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

; 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._LIST_ENTRY = type { ptr, ptr }
%struct._ISCSI_KEY_VALUE_PAIR = type { %struct._LIST_ENTRY, ptr, ptr }

declare ptr @RemoveEntryList(ptr noundef) #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

declare void @FreePool(ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local ptr @IScsiGetValueByKeyFromList(ptr noundef %0, ptr noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store ptr null, ptr %7, align 8, !tbaa !5
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct._LIST_ENTRY, ptr %8, i32 0, i32 0
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  store ptr %10, ptr %5, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %35, %2
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = icmp ne ptr %12, %13
  br i1 %14, label %15, label %39

15:                                               ; preds = %11
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = ptrtoint ptr %16 to i64
  %18 = sub i64 %17, 0
  %19 = inttoptr i64 %18 to ptr
  store ptr %19, ptr %6, align 8, !tbaa !5
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct._ISCSI_KEY_VALUE_PAIR, ptr %20, i32 0, i32 1
  %22 = load ptr, ptr %21, align 8, !tbaa !11
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = call i64 @AsciiStrCmp(ptr noundef %22, ptr noundef %23)
  %25 = icmp eq i64 %24, 0
  br i1 %25, label %26, label %34

26:                                               ; preds = %15
  %27 = load ptr, ptr %6, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct._ISCSI_KEY_VALUE_PAIR, ptr %27, i32 0, i32 2
  %29 = load ptr, ptr %28, align 8, !tbaa !13
  store ptr %29, ptr %7, align 8, !tbaa !5
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct._ISCSI_KEY_VALUE_PAIR, ptr %30, i32 0, i32 0
  %32 = call ptr @RemoveEntryList(ptr noundef %31)
  %33 = load ptr, ptr %6, align 8, !tbaa !5
  call void @FreePool(ptr noundef %33)
  br label %39

34:                                               ; preds = %15
  br label %35

35:                                               ; preds = %34
  %36 = load ptr, ptr %5, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct._LIST_ENTRY, ptr %36, i32 0, i32 0
  %38 = load ptr, ptr %37, align 8, !tbaa !9
  store ptr %38, ptr %5, align 8, !tbaa !5
  br label %11, !llvm.loop !14

39:                                               ; preds = %26, %11
  %40 = load ptr, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret ptr %40
}

declare i64 @AsciiStrCmp(ptr noundef, ptr noundef) #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 = { 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, !6, i64 0}
!10 = !{!"_LIST_ENTRY", !6, i64 0, !6, i64 8}
!11 = !{!12, !6, i64 16}
!12 = !{!"_ISCSI_KEY_VALUE_PAIR", !10, i64 0, !6, i64 16, !6, i64 24}
!13 = !{!12, !6, i64 24}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; 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 ptr @RemoveEntryList(ptr noundef) local_unnamed_addr #0

declare void @FreePool(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local ptr @IScsiGetValueByKeyFromList(ptr noundef readonly %0, ptr noundef %1) local_unnamed_addr #1 {
  br label %3

3:                                                ; preds = %4, %2
  %.011.in = phi ptr [ %0, %2 ], [ %.011, %4 ]
  %.011 = load ptr, ptr %.011.in, align 8, !tbaa !5
  %.not = icmp eq ptr %.011, %0
  br i1 %.not, label %.loopexit, label %4

4:                                                ; preds = %3
  %5 = getelementptr inbounds i8, ptr %.011, i64 16
  %6 = load ptr, ptr %5, align 8, !tbaa !10
  %7 = tail call i64 @AsciiStrCmp(ptr noundef %6, ptr noundef %1) #2
  %8 = icmp eq i64 %7, 0
  br i1 %8, label %9, label %3, !llvm.loop !12

9:                                                ; preds = %4
  %10 = getelementptr inbounds i8, ptr %.011, i64 24
  %11 = load ptr, ptr %10, align 8, !tbaa !14
  %12 = tail call ptr @RemoveEntryList(ptr noundef nonnull %.011) #2
  tail call void @FreePool(ptr noundef nonnull %.011) #2
  br label %.loopexit

.loopexit:                                        ; preds = %3, %9
  %.0 = phi ptr [ %11, %9 ], [ null, %3 ]
  ret ptr %.0
}

declare i64 @AsciiStrCmp(ptr noundef, ptr noundef) local_unnamed_addr #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 = !{!"_LIST_ENTRY", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !7, i64 16}
!11 = !{!"_ISCSI_KEY_VALUE_PAIR", !6, i64 0, !7, i64 16, !7, i64 24}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = !{!11, !7, i64 24}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass