; LLVM IR from thalium/icebox :: third_party/virtualbox/src/VBox/Devices/EFI/Firmware/IntelFrameworkModulePkg (PxeUndiTransmit)

; 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.PXENV_UNDI_TRANSMIT_T = type { i16, i8, i8, i16, i16, i16, i16, [2 x i32] }

declare i64 @MakePxeCall(ptr noundef, ptr noundef, i64 noundef, i16 noundef zeroext) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local i64 @PxeUndiTransmit(ptr noundef %0, ptr noundef %1) #2 {
  %3 = alloca i64, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = call i64 @MakePxeCall(ptr noundef %8, ptr noundef %9, i64 noundef 20, i16 noundef zeroext 8)
  store i64 %10, ptr %6, align 8, !tbaa !9
  %11 = load i64, ptr %6, align 8, !tbaa !9
  %12 = icmp eq i64 %11, 0
  br i1 %12, label %13, label %14

13:                                               ; preds = %2
  store i64 0, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %21

14:                                               ; preds = %2
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.PXENV_UNDI_TRANSMIT_T, ptr %15, i32 0, i32 0
  %17 = load i16, ptr %16, align 1, !tbaa !11
  %18 = zext i16 %17 to i32
  switch i32 %18, label %20 [
    i32 6, label %19
  ]

19:                                               ; preds = %14
  store i64 -9223372036854775802, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %21

20:                                               ; preds = %14
  store i64 -9223372036854775801, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %21

21:                                               ; preds = %20, %19, %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %22 = load i64, ptr %3, align 8
  ret i64 %22
}

attributes #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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 = !{!"long long", !7, i64 0}
!11 = !{!12, !13, i64 0}
!12 = !{!"", !13, i64 0, !7, i64 2, !7, i64 3, !13, i64 4, !13, i64 6, !13, i64 8, !13, i64 10, !7, i64 12}
!13 = !{!"short", !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"

declare i64 @MakePxeCall(ptr noundef, ptr noundef, i64 noundef, i16 noundef zeroext) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i64 -9223372036854775802, 1) i64 @PxeUndiTransmit(ptr noundef %0, ptr noundef %1) local_unnamed_addr #1 {
  %3 = tail call i64 @MakePxeCall(ptr noundef %0, ptr noundef %1, i64 noundef 20, i16 noundef zeroext 8) #2
  %4 = icmp eq i64 %3, 0
  br i1 %4, label %7, label %5

5:                                                ; preds = %2
  %6 = load i16, ptr %1, align 1, !tbaa !5
  %cond = icmp eq i16 %6, 6
  %. = select i1 %cond, i64 -9223372036854775802, i64 -9223372036854775801
  br label %7

7:                                                ; preds = %5, %2
  %.0 = phi i64 [ 0, %2 ], [ %., %5 ]
  ret i64 %.0
}

attributes #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 = { 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, !7, i64 0}
!6 = !{!"", !7, i64 0, !8, i64 2, !8, i64 3, !7, i64 4, !7, i64 6, !7, i64 8, !7, i64 10, !8, i64 12}
!7 = !{!"short", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}


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