32 0, i32 3
  store i16 0, ptr %46, align 4, !tbaa !9
  br label %47

47:                                               ; preds = %42, %37
  %48 = load i16, ptr %10, align 2, !tbaa !10
  %49 = load ptr, ptr %6, align 8, !tbaa !5
  %50 = getelementptr inbounds %struct._USBH_HandleTypeDef, ptr %49, i32 0, i32 3
  %51 = getelementptr inbounds %struct.USBH_CtrlTypeDef, ptr %50, i32 0, i32 6
  %52 = getelementptr inbounds %struct._SetupPkt_Struc, ptr %51, i32 0, i32 4
  store i16 %48, ptr %52, align 2, !tbaa !9
  br label %53

53:                                               ; preds = %47, %5
  %54 = load ptr, ptr %6, align 8, !tbaa !5
  %55 = load ptr, ptr %9, align 8, !tbaa !5
  %56 = load i16, ptr %10, align 2, !tbaa !10
  %57 = call i32 @USBH_CtlReq(ptr noundef %54, ptr noundef %55, i16 noundef zeroext %56)
  ret i32 %57
}

; Function Attrs: nounwind uwtable
declare dso_local i32 @USBH_CtlReq(ptr noundef, ptr noundef, i16 noundef zeroext) #0

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" }

!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 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"short", !7, i64 0}
!12 = !{!13, !14, i64 8}
!13 = !{!"_USBH_HandleTypeDef", !14, i64 0, !14, i64 4, !14, i64 8, !15, i64 16, !16, i64 56, !7, i64 920, !6, i64 928, !14, i64 936, !7, i64 940, !14, i64 1004, !14, i64 1008, !7, i64 1012, !6, i64 1016, !6, i64 1024}
!14 = !{!"int", !7, i64 0}
!15 = !{!"", !7, i64 0, !7, i64 1, !7, i64 2, !6, i64 8, !11, i64 16, !11, i64 18, !7, i64 20, !14, i64 28, !7, i64 32}
!16 = !{!"", !7, i64 0, !7, i64 256, !7, i64 768, !7, i64 769, !7, i64 770, !7, i64 771, !7, i64 772, !7, i64 773, !7, i64 774, !7, i64 775, !7, i64 776, !17, i64 778, !18, i64 796}
!17 = !{!"_DeviceDescriptor", !7, i64 0, !7, i64 1, !11, i64 2, !7, i64 4, !7, i64 5, !7, i64 6, !7, i64 7, !11, i64 8, !11, i64 10, !11, i64 12, !7, i64 14, !7, i64 15, !7, i64 16, !7, i64 17}
!18 = !{!"_ConfigurationDescriptor", !7, i64 0, !7, i64 1, !11, i64 2, !7, i64 4, !7, i64 5, !7, i64 6, !7, i64 7, !7, i64 8, !7, i64 10}


; 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 i32 @USBH_GetDescriptor(ptr noundef %0, i8 noundef zeroext %1, i16 noundef zeroext %2, ptr noundef %3, i16 noundef zeroext %4) local_unnamed_addr #0 {
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  %7 = load i32, ptr %6, align 8, !tbaa !5
  %8 = icmp eq i32 %7, 1
  br i1 %8, label %9, label %18

9:                                                ; preds = %5
  %10 = or i8 %1, -128
  %11 = getelementptr inbounds i8, ptr %0, i64 36
  store i8 %10, ptr %11, align 4, !tbaa !16
  %12 = getelementptr inbounds i8, ptr %0, i64 37
  store i8 6, ptr %12, align 1, !tbaa !16
  %13 = getelementptr inbounds i8, ptr %0, i64 38
  store i16 %2, ptr %13, align 2, !tbaa !16
  %14 = and i16 %2, -256
  %15 = icmp eq i16 %14, 768
  %spec.select = select i1 %15, i16 1033, i16 0
  %16 = getelementptr inbounds i8, ptr %0, i64 40
  store i16 %spec.select, ptr %16, align 4
  %17 = getelementptr inbounds i8, ptr %0, i64 42
  store i16 %4, ptr %17, align 2, !tbaa !16
  br label %18

18:                                               ; preds = %9, %5
  %19 = tail call i32 @USBH_CtlReq(ptr noundef nonnull %0, ptr noundef %3, i16 noundef zeroext %4)
  ret i32 %19
}

; Function Attrs: nounwind uwtable
declare dso_local i32 @USBH_CtlReq(ptr noundef, ptr noundef, i16 noundef zeroext) local_unnamed_addr #0

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" }

!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, !7, i64 8}
!6 = !{!"_USBH_HandleTypeDef", !7, i64 0, !7, i64 4, !7, i64 8, !10, i64 16, !13, i64 56, !8, i64 920, !11, i64 928, !7, i64 936, !8, i64 940, !7, i64 1004, !7, i64 1008, !8, i64 1012, !11, i64 1016, !11, i64 1024}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"", !8, i64 0, !8, i64 1, !8, i64 2, !11, i64 8, !12, i64 16, !12, i64 18, !8, i64 20, !7, i64 28, !8, i64 32}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!"short", !8, i64 0}
!13 = !{!"", !8, i64 0, !8, i64 256, !8, i64 768, !8, i64 769, !8, i64 770, !8, i64 771, !8, i64 772, !8, i64 773, !8, i64 774, !8, i64 775, !8, i64 776, !14, i64 778, !15, i64 796}
!14 = !{!"_DeviceDescriptor", !8, i64 0, !8, i64 1, !12, i64 2, !8, i64 4, !8, i64 5, !8, i64 6, !8, i64 7, !12, i64 8, !12, i64 10, !12, i64 12, !8, i64 14, !8, i64 15, !8, i64 16, !8, i64 17}
!15 = !{!"_ConfigurationDescriptor", !8, i64 0, !8, i64 1, !12, i64 2, !8, i64 4, !8, i64 5, !8, i64 6, !8, i64 7, !8, i64 8, !8, i64 10}
!16 = !{!8, !8, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InstCombinePass,JumpThreadingPass,MergedLoadStoreMotionPass,SROAPass,SimplifyCFGPass,TailCallElimPass