Instead of storing an ASTContext* in FunctionProtoTypes with computed noexcept specifiers, unique FunctionProtoTypes with a ContextualFoldingSet, as suggested by John McCall.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127568 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp
index f655105..04c21bc 100644
--- a/lib/Sema/SemaDeclCXX.cpp
+++ b/lib/Sema/SemaDeclCXX.cpp
@@ -3091,7 +3091,7 @@
 
       // Check out noexcept specs.
       if (EST == EST_ComputedNoexcept) {
-        FunctionProtoType::NoexceptResult NR = Proto->getNoexceptSpec();
+        FunctionProtoType::NoexceptResult NR = Proto->getNoexceptSpec(Context);
         assert(NR != FunctionProtoType::NR_NoNoexcept &&
                "Must have noexcept result for EST_ComputedNoexcept.");
         assert(NR != FunctionProtoType::NR_Dependent &&
diff --git a/lib/Sema/SemaExceptionSpec.cpp b/lib/Sema/SemaExceptionSpec.cpp
index 01ee712..285f400 100644
--- a/lib/Sema/SemaExceptionSpec.cpp
+++ b/lib/Sema/SemaExceptionSpec.cpp
@@ -313,8 +313,8 @@
   if (OldEST == EST_None && NewEST == EST_None)
     return false;
 
-  FunctionProtoType::NoexceptResult OldNR = Old->getNoexceptSpec();
-  FunctionProtoType::NoexceptResult NewNR = New->getNoexceptSpec();
+  FunctionProtoType::NoexceptResult OldNR = Old->getNoexceptSpec(Context);
+  FunctionProtoType::NoexceptResult NewNR = New->getNoexceptSpec(Context);
   if (OldNR == FunctionProtoType::NR_BadNoexcept ||
       NewNR == FunctionProtoType::NR_BadNoexcept)
     return false;
@@ -460,7 +460,7 @@
   // omissions we make here.
   // We also shortcut checking if a noexcept expression was bad.
 
-  FunctionProtoType::NoexceptResult SuperNR =Superset->getNoexceptSpec();
+  FunctionProtoType::NoexceptResult SuperNR =Superset->getNoexceptSpec(Context);
   if (SuperNR == FunctionProtoType::NR_BadNoexcept ||
       SuperNR == FunctionProtoType::NR_Dependent)
     return false;
@@ -479,7 +479,7 @@
     return true;
   }
 
-  FunctionProtoType::NoexceptResult SubNR = Subset->getNoexceptSpec();
+  FunctionProtoType::NoexceptResult SubNR = Subset->getNoexceptSpec(Context);
   if (SubNR == FunctionProtoType::NR_BadNoexcept ||
       SubNR == FunctionProtoType::NR_Dependent)
     return false;
diff --git a/lib/Sema/SemaExprCXX.cpp b/lib/Sema/SemaExprCXX.cpp
index a1cd43a..ea93449 100644
--- a/lib/Sema/SemaExprCXX.cpp
+++ b/lib/Sema/SemaExprCXX.cpp
@@ -2423,7 +2423,7 @@
             FoundAssign = true;
             const FunctionProtoType *CPT
                 = Operator->getType()->getAs<FunctionProtoType>();
-            if (!CPT->isNothrow()) {
+            if (!CPT->isNothrow(Self.Context)) {
               AllNoThrow = false;
               break;
             }
@@ -2465,7 +2465,7 @@
               = Constructor->getType()->getAs<FunctionProtoType>();
           // FIXME: check whether evaluating default arguments can throw.
           // For now, we'll be conservative and assume that they can throw.
-          if (!CPT->isNothrow() || CPT->getNumArgs() > 1) {
+          if (!CPT->isNothrow(Self.Context) || CPT->getNumArgs() > 1) {
             AllNoThrow = false;
             break;
           }
@@ -2500,7 +2500,7 @@
               = Constructor->getType()->getAs<FunctionProtoType>();
           // TODO: check whether evaluating default arguments can throw.
           // For now, we'll be conservative and assume that they can throw.
-          return CPT->isNothrow() && CPT->getNumArgs() == 0;
+          return CPT->isNothrow(Self.Context) && CPT->getNumArgs() == 0;
         }
       }
     }