; LLVM IR from thalium/icebox :: third_party/virtualbox/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Universal (IScsiExtScsiPassThruGetNextTarget)

; 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"

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

declare i64 @CompareMem(ptr noundef, ptr noundef, i64 noundef) #1

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

declare ptr @SetMem(ptr noundef, i64 noundef, i8 noundef zeroext) #1

; Function Attrs: nounwind uwtable
define dso_local i64 @IScsiExtScsiPassThruGetNextTarget(ptr noundef %0, ptr noundef %1) #2 {
  %3 = alloca i64, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca [16 x i8], align 16
  %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 16, ptr %6) #3
  %8 = getelementptr inbounds [16 x i8], ptr %6, i64 0, i64 0
  %9 = call ptr @SetMem(ptr noundef %8, i64 noundef 16, i8 noundef zeroext -1)
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = load ptr, ptr %10, align 8, !tbaa !5
  %12 = getelementptr inbounds [16 x i8], ptr %6, i64 0, i64 0
  %13 = call i64 @CompareMem(ptr noundef %11, ptr noundef %12, i64 noundef 16)
  %14 = icmp eq i64 %13, 0
  br i1 %14, label %15, label %19

15:                                               ; preds = %2
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = load ptr, ptr %16, align 8, !tbaa !5
  %18 = getelementptr inbounds i8, ptr %17, i64 0
  store i8 0, ptr %18, align 1, !tbaa !9
  store i64 0, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %28

19:                                               ; preds = %2
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = load ptr, ptr %20, align 8, !tbaa !5
  %22 = getelementptr inbounds i8, ptr %21, i64 0
  %23 = load i8, ptr %22, align 1, !tbaa !9
  %24 = zext i8 %23 to i32
  %25 = icmp eq i32 %24, 0
  br i1 %25, label %26, label %27

26:                                               ; preds = %19
  store i64 -9223372036854775794, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %28

27:                                               ; preds = %19
  store i64 -9223372036854775806, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %28

28:                                               ; preds = %27, %26, %15
  call void @llvm.lifetime.end.p0(i64 16, ptr %6) #3
  %29 = load i64, ptr %3, align 8
  ret i64 %29
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 = !{!7, !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"

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

declare i64 @CompareMem(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #1

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

declare ptr @SetMem(ptr noundef, i64 noundef, i8 noundef zeroext) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i64 -9223372036854775806, 1) i64 @IScsiExtScsiPassThruGetNextTarget(ptr nocapture noundef readnone %0, ptr nocapture noundef readonly %1) local_unnamed_addr #2 {
  %3 = alloca [16 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %3) #3
  %4 = call ptr @SetMem(ptr noundef nonnull %3, i64 noundef 16, i8 noundef zeroext -1) #3
  %5 = load ptr, ptr %1, align 8, !tbaa !5
  %6 = call i64 @CompareMem(ptr noundef %5, ptr noundef nonnull %3, i64 noundef 16) #3
  %7 = icmp eq i64 %6, 0
  %8 = load ptr, ptr %1, align 8, !tbaa !5
  br i1 %7, label %9, label %10

9:                                                ; preds = %2
  store i8 0, ptr %8, align 1, !tbaa !9
  br label %13

10:                                               ; preds = %2
  %11 = load i8, ptr %8, align 1, !tbaa !9
  %12 = icmp eq i8 %11, 0
  %. = select i1 %12, i64 -9223372036854775794, i64 -9223372036854775806
  br label %13

13:                                               ; preds = %10, %9
  %.0 = phi i64 [ 0, %9 ], [ %., %10 ]
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %3) #3
  ret i64 %.0
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 = !{!7, !7, i64 0}


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