Revert r158700 and dependent patches r158716, r158717, and r158731.

The original r158700 caused crashes in the gcc test suite,
g++.abi/vtable3a.C among others. It also caused failures in the libc++
test suite.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158749 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplateInstantiateDecl.cpp b/lib/Sema/SemaTemplateInstantiateDecl.cpp
index d4b5ffe..662b302 100644
--- a/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -79,16 +79,14 @@
           ExprResult Result = SubstExpr(Aligned->getAlignmentExpr(),
                                         TemplateArgs);
           if (!Result.isInvalid())
-            AddAlignedAttr(Aligned->getLocation(), New, Result.takeAs<Expr>(), 
-                           Aligned->getIsMSDeclSpec());
+            AddAlignedAttr(Aligned->getLocation(), New, Result.takeAs<Expr>());
         } else {
           TypeSourceInfo *Result = SubstType(Aligned->getAlignmentType(),
                                              TemplateArgs,
                                              Aligned->getLocation(),
                                              DeclarationName());
           if (Result)
-            AddAlignedAttr(Aligned->getLocation(), New, Result, 
-                           Aligned->getIsMSDeclSpec());
+            AddAlignedAttr(Aligned->getLocation(), New, Result);
         }
         continue;
       }