; LLVM IR from thalium/icebox :: third_party/virtualbox/src/VBox/Devices/EFI/Firmware/MdePkg/Library (DevPathFromTextUsbTestAndMeasurement)

; 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_CLASS_TEXT = type { i8, i8, i8, 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
declare dso_local ptr @ConvertFromTextUsbClass(ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @DevPathFromTextUsbTestAndMeasurement(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca %struct.USB_CLASS_TEXT, align 1
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  %4 = getelementptr inbounds %struct.USB_CLASS_TEXT, ptr %3, i32 0, i32 0
  store i8 0, ptr %4, align 1, !tbaa !9
  %5 = getelementptr inbounds %struct.USB_CLASS_TEXT, ptr %3, i32 0, i32 1
  store i8 -2, ptr %5, align 1, !tbaa !11
  %6 = getelementptr inbounds %struct.USB_CLASS_TEXT, ptr %3, i32 0, i32 2
  store i8 0, ptr %6, align 1, !tbaa !12
  %7 = getelementptr inbounds %struct.USB_CLASS_TEXT, ptr %3, i32 0, i32 3
  store i8 3, ptr %7, align 1, !tbaa !13
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = call ptr @ConvertFromTextUsbClass(ptr noundef %8, ptr noundef %3)
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret ptr %9
}

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 = { 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, !7, i64 0}
!10 = !{!"", !7, i64 0, !7, i64 1, !7, i64 2, !7, i64 3}
!11 = !{!10, !7, i64 1}
!12 = !{!10, !7, i64 2}
!13 = !{!10, !7, i64 3}


; 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.USB_CLASS_TEXT = type { i8, i8, i8, i8 }

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

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

; Function Attrs: nounwind uwtable
declare dso_local ptr @ConvertFromTextUsbClass(ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local ptr @DevPathFromTextUsbTestAndMeasurement(ptr noundef %0) local_unnamed_addr #1 {
  %2 = alloca %struct.USB_CLASS_TEXT, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #2
  store <4 x i8> <i8 0, i8 -2, i8 0, i8 3>, ptr %2, align 4, !tbaa !5
  %3 = call ptr @ConvertFromTextUsbClass(ptr noundef %0, ptr noundef nonnull %2)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #2
  ret ptr %3
}

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 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,SLPVectorizerPass,SROAPass