Revert "P0035R4: Semantic analysis and code generation for C++17 overaligned allocation."

This reverts commit r283722. Breaks:
  Clang.SemaCUDA.device-var-init.cu
  Clang.CodeGenCUDA.device-var-init.cu

http://lab.llvm.org:8080/green/job/clang-stage1-cmake-RA-expensive/884/

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@283750 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 28 deletions

diff --git a/lib/Sema/SemaCUDA.cpp b/lib/Sema/SemaCUDA.cpp
index 827eb02bcd..d6c0606674 100644
--- a/lib/Sema/SemaCUDA.cpp
+++ b/lib/Sema/SemaCUDA.cpp
@@ -158,34 +158,6 @@ Sema::IdentifyCUDAPreference(const FunctionDecl *Caller,
   llvm_unreachable("All cases should've been handled by now.");
 }
 
-void Sema::EraseUnwantedCUDAMatches(const FunctionDecl *Caller,
-                                    LookupResult &R) {
-  if (R.isSingleResult())
-    return;
-
-  // Gets the CUDA function preference for a call from Caller to Match.
-  auto GetCFP = [&](const NamedDecl *D) {
-    if (auto *Callee = dyn_cast<FunctionDecl>(D->getUnderlyingDecl()))
-      return IdentifyCUDAPreference(Caller, Callee);
-    return CFP_Never;
-  };
-
-  // Find the best call preference among the functions in R.
-  CUDAFunctionPreference BestCFP = GetCFP(*std::max_element(
-      R.begin(), R.end(), [&](const NamedDecl *D1, const NamedDecl *D2) {
-        return GetCFP(D1) < GetCFP(D2);
-      }));
-
-  // Erase all functions with lower priority.
-  auto Filter = R.makeFilter();
-  while (Filter.hasNext()) {
-    auto *Callee = dyn_cast<FunctionDecl>(Filter.next()->getUnderlyingDecl());
-    if (Callee && GetCFP(Callee) < BestCFP)
-      Filter.erase();
-  }
-  Filter.done();
-}
-
 template <typename T>
 static void EraseUnwantedCUDAMatchesImpl(
     Sema &S, const FunctionDecl *Caller, llvm::SmallVectorImpl<T> &Matches,