CodeGen: Refactor RTTI emission

Let's not expose ABI specific minutia inside of CodeGenModule and Type.
Instead, let's abstract it through CXXABI.

This gets rid of:
CodeGenModule::getCompleteObjectLocator,
CodeGenModule::EmitFundamentalTypeDescriptor{s,},
CodeGenModule::getMSTypeDescriptor,
CodeGenModule::getMSCompleteObjectLocator,
CGCXXABI::shouldRTTIBeUnique,
CGCXXABI::classifyRTTIUniqueness.

CGRTTI was *almost* entirely centered around providing Itanium-style
RTTI information.  Instead of providing interfaces that only it
consumes, move it to the ItaniumCXXABI implementation file.  This allows
it to have access to Itanium-specific implementation details without
providing useless expansion points for the Microsoft ABI side.

Differential Revision: http://reviews.llvm.org/D4261

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212435 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 28 deletions

diff --git a/lib/CodeGen/CGCXXABI.cpp b/lib/CodeGen/CGCXXABI.cpp
index ee65d77d4b..55ddd666c4 100644
--- a/lib/CodeGen/CGCXXABI.cpp
+++ b/lib/CodeGen/CGCXXABI.cpp
@@ -325,31 +325,3 @@ LValue CGCXXABI::EmitThreadLocalVarDeclLValue(CodeGenFunction &CGF,
 bool CGCXXABI::NeedsVTTParameter(GlobalDecl GD) {
   return false;
 }
-
-/// What sort of uniqueness rules should we use for the RTTI for the
-/// given type?
-CGCXXABI::RTTIUniquenessKind
-CGCXXABI::classifyRTTIUniqueness(QualType CanTy,
-                                 llvm::GlobalValue::LinkageTypes Linkage) {
-  if (shouldRTTIBeUnique())
-    return RUK_Unique;
-
-  // It's only necessary for linkonce_odr or weak_odr linkage.
-  if (Linkage != llvm::GlobalValue::LinkOnceODRLinkage &&
-      Linkage != llvm::GlobalValue::WeakODRLinkage)
-    return RUK_Unique;
-
-  // It's only necessary with default visibility.
-  if (CanTy->getVisibility() != DefaultVisibility)
-    return RUK_Unique;
-
-  // If we're not required to publish this symbol, hide it.
-  if (Linkage == llvm::GlobalValue::LinkOnceODRLinkage)
-    return RUK_NonUniqueHidden;
-
-  // If we're required to publish this symbol, as we might be under an
-  // explicit instantiation, leave it with default visibility but
-  // enable string-comparisons.
-  assert(Linkage == llvm::GlobalValue::WeakODRLinkage);
-  return RUK_NonUniqueVisible;
-}