Cuckoo metadata (#24498)

* Basic infra for cuckoo filter of attributes
- Implement cuckoo filter lookup logic
- Implement new ready to run section
 - Add dumper to R2RDump
 - Parse section on load into data structure
 - Implement function to query filter
- Add concept of enum of well known attributes
  - So that attribute name hashes themselves may be cached
* Wrap all even vaguely perf critical uses of attribute by name parsing with use of R2R data
* Update emmintrin.h in the PAL header to contain the needed SSE2 intrinsics for the feature
- Disable the presence table for non Corelib cases. Current performance data does not warrant the size increase in other generated binaries

1 files changed, 2 insertions, 11 deletions

diff --git a/src/vm/commtmemberinfomap.cpp b/src/vm/commtmemberinfomap.cpp
index e53cd2f525..f2a8e33a14 100644
--- a/src/vm/commtmemberinfomap.cpp
+++ b/src/vm/commtmemberinfomap.cpp
@@ -214,24 +214,15 @@ void ComMTMemberInfoMap::Init(size_t sizeOfPtr)
     CONTRACTL_END;
 
     HRESULT     hr = S_OK;
-    mdTypeDef   td;                     // Token for the class.
     BYTE const  *pData;                 // Pointer to a custom attribute blob.
     ULONG       cbData;                 // Size of a custom attribute blob.
 
-    // Get the TypeDef and some info about it.
-    td = m_pMT->GetCl();
-
     m_bHadDuplicateDispIds = FALSE;
 
     // See if there is a default property.
     m_DefaultProp[0] = 0; // init to 'none'.
-    hr = m_pMT->GetMDImport()->GetCustomAttributeByName(
-        td, INTEROP_DEFAULTMEMBER_TYPE, reinterpret_cast<const void**>(&pData), &cbData);
-    if (hr == S_FALSE)
-    {
-        hr = m_pMT->GetMDImport()->GetCustomAttributeByName(
-            td, "System.Reflection.DefaultMemberAttribute", reinterpret_cast<const void**>(&pData), &cbData);
-    }
+    hr = m_pMT->GetCustomAttribute(
+        WellKnownAttribute::DefaultMember, reinterpret_cast<const void**>(&pData), &cbData);
     
     if (hr == S_OK && cbData > 5 && pData[0] == 1 && pData[1] == 0)
     {